纳米远红外陶瓷粉填充UHMWPE复合材料的性能研究

发布时间：2018-12-11 09:30

【摘要】：利用硅烷偶联剂KH-570改性纳米远红外陶瓷粉,然后利用球磨混合、热压成型工艺制备纳米远红外陶瓷粉/超高摩尔质量聚乙烯(UHMWPE)复合材料。研究了改性纳米远红外陶瓷粉对UHMWPE结晶度、力学性能、摩擦学性能的影响。结果表明,改性纳米远红外陶瓷粉提高了复合材料的结晶度;随着纳米远红外陶瓷粉填充量的增大,拉伸强度和屈服强度先增强后减弱,当纳米远红外陶瓷粉填充质量分数为3%时,其拉伸强度和屈服强度均提高10%以上;纳米远红外陶瓷粉填充有效地改善了UHMWPE的摩擦学性能,当填充质量分数为4%时,磨损率最低,相比纯UHMWPE降低了20%。
[Abstract]:Nano-far-infrared ceramic powder was modified by silane coupling agent KH-570. Then nano-far-infrared ceramic powder / ultra-high molar mass polyethylene (UMPE) (UHMWPE) composite was prepared by ball milling and hot pressing process. The effects of modified nano far infrared ceramic powder on crystallinity, mechanical properties and tribological properties of UHMWPE were studied. The results showed that the crystallinity of the composites was improved by the modified nano-far-infrared ceramic powder. With the increase of the content of nano-far-infrared ceramic powder, the tensile strength and yield strength of nano-far-infrared ceramic powder increased firstly and then decreased. When the filling mass fraction of nano-far-infrared ceramic powder was 3, the tensile strength and yield strength of nano-far-infrared ceramic powder increased by more than 10%. Nano-far-infrared ceramic powder filling can effectively improve the tribological properties of UHMWPE. When the filling mass fraction is 4, the wear rate is the lowest and 20% lower than that of pure UHMWPE.
【作者单位】：江南大学机械工程学院;
【基金】：国家自然科学基金(51305166) 江苏省自然科学基金(BK20130143)
【分类号】：TQ325.12;TB332

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