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采用两种无机填料Si3N4和Al(OH)3复合填充环氧树脂制备了环氧模塑料(EMCs),研究了两种填料用量及单独添加和复合添加对环氧模塑料导热性能和阻燃性能的影响。研究结果表明,单独添加Si3N4或Al(OH)3对环氧模塑料导热性能和阻燃性能的影响规律基本一致,即随着填料含量的增加,环氧模塑料的导热性能和阻燃性能均有不同程度的提高;复合添加Si3N4和Al(OH)3对环氧模塑料的导热性能和阻燃性能均起到积极作用,但是随着填料中Si3N4与Al(OH)3体积比的变化,材料导热性能与阻燃性能会产生交叉耦合作用。当填料中Si3N4与Al(OH)3体积比为3∶2,总体积分数为60%时,环氧模塑料的导热率可以达到2.15W/(m.K),氧指数为53.5%,垂直燃烧达到UL-94V-0级。
Epoxy molding compounds (EMCs) were prepared by epoxy resin filled with two kinds of inorganic fillers, Si3N4 and Al (OH) 3. The effects of two kinds of fillers and additions and additions on the thermal conductivity and flame retardancy Impact. The results show that the addition of Si3N4 or Al (OH) 3 on the thermal conductivity of epoxy molding materials and flame retardant performance of the law are basically consistent, that is, as the filler content increases, the thermal conductivity of epoxy molding materials and flame retardant properties are (OH) 3 composite materials have played a positive role in the thermal conductivity and flame retardant properties of epoxy molding materials, but with the change of the volume ratio of Si3N4 and Al (OH) 3 in the filler, Material thermal conductivity and flame retardant properties will have a cross-coupling effect. When the volume ratio of Si3N4 to Al (OH) 3 in the filler is 3: 2 and the total volume fraction is 60%, the thermal conductivity of the epoxy molding compound can reach 2.15W / (mK) and the oxygen index is 53.5% UL-94V-0 level.