Influence of chitin nanocrystals on the dielectric behaviour and conductivity of chitosan-based bionanocomposites
Publication date: Available online 21 August 2018Source: Composites Science and TechnologyAuthor(s): A.M. Salaberría, R. Teruel-Juanes, J.D. Badia, S.C.M. Fernandes, V. Sáenz de Juano-Arbona, J. Labidi, A. Ribes-GreusAbstractA series of bionanocomposite films based on chitosan, reinforced with chitin nanocrystals, were developed, and assessed in terms of dielectric behavior and conductivity by using an experimental methodology that allows avoiding the conductivity contribution and the exclusion of contact and interfacial polarization effects. The dielectric relaxations at low and high frequency and temperatur...
Source: Composites Science and Technology - August 21, 2018 Category: Science Source Type: research

Highly sensitive and stretchable graphene-silicone rubber composites for strain sensing
Publication date: Available online 21 August 2018Source: Composites Science and TechnologyAuthor(s): Heng Yang, XueFeng Yao, Zhong Zheng, LingHui Gong, Li Yuan, YaNan Yuan, YingHua LiuAbstractFlexible strain sensors made by conductive elastomer composites have attracted increasing attention. In this paper, the electromechanical properties of graphene-silicone rubber nanocomposites are studied systematically. First, the conductive nanocomposites composed of graphene and silicone rubber are prepared by means of co-coagulation, which shows a lower percolation threshold with 1.87 wt% (0.94 vol%). Second, the rubber nanocom...
Source: Composites Science and Technology - August 21, 2018 Category: Science Source Type: research

Mechanical reinforcement in poly(propylene carbonate) nanocomposites using double percolation networks by dual volume exclusions
Publication date: Available online 21 August 2018Source: Composites Science and TechnologyAuthor(s): Shanshan Lin, Benke Li, Tingting Chen, Wei Yu, Xianhong WangAbstractPoly(propylene carbonate) (PPC) nanocomposites with poly(lactic acid) (PLA) and sepiolite nanofibers (NF) double percolation networks were prepared according to the dual volume exclusions principle. A two-step melt mixing with annealing process was adopted to construct the double percolation networks, which were verified by rheological and morphological characterization. The formation of double percolation networks structure effectively increased both the m...
Source: Composites Science and Technology - August 21, 2018 Category: Science Source Type: research

Self-healing improves the stability and safety of polymer bonded explosives
Publication date: Available online 20 August 2018Source: Composites Science and TechnologyAuthor(s): Xin Huang, Zhong Huang, Jian-Cheng Lai, Lei Li, Guang-Cheng Yang, Cheng-Hui LiAbstractPolymer-bonded explosives (PBXs) are often subjected to different external environmental conditions with various temperature and humidity during long-term storage, transportation, and usage process. The change in temperature and humidity will result in PBXs cracks formation and cause higher risk of explosion evolution when undergoing various stimulus including impact or friction. Herein, a self-healing polymer binder is developed to solve ...
Source: Composites Science and Technology - August 20, 2018 Category: Science Source Type: research

Counterion design of TEMPO-nanocellulose used as filler to improve properties of hydrogenated acrylonitrile-butadiene matrix
Publication date: Available online 19 August 2018Source: Composites Science and TechnologyAuthor(s): Shunsuke Fukui, Takuro Ito, Tsuguyuki Saito, Toru Noguchi, Akira IsogaiAbstractA nanocellulose containing carboxylate groups was prepared from cellulose by catalytic oxidation with the 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO). The aqueous TEMPO-oxidized cellulose nanofibrils (TOCNs) with lithium (Li+), sodium (Na+) or tetraalkylammonium (+NR4) counterions (TOCN-X) were mixed with aqueous hydrogenated acrylonitrile–butadiene rubber (H-NBR) latex, and TOCN-X/H-NBR composite films were prepared by casting and...
Source: Composites Science and Technology - August 20, 2018 Category: Science Source Type: research

A viscoelastoplastic stiffening model for plant fibre unidirectional reinforced composite behaviour under monotonic and cyclic tensile loading
Publication date: Available online 19 August 2018Source: Composites Science and TechnologyAuthor(s): F. Richard, C. Poilâne, H. Yang, F. Gehring, E. RennerAbstractAt room conditions and standard strain rate (ε˙∼10−4s−1), unidirectional (UD) plant-based reinforced organic polymers often exhibit nonlinear mechanical behaviour in tension. A viscoelastoplastic model (VEP model) for the simulation of UD plant fibre composite mechanical behaviour in tension, previously validated from twisted flax yarn epoxy composite under room conditions and standard strain rate, is calibrated with new data obtain...
Source: Composites Science and Technology - August 20, 2018 Category: Science Source Type: research

