加成固化型烯丙基线形酚醛树脂研究

doi:10.19491/j.issn.1001-9278.2015.01.014

中国塑料 ›› 2015, Vol. 29 ›› Issue (01): 75-79 .DOI: 10.19491/j.issn.1001-9278.2015.01.014

加成固化型烯丙基线形酚醛树脂研究

刘乃亮,理莎莎,李美玲,孙杰

西安理工大学理学院应用化学系

收稿日期:2014-09-23 修回日期:2014-12-09 出版日期:2015-01-26 发布日期:2015-01-26

Study on Addition-curable Allylic Novolac Resin

Received:2014-09-23 Revised:2014-12-09 Online:2015-01-26 Published:2015-01-26

摘要/Abstract

摘要： 采用烯丙基氯与线形酚醛树脂（Novolac）反应，制得烯丙基醚化酚醛树脂（AEN），并于高温下使AEN通过Claisen重排转变为烯丙基线形酚醛树脂（AN），使酚醛树脂固化由缩聚型转变为加成型，对树脂的烯丙基醚化程度、固化过程、转变机理和耐热性进行了研究。结果表明，通过调节烯丙基氯用量，可以得到不同烯丙基化程度的酚醛树脂，树脂烯丙基醚化程度越高，固化时间越短；在245 ℃下树脂由醚化的AEN重排为对位的AN，在330~350 ℃范围内发生烯丙基加成固化反应；加成固化型的酚醛树脂内缺陷少，耐热性高于缩聚型树脂。

关键词: 线性酚醛树脂, 烯丙基化, Claisen重排, 加成固化

Abstract: Allyl ether novolac (AEN) was synthesized by allyl chloride and novolac, then the AEN was changed into allylic novolac (AN) by Claisen rearrangement rule at high temperature, that made the curable type from condensation to addition. The allylic degree, curing process, transition mechanism and heat resistance were investigated. It was found that the novolac with high allylic degree, prepared by different allyl chloride consumption, were cured fast than low one. The addition-curable resin was rearranged at 245 ℃ and cured at 330~350 ℃, and the heat resistance was better than condensation-curable resin because of less inter defects.

Key words: Novolac, allylation, Claisen rearrangement, addition cure

刘乃亮, 理莎莎, 李美玲, 孙杰. 加成固化型烯丙基线形酚醛树脂研究[J]. 中国塑料, 2015, 29(01): 75-79 .

加成固化型烯丙基线形酚醛树脂研究

Study on Addition-curable Allylic Novolac Resin

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