Hydrophobic Modification of TPU Films for Use in Storm-resistant Fabrics
Source abstract
Abstract
Waterproof moisture-permeable films with excellent water resistance and breathability are employed in functional clothing to improve the comfort of wearers. Although polytetrafluoroethylene microporous membranes exhibit outstanding water resistance and moisture permeability, their application is limited because of the environmental impact of fluorinated compounds. For this reason, herein, we aimed to improve the hydrophobicity of thermoplastic polyurethane (TPU) microporous membranes while maintaining their moisture permeability. We employed silane coupling agents to modify nanosilica particles, which were then coated on TPU microporous membranes to enhance their waterproof performance. The optimized parameters for the modification process of silica nanoparticles are γ-aminopropyltriethoxysilane and hexadecyltrimethoxysilane (silane coupling agents) concentrations of 8% relative to the mass of silica, a modification time of 2 h, and a temperature of 70°C. The water contact angle of the particles modified under these conditions reached 138.58°. The modified SiO 2 particles were used to treat the TPU film, with an optimal mass fraction of the modified silica of 3% and a modification time of 4 h. The water vapor transmission of the modified TPU film was 5661.92 g/(m 2 ·24 h), with enhanced hydrophobicity, and its water absorption rate was 12.41%, which is 16.49% lower than before modification. Additionally, under simulated heavy rain conditions, the water absorption rate of the composite fabric with modified TPU film was lower by 14.7% than that of the composite fabric with unmodified film.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Electrospun Nanofibers in Biomedical Applications · Textile materials and evaluations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, PR China
Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing, PR China
References (24)
Show source-provided references
1. Wang XL. Waterproof and moisture permeable outdoor sports products and future development trends. China Text Leader 2024; 4: 68–72.
2. Yang GX, Zhang QL, Li XC, et al. Preparation and property optimization of waterproof and moisture permeable membrane made from thermally induced fusion bonded polyurethane/polydimethylsiloxane. J Text Res 2023; 44(3): 28–35.
3. Qiu HL, Yang Q, Cui J, et al. Research progress and application of waterproof and moisture permeable membranes on textiles. Adv Text Technol 2023; 31(2): 244–255.
4. 10.1002/mame.20160027210.1002/mame.201600272 ↗
5. 10.1039/C5GC02725J10.1039/C5GC02725J ↗
6. 10.1021/acsami.8b0270710.1021/acsami.8b02707 ↗
7. 10.1016/j.jmrt.2021.03.05510.1016/j.jmrt.2021.03.055 ↗
8. 10.3390/molecules2608225410.3390/molecules26082254 ↗
9. 10.1016/j.colsurfa.2019.12367410.1016/j.colsurfa.2019.123674 ↗
10. 10.1016/j.jcis.2019.01.11510.1016/j.jcis.2019.01.115 ↗
11. 10.1016/j.porgcoat.2020.10571010.1016/j.porgcoat.2020.105710 ↗
12. Jiang Z. Research on modification of nano-silica by KH550. Shanghai Chem Ind 2023; 48(4): 10–14.
13. Zhang YC, Jiang LF. Preparation and properties of KH550 modified SiO2/TPU composites. Guangzhou Chem Ind 2021; 49(4): 41–43.
14. Tian GL, Ma XX, Lü HF, et al. Super-hydrophobic preparation for bamboo by sol-gel progress. J Northeast For Univ 2015; 43(2): 84–86.
15. Liu HY, Li DL, Li X. Surface modification of nano-silica by silane coupling agent KH-560. Chem World 2011; 52(8): 456–458.
16. Tan XM, Feng AS, Zhao HQ. Graft modification of SiO2 nano-particles with silane coupling agent. China Powder Sci Technol 2011; 17(1): 14–17.
17. Zhu GZ, Li WJ, Wang XM, et al. Condition optimization of KH550 modified micron silica. China Powder Sci Technol 2020; 26(4): 33–37.
18. Cao J, Zhang YX, Wang XZ, et al. Study on the condition of silane coupling agent modifying Al2O3 nanoparticles. New Chem Mater 2016; 44(12): 207–209.
19. 10.1016/j.polymer.2018.07.02910.1016/j.polymer.2018.07.029 ↗
20. He ST, Liu BC. Surface modification of nano-SiO2. Appl Chem Ind 2017; 46(4): 693–697.
21. Zhang YB, Zhang ZZ, Luo YF, et al. Preparation and property study of fumed silica-containing aqueous polyurethane coating agent. China Text Leader 2013; 8: 66–68.
22. Gao DG, Zhang WB, Ma JZ. Research and development of moisture-management fabric. China Dyeing Finishing 2011; 37(21): 45–50.
23. Xu SL, Yang SY, Zhang YR, et al. Preparation and properties of thermoplastic polyurethane/teflonorone amorphous fluoropolymer superhydrophobic nanofiber membranes. J Text Res 2021; 42(12): 42–48.
24. Wang YH, Ma WB, Zhou YF, et al. Preparation and properties of electrospun polyurethane nanofiber membrane. China Plast Ind 2019; 47(8): 151–155.