PPS基导热绝缘复合材料的制备及性能  

Preparation and Properties of Thermally Conductive and Insulating PPS Composites

作　　者：程亚非[1,2] 杨文彬[1,2] 魏霞[1,2] 徐超星[1,2] 范敬辉[3] 张凯[3] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010 [2]西南科技大学材料科学与工程学院,四川绵阳621010 [3]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《西南科技大学学报》2013年第2期1-4,共4页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金委员会-中国工程物理研究院联合基金资助项目(11176025);四川省非金属复合与功能材料重点实验室省部共建国家重点实验室培育基地开放基金项目(11zxfk01)

摘　　要：采用注塑成型制得PPS/gf/Al2O3导热绝缘复合材料,其中聚苯硫醚(PPS)为基体,玻璃纤维(gf)为补强纤维,氧化铝为导热填料。用扫描电子显微镜(SEM)、导热分析仪、超高电阻微电流测试仪和电子万能实验机对复合材料的微观结构、导热性能、绝缘性能和拉伸强度进行了表征。结果表明:氧化铝颗粒和玻纤均匀分散在PPS基体中;复合材料热导率随着氧化铝含量的增加而增大,最大可达0.798 W/(m·K);表面电阻率和体积电阻率随氧化铝含量增加而略有下降,最小值分别为0.19×1015Ω和0.57×1014Ω·m;拉伸强度先增后减,最大值和最小值分别为196 MPa,165 MPa。Thermally conductive and dectrical insulating PPS/gf/Al2O3 composites were prepared by injection molding.Polyphenylene sulfide （PPS）,glass fiber and alumina particles were chosen as polymeric matrix,reinforcing fiber and thermally conductive filler,respectively.Microstructure,thermal conductive property,electrical insulating property and tensile strength of the composites were characterized by scanning electron microscopy （SEM）,thermal conductivity analysis instrument,high resistance micro-current tester and electronic universal testing machine.The result indicates that the alumina particles and glass fibers are dispersed homogeneously in PPS matrix.With the increasing of the alumina content,the thermal conductivity of the composites raised and the maximum value was 0.798 W/ （m · K）.The surface and volume electrical resistivity declined slightly and the minimum values were 0.19 × 1015 Ω and 0.57 × 1014 Ω · m,respectively.Tensile strength of the composites increased initially and then decreased,the maximum and minimum values were 196 MPa and 165 MPa,respectively.

关 键 词：聚苯硫醚 氧化铝 导热性能 电绝缘性能 拉伸强度 

分 类 号：TQ326.55[化学工程—合成树脂塑料工业]