Preparation of carboxylated nitrile butadiene rubber/fly ash composites by in-situ carboxylate reaction
Publication date: Available online 18 August 2018Source: Composites Science and TechnologyAuthor(s): Shuyan Yang, Ping Liang, Kaihui Hua, Xiaokang Peng, Yanxue Zhou, Zhuodi CaiAbstractFly ash (FA) is a byproduct of thermal power stations, which causes increasing environment pollutions in the last decade. The incorporation of FA would deteriorate the performance of polymer composites even modified by silane coupling agents. Thereby, the bulk utilization of FA in polymer industry is still a challenge in the world. In this work, by in-situ carboxylate reaction between carboxyl groups of carboxylated nitrile butadiene rubber (...
Source: Composites Science and Technology - August 19, 2018 Category: Science Source Type: research

All-organic dielectric nanocomposites using conducting polypyrrole nanoclips as filler
Publication date: Available online 18 August 2018Source: Composites Science and TechnologyAuthor(s): Lin Zhang, Xu Lu, Xinyu Zhang, Li Jin, Zhuo Xu, Z.-Y. ChengAbstractAll-organic nanocomposites using conducting polypyrrole (PPy) nano-clips as fillers and poly(vinylidene fluoride-chlorotrifluoroethylene) (PVDF-CTFE) as the matrix are studied. The nanocomposites with a uniform microstructure were fabricated via a combination of a solution casting and a hot pressing process. Due to the uniform microstructure, the composites exhibit a single glass transition process, whose temperature decreases with increasing PPy content. Th...
Source: Composites Science and Technology - August 18, 2018 Category: Science Source Type: research

Effect of nano-silica filler on microstructure and mechanical properties of polydimethylsiloxane-based nanocomposites prepared by “inhibition-grafting” method
Publication date: Available online 18 August 2018Source: Composites Science and TechnologyAuthor(s): Jian Liu, Yu Cheng, Kai Xu, Lulu An, Yuhang Su, Xiaohong Li, Zhijun ZhangAbstractSilica/polydimethylsiloxane nanocomposites (denoted as SiO2/PDMS) prepared by physical mixing exhibit poor processing flexibility and strength associated with the high viscosity effect and low addition amount of silica during the fabrication of room-temperature vulcanized PDMS elastomer. Thus a facile and scalable one-step “inhibition-grafting” method was established to graft polydimethylsiloxane (PDMS) onto the surface of DNS-2 (a ...
Source: Composites Science and Technology - August 18, 2018 Category: Science Source Type: research

The effects of polybenzimidazole and polyacrylic acid modified carbon black on the anti-UV-weathering and thermal properties of polyvinyl chloride composites
In this study, the effects of polybenzimidazole (PBI) and polyacrylic acid (PAA) modified carbon black (MCB) on the anti-UV-weathering and thermal properties of PVC composites were investigated. The optimal mass ratios of PBI and MCB to PVC are 0.1 wt% and 0.2 wt%, respectively, and the resultant 1PBI/2MCB/PVC composite membrane with a thickness of about 60 μm can block over 99% of UV light below 380 nm. The UV absorption mechanism was investigated by the optional band gaps (Eg) and the fluorescence spectra. The incorporation of PBI and MCB results in a decrease in Eg, from 4.96 eV for PVC membrane to 2.90 e...
Source: Composites Science and Technology - August 18, 2018 Category: Science Source Type: research

Extremely high thermal conductivity of nanodiamond-polydopamine/thin-layer graphene composite films
Publication date: Available online 16 August 2018Source: Composites Science and TechnologyAuthor(s): Hui-Ching Yuan, Chi-Young Lee, Nyan-Hwa TaiAbstractThe hybrid composite films containing nanodiamonds (ND) coated with polydopamine (pDA) (ND-pDA) and reduced graphene oxide (rGO) converted from graphene oxide (GO) films are designed for achieving extremely high thermal conductivity. The ND-pDA/rGO films are successfully fabricated using the vacuum-filtration process followed by a heat treatment at 800 °C. The thermal conductivities of the films in the in-plane (K//) and through-plane (K⊥) directions are measured...
Source: Composites Science and Technology - August 16, 2018 Category: Science Source Type: research

Great toughness reinforcement of isotactic polypropylene/elastomer blends with quasi-cocontinuous phase morphology by traces of β-nucleating agents and carbon nanotubes
Publication date: Available online 15 August 2018Source: Composites Science and TechnologyAuthor(s): Yanhui Chen, Zhiqiang Wu, Qian Fan, Song Yang, Erchao Song, Qiuyu ZhangAbstractAiming at obtaining the polyolefin blends potentially applied in the field of the super-tough polymer products, in this work, isotactic polypropylene (iPP)/styrene-ethylene-butadiene-styrene block copolymer (SEBS) blends with great impact toughness were successfully fabricated by adding traces of β-nucleating agents (β-NAs) and carbon nanotubes (CNTs). The impact toughness of iPP blends with 30 wt% SEBS was as high as 62.4 kJ/m2, wh...
Source: Composites Science and Technology - August 15, 2018 Category: Science Source Type: research

