摘要
采用氧化石墨烯(GO)增强、维生素E (VE)混入超高分子量聚乙烯(UHMWPE)基底材料,通过模压成型工艺制备GO/VE/UHMWPE复合材料,在真空环境下进行γ射线辐照处理,并将部分样品置于模拟体液(SBF)中浸泡6个月。采用差示扫描量热仪(DSC)分析浸泡前后样品的热学性能;利用摩擦试验机(MFT-5000)研究试样力学性能的变化。研究结果表明,辐照交联和GO填充均显著提高试样的结晶度,球压痕硬度和划痕系数;长期浸泡会提高试样的表面结晶度; VE混入和GO填充降低SBF对UHMWPE的氧化降解速率。
In this paper, graphene oxide （GO） and vitamin-E （VE） were blended with ultra-high molecular weight polyethylene （UHMWPE） substrate materials, GO/VE/UHMWPE composites were prepared by compression molding, followed by γ ray irradiation was performed in vacuum environment. Some samples were soaked in simulated body fluid （SBF） for 6 months. Differential scanning calorimetry （DSC） was used to analyze the thermal properties of the samples before and after soaking. The friction and wear machine （MFT-5000） was used to study the changes in the mechanical properties of the specimens. The results show that both irradiation cross-linking and GO-filling improve the crystallinity, ball indentation hardness and scratching coefficient of the sample significantly; crystallinity of the sample; VE mixing and GO filling reduce by SBF. long-term immersion will increase the surface the rate of oxidative degradation of UHMWPE
作者
陆佩佩
倪自丰
陈国美
钱善华
LU Pei-pei1, NI Zi-feng1, CHEN Guo-mei2, QIAN Shan-hua1(1. School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China; 2. Department of Mechanical＆Electronical Technology, Wuxi VOcational Institute of Commerce, Wuxi 214153, China)
出处
《塑料工业》
CAS
CSCD
北大核心
2018年第10期119-122,共4页
China Plastics Industry
基金
国家自然科学基金(51305166
51775244)
江苏省自然科学基金(BK20130143)
关键词
氧化降解
模拟体液
超高分子量聚乙烯
氧化石墨烯
Oxidative Degradation
Simulated Body Fluid
Ultra-high Molecular Weight Polyethylene
Graphene Oxide
作者简介
倪自丰，男，副教授，从事摩擦学及表面工程方面的研究。nizf@jiangnan．edu．cn
