相变微胶囊涂层织物在热防护服中的应用

Application of fabric coated with phase change microcapsule in thermal protective clothing

为优化热防护服的热防护性能,将相变微胶囊涂层织物应用于织物系统中,制成具有调温功能的新型热防护服织物系统。选取4种相变温度的微胶囊悬浮液,制成3种相变含量的涂浆,采用干法涂层工艺制成涂层织物。测试涂层织物的基本性能变化,利用接触热防护测试仪评价织物系统的防护性能。结果表明:涂层处理后织物拉伸性能、导热系数均增大,相变焓与含量呈正相关关系;同时,涂层处理显著提高织物系统的热防护性能,二级烧伤时间平均延长66%,与微胶囊含量、相变温度以及相变焓密切相关。

In order to optimize protective performance of thermal protective clothing,a new type of thermal protective fabric system featuring temperature regulation function was made by applying fabrics coated with phase change microcapsule to system.Then,microcapsule suspension at four types of phase change temperature was selected to make coating at three phase change content,and coated fabric was prepared by using dry coating process.Finally,fundamental performance changes of fabric were tested,and thermal protective performance of fabric system was evaluated based on a hot contact test device.The results show that tensile properties and thermal conductivity of fabric increase after coating,and phase change enthalpy is positively correlated with content.Meanwhile,coating improves thermal protective performance significantly,and prolongs time for second-degree burn by 66%on average.In addition,its protective performance is closely linked with content of microcapsules,phase change temperature and enthalpy.