Micro-mechanical damage model accounting for composite material nonlinearity due to matrix-cracking of unidirectional composite laminates
Publication date: Available online 13 August 2018Source: Composites Science and TechnologyAuthor(s): Ghazi A.F. Abu-Farsakh, Haitham M. Al-JarrahAbstractA new micromechanical damage model for predicting the effect of matrix-cracking on the mechanical behavior of the composite material is proposed. The model is based on the volumetric change that occurred due to the presence of cracks in a composite lamina due to uniaxial off-axis loading. It determines the volumetric crack-density (VCD) by combining the macro-mechanical and micro-mechanical principles. A representative volume-element is proposed that determines the materia...
Source: Composites Science and Technology - August 14, 2018 Category: Science Source Type: research

A new method to prepare composite powders customized for high temperature laser sintering
Publication date: 20 October 2018Source: Composites Science and Technology, Volume 167Author(s): Bahareh Yazdani, Binling Chen, Luiza Benedetti, Richard Davies, Oana Ghita, Yanqiu ZhuAbstractComposites have the potential to enhance the mechanical properties of components fabricated by additive manufacturing; however, the bottleneck is the limited number of polymeric composite powders available for this manufacturing process. This paper describes a generically new method to create composite powders that are suitable for High Temperature Laser Sintering (HT-LS). C-coated Inorganic Fullerene-like WS2 (IF-WS2) nanoparticles an...
Source: Composites Science and Technology - August 14, 2018 Category: Science Source Type: research

Largely enhanced mechanical property of segregated carbon nanotube/poly(vinylidene fluoride) composites with high electromagnetic interference shielding performance
Publication date: Available online 11 August 2018Source: Composites Science and TechnologyAuthor(s): Wan-Cheng Yu, Tao Wang, Guo-Qiang Zhang, Zhi-Guo Wang, Hua-Mo Yin, Ding-Xiang Yan, Jia-Zhuang Xu, Zhong-Ming LiAbstractConductive polymer composites (CPCs) with segregated structure exhibit outstanding electromagnetic interference (EMI) shielding performance at low filler loadings. However, the mechanical performance is compromised due to poor interfacial adhesion resulting from the selective distribution of conductive fillers. Herein, a simple and effective approach, i.e. solid-phase extrusion (SPE), was proposed to fabric...
Source: Composites Science and Technology - August 12, 2018 Category: Science Source Type: research

Enhanced fracture toughness in architected interpenetrating phase composites by 3D printing
Publication date: Available online 11 August 2018Source: Composites Science and TechnologyAuthor(s): Tiantian Li, Yanyu Chen, Lifeng WangAbstractInterpenetrating phase composite (IPC), also known as co-continuous composite, is one type of material that exhibits an unusual combination of high stiffness, strength, energy absorption, and damage tolerance. Here we experimentally demonstrate that IPCs fabricated by 3D printing technique with rationally designed architectures can exhibit a fracture toughness 16 times higher than that of conventionally structured composites. The toughening mechanisms arise from the crack-bridging...
Source: Composites Science and Technology - August 12, 2018 Category: Science Source Type: research

The potential impact of DGEBA/amine reaction kinetics on interphase formation in glass fiber composites
Publication date: Available online 11 August 2018Source: Composites Science and TechnologyAuthor(s): Gale A. HolmesAbstractA distinctive region known as the fiber-matrix (F-M) interface/interphase (I/I) is formed between the matrix and fiber during composite manufacture. This region is assumed to be created in thermoset matrices by chemistry perturbations induced during the cure reaction. These perturbations occur at the un-sized or sized fiber surface, with the sized surface typically engineered to promote adhesion between matrix and fiber. Given the importance of this region to composite performance, potential chemistry ...
Source: Composites Science and Technology - August 12, 2018 Category: Science Source Type: research

Editorial Board
Publication date: 8 September 2018Source: Composites Science and Technology, Volume 165Author(s): (Source: Composites Science and Technology)
Source: Composites Science and Technology - August 11, 2018 Category: Science Source Type: research

Retraction notice to " A transparent pressure-sensitive adhesive with high electrical conductivity based on water-soluble nano core-shell hollow composite" [CSTE 160 (2018) 119–126]
Publication date: 8 September 2018Source: Composites Science and Technology, Volume 165Author(s): Lipei Yue, Xiaoyong Zhang, Weidong Li, Yongping Bai, Yudong Huang (Source: Composites Science and Technology)
Source: Composites Science and Technology - August 11, 2018 Category: Science Source Type: research

Ultra-strong, tough and high wear resistance high-density polyethylene for structural engineering application: A facile strategy towards using the combination of extensional dynamic oscillatory shear flow and ultra-high-molecular-weight polyethylene
Publication date: Available online 9 August 2018Source: Composites Science and TechnologyAuthor(s): Tong Liu, An Huang, Li-Hong Geng, Xing-Han Lian, Binyi Chen, Benjamin S. Hsiao, Tai-Rong Kuang, Xiang-Fang PengAbstractGeneral purpose plastic materials with high strength and toughness are in great demand for structural engineering applications in recent years. Inspired by the relationship of excellent integration of mechanical performance and hierarchically ordered shish-kebab structure of polymeric materials, a facile and efficient strategy based on the combined effect of strong extensional dynamic oscillatory shear flow ...
Source: Composites Science and Technology - August 10, 2018 Category: Science Source Type: research

