Page 215 - 精细化工2019年第9期

第 36 卷第 9 期 精 细 化 工 Vol.36, No.9
201 9 年 9 月 FINE CHEMICALS Sept. 2019

丙烯酸系列化学品
氟硅烷改性水性丙烯酸二级分散体的

制备与涂层性能

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卢 江，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 安徽省绿色高分子重点实验室，安徽 合肥 230601）

摘要：将 1,1,3,3-四甲基-1,3-二乙烯硅氮烷（DVDZ）和甲基丙烯酸六氟丁酯（EINECS）进行 Micheal 加成反应，
合成 2,2,3,4,4,4-六氟丁基-3-（二（二甲基（乙烯基）硅基）氨基）-2-甲基丙酸酯（DVE）功能有机氟硅单体，
与甲基丙烯酸甲酯（MMA）、甲基丙烯酸羟乙酯（HEMA）等单体混合，以偶氮二异丁腈（AIBN）为引发剂，
异丙醇（IPA）为溶剂，合成氟硅烷改性水性丙烯酸二级分散体。然后，将其与异氰酸酯固化剂混合，制备了双
1
组分水性聚氨酯（2K-WPU）涂膜。通过 FTIR、 HNMR、TG、SEM、XPS 对 DVE 和 2K-WPU 进行表征和检
测，结果表明：随着 DVE 质量分数的增加，丙烯酸二级分散体的粒径增大，黏度降低，涂膜的耐水性增强，铅
笔硬度和附着力减弱。当 DVE 质量分数为 6%时，吸水率为 8.2%，接触角为 91.5，热失重 10%和 50%时的温
度分别为 220.9 和 438.5 ℃，涂膜耐热、耐水和耐酸碱等性能均有提升。
关键词：Micheal 加成反应；氟硅烷；丙烯酸二级分散体；双组分；丙烯酸系列化学品
中图分类号：TQ630.1 文献标识码：A 文章编号：1003-5214 (2019) 09-1943-06

Preparation and Coating Properties of Fluoroalkylsilane Modified
Waterborne Acrylic Secondary Dispersion

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LU Jiang, YANG Jian-jun , WU Qing-yun, WU Ming-yuan, ZHANG Jian-an, LIU Jiu-yi
（Key Laboratory of Environment-friendly Polymer Materials of Anhui Province, School of Chemistry and Chemical
Engineering of Anhui University, Hefei 230601, Anhui, China）

Abstract: Fluoroalkylsilane functional monomer, (2,2,3,4,4,4-hexafluorobutyl-3-(bis(dimethyl(vinyl)silyl)
amino)-2-methylpropanoate (DVE) was synthesized via Michael addition reaction between 1,1,3,3-
tetramethyl-1,3-divinylsilazane (DVDZ) and 2,2,3,4,4,4-hexafluorobutyl methacrylate (EINECS). Subsequently,
a series of fluoroalkylsilane modified waterborne acrylic secondary dispersions were prepared using DVE,
methyl methacrylate (MMA) and hydroxyethyl methylacrylate (HEMA) as main monomers,
azobisisobutyronitrile (AIBN) as initiator, and isopropanol (IPA) as solvent. Then, the prepared waterborne
acrylic secondary dispersions mixed with isocyanate curing agent to obtain a series of two-component
aqueous polyurethane (2K-WPU) coatings. DVE and 2K-WPU were characterized by means of FTIR,
1 HNMR, TG, SEM and XPS. The results showed that with the increase of DVE content, the particle size of
acrylic secondary dispersion increased, the viscosity decreased, the water resistance of the cured film
increased, and the pencil hardness and adhesion decreased. When DVE mass fraction was 6%, the cured
film had the best comprehensive performance. The water absorption was only 8.2%, the water contact angle
was 91.5, and the temperatures at 10% and 50% weight loss were 220.9 ℃ and 438.5 ℃, respectively.
The properties of the coating film, such as heat resistance, water resistance and acid and alkali resistance,
were greatly improved.
Key words: Michael addition reaction; fluoroalkylsilane; acrylic secondary dispersion; two-component;
series of acrylic chemicals

收稿日期：2019-01-07; 定用日期：2019-04-25; DOI: 10.13550/j.jxhg.20190027
基金项目：安徽省 2017 年度科技攻关项目（1704a0902018）；安徽省高校自然科学研究重点项目（KJ2016A792）
作者简介：卢 江（1994—），男，硕士生。联系人：杨建军（1960—），教授，博士生导师，E-mail：andayjj@163.com。