环氧树脂表面金属离子注入改性层的摩擦学性能研究

以 3种剂量 (2× 10 1 5 ions/cm2 、1× 10 1 6 ions/cm2 及 1× 10 1 7ions/cm2 )分别对环氧树脂进行 Al、Ti和 Fe离子注入处理 ,采用 MM- 2 0 0型摩擦磨损试验机考察了注入改性层的摩擦学性能 ,采用傅立叶变换红外光谱仪分析离子注入前后环氧树脂表面基团及其键合方式 .结果表明 :3种金属离子注入处理后环氧树脂的耐磨性均显著提高 ,摩擦系数降低 ;其中 Al离子注入处理的摩擦学改性效果最好 ;对应于环氧树脂最小磨损体积损失的不同金属离子的注入剂量亦不同 .红外光谱分析结果表明 :经 Al离子注入后 ,环氧树脂表面保持微量的吸附水 ;同时其表面发生了脱氢及氧化等作用 ,形成了新的化学基团 ,且其立体网状交联程度提高 ,这使得离子注入处理后环氧树脂的减摩耐磨性能得以明显改善 .

Tribological Properties of Ion-implanted Epoxy Resin

The samples of epoxy resin were implanted with Al, Ti and Fe ionsat doses of 2×1015 ion/cm2, 1016 ion/cm2 and 1017 ion/cm2, respectively. The friction and wear behavior of the ion implanted epoxy resin block in dry sliding against SAE52100 steel ring was examined with an MM-200 friction and wear tester. The chemical features of the surfaces of the epoxy resin samples before and after ion implantation were investigated by means of Fourier transmission infrared spectroscopy. As the results, the wear-resistance and friction-reduction behavior of epoxy resin is considerably increased by ion implantation of the metallic ions. Especially, the lowest wear rates were obtained at doses of 2×1015 ion/cm2, 1016 ion/cm2 and 1017 ion/cm2, for Al, Fe, and Ti ion implantation, respectively. This is attributed to the inclusion of small amount of water on the surface, the chemical changes including de-hydrogenation and oxidation accompanied by generation of new radicals on the surface, and the enhanced net-work linking of the molecules after ion implantation of the epoxy resin.