Modelling race-tracking variability of resin rich zones on 90° composite 2.2 twill fibre curved plate
Publication date: Available online 6 August 2018Source: Composites Science and TechnologyAuthor(s): Spiridon KoutsonasAbstractResin rich zone along component edges is a common phenomenon during composites liquid infusion with the resin transfer moulding process. The challenge in the present work is to be able to predict the realistic race-track flow behaviour along a 90° edge in order to manufacture high-quality composites materials for aerospace or other applications. To that end, there is a lack of an advanced simulation tool capable to predict the manufacture of multi-layer textile composites. The issue of 2D, 3D ra...
Source: Composites Science and Technology - August 7, 2018 Category: Science Source Type: research

Characteristics and fabrication of piezoelectric GFRP using smart resin prepreg for detecting impact signals
Publication date: Available online 7 August 2018Source: Composites Science and TechnologyAuthor(s): Mun Young Hwang, Lae-Hyong KangAbstractTo develop a composite that also functions as an impact sensor, a piezoelectric glass fiber-reinforced polymer (GFRP) was fabricated using a mixture of Pb(Ni1/3Nb2/3)O3-Pb(Zr, Ti)O3 (PNN-PZT) piezoelectric powder and epoxy as a smart resin. Prepreg sheets were prepared by impregnating glass fiber with the smart resin and the specimen was fabricated by autoclave molding. To utilize the composite as a sensor for detecting impacts, electrodes were added to the two sides of the composite, a...
Source: Composites Science and Technology - August 7, 2018 Category: Science Source Type: research

Simultaneous enhancement of toughness, strength and superhydrophilicity of solvent-free microcrystalline cellulose fluids/poly(lactic acid) fibers fabricated via electrospining approach
Publication date: Available online 7 August 2018Source: Composites Science and TechnologyAuthor(s): Xianze Yin, Yun Li, Puxin Weng, Qiao Yu, Lu Han, Jing Xu, Yinshan Zhou, Yeqiang Tan, Luoxin Wang, Hua WangAbstractIn this paper, solvent-free microcrystalline cellulose fluids (MCCFs) with liquid-like behavior were synthesized for the first time through surface grafted polyethylene glycol-substituted tertiary amines into microcrystalline cellulose (MCC) followed by fabricating MCCFs based polylactic acid (PLA) fabric (PLA/MCCFs) via electrospinning method. Owing to low viscosity of MCCFs at room temperature, the addition of ...
Source: Composites Science and Technology - August 7, 2018 Category: Science Source Type: research

Multistable cantilever shells: Analytical prediction, numerical simulation and experimental validation
Publication date: 8 September 2018Source: Composites Science and Technology, Volume 165Author(s): Matteo Brunetti, Lukasz Kloda, Francesco Romeo, Jerzy WarminskiAbstractThe numerical and experimental validation of multistable behavior of cantilever shells is addressed. The design of the laminated composite shells is driven by a recently proposed semi-analytical shell model, whose predictions are verified and critically examined by means of finite element simulations and stability tests on two manufactured demonstrators. In addition, the influence of the main design parameters on the shells stability scenario is discussed. ...
Source: Composites Science and Technology - August 7, 2018 Category: Science Source Type: research

Fabrication of polyketone-grafted multi-walled carbon nanotubes using Grignard reagent and their composites with polyketone
Publication date: Available online 4 August 2018Source: Composites Science and TechnologyAuthor(s): Jeong Ung Nam, Eun Yeob Choi, Hye Jin Park, C.K. KimAbstractA Grignard reagent containing pyrene, 1-pyrenylmethylmagnesium bromide (PMgBr), was explored as a novel reactive compatibilizer for producing aliphatic polyketone (PK) composites with multi-walled carbon nanotube (MWCNT) that had improved interfacial adhesion and mechanical strength. 1-Bromomethylpyrene (PBr) was adsorbed on MWCNTs and reacted with Mg to produce PMgBr on MWCNTs (MWCNT-PMgBr). PK-grafted MWCNT (PK-g-MWCNT) was prepared by reacting MWCNT-PMgBr with PK...
Source: Composites Science and Technology - August 5, 2018 Category: Science Source Type: research

