摘要
用不同用量硅烷偶联剂处理纳米Al2O3粉体,并借助超声波以一定方式将其均匀分散于聚酰胺酸溶液中,制备出不同偶联剂用量的PI/纳米Al2O3杂化薄膜,并对该杂化薄膜的断面形貌、聚集态结构、热稳定性、力学性能、电击穿场强进行表征测试分析。结果表明,偶联剂用量对PI杂化薄膜的聚集态结构影响较小,但对无机纳米粒子在PI基体中的分散状态有较大影响,当偶联剂AE3012的用量为无机粒子质量分数的4%时,该PI杂化薄膜的热稳定性、力学性能、电击穿场强均最高。
The nano Al2O3 powder was uniformly dispersed in poly（amic acid）solution under the ultrasonic, which was treated by different silicon coupling agent dosage, then the Polyimide/nano Al2O3 hybrid films with different dosage of coupling agent were prepared. We studied the fractured morphology, aggregate structure, thermal stability, mechanical property and electric breakdown strength of hybrid films. The result revealed that the amount of coupling agent has little effect on aggregate structure of hybrid films, but the has bigger effect on the dispersion of inorganic nano-particles in PI matrix, the hybrid films shows the highest thermal stability, mechanical property and electric breakdown strength when the content of coupling agent was 4% of that of inorganic particle.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2008年第5期814-816,820,共4页
Journal of Functional Materials
基金
国家自然科学基金重点资助项目(50137010)
黑龙江省自然科学基金资助项目(200607)
