Photopolymerization of Glycerin Triglycidyl Ether Based Systems

Photopolymerization process of glycerin triglycidyl ether based systems was studied by an FT-IR spectrometer.An increase in the rate of polymerization for glycerin triglycidyl ether was evident when 3,4-epoxycyclohexylmethyl-3＇,4＇-epoxycyclohexanecarboxylate was added to it.Its copolymerization mechanism was confirmed by using DSC analysis.The effect of ethoxylated trimethyol propane triacrylate on the rate of polymerization for glycerin triglycidyl ether was also studied,and the formation of interpenetrating network tightly cross-link was proposed.

光敏预聚物丙三醇三缩水甘油醚三丙烯酸酯的合成

以N,N 二甲基苄胺为催化剂、对羟基苯甲醚为阻聚剂,用丙三醇三缩水甘油醚和丙烯酸为主要原料合成了一种新型光敏预聚物———丙三醇三缩水甘油醚三丙烯酸酯。研究了反应温度,阻聚剂、催化剂用量等因素对反应的影响,优化的合成反应条件是温度90～110℃、N,N 二甲基苄胺的质量分数为0 80%～1 00%、对羟基苯甲醚的质量分数为0 20%～0 40%。把所合成的光敏预聚物加入光引发剂配成了光固化涂料,对其紫外光固化涂料膜进行了拉伸实验,测得其拉伸强度为27 14MPa,弹性模量946 85MPa,断裂伸长率3 72%。

脂肪族三缩水甘油醚改性室温快速固化体系的研究

以丙氧基化多元醇为原料,通过端基转化法合成了脂肪族甘油三缩水甘油醚(PGTE),用FT-IR,GPC对其结构进行了表征,化学分析测得其环氧值为0.43。研究了在室温快速固化的E-51/聚硫醇体系中,PGTE的加入对体系固化速度、粘接性能及固化物热稳定性的影响。结果表明,PGTE对该体系具有良好的降粘和提高粘接强度的作用。当PGTE加入量为30(pbw)时,室温快速固化特性和固化物的耐热性基本不变,铁片粘接的剪切强度与不均匀扯离强度则分别提高了116%和126%。