低粘度超支化聚醚环氧树脂改性水性环氧地坪涂料研究  

Low viscosity hyperbranched polyether epoxy resin modified waterborne epoxy floor coatings

作　　者：陶祥 胡彩芳 葛翱翔 李小杰 TAO Xiang;HU Cai-fang;GE Ao-xiang;LI Xiao-jie(School of Chemistry and Material Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122

出　　处：《热固性树脂》2024年第6期26-31,36,共7页Thermosetting Resin

基　　金：国家自然科学基金(5217312721504032);江苏省青蓝工程。

摘　　要：通过A_(2)+B_(3)法合成了一种低粘度超支化聚醚环氧树脂(HBTE),利用傅里叶变换红外光谱、核磁氢谱和凝胶渗透色谱表征了HBTE的化学结构和分子质量。将HBTE添加到E51/RE225乳化体系中,制备了水性环氧乳液,并将其与水性胺固化剂和填料复配成水性环氧地坪涂料。实验结果表明:HBTE的加入可以降低乳化体系的粘度,减小乳液粒径。当HBTE添加的质量分数为5%时,漆膜的耐冲击性、柔韧性、耐磨性和耐化学介质性均获得一定的提升,且涂层的邵氏硬度和磨耗分别达到了84D和19.03mg。A low viscosity hyperbranched polyether epoxy resin(HBTE)was synthesized by A_(2)+B_(3)method,and its chemical structure and molecular weight were characterized by FT-IR,H-NMR and GPC.The waterborne epoxy emulsions were prepared by adding HBTE to the E51/RE225 emulsion system,and compounded with waterborne amine curing agents and fillers to form waterborne epoxy floor coatings.The experimental results showed that the addition of HBTE could reduce the viscosity of the emulsion system and the particle size of emulsions.When the mass fraction of added HBTE was 5%,the impact resistance,flexibility,wear resistance,and chemical resistance of coatings were all improved,and the Shore hardness and abrasion of the coatings were 84 D and 19.03 mg,respectively.

关 键 词：低粘度 超支化环氧树脂 环氧乳液 水性环氧地坪涂料 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]