聚氨酯-环氧树脂嵌段共聚水性树脂合成研究  

Study on Synthesis of Block Copolymerized Polyurethane/Epoxy Resin Waterborne Resins

作　　者：邓剑如[1] 江维胜 刘芳波 余方源 DENG Jianru;JIANG Weisheng;LIU Fangbo;YU Fangyuan(College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]湖南大学化学化工学院

出　　处：《湖南大学学报（自然科学版）》2019年第6期56-61,共6页Journal of Hunan University:Natural Sciences

基　　金：湖南省重大科技计划项目(2015GK1004)~~

摘　　要：以聚己内酯二元醇(PCL-2000)和异佛尔酮二异氰酸酯(IPDI)合成聚氨酯预聚体,将其与哌嗪及环氧树脂E-44进行扩链聚合反应,通过控制共聚物的物料配比来调节合成树脂的分子质量和柔韧性,制备系列线型多嵌段大分子树脂,将其中和水化,获得新型阳离子型水性树脂;详细阐述了实验的设计思路;探究了物料配比对树脂结构参数、水性树脂以及固化物性能的影响.结果表明,调控物料配比,可控制合成树脂分子质量、胺值、活泼氢值及水性树脂粒径的大小,固化物的拉伸强度、断裂伸长率、T_g分别在10.46~22.14 MPa、628%~190%、24.1~44.7℃区间内可调.Polyurethane prepolymers were synthesized from poly(caprolactone)diol(PCL-2000)and isophorone diisocyanate(IPDI).With a chain extension polymerization of polyurethane prepolymers,piperazine and epoxy resin E-44,and by controlling the material ratio of copolymers to adjust the molecular weight and flexibility of synthetic resin,a series of linear multi-block macromolecular resin can be made.With its neutralization hydration effect,new cationic waterborne resin can be obtained.The design idea of the experiment was introduced in detail.The effect of material ratio on the resin structure parameters,properties of waterborne resins and cured products was explored.The results show that the molecular weight of synthetic resin and the particle size of waterborne resins can be controlled by adjusting the material ratio.The tensile strength,elongation at break,Tg of cured product can be adjusted from 10.46 MPa to 22.14 MPa,629%to 190%and 24.1℃to 44.7℃,respectively.

关 键 词：聚氨酯 环氧树脂 水性树脂 聚合物材料 结构与性能 

分 类 号：O648[理学—物理化学]