【摘要】：利用硅烷偶聯(lián)劑KH-570改性納米遠(yuǎn)紅外陶瓷粉,然后利用球磨混合、熱壓成型工藝制備納米遠(yuǎn)紅外陶瓷粉/超高摩爾質(zhì)量聚乙烯(UHMWPE)復(fù)合材料。研究了改性納米遠(yuǎn)紅外陶瓷粉對UHMWPE結(jié)晶度、力學(xué)性能、摩擦學(xué)性能的影響。結(jié)果表明,改性納米遠(yuǎn)紅外陶瓷粉提高了復(fù)合材料的結(jié)晶度;隨著納米遠(yuǎn)紅外陶瓷粉填充量的增大,拉伸強(qiáng)度和屈服強(qiáng)度先增強(qiáng)后減弱,當(dāng)納米遠(yuǎn)紅外陶瓷粉填充質(zhì)量分?jǐn)?shù)為3%時(shí),其拉伸強(qiáng)度和屈服強(qiáng)度均提高10%以上;納米遠(yuǎn)紅外陶瓷粉填充有效地改善了UHMWPE的摩擦學(xué)性能,當(dāng)填充質(zhì)量分?jǐn)?shù)為4%時(shí),磨損率最低,相比純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.
【作者單位】： 江南大學(xué)機(jī)械工程學(xué)院;
【基金】：國家自然科學(xué)基金(51305166) 江蘇省自然科學(xué)基金(BK20130143)
【分類號】：TQ325.12;TB332

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