Enhanced mechanical and thermal performances of epoxy resin by oriented solvent-free graphene/carbon nanotube/Fe3O4 composite nanofluid
Publication date: Available online 3 August 2018Source: Composites Science and TechnologyAuthor(s): Dongdong Yao, Ningkun Peng, Yaping ZhengAbstractIn this work, we report a simple strategy for improving the mechanical and thermal performances of epoxy resin using a novel magnetic composite nanofluid as filler. The magnetic nanofluid, composed of multicomponent core of graphene oxide (GO)/carbon nanotube (MWCNTs)/Fe3O4 (GMF) and shell of polyether, is fabricated via a combination of ultrasonic assisted chemical coprecipitation process and post-modification. Subsequently, epoxy/GMF composite is prepared under magnetic field...
Source: Composites Science and Technology - August 4, 2018 Category: Science Source Type: research

Effect of SWCNTs and graphene on the fatigue behavior of antisymmetric GFRP laminate
Publication date: Available online 1 August 2018Source: Composites Science and TechnologyAuthor(s): Mostefa Bourchak, Abdullah Algarni, Adnan Khan, Usama KhashabaAbstractIn this relatively unique study, the impact of adding nanoparticles (NPs) on the fatigue properties of antisymmetric glass fiber reinforced polymer (GFRP) laminate has been investigated. Antisymmetric GFRP laminates (+45/02/902/02/-45) were prepared and reinforced once with 0.1 wt.% of single walled carbon nanotubes (SWCNTs) and then with 0.1 wt.% of Graphene nanoplatelets (GNPs). The NPs reinforced GFRP laminates are termed here GFNRP nanocomposites. ...
Source: Composites Science and Technology - August 2, 2018 Category: Science Source Type: research

Structure of the in situ produced polyethylene based composites modified with multi-walled carbon nanotubes: In situ synchrotron X-ray diffraction and differential scanning calorimetry study
Publication date: Available online 1 August 2018Source: Composites Science and TechnologyAuthor(s): Mariya A. Kazakova, Alexander G. Selyutin, Nina V. Semikolenova, Arcady V. Ishchenko, Sergey I. Moseenkov, Mikhail A. Matsko, Vladimir A. Zakharov, Vladimir L. KuznetsovAbstractPolyethylene based composites modified with multi-walled carbon nanotubes (MWCNTs) were produced via in situ polymerization of ethylene with the Ti-Ziegler–Natta catalyst preliminarily immobilized on MWCNTs. The composite structure was characterized with transmission and scanning electron microscopy, differential scanning calorimetry (DSC) and i...
Source: Composites Science and Technology - August 2, 2018 Category: Science Source Type: research

Combination of 1D Ni(OH)2 nanobelts and 2D graphene sheets to fabricate 3D composite hydrogel electrodes with ultrahigh capacitance and superior rate capability
Publication date: Available online 1 August 2018Source: Composites Science and TechnologyAuthor(s): Chengen He, Shengqiang Qiu, Haiyan Peng, Qing Zhang, Xiaoyan Han, Yingkui Yang, Dean Shi, Xiaolin XieAbstractMetal compound/graphene composites have been dominantly fabricated by in-situ intercalation of metal-containing precursors into graphene or graphene oxide (GO) followed by chemical and/or thermal treatment. This process usually leads to the formation of 0D oxide nanoparticles/2D graphene composites with the limited improvements in the supercapacitor performance. Herein a facile two-step method was reported to fabricat...
Source: Composites Science and Technology - August 1, 2018 Category: Science Source Type: research

In situ self-sensing of delamination initiation and growth in multi-directional laminates using carbon nanotube interleaves
Publication date: Available online 31 July 2018Source: Composites Science and TechnologyAuthor(s): Lulu Shen, Ling Liu, Wei Wang, Yexin ZhouAbstractSelf-sensing capability of carbon nanotube buckypapers (BPs), played as in situ sensor on delamination damage in multi-directional laminates, was investigated in this paper. BPs were interleaved into these interfaces of the laminates, where delamination tends to happen firstly under tensile loading. The inserted BPs are porous and conductive, which can benefit infiltration of epoxy resin and give contribution to damage monitoring. Systematic analysis of resistance variation (&D...
Source: Composites Science and Technology - July 31, 2018 Category: Science Source Type: research

Loading rate dependency of Mode I interlaminar fracture toughness for unidirectional composite laminates
This study was conducted to investigate the effect of the loading rate on the Mode I interlaminar fracture toughness of unidirectional carbon/epoxy laminates. Double cantilever beam (DCB) test geometry was employed for both quasi-static and dynamic fracture tests. A novel dual electromagnetic Hopkinson bar was employed to load the DCB specimens dynamically and symmetrically with velocities in the range of 10–30 m/s. A hybrid experimental-numerical method was used to determine the interlaminar fracture toughness for both quasi-static and dynamic loading conditions using the virtual crack closure technique (VCCT). Th...
Source: Composites Science and Technology - July 31, 2018 Category: Science Source Type: research

