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.
出处
《塑料工业》
CAS
CSCD
北大核心
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)
关键词
液晶环氧树脂
熔点
固化
动力学
相行为
Liquid Crystal Epoxy Resin （LCER）
Melting Point
Curing
Kinetics
Phase Behavior
