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材料工程  2015 

磁性MH/Fe3O4/SR复合材料的耐热机理及摩擦性能

DOI: 10.11868/j.issn.1001-4381.2015.10.012, PP. 73-78

Keywords: MH/Fe3O4/SR复合材料,物理力学性能,摩擦,耐热

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Abstract:

以SR、纳米Fe3O4和纳米MH为主要原料制备MH/Fe3O4/SR磁性橡胶复合材料。研究纳米Fe3O4和纳米MH不同配比时,复合材料的物理力学性能变化、耐热以及摩擦性能变化。结果表明纳米粒子在SR基体中分布较为均匀,不同配比的Fe3O4/MH能够有效改善硅橡胶的物理力学性能。当配比20phrMH/10phrFe3O4时,复合材料的拉伸强度、伸长率有所改善,性能较普通硅橡胶提高了5%左右。随着纳米MH与Fe3O4填料填充量不断加大,复合材料耐热性能不断提高,摩擦因数有效降低。当纳米添加量为30phrMH/10phrFe3O4时,复合材料的分解温度提高为450℃,当纳米添加量为20phrMH/20phrFe3O4时,复合材料的摩擦因数降为0.52。

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