电动汽车用室温硫化低密度导热阻燃有机硅灌封胶的研制  

Preparation of Low Density Thermal Conductivity RTV Silicone Encapsulant for Electric Vehicle

作　　者：邹磊磊 邓冬云 ZOU Le -Hei;DENG Dong-Yun(Zhejiang Transit Fluorine Silicon Material Co., Ltd,Quzhou 324000, Zhejian)

机构地区：[1]浙江中天氟硅材料有限公司,浙江衢州324000

出　　处：《有机硅材料》2017年第6期447-450,共4页Silicone Material

摘　　要：以端乙烯基硅油为基础聚合物,含氢硅油为交联剂、复配Al2O3为导热填料、氢氧化铝为阻燃填料、1-乙炔基环己醇为抑制剂,添加自制低密度填料、铂催化剂等,制得低密度导热阻燃有机硅灌封胶。研究了低密度填料对灌封胶黏度、密度及导热性能的影响。较佳配方为:乙烯基硅油100份、含氢硅油15份、复配Al2O3150份(粒径1μm、5μm、20μm的Al2O3按质量比6∶8∶1复配)、Al(OH)330份、自制低密度填料20份、铂催化剂(0.5~1.0)×10^(-6)、1-乙炔基环己醇0.005份。由此配方制得的灌封胶密度小、黏度低、流动性好、热导率达0.4~0.8 W/(m·K)、阻燃等级为UL 94-V0级,可满足电动汽车电池的灌封要求。The silicone encapsulant with low density, high thermal conductivity and good flame retardance were prepared with vinyl silicone oil as the base polymer, hydrogen containing silicone oil as the crosslinking agent, alumina particle as the thermal conductive filler, aluminum hydroxide as flame retardant filler, 1 - ethy- nylcyclohexanol as the inhibitor, and self-made low density filler and platinum catalyst. The influence of self-made low-density filler on the viscosity and density of the silicone encapsulant was investigated. Results showed that the optimum formulation was as follows： 100 phr of vinyl silicone oil, 15 phr of hydrogen contai-ning silicone oil, 150 phr of alumina filler （ diameter ratio = 1 μ m： 5 μm L20 μ m, mass ratio = 6：8： 1） , 30 phr of aluminum hydroxide, 20 phr of low density filler, （0郾5 ？1.0）伊 10 6phrofplatinumcatalyst, and0. 005 phrof 1- ethynylcyclohexanol. The prepared silicone encapsulant showed the excellent properties including low density and viscosity, excellent fluidity, good thermal conductivity of 0.4 - 0.8 w/（m ·k ）, and flame retardant grade of Class UL94-V0, which meets the potting specification of the electric car battery

关 键 词：有机硅 灌封 低密度 导热 阻燃 室温硫化 

分 类 号：TQ433.438[化学工程]