改性氰酸酯类耐高温胶粘剂的研究  

Study on modified cyanate ester adhesive with heat-resistance

作　　者：吴广磊[1] 寇开昌[1] 卓龙海[1] 王益群[1] 晁敏[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710129

出　　处：《中国胶粘剂》2012年第7期12-15,共4页China Adhesives

基　　金：西北工业大学研究生创业种子基金项目(Z2012153)

摘　　要：以双马来酰亚胺(BMI)、双酚A型氰酸酯(BADCy)和苯并噁嗪(BOZ)树脂为基体树脂,纳米二氧化硅(nano-SiO2)为填料,制备耐高温胶粘剂。采用非等温差示扫描量热(DSC)法、Kissinger法和Ozawa法研究了nano-SiO2/BOZ/BMI/BADCy共聚物的固化动力学过程。结果表明:当m(BOZ)∶m(BMI)∶m(BADCy)=1∶1∶2、w(nano-SiO2)=3%时,相应BOZ/BMI/BADCy胶粘剂的表观活化能(47.82 kJ/mol)低于无nano-SiO2体系(59.17 kJ/mol),并具有良好的耐高温性能;在250℃时用该胶粘剂胶接硅钢片,胶接件经250℃老化1 000 h后,其剪切强度仍保持稳定。With bismaleimide（BMI）,bisphenol A type cyanate ester（BADCy） and benzoxazine（BOZ） resin as matrix resin,nano-SiO 2 as filler,an adhesive with heat-resistance was prepared.The curing kinetics process of nano-SiO 2 /BOZ/BMI/BADCy copolymer was investigated by non-isothermal DSC（differential scanning calorimetry）,Kissinger method and Ozawa method.The results showed that the apparent activation energy（47.82 kJ/mol） of corresponding BOZ/BMI/BADCy with nano-SiO 2 adhesive was less than that without nano-SiO 2 adhesive（59.17 kJ/mol）,the BOZ/BMI/BADCy with nano-SiO 2 adhesive had good heat-resistance when mass ratio of m（BOZ）∶m（BMI）∶ m（BADCy） was 1∶1∶2,mass fraction of nano-SiO 2 was 3%.The bonded samples between the BOZ/BMI/BADCy with nano-SiO 2 adhesive and silicon steel sheet,had still stable shear strength after aging 1 000 h at 250 ℃.

关 键 词：氰酸酯 苯并噁嗪 双马来酰亚胺 纳米二氧化硅 固化动力学 耐高温胶粘剂 

分 类 号：TQ433.43[化学工程]