| 高铝微珠/环氧树脂复合材料冲蚀磨损特性 |
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| 作者姓名： | 陈平 马峰 梅华锋 赵海林 佘建民 |
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| 作者单位： | 1. 北京科技大学机械工程学院, 北京 100083; |
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| 摘 要： | 采用从高铝粉煤灰中提取的空心微珠为填料制备了高铝微珠/环氧树脂复合材料，并研究了复合材料的冲击强度及其冲蚀磨损特性.从冲蚀磨损机理、耐磨性能以及冲击性能方面分析，确定聚酰胺650是环氧树脂比较理想的固化剂.硅烷偶联剂改善了空心微珠与环氧树脂基体的相容性，有效地提高了环氧树脂的耐冲蚀磨损性能.当空心微珠的加入量较少时，复合材料的冲击强度及耐冲蚀磨损性能并没有得到明显改善；当空心微珠质量分数达到3%时，复合材料的冲击强度达到最大值，耐冲蚀磨损性能也有明显的提高，而在空心微珠质量分数为4%时复合材料的耐冲蚀磨损性能最佳，从而最终确定高铝粉煤灰空心微珠合适的填充量为3%～4%.
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| 关 键 词： | 复合材料 微珠 环氧树脂 冲蚀 磨损 冲击强度 |
| 收稿时间： | 2013-09-21 |
Erosive wear characteristics of high-alumina cenospheres filled epoxy resin composites |
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| Affiliation: | 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. School of Mechanical Electronic and Information Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China;3. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Epoxy resin composites filled with high-alumina fly ash cenospheres were prepared in this paper. Their impact strength and erosive wear behaviors were investigated by impact test and erosive wear test. Polyamide 650 was determined as an ideal curing agent to epoxy resin according to the erosion wear mechanism, wear resistance and impact performance. Silane coupling agent improves the compatibility of the cenospheres and the epoxy resin matrix, which effectively increases the erosion resistance of the composites. When the mass fraction of the cenospheres is less than 3%, the impact strength and the erosion resistance of the composites does not change obviously. When the mass fraction of the cenospheres is 3%, the impact strength reaches maximum and the erosion resistance also increases obviously. And when the mass fraction of the cenospheres is 4%, the erosion resistance is the best. As a result, the appropriate mass fraction of high-alumina cenospheres was determined ultimately to be 3% to 4%. |
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