硅树脂/二氧化硅高温相变及介电性能研究  

Study on high-temperature transformation and dielectric properties of silicon resin/silicon dioxide composite

作　　者：曹茂盛[1] 张亮[1] 李金刚[1] 侯志灵[1] 王富耻[1] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081

出　　处：《材料科学与工艺》2006年第4期420-423,共4页Materials Science and Technology

基　　金：国家重点基础研究发展规化资助项目(973-5131803);国防科工委十一五基础科研资助课题资助项目(No.A2220061080);国防预研基金资助项目(No.5141240205BQ0154)

摘　　要：采用氧乙炔喷枪对含有少量有机硅树脂的二氧化硅素坯进行单面烧蚀处理,利用XRD、SEM和SAED表征其高温物相变化.研究发现,高温烧蚀后的二氧化硅中有少量α-方石英析出,并伴有α-S iC、β-S iC新相生成,在此基础上研究了物态变化对材料高温介电性能的影响.Silicon dioxide based composite with a few silicon resin was ablated quickly by oxyacetylene spraying gun, and was characterized by x-ray diffraction, electron microscope and selective area electron diffraction. It was found that there are a few α-cristobalite crystallization and α-silicon carbide, β-silicon carbide formation. Based on experiments above, the relationship between physical and chemical states transformation of materials and high-temperature dielectric properties was studied.

关 键 词：有机硅树脂 二氧化硅 物相变化 介电性能 表征 

分 类 号：TB332[一般工业技术—材料科学与工程]