Page 169 - 《精细化工》2020年 第10期

第 37 卷第 10 期 精 细 化 工 Vol.37, No.10
2020 年 10 月 FINE CHEMICALS Oct. 2020

皮革化学品
环氧树脂改性含硅自消光水性

聚氨酯树脂的制备及性能

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唐 慧，杨建军 ，吴庆云，吴明元，张建安，刘久逸
（安徽大学 化学化工学院 安徽省绿色高分子材料重点实验室，安徽 合肥 230601）

摘要：以聚己二酸-1,4-丁二醇酯二醇（PBA）、异佛尔酮二异氰酸酯（IPDI）、二羟甲基丙酸（DMPA）、1,4-丁二
醇（BDO）、端羟丙基聚二甲基硅氧烷（PDMS）为单体合成聚氨酯预聚体，然后以三乙胺（TEA）为中和剂，
乙二胺（EDA）为后扩链剂，合成了一系列环氧树脂改性含硅自消光水性聚氨酯树脂乳液。采用粒度分析仪测
定乳液粒径，FTIR 表征胶膜表面结构，SEM 观察胶膜表面，并分析了胶膜的 60°光泽度、水接触角、热力学等
性能。结果表明，在 n(PBA)∶n(PDMS)=1∶2 的条件下，环氧树脂 E-51 添加量 5.0%（以预聚体总质量为基准，
下同）时，乳液粒径为 1152 nm，胶膜 60°光泽度为 3.4；水接触角平均值为 107.3°，疏水性能最优；胶膜拉伸
强度可达 24.42 MPa，断裂伸长率在 362%，力学性能最优；胶膜热失重 50%时温度较未添加 E-51 的胶膜提高
了 18.3 ℃。
关键词：水性聚氨酯；硅；环氧树脂；自消光；皮革化学品
中图分类号：TQ323.8 文献标识码：A
文章编号：1003-5214 (2020) 10-2099-06 开放科学 (资源服务) 标识码 (OSID)：

Preparation and properties of self-matting waterborne
polyurethane with silicon modified by epoxy resin

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TANG Hui, YANG Jianjun , WU Qingyun, WU Mingyuan, ZHANG Jian'an, LIU Jiuyi
（Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province, School of Chemistry and Chemical
Engineering, Anhui University, Hefei 230601, Anhui, China）

Abstract: Polyurethane prepolymer was synthesized from poly(1,4-butanediol adipate) (PBA), isophorone
diisocyanate (IPDI), dimethylolpropionic acid (DMPA), 1,4-butanediol (BDO) and hydroxypropyl terminated
polydimethylsiloxane (PDMS). Then, a series of silicone-containing self-matting waterborne polyurethane
emulsions were synthesized with triethylamine (TEA) as neutralizer and ethylene diamine (EDA) as post
chain extender by addition of epoxy resin into the polyurethane prepolymer. The particle size of emulsion
was measured by particle size analyzer. The films were characterized by FTIR and SEM. The properties
such as 60° gloss, water contact angle and thermodynamics of the films were analyzed. The results
indicated that under the conditions of n (PBA)∶n(PDMS)=1∶2, additive amount of epoxy resin E-51 of
5.0% (based on the total mass of the prepolymer, the same below), the particle size of the prepared emulsion
was 1152 nm, the 60° gloss and the average water contact angle of the corresponding film was 3.4 and
107.3°. Furthermore, the film showed the best hydrophobicity and mechanical properties. The tensile
strength was 24.42 MPa and the elongation at break was 362%. The thermal decomposition temperature at
50% mass loss of this film was 18.3 ℃ higher than that of the unmodified polyurethane film.
Key words: waterborne polyurethane; silicone; epoxy resin; self-matting; leather chemicals

水性聚氨酯（WPU）亚光涂料具有色泽柔和、 环保和更具高级感而越来越受到人们的喜爱 [1-2] 。目

收稿日期：2020-05-21; 定用日期：2020-06-19; DOI: 10.13550/j.jxhg.20200423
基金项目：安徽省 2017 年度科技计划重点项目（1704a0902018）；安徽省高校自然科学研究重点项目（KJ2016A792）
作者简介：唐 慧（1992—），女，硕士生，E-mail：1726635654@qq.com。联系人：杨建军（1960—），男，教授，E-mail：andayjj@163.com。