Accurate evaluation of failure indices of composite layered structures via various FE models
The objective of the current work is to perform a failure evaluation of fiber composite structures based on failure indices computed using the Hashin 3D failure criterion. The analysis employs 1D and 3D finite elements. 1D elements use higher-order structural theories from the Carrera Unified Formulation based on Lagrange expansions of the displacement field. The 3D model analysis exploits ABAQUS. Attention is paid to the free-edge effects, the mode of failure initiation - matrix or fiber tension, delamination -, and the loads at which first ply failure occurs. The results underline the paramount importance of out-of-plane...
Source: Composites Science and Technology - July 30, 2018 Category: Science Source Type: research

Multi-functional interface sensor with targeted IFSS enhancing, interface monitoring and self-healing of GF/EVA thermoplastic composites
Publication date: Available online 29 July 2018Source: Composites Science and TechnologyAuthor(s): Bin Yang, Fu-Zhen Xuan, Zhenqing Wang, Liming Chen, Hongshuai Lei, Wenyan Liang, Yanxun Xiang, Kang YangAbstractDeveloping the fiber/matrix interface with combined structural and functional performances is of tremendous importance in ensuring the service safety of fiber reinforced plastic composites (FRPs) and expanding the capabilities of FRPs to perform multiple parallel tasks. Herein, a multi-functional interface sensor that can improve the interfacial shear strength, and simultaneously monitor and heal the interfacial dam...
Source: Composites Science and Technology - July 29, 2018 Category: Science Source Type: research

Structural performance and photothermal recovery of carbon fibre reinforced shape memory polymer
Publication date: Available online 29 July 2018Source: Composites Science and TechnologyAuthor(s): H.M.C.M. Herath, J.A. Epaarachchi, M.M. Islam, W. Al-Azzawi, J. Leng, F. ZhangAbstractThe shape-memory polymers (SMPs) have an interesting capability of keeping a temporary shape and then recovering the original shape when subject to a particular external stimulus. However, due to SMP's relatively low mechanical properties, the use of SMP in wider range of engineering applications is limited. As such SMP's needs to be reinforced before use in engineering applications. This paper presents the mechanical properties, thermomecha...
Source: Composites Science and Technology - July 29, 2018 Category: Science Source Type: research

Preparation of self-healing, recyclable epoxy resins and low-electrical resistance composites based on double-disulfide bond exchange
Publication date: Available online 29 July 2018Source: Composites Science and TechnologyAuthor(s): Fengtao Zhou, Zijian Guo, Wenyan Wang, Xingfeng Lei, Baoliang Zhang, Hepeng Zhang, Qiuyu ZhangAbstractVitrimers have been emerged as a new class of polymers with many attractive properties of material processing such as reshaping, recycling and repairing. Herein, a new type of vitrimers (BDSER) based on thermosetting dynamic epoxy network with double disulfide bonds was synthesized by the reaction of a difunctional epoxy monomer containing disulfide bonds with 4,4′-disulfanediyldianiline (4-AFD). Our results demonstrate...
Source: Composites Science and Technology - July 29, 2018 Category: Science Source Type: research

Effect of composite bone plates on callus generation and healing of fractured tibia with different screw configurations
Publication date: Available online 27 July 2018Source: Composites Science and TechnologyAuthor(s): Ali Mehboob, Seung-Hwan ChangAbstractIn this paper, finite element analysis of a fractured tibia with a glass/polypropylene composite implant is introduced. A rejection coefficient algorithm (for callus development) that is sensitive to interfragmentary movement is programmed, calibrated (using experimental in vivo statistics), and successfully implemented on a 3D fractured tibia model. A biphasic mechano-regulation algorithm is implemented to verify healing status under five different screw configurations (C1–C5) using...
Source: Composites Science and Technology - July 27, 2018 Category: Science Source Type: research

Thermal conductivity and tortuosity of porous composites considering percolation of porous network: From spherical to polyhedral pores
Publication date: Available online 27 July 2018Source: Composites Science and TechnologyAuthor(s): Wenxiang Xu, Mingkun Jia, Zheng GongAbstractUnderstanding the effect of percolation behavior of complex geometrical pores on the tortuosity and thermal conductivity of porous composites is very crucial to the design and optimization of porous composites. In this work, we adopt the continuum percolation theory to accurately determine the nonlinear thermal conductivity and tortuosity of porous composites composed of homogeneous solid matrix and three-dimensional pores of geometrical morphologies from the isotropic sphere to ani...
Source: Composites Science and Technology - July 27, 2018 Category: Science Source Type: research

Reaching maximum inter-laminar properties in GFRP/nanoscale sculptured aluminium ply laminates
Publication date: 20 October 2018Source: Composites Science and Technology, Volume 167Author(s): Björn Bosbach, Melike Baytekin-Gerngross, Emil Heyden, Mark-Daniel Gerngross, Jürgen Carstensen, Rainer Adelung, Bodo FiedlerAbstractThe aim of the present work is to reach maximum inter-laminar properties in fibre metal laminates (FML) consisting of glass fibre reinforced polymer (GFRP) and aluminium (Al) plies. The Al plies are AA5019 and AA5754 alloys and pre-treated by nanoscale sculpturing before the FMLs are manufactured by resin transfer moulding. The nanoscale sculpturing of the Al plies leads to the formation...
Source: Composites Science and Technology - July 26, 2018 Category: Science Source Type: research

