Robust Superhydrophobic Composite Fabric with Self ‐Healing and Chemical Durability

Superhydrophobic self-healing coated fabrics (PA66/6-PET@Tico) are prepared using a two-step hydrothermal method based on a synergistic strategy of multi-tentacle papillary structures and low surface energy. After physical abrasion, the WCA self-healed to 165.6 ° after 9 days at room temperature; with chemical corrosion, the WCA self-healed to 163.3° after 10 min at 90 °C. The PA66/6-PET@Tico shows good superhydrophobic self-healing properties. AbstractSuperhydrophobic fabrics with multiple functions have become a research hotspot. However, it is challenging to make self-healing mechanically robust and eco-friendly superhydrophobic fabrics, which are limited by complex fabrication processes and excessive use of environmentally unfriendly solvents during fabrication. Herein, inspired by the secretion of a waxy substance from the surface of lotus leaves to restore water repellency, self-healing superhydrophobic composite fabrics (as-synthesized PA66/6-PET@Tico) are obtained by constructing a papillary TiO2 and tentacle-like fluorinated acrylate polymer (FCB015) coating on polyester-nylon composite fabrics using two-step hydrothermal method. The result indicates that PA66/6-PET@Tico with hierarchical micro/nanostructure exhibits excellent superhydrophobic and self-healing properties. Compared with FCB015 coated fabric, the contact angles (CA) of water and soybean oil rise to 172.2 ° and 166.8° from 137.4° and 98.8°, respectively. After mechanical abrasion, PA66/6-PET@Tic...
Source: Small - Category: Nanotechnology Authors: Tags: Research Article Source Type: research