基于羧酸-磺酸盐的聚氨酯乳液的制备及性能研究  

Preparation and Properties of Polyurethane Macromolecular Surfactant Based on Sulfonate

作　　者：王磊[1] 赵新智 赖小娟[1] 杨燕[1] 

机构地区：[1]陕西科技大学化学与化工学院,西安710021 [2]中国石油长庆油田分公司第二输油处,西安710021

出　　处：《聚氨酯工业》2012年第3期9-12,共4页Polyurethane Industry

基　　金：陕西省自然科学基金项目(2009JQ6003;2010JQ6013);陕西省教育厅项目(11JS023);陕西科技大学博士科研启动基金项目(BJ11-17)

摘　　要：以二羟甲基丙酸(DMPA)和1,2-二羟基-3-丙磺酸钠(DHPA)为亲水扩连剂制备含有磺酸基团的水性聚氨酯微乳液。利用傅立叶变换红外光谱(FT-IR)对DHPA和水性聚氨酯的结构进行表征,证实了目标产物DHPA的生成,并作为亲水扩链剂引入PU链上。研究表明,随着DHPA含量增大,乳胶粒平均粒径减小,粒径分布宽度变窄。聚氨酯乳液呈假塑性流体特征。所制得的聚氨酯表面活性剂对丙烯酸单体具有良好的乳化性能,可用于乳液聚合中。Waterborne polyurethane （WPU） emulsions with sulfonic group were synthesized using dimethylol propionic acid （ DMPA ） and 1,2-dihydroxy-3-propanesulfonate （ DHPA ） as hydrophilic chain-extending agents. The structure of DHPA and the WPU film were characterized by FY-IR. FT-IR indicated that DHPA was introduced into the polyurethane chain. The average particles size of polyurethane emulsions decreased with the increasing DH- PA content, while the particle size distribution was narrow. The polyurethane emulsions were pseudoplastic fluid. The prepared polyurethane macromolecular surfactant had good emulsifying ability for acrylic monomer, which could be used in emulsion polymerization.

关 键 词：磺酸盐 水性聚氨酯 表面活性 性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]