摘要
利用双马来酰亚胺的预聚体(BMI)对氰酸酯树脂(CE)进行改性。通过傅立叶红外光谱(FT-IR)跟踪研究了CE/BMI体系的固化反应,探讨了反应机理,并研究了CE/BMI体系固化后的力学性能及热性能。结果表明:CE/BMI体系主要存在CE、BMI间的共聚反应以及各自的自聚反应;BMI对CE有增韧增强的作用,当BMI与CE质量比为33%时,CE/BMI体系的韧性及强度最好,并且该体系具有优异的耐热性,其热分解温度在410℃以上。
Cyanate resin （CE） modified by prepolymer of bismaleimide （BMI） with different contents were prepared. The reaction between CE and BMI were studied with FT-IR. The reactive mechanism of CE/BMI was discussed and the reactive equations were given. Meanwhile, the mechanical properties and thermal properties of the CE/BMI system with the different content of BMI were investigated. The result shows that the CE/BMI systems have good impact strength and flexural strength due to co-reaction between CE and BMI, self-polymerization of cyanate resin, self-polymerization of bismaleimide occured. When the content of BMI is 33. 3%, the impact strength and flexural strength of the CE/BMI system is 153.7 MPa and 18. 6 kJ/m^2, respectively. Also the CE/BMI systems have good thermal property and the temperature of thermal de- composition is above 410 ℃.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2007年第4期222-225,共4页
Polymer Materials Science & Engineering
基金
陕西省自然科学基金项目(5310119)
西北工业大学研究生创业种子基金项目(Z200665)
关键词
氰酸酯
双马来酰亚胺
改性
耐热性
反应机理
cyanate resin
bismaleimide
modify
thermal property
reactive mechanism
