申请人:Sekisui Chemical Co., Ltd.
公开号:EP3213912A1
公开(公告)日:2017-09-06
The present invention provides a carbon-coated thermal conductive material which can improve water resistance, oxidation resistance, and dispersibility at the time of being kneaded with a resin while maintaining excellent thermal conductive performance. The present invention is a carbon-coated thermal conductive material having a coating layer composed of amorphous carbon on the surface of a thermal conductive material, in which the thermal conductive material is composed of a metal oxide, a metal nitride, a metal material, or a carbon-based material having a thermal conductivity of 10 W/mK or greater; the amorphous carbon is derived from carbon contained in an oxazine resin; in a case where the amorphous carbon is analyzed by Raman spectroscopy, a ratio of a peak intensity of a G band to a peak intensity of a D band is 1.0 or greater; an average film thickness of the coating layer is 500 nm or less; and a coefficient of variation (CV value) of a film thickness of the coating layer is 15% or less.
本发明提供了一种碳涂层导热材料,该材料在与树脂捏合时可提高耐水性、抗氧化性和分散性,同时保持良好的导热性能。本发明是一种碳涂层导热材料,在导热材料表面有一层由无定形碳组成的涂层,其中导热材料由金属氧化物、金属氮化物、金属材料或导热系数大于等于 10 W/mK 的碳基材料组成;无定形碳来自恶嗪树脂中所含的碳;在用拉曼光谱分析无定形碳的情况下,G 波段的峰值强度与 D 波段的峰值强度之比为 1.0 或更大;涂层的平均膜厚为 500 nm 或更小;涂层膜厚的变异系数(CV 值)为 15%或更小。