BaTiO_3/环氧树脂/玻璃纤维复合材料介电性能研究  

Study on Dielectric Properties of BaTiO_3/Epoxy/Fiberglass Composite

作　　者：徐任信[1] 崔昌盛 单云刚[1] 鲁学林[1] 王钧[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070 [2]中船重工第七一二研究所,湖北武汉430064

出　　处：《纤维复合材料》2008年第2期25-27,共3页Fiber Composites

基　　金：湖北省自然科学基金(2007ABA028)

摘　　要：本文运用热压工艺制备了BaTiO3(BT)/环氧树脂/玻璃纤维和BaTiO3/炭黑/环氧树脂/玻璃纤维复合材料,研究了温度、填料含量和交流频率对复合材料的介电性能的影响。结果表明,复合材料的介电常数(rε)和介电损耗(tanδ)随BT体积分数的增加而升高。当BT体积分数为17%时,复合材料在1MHz下的rε和tanδ分别为7.88和0.027。当炭黑的含量为1.0%时,BT含量为17%的复合材料rε和tanδ分别为11.0和0.035。随着频率的升高,复合材料的rε降低,而介电损耗升高。复合材料的rε随温度升高而增加。Barium titanate（BT）/epoxy/fiberglass and barium titanate（BT）/carbon black/epoxy/fiberglass composites were prepared by hot-pressing method. The effect of temperature, filler fraction and AC frequency on the dielectric properties of composites was studied in this article. The results show that, the dielectric constant （εr） and dielectric loss （tanδ） increase with the volume fractions of the BT and carbon black. The εr and tans are 7.88 and 0.027, respectively, with the BT volume fraction of 17% in composite at 1MHz. With the presence of 1.0% carbon black,the εr and tans of the composite with 17% BT are 11.0 and 0.035, respectively. The εr diereases with the increasing of the frequency, on the contrary, the tans enhances. The dielectric constants of the two kinds of composites increase with the temperature.

关 键 词：钛酸钡 炭黑 环氧树脂 FRP 介电性能 内藏式电容器 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业] TQ174.758