石油化工2025，Vol.54Issue(7)：965-971,7.DOI:10.3969/j.issn.1000-8144.2025.07.009
TiO2纳米粒子对超高分子量聚乙烯耐磨性能影响
Effect of TiO2 nanoparticles on wear resistance of ultra-high molecular weight polyethylene
摘要
Abstract
The modified TiO2(m-TiO2)nanoparticles were dispersed into the ultra-high molecular weight polyethylene(UHMWPE)solution,and UHMWPE/TiO2 nanocomposites with both high fluidity and wear resistance were subsequently fabricated via the rapid precipitation method.The effects of m-TiO2 nanoparticles on the wear resistance of UHMWPE were systematically investigated using TEM,SEM,DSC,DMA,and a reciprocating friction tester.The experimental results indicate that the mechanism by which m-TiO2 nanoparticles influence the wear resistance of UHMWPE includes two aspects,the inherent rigidity of nanoparticles and the indirect entanglement modulation.When the content of m-TiO2 nanoparticles is 0.1%,0.5%(w),UHMWPE/TiO2 nanocomposites display optimal wear resistance.Specifically,at the content of 0.1%(w),the friction coefficient and wear rate of samples are 0.085 5 and 1.37×10-4 mm3/(N·m),respectively,and the entanglement degree is reduced by approximately 20%.The addition of m-TiO2 nanoparticles can promote the crystallization of UHMWPE,increase the crystallinity,and accelerate the crystallization rate.The dispersion of m-TiO2 nanoparticles with appropriate size and content can simultaneously boost the fluidity and wear resistance of UHMWPE.关键词
超高分子量聚乙烯/TiO2纳米粒子/纳米复合材料/耐磨性/流动性Key words
ultra-high molecular weight polyethylene/TiO2 nanoparticle/nanocomposite/wear resistance/fluidity分类
化学化工引用本文复制引用
隋洋,魏鹏,杨芝超,丛川波,孟晓宇,周琼..TiO2纳米粒子对超高分子量聚乙烯耐磨性能影响[J].石油化工,2025,54(7):965-971,7.基金项目
国家重点研究发展计划项目(2022YFC2803702). （2022YFC2803702）
