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以氨基功能化羟基硅酸镁为修饰剂,采用原位表面修饰方法制备了水溶性Cu纳米微粒.利用透射电子显微镜观察了水溶性Cu纳米微粒的形貌,利用导热系数测定仪测定了水溶性纳米Cu分散液的导热系数,并通过SRV往复摩擦磨损试验机(球-盘接触方式)考察了水溶性Cu纳米微粒作为水基添加剂的摩擦学性能.结果表明:水溶性纳米Cu微粒作为水基添加剂能够显著减小钢-钢摩擦副的摩擦系数和磨损率,提高纯水的承载能力;在合适的浓度下,水溶性纳米Cu微粒可使纯水导热系数提高近10%.
Water-soluble Cu nanoparticles were prepared by in situ surface modification using amino-functionalized magnesium hydroxy silicate as modifier.The morphology of water-soluble Cu nanoparticles was observed by transmission electron microscopy and the water solubility The thermal conductivity of nano-Cu dispersions was investigated and the tribological properties of water-soluble Cu nanoparticles as water-based additives were investigated by SRV reciprocating friction and wear testing machine (ball-disk contact method). The results show that water- Additive can significantly reduce the friction coefficient and wear rate of steel-steel friction pairs, and improve the carrying capacity of pure water. At proper concentration, water-soluble nano-Cu particles can increase the thermal conductivity of pure water by nearly 10%.