玻璃化转变型温敏透湿织物涂层胶的制备  

Preparation of Fabric Coatings with Thermal-sensitive Water Vapor Permeability Feature and Using T_g as Switch

作　　者：纪凤龙 胡金莲[2] 何兆源 林子睿 王官扬 李健祥 JI Fenglong;HU Jinlian;HE Zhaoyuan;LIN Zirui;WANG Guanyang;LI Jianxiang(School of Textile Materials and Engineering, Wuyi University, Jiangmen 529020, Guangdong, China;Institute of Textiles Clothing, Hong Kong Polytechnic University, Hong Kong, China;Jiangmen Guanda Chemical Science and Technology Co. Ltd, Jiangmen 529157, Guangdong, China)

机构地区：[1]五邑大学纺织材料与工程学院,广东江门529020 [2]香港理工大学纺织及制衣学系,香港 [3]江门市冠达化工科技有限公司,广东江门529157

出　　处：《聚氨酯工业》2019年第3期5-8,共4页Polyurethane Industry

基　　金：五邑大学校青年基金(编号31222010);五邑大学2016年度大学生创新创业训练计划项目(201611349037)

摘　　要：制备了单组分水性形状记忆聚氨酯(1KWPU)和双组分水性聚氨酯(2KWPU)涂层胶。研究了交联剂和羟丙基-β-环糊精(H-CD)的用量对胶膜及织物涂层性能的影响。结果表明,1KWPU的玻璃化转变温度(Tg)约为25 ℃左右。可水分散多异氰酸酯作为1KWPU的交联剂能促进聚氨酯相分离。添加H-CD能明显降低2KWPU的Tg。制备的涂层织物在20~36 ℃的温度范围内具有温敏透湿性。随着交联剂用量的增加,涂层织物的耐静水压提高,而透湿性能下降。引入H-CD后,涂层织物的透湿性增加,但耐水压降低。当H-CD的质量分数为5%~7.5%时,涂层织物有较高的透湿性和耐静水压。A one-component waterborne shape memory polyurethane (1KWPU) and several two-component waterborne polyurethanes (2KWPU) fabric coatings were prepared. The influences of the contents of cross-linkers and hydroxypropyl-β-cyclodextrin (H-CD) on the properties of fabric coatings were investigated. The results revealed that T g of the 1KWPU was about 25 ℃. The presence of water-dispersible polyisocyanates cross-linkers improved the phase separation of the polyurethanes. It was experimentally proved that water vapor permeability(WVP) of the coated fabrics exhibited apparent thermal-sensitive WVP feature in the temperature range 20~36 ℃. With the increase of the content of cross-linkers, resistance to hydrostatic pressure of the coated fabrics increased while WVP reduced. Incorporating H-CD into the polyurethanes resulted in the increse of WVP and the decrease of resis- tance to hydrostatic pressure of the coated fabrics. When the content of the H-CD was 5%~7.5%, the coated fabrics exhibited good thermal sensitive WVP characteristic and high resistance to hydrostatic pressure.

关 键 词：水性聚氨酯 温敏 形状记忆 透湿性 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]