一种适用于热熔法制备预浸料的阻燃型改性苯并噁嗪树脂的研究

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (2): 67-70.

一种适用于热熔法制备预浸料的阻燃型改性苯并噁嗪树脂的研究

张琪, 敬茂, 冉起超^*, 顾宜^*

四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,成都610065

收稿日期:2015-09-21 出版日期:2016-02-20 发布日期:2016-02-20
通讯作者: 冉起超(1981-),男,副教授,硕士生导师,研究方向为高性能热固性聚合物。
顾宜(1949-),男,教授,博士生导师,研究方向为耐热聚合物。
作者简介:张琪(1991-),男,硕士,主要从事树脂共混改性研究。
基金资助:
四川大学优秀青年学者基金(2013SCU04A27)

STUDY ON A MODIFIED BENZOXAZINE RESIN WITH GOOD FLAMERETARDANCY FOR HOT-MELT IMPREGNATION

ZHANG Qi, JING Mao, RAN Qi-chao^*, GU Yi^*

State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering,Sichuan University, Chengdu 610065, China

Received:2015-09-21 Online:2016-02-20 Published:2016-02-20

摘要/Abstract

摘要： 基于苯并噁嗪和三官能环氧树脂的共混体系,制备了可用于热熔法制备预浸料的阻燃型基体树脂。考察了树脂体系的软化点、粘性,并对其固化物的阻燃性能、耐热性能及弯曲性能进行了测试。结果表明,通过配方调整,该树脂体系粘性满足热熔法的成型要求,其固化物阻燃性能达到UL-94 V-1,极限氧指数为33,玻璃化转变温度为212℃,弯曲强度达131MPa。通过加入催化剂间苯二酚调节体系的粘度变化,当间苯二酚含量为2wt%时,体系满足预浸料制备复合材料时对粘度变化的要求。该适用于热熔法制备预浸料的阻燃型改性苯并噁嗪树脂可用于航空航天领域。

关键词: 热熔法, 苯并噁嗪, 阻燃, 耐热性

Abstract: The flame retardant matrixes used for hot melt impregnation were prepared by the blends of benzoxazine and trifunctional epoxy resin. Softening point and adhesion at room temperature of these resin systems were tested. Flame retardancy, Tg and flexural property of cured resins were studied. Results suggest that by adjusting the ratio, the adhesion of the system met the requirement of hot melt technique, and flame retardancy of the cured resins reached UL-94 V-1 grade. Furthermore, limited oxygen index value reached 33, and a glass transition temperature of 212℃ was shown. The flexural strength was as high as 131 MPa. Additionally, the change of the viscosity during curing was adjusted by adding resorcinol as a catalyst. When the addition amount of resorcinol was 2 wt%, the viscosity can meet the requirement during preparation of the composite material. So, a flame retardant benzoxazine resin used for hot melt impregnation was successfully prepared, and it can be used in the aerospace field.

Key words: hot-melt method, benzoxazine, flame retardancy, heat resistance

中图分类号:

张琪, 敬茂, 冉起超, 顾宜. 一种适用于热熔法制备预浸料的阻燃型改性苯并噁嗪树脂的研究[J]. 玻璃钢/复合材料, 2016, 0(2): 67-70.

ZHANG Qi, JING Mao, RAN Qi-chao, GU Yi. STUDY ON A MODIFIED BENZOXAZINE RESIN WITH GOOD FLAMERETARDANCY FOR HOT-MELT IMPREGNATION[J]. Fiber Reinforced Plastics/Composites, 2016, 0(2): 67-70.

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