宇航材料工艺2025，Vol.55Issue(1)：68-75,8.DOI:10.12044/j.issn.1007-2330.2025.01.009
防潮复合膜水分子扩散吸附规律及其老化性能研究
Research on Diffusion and Adsorption Behavior of Water Vapor Molecules of Moisture-proof Composite Plastic Films and Its Aging Properties
王小黎 1李星华 1许文 1吴昊昱 2高洋洋 2张欢1
作者信息
- 1. 航天材料及工艺研究所,北京 100076
- 2. 北京化工大学北京市先进弹性体工程技术研究中心,北京 100029
- 折叠
摘要
Abstract
In order to investigate the barrier properties of multi-layer moisture-proof composite plastic films against water vapor molecules,the diffusion and adsorption behavior of water vapor molecules in the composite films were studied by molecular dynamics simulation.And the permeability coefficient(the product of diffusion coefficient and solubility coefficient)of water vapor molecules in the composite films were obtained by using the parallel model.The results show that the diffusion coefficient of water vapor molecules in the composite films increase with the increase of temperature,while the solubility coefficient gradually decreases with the increase of temperature,and the permeability coefficient gradually increase with the increase of temperature.At the same time,polyvinylidene chloride(PVDC)exhibits the best water vapor barrier performance in the moisture-proof membranes,followed by polyethylene(PE),and finally nylon 6(PA6).Additionally,to study the aging resistance of the composite films,the chemical structure and thermal stability of the composite films under different aging times and relative humidities were studied by Fourier infrared spectroscopy,thermogravimetric analysis and differential scanning calorimetry.The results show that composite films exhibit excellent stability,with no significant changes in material properties.关键词
防潮复合膜/水蒸汽分子/渗透系数/分子模拟/老化Key words
Moisture-proof composite plastic films/Water vapor molecules/Permeability coefficient/Molecular dynamics simulation/Aging分类
通用工业技术引用本文复制引用
王小黎,李星华,许文,吴昊昱,高洋洋,张欢..防潮复合膜水分子扩散吸附规律及其老化性能研究[J].宇航材料工艺,2025,55(1):68-75,8.
