Page 212 - 《精细化工》2020年第8期

第 37 卷第 8 期 精 细 化 工 Vol.37, No.8
202 0 年 8 月 FINE CHEMICALS Aug. 2020

丙烯酸系列化学品
硅基和氨酯基协同改性水性丙烯酸树脂的制备与性能

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彭盼盼，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 γ-巯丙基三乙氧基硅烷（TMPS）、异佛尔酮二异氰酸酯（IPDI）、甲基丙烯酸羟乙酯（HEMA）为原料
合成了含硅聚氨酯小分子预聚体（IPDI-Si）。接着，以丙烯酸酯类单体为原料与 IPDI-Si 共聚，异丙醇（IPA）
为溶剂，偶氮二异丁腈（AIBN）为引发剂，制备出改性树脂聚合物。然后，以三乙胺为中和剂，加水乳化制备
了一系列巯基硅聚氨酯改性水性丙烯酸树脂分散体。采用 FTIR、XPS、TGA、TEM、SEM 等对分散体及树脂
膜材料进行了表征，并测试了分散体的贮存稳定性及胶膜的硬度、附着力等性能。结果表明，当 IPDI-Si 含量为
3%（以聚合单体的总质量为基准，下同）时，树脂分散体贮存稳定性较好，涂膜性能最佳；涂膜的致密性优异，
硬度为 2H，附着性为 1 级，水接触角 96.1°。涂膜的拉伸强度达到 9.4 MPa，断裂伸长率为 385%；热失重分析
表明，质量损失 10%时的热分解温度（T 10% ）达到 306.1 ℃。
关键词：聚氨酯；丙烯酸酯；分散体；涂膜
中图分类号：TQ630.79 文献标识码：A 文章编号：1003-5214 (2020) 08-1710-06

Preparation and properties of waterborne acrylic resin synergistic
modification by silicon and polyurethane groups

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

Abstract: Silicon-containing polyurethane pre-polymer (IPDI-Si) was prepared from γ-mercaptopropyltrieth-
oxysilane (TMPS), isophorone diisocyanate (IPDI) and hydroxyethyl methacrylate (HEMA). Then, a series
of silicon-containing polyurethane modified acrylic resin polymers with different content of IPDI-Si were
prepared with isopropyl alcohol (IPA) as solvent and 2,2′-azobis(2- methylpropionitrile) (AIBN) as initiator.
Finally, a series of waterborne acrylic resin dispersions were prepared by emulsification with triethylamine
as neutralizer in the presence of water. The dispersions and cured resin coatings were characterized by FTIR,
XPS, TGA, TEM and SEM. And the storage stability of the dispersions, the hardness, adhesion and other
properties of the coatings were tested. The results showed that when the IPDI-Si content was 3% (based on
the total mass of polymerized monomers, the same below), the prepared dispersion had better storage
stability and excellent resin coating performance. The prepared coating exhibited good compactness. The
hardness was 2H and the adhesion was grade 1. The water contact angle was 96.1°. And the tensile strength
of the coating was 9.4 MPa and elongation at break reached 385%. The thermogravimetric analysis
demonstrated that the temperature at which 10% mass loss (T 10%) of the coating reached 306.1 ℃.
Key words: polyurethane; acrylate; dispersion; coating

随着涂料行业的蓬勃发展，对涂层的功能性要 涂料具有一系列潜在的优点，如环保、无毒、不易
求越来越高，以满足实际应用中的各种要求，如附 燃、低能耗等 [3-4] 。其中，水性丙烯酸树脂是一个典
着力强、稳定性好、光泽度、防污防腐等 [1-2] 。水性 型的代表 [5-6] ，它具有优异的成膜性、光泽度、透明

收稿日期：2020-02-24; 定用日期：2020-04-26; DOI: 10.13550/j.jxhg.20200130
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：彭盼盼（1986—），男，博士生，工程师，E-mail：410001763@qq.com。联系人：杨建军（1960—），男，教授，E-mail：
andayjj@163.com。