一种低熔点液晶环氧树脂的合成与固化研究  

Synthesis and Curing of Liquid Crystalline Epoxy Resin with Low Melting Point

作　　者：周博[1] 刘国栋[1] 高俊刚[2] 

机构地区：[1]河北工业大学高分子科学与工程研究所,天津300130 [2]河北大学化学与环境科学学院,河北保定071002

出　　处：《塑料工业》2008年第7期16-19,共4页China Plastics Industry

基　　金：天津市自然科学基金(05YFJMJC05800);河北省自然科学基金(B2005000108)

摘　　要：合成了一种低熔点的芳香酯型液晶环氧树脂双4-环氧丙氧基乙氧基邻甲基对苯二酚酯(MPEPEB),并用IR、EA、1HNMR、DSC和POM对其结构和性能进行了表征,结果表明MPEPEB在78.7～133.9℃之间为向列型液晶,并在降至-50℃后仍能保持液晶态。DSC研究表明,MPEPEB与芳香胺类固化剂4,4′-二氨基二苯甲烷(DDM)在升温固化过程中出现了两个放热峰,等温固化过程中该体系的活化能与固化温度有关,表明液晶相的存在对固化反应有重要影响。A liquid crystalline epoxy resin p-methylphenylene di {4-[ （2,3-epoxypropoxy） ethoxy] benzoate } （MPEPEB）, which had a low melting point, was synthesized, and the structure and phase behavior of the synthesized product were characterized by means of IR, EA, ^1H-NMR, DSC and hot stage POM. The results showed MPEPEB showed a nematic mesophase between 78.7 ℃ and 133.9 ℃, and the mesophase maintained till -50 ℃ in cooling. The curing of MPEPEB/DDM was investigated. There were two exothermic peaks in dynamic DSC curve and two Ea in the isothermal curing which may be correlated with the appearance of mesophase.

关 键 词：液晶环氧树脂 熔点 固化 动力学 相行为 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]