溶液插层法膨胀石墨/硅橡胶复合材料的热性能研究  

Thermal properties of EG/VMQ composites prepared by solution intercalation

作　　者：牟秋红[1] 张方志[1] 琚伟[1] 李金辉[1] 

机构地区：[1]山东省科学院新材料研究所,山东济南250014

出　　处：《弹性体》2011年第3期6-9,30,共5页China Elastomerics

基　　金：山东省自然科学基金项目(2009ZRB02340)

摘　　要：利用溶液插层法制备了膨胀石墨/硅橡胶(EG/VMQ)导热复合材料,对比普通熔融共混法研究了EG/VMQ的热稳定性。将碳纤维(CF)、SiC、BN、Al2O3等作为第三组分加入到EG/VMQ体系中,考察了第三组分对复合材料热稳定性和热空气老化性能的影响。结果表明,溶液插层法(最大质量损失速率对应温度Tmax为555.8℃)在改善EG/VMQ复合材料热稳定性方面优于普通熔融共混法(Tmax为527℃);第三组分CF在提高溶液插层法EG/VMQ复合材料的热稳定性(Tmax为561℃)和热空气老化性能方面均优于其它填料。Solution intercalation was used to prepare the EG/VMQ thermally conductive compo-sites.In contrast with the conventional compo-sites prepared by melt mixing,the thermal stability of the composites was studied.The third component（such as CF,SiC,BN and Al2O3 et al.） was added into solution intercalation prepared EG/VMQ systems to study the thermal stability and hot air aging performance.It was found that solution intercalation prepared VMQ/EG（Tmax,555.8 ℃） showed higer thermal stability than melt mixing method（Tmax,527 ℃）.And CF furtherly improved the thermal stability（Tmax,561 ℃） and hot air aging performance of solution intercalation prepared VMQ/EG composites.

关 键 词：硅橡胶 热导率 膨胀石墨 碳纤维 热空气老化 

分 类 号：TQ333.96[化学工程—橡胶工业] TQ330.38