Tribo-performance enhancement of PAEK composites using nano/micro-particles of metal chalcogenides
Publication date: 20 October 2018Source: Composites Science and Technology, Volume 167Author(s): Jitendra Narayan Panda, Jayashree Bijwe, Raj K. PandeyAbstractWhile designing the ambitious advanced composites based on PAEK (50 wt%), glass fibers (30 wt %) and natural graphite (10 wt %), it was proposed to include one more solid lubricant (10 wt %) from the category of metal chalcogenides. Particles of MoS2 and WS2 in micron and nano-sizes were selected for inclusion in combination with natural graphite. The themes for investigations were; which one is the better performer amongst MoS2 and WS2, and nano-particles ca...
Source: Composites Science and Technology - July 25, 2018 Category: Science Source Type: research

Al2O3/graphene reinforced bio-inspired interlocking polyurethane composites with superior mechanical and thermal properties for solid propulsion fuel
In this study, by cloning the reinforcing mechanisms in nacre, a nacre-inspired Al2O3/graphene/polyurethane (PU) composite with hybrid hierarchical structure, was successfully fabricated. The structural interlocking interface, together with its excellent force bearing property, leads to exceptional mechanical performance. Compared with pure PU, the bio-inspired, Al2O3/graphene reinforced PU composite demonstrates a unique improvement in Young's modulus (211%), tensile strength (41%), and compressive modulus (145%). Moreover, the thermal conductivity of Al2O3/graphene/PU composite reaches to 0.502 W m−1 K−...
Source: Composites Science and Technology - July 25, 2018 Category: Science Source Type: research

Damage detection and self-healing of carbon fiber polypropylene (CFPP)/carbon nanotube (CNT) nano-composite via addressable conducting network
Publication date: Available online 25 July 2018Source: Composites Science and TechnologyAuthor(s): Sung-Jun Joo, Myeong-Hyeon Yu, Won Seock Kim, Hak-Sung KimAbstractIn this work, damage sensing and self-healing of carbon fiber polypropylene (CFPP)/carbon nanotube (CNT) nano-composite were performed based on addressable conducting network (ACN). To increase damage sensing resolution of CFPP/CNT nano-composite, through-thickness electrical conductivity was improved by adjusting press condition and spraying carbon nanotubes (CNT) between prepregs. From the results, electrical resistivity in thickness direction was reduced to ...
Source: Composites Science and Technology - July 25, 2018 Category: Science Source Type: research

Thermo-magneto-mechanical long-term creep behavior of three-phase nano-composite cylinder
This article investigates the history of long-term radial and circumferential creep strains and radial displacement for a three-phase nano-composite exposed to an internal pressure and placed uniform temperature and magnetic field. Three-phase nano-composite made of single-walled carbon. The results in this paper were achieved by presuming a non-linear viscoelasticity, based on Shapery's integral model, classical laminate theory, Prandtl-Reuss's relation and Mendelson's approximation method. The distribution of the radial creep strain, circumferential creep strain and radial displacement in two states of with and without m...
Source: Composites Science and Technology - July 25, 2018 Category: Science Source Type: research

Multi-scale toughening of epoxy composites via electric field alignment of carbon nanofibres and short carbon fibres
Publication date: Available online 25 July 2018Source: Composites Science and TechnologyAuthor(s): Anil R. Ravindran, Raj B. Ladani, Shuying Wu, Anthony J. Kinloch, Chun H. Wang, Adrian P. MouritzAbstractThe present paper demonstrates that multi-scale fillers such as carbon nanofibres (CNFs) and short carbon fibres (SCFs) can significantly improve the mode I fracture toughness of epoxy composites by various toughening mechanisms. A comparative assessment on the toughening performance promoted by CNFs and SCFs is presented along with the effects of aligning the filler normal to the crack growth using an applied alternating ...
Source: Composites Science and Technology - July 25, 2018 Category: Science Source Type: research

Reaching maximum inter-laminar properties in GFRP / nanoscale sculptured aluminium ply laminates
Publication date: Available online 24 July 2018Source: Composites Science and TechnologyAuthor(s): Björn Bosbach, Melike Baytekin-Gerngross, Emil Heyden, Mark-Daniel Gerngross, Jürgen Carstensen, Rainer Adelung, Bodo FiedlerAbstractThe aim of the present work is to reach maximum inter-laminar properties in fibre metal laminates (FML) consisting of glass fibre reinforced polymer (GFRP) and aluminium (Al) plies. The Al plies are AA5019 and AA5754 alloys and pre-treated by nanoscale sculpturing before the FMLs are manufactured by resin transfer moulding. The nanoscale sculpturing of the Al plies leads to the formati...
Source: Composites Science and Technology - July 24, 2018 Category: Science Source Type: research

