| 纳米Si3N4及其混杂填料改性PTFE的性能研究 |
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| 引用本文： | 顾红艳;史丽萍;何春霞. 纳米Si3N4及其混杂填料改性PTFE的性能研究[J]. 中国塑料, 2009, 23(10): 31-35. DOI: 10.19491/j.issn.1001-9278.2009.10.008 |
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| 作者姓名： | 顾红艳 史丽萍 何春霞 |
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| 作者单位： | 南京农业大学南京农业大学南京农业大学 |
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| 摘 要： | 采用模压成型的方法制备了纳米氮化硅(Si3N4)与二硫化钼(MoS2)、玻璃纤维(GF)、纳米三氧化二铝(Al2O3)混合填充的聚四氟乙烯(PTFE)复合材料，研究了PTFE复合材料的力学性能和摩擦学性能。采用扫描电子显微镜(SEM)观察分析了拉伸断面形貌及增强机理。结果表明：Si3N4及其混杂填料均使复合材料表面硬度增大；PTFE/Si3N4/Al2O3纳米复合材料具有较好的拉伸性能；混杂填料均可以显著改善PTFE复合材料的耐磨性能，其中5 %的Si3N4与10 %的Al2O3混杂填充复合材料的耐磨性最好，填料对复合材料摩擦因数影响不大。SEM分析表明，纳米Si3N4、Al2O3与PTFE基体界面结合较好。
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| 关 键 词： | 纳米氮化硅 协同效应 聚四氟乙烯 力学性能 摩擦学性能 |
| 收稿时间： | 2009-06-30 |
Properties of PTFE Modified with Nano-Si3N4 and Its Hybrid Fillers |
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| GU Hong-yanSHI Li-pingHE Chun-xia. Properties of PTFE Modified with Nano-Si3N4 and Its Hybrid Fillers[J]. China Plastics, 2009, 23(10): 31-35. DOI: 10.19491/j.issn.1001-9278.2009.10.008 |
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| Authors: | GU Hong-yanSHI Li-pingHE Chun-xia |
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| Abstract: | The composites of polytetrafluoroethylene (PTFE) filled with nano-Si3N4, MoS2, GF, and nano-Al2O3 were prepared by compression molding. The mechanical, friction, and wear properties of the composites were studied. The tensile fracture surface was observed by a scanning electron microscope (SEM) and the reinforcement mechanism was explored. The inclusion of the inorganic fillers increased the surface hardness, tensile strength, and wear resistance, with the optimal loadings of 5 % Si3N4 and 10% Al2O3. However, the fillers had little effect on the friction coefficient. The SEM showed that Si3N4 and Al2O3 have a better combination with the PTFE matrix. |
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| Keywords: | nano silicon nitride synergistic effect polytetrafluoroethylene mechanical property tribological property |
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