耐磨损滑石填充PTFE复合材料的制备及性能研究

发布时间：2018-05-08 05:51

本文选题：聚四氟乙烯 + 复合材料　；参考：《塑料工业》2017年02期

【摘要】：以滑石粉为填料制备滑石粉/聚四氟乙烯(PTFE)复合材料,研究了滑石粉用量对复合材料密度、硬度、摩擦磨损及热力学性能影响。结果表明,当滑石粉质量分数从0%增加到20%时,复合材料的硬度、密度逐渐增加;滑石粉能显著增加复合材料耐磨性能。当滑石粉质量分数为20%时,复合材料磨耗量仅相当于纯PTFE的1/2 000(磨损条件为200 N,2 h,200 r/min);复合材料的结晶度随滑石粉填充量的增加先下降后升高,当滑石粉质量分数为20%时,复合材料的结晶度为三者中最高,比纯PTFE提高了17%。
[Abstract]:Talc / PTFE composites were prepared with talc powder as filler. The effects of talc content on density, hardness, friction and wear and thermodynamic properties of the composites were studied. The results showed that when the mass fraction of talc powder increased from 0% to 20%, the hardness and density of the composites increased gradually, and the wear resistance of the composites increased significantly. When the mass fraction of talc powder is 20, the wear capacity of the composite is only 1 / 2 000 of that of pure PTFE (the wear condition is 200NU 2 h ~ 2 h ~ 200 r / min). The crystallinity of the composite decreases firstly and then increases with the increase of talc content, and when the mass fraction of talc powder is 20%, the crystallinity of the composite decreases first and then increases with the increase of the talc content. The crystallinity of the composite is the highest of the three, which is 17% higher than that of pure PTFE.
【作者单位】：浙江大学浙江加州国际纳米技术研究院;
【基金】：浙江省教育厅项目(Y201328296) 国际合作项目(2011DFR50150)
【分类号】：TQ325.4;TB332

【相似文献】