Bismaleimide Modified by Allyl Novolak for Superabrasives  

作　　者：郑红飞 李志宏 朱玉梅 

机构地区：[1]Key Laboratory of Advanced Ceramics and Machining Technology, Tianjin University

出　　处：《Chinese Journal of Chemical Engineering》2007年第2期302-304,共3页中国化学工程学报（英文版）

摘　　要：A novel thermosetting resin system for superabrasives based on novolak and bismaleimide （BMI） was developed. The novolak resin was allylated and then copolymerized with BMI. The structure of allyl novolak and reaction mechanism were analyzed by FFIR. Thermal and mechanical properties were characterized by using com- prehensive thermal analyzer （DSC-TG） and strength tester, respectively. The results showed that high molecular weight of novolak was advantageous for heat-resistance, but was unfavorable for the bending strength. High allyl content improved the heat-resistance but lowered the bending strength. When the molecular weight of novolak was 450 and allyl content was 50%, the best resin system with good heat-resistance and bending strength was obtained. It was suitable for the manufacturing of superabrasive tools.A novel thermosetting resin system for superabrasives based on novolak and bismaleimide(BMI)was developed.The novolak resin was allylated and then copolymerized with BMI.The structure of allyl novolak and reaction mechanism were analyzed by FTIR.Thermal and mechanical properties were characterized by using com-prehensive thermal analyzer(DSC-TG)and strength tester,respectively.The results showed that high molecular weight of novolak was advantageous for heat-resistance,but was unfavorable for the bending strength.High allyl content improved the heat-resistance but lowered the bending strength.When the molecular weight of novolak was 450 and allyl content was 50%,the best resin system with good heat-resistance and bending strength was obtained.It was suitable for the manufacturing of superabrasive tools.

关 键 词：allyl novolak BISMALEIMIDE superabrasive 

分 类 号：O621.2[理学—有机化学]