文章摘要
卢江,杨建军.氟硅烷改性水性丙烯酸二级分散体的制备与涂层性能[J].精细化工,2019,36(9):
氟硅烷改性水性丙烯酸二级分散体的制备与涂层性能
Preparation of fluoroalkylsilane modified waterborne acrylic secondary dispersion and coating properties
投稿时间:2019-01-07  修订日期:2019-04-24
DOI:
中文关键词: Micheal加成反应  氟硅烷  丙烯酸二级分散体  双组分
英文关键词: Michael addition reaction  fluoroalkylsilane  acrylic secondary dispersion  two-component
基金项目:安徽省2017年度科技攻关项目(No.1704a0902018)、安徽省高校自然科学研究重点项目(No.KJ2016A792)
作者单位E-mail
卢江 安徽大学 1439226435@qq.com 
杨建军 安徽大学 andayjj@163.com 
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中文摘要:
      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,合成出功能性有机氟硅单体(DVE),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,制备双组分水性聚氨酯(2K-WPU)涂膜。通过FTIR、1H-NMR、TG、SEM、XPS对DVE和2K-WPU进行表征和检测,结果表明:随着DVE含量的增加,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。
英文摘要:
      The functional monomer (DVE) was synthesized between 1,4,3,3-tetramethyl-1,3-divinylsilazane (DVDZ) and 2,2,3,4,4,4-Hexafluorobutyl methacrylate(EINECS) via Michael addition reaction. Subsequently, The hydroxy acrylic resin secondary dispersion was prepared using methyl methacrylate (MMA) , hydroxyethyl methylacrylate (HEMA), DVE and other monomers as materials, azobisisobutyronitrile (AIBN) as intiator, isopropanol (IPA) as co-solvent and triethylamine (TEA) as neutralizer. The modified 2K-WPU which cured by polyisocyanate and DVE were characterized by means of FTIR, 1H-NMR, TG, XEM and XPS. Moreover,the effect of DVE content on the property of acrylic resin secondary dispersion and 2K-WPU films was investigated.The results showed that when DVE content was 6% (mass fraction), the cured film had the best comprehensive performance.The characteristic decomposition temperature at 5% and 50% mass loss was 220.9℃ and 438.5℃, the water absorption was only 8.2%, and the water contact angle was 91.5°. The heat resistance,water resistance,acid resistance,alkali resistance and other performance have improved.
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