Bismaleimide modified by allyl novolak for superabrasives

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Bismaleimide modified by allyl novolak for superabrasives

ZHENGHongfei^a,b;LIZhihong^a; ZHUYumei^a

^a Key Laboratory of Advanced Ceramics and Machining Technology, Tianjin University, Tianjin 300072, China
^b The 41th Institute of No.6 Academy of China Aerospace Science & Technology Corporation, Hohhot 010010, China

Received:1900-01-01 Revised:1900-01-01 Online:2007-04-28 Published:2007-04-28
Contact: ZHENG Hongfei

超硬材料磨具用烯丙基化酚醛改性双马来酰亚胺树脂的研究

郑红飞^a,b; 李志宏^a; 朱玉梅^a

^a Key Laboratory of Advanced Ceramics and Machining Technology, Tianjin University, Tianjin 300072, China
^b The 41th Institute of No.6 Academy of China Aerospace Science & Technology Corporation, Hohhot 010010, China

通讯作者: 郑红飞

Abstract

Abstract: 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.

Key words: allyl novolak, bismaleimide, superabrasive

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 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

ZHENGHongfei,LIZhihong, ZHUYumei. Bismaleimide modified by allyl novolak for superabrasives[J]. .

郑红飞, 李志宏, 朱玉梅. 超硬材料磨具用烯丙基化酚醛改性双马来酰亚胺树脂的研究[J]. CIESC Journal.

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