含润滑油微胶囊复合镀铜机理和镀层性能

采用水相分离法制备了以润滑油为囊心、聚乙烯醇为囊壁的微胶囊，并考察了含这种微胶囊复合镀铜层的性能.通过对这种复合镀层微观形貌的观察及耐腐蚀性、耐磨性、动摩擦系数的测定，结果表明由于复合镀铜层中含有润滑油微胶囊，其耐腐蚀性和耐磨性能都得到很大提高，并分析了这种微胶囊复合电沉积的机理和镀层的润滑、修复作用.

The Codeposition Mechanism and Function of Oil-containing Microcapsule Composite Copper Coating

Function of the composite copper coating containing lubricating oil microcapsules was discussed with codeposition mechanism. The oil-containing microcapsules were prepared by a method of simple coacervation in aqueous solution. Lubricating oil and PVA (polyvinyl alcohol) were used as the core and wall materials of microcapsules, respectively. The surface micrograph of the composite copper coating containing oil microcapsules was observed by scan electron microscope. The surface composition was analyzed by dot-scan and line-scan of energy dispersion spectrum. Corrosion resistance of the composite copper coating was evaluated by anodic polarization curve obtained in 0.5 mol?L－1 H2SO4 solution. Wear-resistance of the composite copper was evaluated by the curves of weight lost and sliding friction coefficient during abrasion. Results showed that the microcapsules were contained in the copper coating. The composite copper coating containing the lubricating oil microcapsule had much better corrosion resistance and wear-resistance than the copper coating without microcapsule. In addition, the electrocodeposition mechanism could be explained by a two-step adsorption and an electrochemistry mechanism, which had been used for solid particulate codeposition. The lubricative and repairing function of the oil-containing microcapsule composite copper coating had also been discussed in the paper.