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Structure and Properties of Cured Film Based on Acrylate/Aziridine 2K Waterborne Coatings
Author(s): Zhang Yubo, Wang Lianshi, Ruan Weiming, Feng Zhaohua
Pages: 25-
32
Year: 2014
Issue:
11
Journal: Paint & Coatings Industry
Keyword: acrylate resin; aziridine; amino resin; water-borne coating;
Abstract: 在甲基丙烯酸甲酯(MMA)和丙烯酸丁酯(BA)混合单体中分别加入功能单体甲基丙烯酸(MAA)和甲基丙烯酸乙酰乙酰氧基乙酯(AAEM),合成了丙烯酸酯树脂(WA).用氮丙啶作固化剂制备了WA/氮丙啶双组分水性涂料.研究了氮丙啶的用量、功能单体的用量和固化温度对WA/氮丙啶水性涂料固化涂膜的物理机械性能及耐水性的影响,并与WA/氨基树脂水性涂料固化涂膜的性能作了对比.结果表明:随着氮丙啶和功能单体用量的增加,WA/氮丙啶固化涂膜的耐水性先提高后下降,其他性能变化不大,当功能单体用量在9%~ 11%,氮丙啶用量在20% ~ 30%,在130℃固化30min时,WA/氮丙啶固化涂膜便具有优良的物理机械性能和耐水性能,而WA/氨基树脂涂层需在氨基树脂用量为40%、固化温度为160℃(30 min)时,其固化涂膜的物理机械性能和耐水性能才能达到相同的水平.
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