氰酸酯树脂及其碳纤维复合材料研究  

Study on Carbon Fiber Reinforced Cyanate Resin Composite

作　　者：任鹏刚[1] 梁国正[1] 王结良[1] 杨洁颖[1] 吕生华[1] 

机构地区：[1]西北工业大学理学院化工系,陕西西安710072

出　　处：《中国塑料》2004年第5期38-42,共5页China Plastics

基　　金：西北工业大学研究生创业种子基金资助项目 (Z2 0 0 3 0 0 99);陕西省教育厅专项科研基金 (0 3JK0 80 )

摘　　要：E5 1环氧树脂改性双酚A型氰酸酯树脂 (BADCy)体系的力学和热性能的研究表明 ,5 % (质量分数 ,下同 )的E5 1环氧树脂可使BADCy的弯曲强度和冲击强度分别由原来的 95 .6MPa和 9.2 4kJ/m2 提高到 117.8MPa和12 .5 8kJ/m2 ,热变形温度仅下降 8℃。碳纤维 /BADCy复合材料的扫描电镜和力学性能测试结果表明 ,纤维的表面形态对界面粘结效果有较大影响 ,三种复合材料界面的粘结强弱顺序是T3 0 0 /BADCy >M 40 /BADCy >M 40J/BAD Cy。水煮 10 0h对三种碳纤维复合材料的弯曲性能影响不大 ,但对层间剪切强度的影响明显 ,其中M 40J/BADCy的层间剪切强度保持率只有 84.2 % ,而T3 0 0 /BADCy的强度保持率高达 92 .5 %。热冲击和紫外线辐照实验研究表明 ,-3 0℃ / 11h～ 15 0℃ / 11h的 2 0次热交变及总剂量为 1× 10 9J/m2 的紫外线照射对BADCy基碳纤维复合材料的力学性能影响很小 ,三种复合材料的弯曲强度、弯曲模量和层间剪切强度的保持率均大于 90 %。Bisphenol-A dicyanate(BADCy) was modified with epoxy resin (E51).When 5wt% of E51 was introduced,the flexural and impact strengths of commercial BADCy were increased from 95.6 MPa and 9.24 kJ/m2 to 117.8 MPa and 12.6 kJ/m2,respectively,at a cost of decrease in the heat deformation temperature of only 8 ℃.The adhesion efficiency between BADCy and three types of carbon fiber was evaluated with SEM and the following order was given:T300/BADCy>M40/BADCy>M40J/BADCy.The inter-laminar shear strength (ILSS) of the three systems were 101.8 MPa, 69.8 MPa,and 70.3 MPa,respectively.Soaking in boiling water decreased ILSS of the composites.After soaking for 100 h,the remained ILSS for M40J/BADCy and T300/BADCy were 84.2 % and 92.5 %,respectively.Switching between -30 ℃/11 h and 150 ℃/11 h for 20 cycles and exposure to UV radiation at a dose of 1×109 J/m2 affected the mechanical properties moderately,with the flexible and shear strengths being decreased below 10 %.

关 键 词：双酚A型氰酸酯 碳纤维复合材料 空间环境 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]