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采用化学结构改性的方法,以萘酚和福尔马林溶液为原料,合成了分子骨架中相对于苯基体积较大、刚性强、平面结构、疏水性高的萘环为主链结构环氧树脂-2,2’-二缩水甘油醚基-1,1’-联萘(DGEBN)和邻邻’-二缩水甘油醚基-二萘基-亚甲基(DGEFN);然后分别以双氰双胺(DICY)、4,4’-二氨基-二苯基甲烷(DDM)、4,4’-二氨基-二苯基砜(DDS)作为固化剂,对DGEBN、DGEFN、DGEBA固化体系性质进行研究;研究结果表明,萘基环氧树脂固化物比苯基环氧树脂(DGEBA)固化物具有更高的玻璃化转变温度(Tg),极好的热稳定性和较低的吸湿性,是一种高性能的新型环氧树脂体系。
Using naphthalene and formalin as raw materials, the naphthalene ring with larger volume, stronger rigidity, higher planarity and higher hydrophobicity than the phenyl group was synthesized by chemical structural modification 2,2’-diglycidyl ether-1,1’-binaphthyl (DGEBN) and ortho-diglycidyl ether-dinaphthyl-methylene (DGEFN) (DICY), 4,4’-diamino-diphenylmethane (DDM) and 4,4’-diamino-diphenyl sulfone (DDS) The results show that the naphthalene epoxy cured resin has higher glass transition temperature (Tg), better thermal stability and lower hygroscopicity than the phenyl epoxy resin (DGEBA) cured product , Is a new type of high performance epoxy resin system.