新型工艺合成的线型苯酚甲醛型环氧树脂的研究  

Diglycidyl ether of phenolic novolac produced by novel technology

作　　者：陈立新[1] 景晨丽[1] 王知伟[1] 陈伟伟[1] 宋家乐[1] 

机构地区：[1]西北工业大学理学院,西安710072

出　　处：《材料科学与工艺》2009年第4期544-546,550,共4页Materials Science and Technology

基　　金：无锡市科委产学研招标合作项目(DY050008);西北工业大学研究生创业种子基金(Z200668)

摘　　要：为了提高固化后普通双酚A型环氧树脂的耐热性,采用新型环保工艺合成的线型酚醛树脂(简称SPN)经环氧化制备了线型苯酚甲醛型环氧树脂(简称EPN).比较了甲基四氢邻苯二甲酸酐(MeTHPA)分别固化EPN和普通线型苯酚甲醛型环氧树脂F-51两个体系的固化特性和浇铸体性能.结果表明,由于微观化学结构的差异,EPN体系和F-51体系的反应表观活化能分别为51.4kJ/mol和67.7kJ/mol,即EPN体系的反应活性略高于F-51体系,两体系固化产物的力学性能没有明显差异,EPN体系和F-51体系的玻璃化转变温度分别为415.65K和408.45K,即EPN体系的耐热性略低于F-51体系.Diglycidyl ether of epoxy phenolic novolac （EPN） resin was synthesized by reaction of epichlorohydrin and phenolic novolac which was produced by a novel technology in order to enhance the heat resistance of cured common Bisphenol A epoxy resin. The curing characteristics and properties of EPN and F - 51 （ a commercial product for diglycidyl ether of phenolic novolac produced by conventional method） with Methyl - 1,2,3,6- tetrahydrophthalic anhydride （MeTHPA） hardeners were studied. Results show that the activation energies of EPN system and F -51 system are 51.4 k J/tool and 67.7 kJ/mol, respectively. It is indicated that the reactivity of EPN system is more active than that of F-51 system due to the difference of microstructure. There is little difference in flexible and impact strength of cured resin. The T g of EPN system and F - 51 system are 415.65 K and 408.45 K, respectively. It is concluded that the heat resistance of EPN system is a little lower than that of F -51 system.

关 键 词：酚醛型环氧树脂 线型酚醛树脂 固化特性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]