7501氰酸酯树脂及其复合材料性能  

Properties of 7501 Cyanate Ester Resin and Its Composites

作　　者：张朋[1] 张斌[2] 钟翔屿[1] 包建文[1] 刘刚[1] 

机构地区：[1]中航工业复合材料技术中心,北京航空材料研究院,先进复合材料重点实验室,北京100095 [2]国家国防科技工业局协作配套中心,北京100081

出　　处：《宇航材料工艺》2013年第6期38-40,共3页Aerospace Materials & Technology

摘　　要：研究了7501氰酸酯树脂的工艺和耐热性能,以EW220布为增强材料,采用RTM成型工艺制备了EW220/7501复合材料层板,研究了其室温和高温力学性能。结果表明:7501氰酸酯树脂的最低黏度为87mPa·s,开放期大于10 h,300℃固化后,热分解温度为431℃,T g可达421℃;EW220/7501复合材料室温下具有良好的力学性能,其中拉伸强度为393 MPa,压缩强度为356 MPa,弯曲强度为602 MPa,层间剪切强度为43MPa,在300℃下,各项力学性能保持率均≥80%。The processability and heat-resistant properties of 7501 Cyanate ester were investigated. And the EW220/7501 laminates were then produced through RTM process for evaluation of mechanical properties. The results showed that the lowest melt viscosity of the resin is 87 mPa. s, and the processable time is more than 10 hours. After being cured at 300℃ ,the Tg is 421℃ and the 5% decomposition temperature is 431℃. The mechanical properties of EW220/7501 composites is well at room temperature, the tensile strength is 393 MPa, the compression strength is 356 MPa, the flexural strength is 602 MPa, the interlaminar shear strength is 43 MPa. And the retention rates of mechanical properties at 300℃ is more than 80%.

关 键 词：RTM 氰酸酯树脂 复合材料 工艺性能 耐热性能 力学性能 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]