一种O/W型聚氨酯水性外脱模剂的制备及性能研究  

Preparation and properties of an O/W type polyurethane aqueous external release agent

作　　者：陈晓[1,2] 赵启明 陶璐华 洪叶 汪灿 张文蕊 CHEN Xiao;ZHAO Qi-ming;TAO Lu-hua;HONG Ye;WANG Can;ZHANG Wen-rui(Microfluidic Synthesis and Separation Laboratory,School of Chemistry and Environment,Southwest Minzu University,Chengdu 610225,China;Key Laboratory of Basic Chemistry,National Ethnic Affairs Commission,School of Chemistry&Environment,Southwest Minzu University,Chengdu 610225,China)

机构地区：[1]西南民族大学化学与环境学院,微流体合成与分离实验室,四川成都610225 [2]西南民族大学化学与环境学院,化学基础国家民委重点实验室,四川成都610225

出　　处：《西南民族大学学报（自然科学版）》2024年第3期283-288,共6页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：国家自然科学基金青年项目(21406183);2023年西南民族大学国家级大学生创新创业计划项目(202310656020X)。

摘　　要：传统油基脱模剂含有可能对环境产生污染的有机溶剂,随着全球环保意识的增强,更为绿色环保无毒的水性脱模剂逐渐成为研究热点.为了开发汽车内饰使用的新型脱模剂,以二甲基硅油、含氢硅油等为主要原料,制备出一种O/W型聚氨酯水性外脱模剂.通过测定脱模剂样品性能,探讨了主脱模剂种类及配比、乳化体系复配比例对脱模剂性能的影响.采用能谱仪(EDS)对脱模后的聚氨酯泡沫表面进行元素分析.结果表明:二甲基硅油和含氢硅油按照1∶1配比作为基础聚合物,固含量19.41%,采用非离子表面活性剂SP⁃80、TW⁃80复合乳化体系制备的O/W型聚氨酯水性外脱模剂稳定性最好,脱模后的聚氨酯泡沫表面没有Si元素残留,具有最佳脱模效果.Traditional oil⁃based release agents contain organic solvents that may pollute the environment.With the enhancement of global environmental protection awareness,more green and non⁃toxic water⁃based release agents have gradually become a re⁃search focus.In order to develop a new release agent for automotive interior,an O/W type polyurethane waterborne external re⁃lease agent was prepared with dimethyl silicone oil and hydrogen⁃containing silicone oil as the main raw materials.By measuring the properties of the release agent samples,the effects of the type and ratio of the main release agents and the ratio of compound emulsifiers on the properties of the release agent were discussed.The elemental analysis of the surface of polyurethane foam after mold release was carried out by energy dispersive spectrometer(EDS).The results showed that the ratio of dimethylsilicone oil and hydrosilicone oil was 1∶1 as the base polymer,and the solid content was 19.41%.The O/W type polyurethane aqueous ex⁃ternal release agent prepared by SP⁃80 and TW⁃80 composite emulsion system had the best stability,and no Si element remained on the surface of the polyurethane foam after release,which had the best release effect.

关 键 词：O/W型乳液 水性外脱模剂 聚氨酯发泡 脱模效果 稳定性 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]