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环氧树脂低温快速固化剂的合成及性能研究

Engineering Plastics Application(2011)

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Abstract
以苯酚、多聚甲醛、二乙烯三胺、硫脲为单体,以DMP–30为促进剂,合成了环氧树脂低温快速固化剂。分析了反应温度、反应时间以及各材料用量对环氧树脂固化剂性能的影响,并进一步考察了固化剂与环氧树脂最佳用量比。在(110±2)℃下反应2.5 h,苯酚、多聚甲醛、二乙烯三胺、硫脲之比为1∶1.25∶1.3∶1.1,且DMP–30促进剂加入量为5%,以30%的用量与环氧树脂混合均匀后,在–5℃时20 min即可快速固化。
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Key words
curing agent synthesis,performance,dosage,fast curing
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