新型环保工艺合成的线型酚醛树脂固化环氧树脂的研究  

Study on Epoxy Resin with Phenolic Novolac Hardeners Synthesized by a Novel Process with Environmental Protection

作　　者：景晨丽[1] 陈立新[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应用化学系,陕西西安710072

出　　处：《材料科学与工程学报》2007年第3期367-371,共5页Journal of Materials Science and Engineering

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

摘　　要：本文采用一种新型环保工艺合成了线型酚醛树脂(简称SPN)。13C NMR方法对其与常规方法生产的线型酚醛树脂(简称CPN)的微观化学结构分析表明:SPN中o-o、o-p、p-p三种结构的含量分别为19.42%、46.21%和22.32%;CPN中这三种结构含量分别为15.87%、56.01%和22.68%;另外,SPN中还含有少量羟甲基苯酚和含醚键的羟甲基苯酚的二聚体等小分子结构,而CPN中不含这样的结构。分别以这两种线型酚醛树脂作为环氧树脂DYD-127的固化剂,比较了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,SPN体系的反应活性略高于CPN体系,而两体系固化产物的力学性能和耐热性没有明显差异。Phenolic novolac was synthesized through a novel technique with environmental protection （a shortened form as SPN）. The chemical structures of SPN and phenolic novolac produced by the conventional method （a shortened form as CPN）： were characterized by ^13C NMR. The results show that the contents of o-o,o-p and p-p structures in SPN were 19.42%, 46.21% and 22.32%, respectively. Whereas in CPN they were 15.87%, 56.01% and 22.68%, respectively. In addition, hydroxy-methyl phenol and dimmer of hydroxy- methyl phenol were explored in SPN. The curing characteristics and properties of epoxy resin DYD-127 with SPN and CPN hardeners were studied. The results show that the reactivity of SPN system was more active than that of CPN system due to the difference of microstructure, but there were little differences in heat resistance, flexible and impact strength of cured resin.

关 键 词：线型酚醛树脂 环氧树脂DYD-127 ^13 C NMR 固化特性 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]