Title: SYNTHESIS AND CURING OF A NOVEL LIQUID CRYSTALLINE EPOXY RESIN
Abstract: A novel liquid crystalline epoxy resin containing biphenyl and aromatic ester-type structure 4-(2,3-epoxypropoxy)biphenyl,4''-(2,3-epoxypropoxy)phenyl-4'carboxylate(EBEPC) was synthesized.The structure and phase behavior of the synthesized product were characterized by means of IR,1H NMR,DSC and POM.The result showed that a clear single axis homeotropic nematic droplet texture was obtained.The liquid crystalline epoxy resin was cured with a curing agent diaminodiphenylmethane(DDM).The results displayed that EBEPC/DDM system had a lower curing reaction temperature than the ordinary epoxy resin E-51 system which was also cured by DDM,and the apparent activation energy(Ea) of liquid crystalline epoxy resin system(54.5kJ/mol) was lower than E-51 system(60.7kJ/mol).It indicated that the EBEPC system had higher reaction activity than the E-51 system.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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