水性聚氨酯乳液的无溶剂法制备及乳化工艺研究  

Preparation and emulsification technology of waterborne polyurethane emulsion by solvent-free process

作　　者：李宁[1] 李震 熊晓莉[1] 陈盛明[1] 张珂 李有刚 LI Ning;LI Zhen;XIONG Xiaoli;CHEN Shengmin;ZHANG Ke;LI Yougang(Department of Materials Science&Engineering,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Zhongkelitai Polymer Materials Co.Ltd.,Chongqing 401336,China;College of Polymer Science&Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]重庆工商大学材料科学与工程系,重庆400067 [2]重庆中科力泰高分子材料股份有限公司,重庆401336 [3]四川大学高分子科学与工程学院,成都610065

出　　处：《功能材料》2018年第10期199-204,共6页Journal of Functional Materials

基　　金：中央财政支持地方高校发展专项资金环境与能源催化创新团队建设资助项目(渝财教[2017]91号)

摘　　要：以异佛尔酮二异氰酸酯(IPDI)、新戊二醇己二酸酯二元醇(NPGA-1500)为主要原料,以三乙胺(TEA)为中和剂,以乙二胺(EDA)为扩链剂,通过无溶剂法制备了水性聚氨酯乳液。研究了搅拌转速、三乙胺中和时间、乳化温度、加水速度、乙二胺扩链方式等因素对无溶剂型水性聚氨酯乳液性能的影响。结果表明,在3 000r/min转速、5min中和时间、40℃乳化温度、50mL/min加水速度、乙二胺后扩链的条件下,可制得粒径为(180±19)nm,且稳定性和涂膜力学性好的无溶剂型水性聚氨酯乳液。Waterborne polyurethane(WPU)emulsions were prepared by solvent-free method using isophorone diisocyanate(IPDI)and neopentyl glycol adipate diol as main raw materials,triethylamine as neutralizer,and ethylenediamine as chain extender in the preparation procedure.The influence of stirring speed,neutralization time of triethylamine,emulsification temperature,water addition speed and chain extension method of ethylenediamine on the properties of WPU emulsions was studied.The results showed that under the conditions of rotation speed 3 000 r/min,neutralization time 5 min,emulsification temperature 40℃,water adding speed 50 mL/min and post-chain extension method,the waterborne polyurethane emulsion with(180±19)nm particle diameters was obtained.The waterborne polyurethane emulsion has good storage stability,and the film formed by the emulsion has good mechanical properties.

关 键 词：无溶剂法 水性聚氨酯 乳化工艺 涂膜性能 乳液性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]