申请人:Kaneka Corporation
公开号:EP3305519A1
公开(公告)日:2018-04-11
The present invention provides a metal resin composite including a thermally conductive resin composition and a surface-treated metal which are integrally molded by injection molding to be tightly joined to each other at an interface between the resin and the metal, the metal resin composite excelling in heat radiation property and moldability, being light in weight, and being easily producible. The metal resin composite includes a member made of thermally conductive resin composition and a member made of metal and including a surface on which fine recesses are formed by a surface treatment, these members contacting with each other and being joined to each other in such a manner that the thermally conductive resin composition flows into and is fixed to the recesses by injection molding of the thermally conductive resin composition, wherein: the thermally conductive resin composition contains a thermoplastic resin (A) and an inorganic filler (B); thermal conductivity of the thermally conductive resin composition in a surface direction (In-Plane thermal conductivity) is 1 W/(m·K) or more; and the inorganic filler (B) is at least one selected from the group consisting of inorganic particles (B1) having thermal conductivity of 2 W/(m·K) or more and a volume average particle diameter of 1 to 700 µm and inorganic fibers (B2) having thermal conductivity of 1 W/(m·K) or more, a number average fiber diameter of 1 to 50 µm, and a number average fiber length of 6 mm or less.
本发明提供了一种金属树脂复合材料,包括导热树脂组合物和表面处理过的金属,它们通过注塑成型一体成型,在树脂和金属的界面处彼此紧密连接,该金属树脂复合材料具有优异的热辐射性能和成型性,重量轻,易于生产。金属树脂复合材料包括由导热树脂组合物制成的构件和由金属制成的构件,金属构件的表面通过表面处理形成细小凹槽,这些构件相互接触并相互连接,通过导热树脂组合物的注塑成型,导热树脂组合物流入凹槽并固定在凹槽上,其中:导热树脂组合物包含热塑性树脂 (A) 和无机填料 (B); 导热树脂组合物在表面方向上的导热系数(平面内导热系数)为 1 W/(m-K) 或更高;无机填料 (B) 至少选自以下组别:导热系数为 2 W/(m-K) 或以上、体积平均颗粒直径为 1 至 700 µm 的无机颗粒 (B1) 和导热系数为 1 W/(m-K) 或以上、平均纤维直径为 1 至 50 µm、平均纤维长度为 6 mm 或以下的无机纤维 (B2)。