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炭黑的表面修饰及其对炭黑/硅橡胶导热性能的影响

Keywords: 硅橡胶,导热,炭黑,表面修饰,界面热阻

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Abstract:

通过采用羟基硅油对炭黑表面修饰,改善炭黑与硅橡胶之间的相容性,从而减小炭黑与硅橡胶界面热阻,制备了高导热系数炭黑填充硅橡胶,研究了炭黑填料与硅橡胶的相容性及炭黑/硅橡胶的导热系数。结果表明:与原炭黑/硅橡胶体系相比,经过羟基硅油修饰的炭黑与硅橡胶的相容性得到明显改善。当经表面修饰炭黑的质量分数为36.59%时,表面修饰炭黑/硅橡胶的导热系数可达到0.591W·(m·K)-1,较同含量未修饰炭黑/硅橡胶的导热系数高38.7%。

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