中文摘要：

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（球一盘接触方式）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一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％．

英文摘要：

Water soluble Cu nanoparticles are synthesized by in situ surface modification with NH2 -functionalized magnesium silicate hydroxide and characterized. The morphology of as prepared Cu nanopartieles is observed on a transmission electron microscope. The conductivity coefficient of the aqueous solution of Cu nanoparticles is measured with a thermal conductivity coefficient surveying instrument. An Optimol SRV IV （ball- on- block） oscillating friction and wear tester and is performed to evaluate the tribological properties of Cu nanopartieles in water. Results indicate that as - prepared Cu nanoparticles have good friction - reducing and anti - wear properties for steel - steel frictional pair. In the meantime, as - prepared Cu nanoparticles can reduce the conductivity coefficient of pure water by nearly 10%, which is beneficial for as - prepared Cu nanoparticles to function as a kind of water - based lubricating additives.