Dielectric Properties of Epoxy/POSS composites

被引：0
|
作者：
Heid, Thomas [1 ,2 ]
Frechette, Michel [1 ]
David, Eric [2 ]
机构：
[1] Inst Rech Hydroquebec IREQ, Varennes, PQ, Canada
[2] ETS, Montreal, PQ, Canada
来源：
2013 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA (CEIDP) | 2013年
关键词：
epoxy; dielectric response; glass transition temperature; interfacial polarization; loss tangent; nanodielectrics; polymer nanocomposites; POSS; silica; thermal ageing; volume resistivity;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work, the dielectric responses of epoxy/POSS composites with different contents of liquid Triglycidylisobutyl-POSS (TGIB-POSS) varying from 1wt% to 10wt% were investigated using Broadband Dielectric Spectroscopy (BDS) at 20 degrees C, before and after exposure to a post heat-treatment of the samples. Besides the known beta-peak in the vicinity of 10(5) Hz, an additional interfacial loss peak for the epoxy/POSS composites with more than 1wt% TGIB-POSS has been observed for low frequencies. Furthermore, loss tangent values of the composites were found to be reduced after incorporation of POSS, along with an increased volume resistivity, especially after thermal ageing. Differential Scanning Calorimetry (DSC) has shown a decrease in glass transition temperatures with increasing TGIB-POSS content.
引用
收藏
页码：751 / 755
页数：5
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