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材料工程  2006 

混杂填料填充导热硅橡胶性能研究

, PP. 15-19

Keywords: 硅橡胶,氮化硅,碳化硅晶须,热导率,热膨胀系数

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Abstract:

以甲基乙烯基硅橡胶为基胶,选用不同粒径氮化硅粒子和碳化硅晶须为填料制备了导热硅橡胶。研究表明大小粒子以最佳比例进行混合填充时橡胶可获较高热导率,并采用Hasselman模型和等效粒径概念来研究混合粒子体系的热导率;将碳化硅晶须和氮化硅粒子并用,在较低用量下体系呈现较高热导率。此外,随混合填料用量增加橡胶热膨胀系数降低,热稳定性提高。

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