RTM用6421 BMI树脂性能对时间的依赖性研究  

STUDY ON DEPENDENCE OF PERFORMANCE OF RTM 6421 BISMALEIMIDE RESIN ON STORAGE LIFE

作　　者：李艳亮[1] 唐邦铭[1] 益小苏[1] 

机构地区：[1]北京航空材料研究院先进复合材料国防重点实验室,北京100095

出　　处：《工程塑料应用》2008年第10期66-68,共3页Engineering Plastics Application

摘　　要：主要研究了树脂传递模塑成型(RTM)用6421双马来酰亚胺(BMI)树脂在室温和低温两种不同储存条件下长期储存后的性能对时间的依赖性。用红外光谱仪检测了6421 BMI树脂体系化学状态对时间的依赖性;用差示扫描量热仪检测了6421 BMI树脂体系反应活性对时间的依赖性;用流变仪检测了6421 BMI树脂体系粘度对时间的依赖性。结果表明,储存条件对RTM用6421 BMI树脂的性能影响不大;该BMI树脂在室温和低温储存6个月后,主体化学状态未发生大的改变,其反应活性降低,但该树脂在注射温度(110℃)下至少仍有6h的适用期。The dependence of performance of RTM 6421 bismaleimide resin （BMI） on storage life at room temperature and low temperature was studied. FTIR was used to detect the chemical stability in different storage condition. DSC was used to characterize the dependence of reactivity on storage life. The dependence of viscosity on storage life was tested by rheometer. The results showed that there was little effect of storage condition on the chemical peroperty of 6421 BMI either at room temperature or low temperature. But the reactivity of BMI resin declined after 6 months. There were 6 hours serviceble life after 6 months storage at least.

关 键 词：树脂传递模塑成型 双马来酰亚胺树脂 性能 储存时间 依赖性 

分 类 号：TQ32[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]