Chemical stable, superhydrophobic and self-cleaning fabrics prepared by two-step coating of a polytetrafluoroethylene membrane and silica nanoparticles
Source abstract
Abstract
A superhydrophobic aramid fabric with a novel self-cleaning ability and excellent chemical stability was prepared by the two-step coating technique using an easily available material system consisting of a polytetrafluoroethylene (PTFE) membrane, particles of PTFE and silica (SiO 2 ). The chemical resistant layer was achieved through compounding aramid fabric with the PTFE membrane, for which the contact angle was varied from completely infiltrating to 130°. Then the PTFE-coated fabric was modified with PTFE and SiO 2 particles to obtain the superhydrophobic layer. The hydrophobicity was significantly enhanced with a contact angle of 154° and rolling angle of 4° due to the role of low surface energy and rough micro/nano structures. Furthermore, the PTFE/SiO 2 -coated fabric eventually fabricated could withstand at least 300 cycles of abrasion and strong acid/alkaline attacks for 100 hours. In addition, the breathable performance and flexibility of the coated fabric were within our acceptable ranges. The simple but effective PTFE/SiO 2 -coated fabric may be useful for the development of individual protective clothing for emergency rescue applications.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Advanced Sensor and Energy Harvesting Materials · Fiber-reinforced polymer composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Textile Science & Technology, Donghua University, China
Funding
the National Key R&d Program of China
References (54)
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