纳米SiO_2对环氧树脂复合泡沫塑料绝缘性能和力学性能的影响  

Effects of SiO_2 Nanofiller on Insulation and Mechanical Properties of Epoxy Resin based Syntactic Foam

作　　者：吕程[1,2] 

机构地区：[1]重庆水利电力职业技术学院,重庆402160 [2]输配电装备及系统安全与新技术国家重点实验室重庆大学,重庆400044

出　　处：《塑料》2015年第4期46-49,共4页Plastics

摘　　要：在环氧树脂复合泡沫塑料中加入纳米SiO2,测试了纳米SiO2改性后复合泡沫塑料的击穿性能和50Hz时的介电性能,结果表明:纳米SiO2对复合泡沫塑料交直流下的击穿性能影响不大,复合泡沫塑料的介电常数、介质损耗角正切值都随纳米SiO2的增加而增加;纳米SiO2改性后复合泡沫塑料的拉伸强度和断裂伸长率随纳米SiO2含量的增加而减小,弹性模量随纳米SiO2含量的增加而增加。SiO2 nanofillers were mixed to the liquid, uncured epoxy resin during the manufacturing process before the hollow microspheres were added. Breakdown and dielectric properties at 50 Hz of epoxy resin based syntactic foam were tested. The results showed that nano-SiO2 had little effect on the breakdown performance of epoxy resin based syntactic foam under AC and DC. Dielectric constant and dielectric loss tangent of the composite foam were increased with the increasing of nano-SiO2 content. Tensile strength and elongation at break were decreased with the increase of nano-SiO2 content. E-modulus was increased with the increasing of the content of nano-SiO2.

关 键 词：纳米SIO2 环氧树脂 绝缘 击穿 弹性模量 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]