纺织工程学报2026，Vol.4Issue(3)：75-85,11.DOI:10.20150/j.cnki.fzgcxb.2026.03.007
具有防水透湿功能的PVDF-HFP/PMHS辐射制冷膜的制备及性能研究
Preparation and performance study of PVDF-HFP/PMHS ra-diative cooling film with waterproof and breathable properties
摘要
Abstract
Traditional cooling technologies are associated with high energy consumption and environmental pollution.Passive radiative cooling technology has attracted increasing attention as a promising green alternative.However,exist-ing radiative cooling materials are susceptible to environmental factors such as water vapor and pollutants in complex environments,leading to performance degradation.Poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)and polymethylhydrosiloxane(PMHS)were used as raw materials to fabricate porous membranes with both waterproof breathable and radiative cooling properties via the phase separation method.The effects of PMHS addition amount on the membrane's microstructure,surface chemical properties,waterproof breathable performance,and radiative cooling properties were systematically investigated.Results show that when the mass ratio of PVDF-HFP to PMHS is 2.5∶2.2,the membrane exhibits the optimal comprehensive performance:its water contact angle reaches 136°,hydrostatic pres-sure is 14.1 kPa,and moisture vapor transmission rate is 4.22 kg·m-2·d-1,indicating excellent waterproof and breathable performance.The micro/nanoporous structure(average pore size of 1.45 µm)formed inside the membrane matches the solar wavelength range(300～2 500 nm),which significantly enhances the Mie scattering effect and results in a solar re-flectance of 91.5%.Meanwhile,the membrane has an average infrared emissivity of 96.03%in the atmospheric window band(8～13 µm).Outdoor actual measurements show that the membrane can achieve a cooling effect of 5.9 ℃ under di-rect solar irradiation.The radiative cooling material prepared in this study integrates waterproof and breathable proper-ties,weather resistance,and efficient radiative cooling performance,showing broad application prospects in the fields of building energy conservation,automotive industry,and smart textiles.关键词
辐射制冷/相分离/PVDF-HFP/PMHS/防水透湿Key words
radiative cooling/phase separation/PVDF-HFP/PMHS/waterproof and breathable分类
通用工业技术引用本文复制引用
吴广发,罗家俊,赵振鸿,姜起蛟,赵景..具有防水透湿功能的PVDF-HFP/PMHS辐射制冷膜的制备及性能研究[J].纺织工程学报,2026,4(3):75-85,11.基金项目
广东省自然科学基金面上项目(2024A1515012048和2026A1515012084) （2024A1515012048和2026A1515012084）
广东省重点建设学科科研能力提升项目(2024ZDJS038) （2024ZDJS038）
国家自然科学基金项目(52203068) （52203068）
