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Synthesis of Unsaturated Acrylate Copolymers for UV Curing Powder Coatings
Author(s): 
Pages: 38-40,45
Year: Issue:  7
Journal: PAINT & COATINGS INDUSTRY

Keyword:  丙烯酸酯共聚反应紫外光固化不饱和树脂粉末涂料;
Abstract: 以AIBN作引发剂、巯基乙酸作链转移剂、甲基丙烯酸缩水甘油酯作封端剂、苄基氯化三乙胺作催化剂,合成了紫外光固化粉末涂料用的不饱和丙烯酸酯共聚物(即光敏聚合物).探讨了投料单体组成对光敏聚合物玻璃化温度的影响,考察了封端反应条件对光敏聚合物分子有效率的影响.对合成的预聚物及光敏聚合物进行了UV、FT-IR、DSC测试表征.研究表明:要制得有效率高的光敏聚合物分子,适宜的反应条件为:甲基丙烯酸缩水甘油酯与预聚物物质的量之比1.5~2.0,反应温度为138℃,反应时间为9~12 h,催化剂的用量选择在1.0%~1.5%(以GMA与预聚物总物质的量计).
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