Novel phase separated multi-phase materials combining high viscoelastic loss and high stiffness
Publication date: Available online 24 July 2018Source: Composites Science and TechnologyAuthor(s): A.P. Unwin, P.J. Hine, I.M. Ward, M. Fujita, E. Tanaka, A.A. GusevAbstractIn a previous study we showed that a unique combination of high stiffness and high viscoelastic loss could be achieved by filling a polystyrene matrix with rigid inorganic spheres coated with a thin (∼200 nm) layer of a viscoelastic material. The sandwiching of this ‘lossy’ layer between the two rigid components was found to give a significant amplification of the tanδ loss peak associated with this material, without significantl...
Source: Composites Science and Technology - July 24, 2018 Category: Science Source Type: research

Thinner and better: (Ultra-)low grammage bacterial cellulose nanopaper-reinforced polylactide composite laminates
Publication date: Available online 24 July 2018Source: Composites Science and TechnologyAuthor(s): Martin Hervy, Frederic Bock, Koon-Yang LeeAbstractOne of the rate-limiting steps in the large-scale production of cellulose nanopaper-reinforced polymer composites is the time consuming dewatering step to produce the reinforcing cellulose nanopapers. In this work, we present a method to reduce the dewatering time of bacterial cellulose (BC)-in-water suspension by reducing the grammage of BC nanopaper to be produced. The influence of BC nanopaper grammage on the tensile properties of BC nanopaper-reinforced polylactide (PLLA) ...
Source: Composites Science and Technology - July 24, 2018 Category: Science Source Type: research

Mechanical interlock effect between polypropylene/carbon fiber composite generated by interfacial branched fibers
Publication date: Available online 21 July 2018Source: Composites Science and TechnologyAuthor(s): Kailin Zhang, Yijun Li, Xuewei He, Min Nie, Qi WangAbstractWeak interface is a limiting factor to prepare polymer composite with excellent properties. Here, we report an interfacial interlocking strategy to improve interfacial strength of polypropylene (PP)/carbon fiber (CF) by manipulating interfacial diffusion and aggregation of amide-based self-assembling nucleating agent (WBG) and studied the effect of CF surface nature on the interfacial structures. The experimental results showed that when the interfacial energy between...
Source: Composites Science and Technology - July 21, 2018 Category: Science Source Type: research

Extraordinary improvement of ablation resistance of carbon/phenolic composites reinforced with low loading of graphene oxide
Publication date: Available online 20 July 2018Source: Composites Science and TechnologyAuthor(s): Yuanyuan Ma, Yu Yang, Chunxiang Lu, Xiaodong Wen, Xingchen Liu, Kuan Lu, Shijie Wu, Qianxiu LiuAbstractThe effectiveness of graphene oxide (GO) on improving the ablation resistance of composite is investigated by incorporating a low concentration of GO (0.1wt%) into the carbon/phenolic (CF/PR). The X-ray diffraction, Raman spectroscopy, scanning electron microscopy and transmission electron microscopy analyses reveal that the superiority of GO-filled composite over the neat in terms of thermal resistance is associated with th...
Source: Composites Science and Technology - July 21, 2018 Category: Science Source Type: research

Exploring polyethylene/polypropylene nonwoven fabrics derived from two-dimensionally co-extruded composites: Effects of delamination, consolidation, drawing and nanoparticle incorporation on mechanics, pore size and permeability
In this study, high-density polyethylene (HDPE)/polypropylene (PP)/polystyrene (PS) and low-density polyethylene (LDPE)/PP/PS composites (fiber precursor) were melt-processed by using multilayer coextrusion. Each composite was uniaxially drawn to enhance mechanical robustness of HDPE, LDPE and PP fiber-like domains. Following the drawing process, the sacrificial PS layer was removed, and a combination of hydroentanglement, needle-punching, and compression molding was utilized to formulate dual-component HDPE/PP and LDPE/PP nonwoven mats. Drawing of the coextruded fiber precursor enhanced the tensile strength of the HDPE/PP...
Source: Composites Science and Technology - July 20, 2018 Category: Science Source Type: research

Correlation between mechanical properties and microscopic structures of an optimized silica fraction in silicone rubber
Publication date: Available online 19 July 2018Source: Composites Science and TechnologyAuthor(s): Dong Liu, Lixian Song, Hongtao Song, Jie Chen, Qiang Tian, Liang Chen, Liangwei Sun, Ai Lu, Chaoqiang Huang, Guangai SunAbstractThe mechanical properties and the hierarchical filler structures were characterized on a series silica-filled silicone rubber with a filler fraction (ΦSi) varied from 0.05 phr to 80 phr (parts per hundred rubber). Uniaxial elongation measurement suggests that there is a percolation threshold between 10 and 30 phr. Moreover, an optimum ΦSi range from 40 phr to 50 phr is found, in whi...
Source: Composites Science and Technology - July 20, 2018 Category: Science Source Type: research