聚酯二醇端羟基活性对聚酯型水性聚氨酯力学性能的影响  

Influence of Activity of Terminal OH Group of Polyester Diol on Mechanical Properties of Polyester-Based WPU

作　　者：孙彦璞[1] 

机构地区：[1]宁夏大学化学化工学院,银川750021

出　　处：《涂料工业》2009年第2期15-18,共4页Paint & Coatings Industry

基　　金：宁夏高校研究项目

摘　　要：以端羟基活性不同的聚酯二醇和四甲基苯二甲基异氰酸酯(TMXD I)为主要原料,二羟甲基丙酸(DMPA)为亲水单体,乙二胺为扩链剂,制备了聚酯型水性聚氨酯乳液。采用万能材料试验机、凝胶渗透色谱仪和差热分析仪等仪器研究了聚酯二醇端羟基活性对水性聚氨酯乳液膜力学性能的影响。实验结果表明:当聚酯二醇端羟基为伯、仲二羟基或仲二羟基时,其水性聚氨酯乳液膜存在膜脆、力学性能较差等问题;而端羟基为伯二羟基时,则不存在上述问题,其乳液膜的力学性能较好,能够达到应用要求;说明聚酯二醇的端羟基活性对聚酯型水性聚氨酯的力学性能有较大影响。The title waterborne polyurethane(WPU) latexes were synthesized by using polyester diol with terminal hydroxyls that have different activity and TMXDI as primary materials,dimethylol propionic acid(DMPA) as hydrophilic monomer and diethylamine as chain extender.The influence of different OH activity of polyester diol on the mechanical properties of the polyester-based WPU was studied by using all-purpose materials tester,gel permeation chromatography(GPC) and thermal analysis instrument.The results indicate...

关 键 词：端羟基活性 聚酯型水性聚氨酯 力学性能 

分 类 号：TQ630.4[化学工程—精细化工]