摘要
Abstract
Insulated high thermal conductivity silicon rubber was prepared by using polydimethylsiloxane,hydrogen silicone oil and c-BN.The influence of different content of c-BN on thermal conductivity,insulation performance and physical properties of silicone rubber was studied.The results showed that the thermal conductivity of the silicone rubber system could be greatly improved by filling the modified c-BN,the thermal conductivity was 7.16 W/(m·k)and thermal resistance was 3.39 cm2K/W when c-BN was used for 80％.c-BN could reduce the insulation performance and mechanics elasticity of silicone rubber system,but when no more than 80％,breakdown strength was greater than 6 kV/mm,volume resistivity was greater than 1×1012Ω·cm,hardness was less than 55,compression set was less than 30％,could meet the actual use of insulation requirements,meet the requirements of product installation and use,not easy to be crushed,fracturing and have some flexibility.关键词
绝缘高导热硅橡胶/立方氮化硼/导热系数/绝缘性能Key words
insulated high thermal conductivity silicon rubber/c-BN/thermal conductivity/insulation performance分类
化学化工
