| With the machine-building industry development and the use of new engine as well as to enhance people's awareness of environment protection, people's requirements on the oil quality are increased. With the natural oil production process improvement can improve its quality , but that does not produce lubricant which are in line with all kinds of performance requirement. In order to improve the quality of lubricating oil and give some of its new performance , you can add to the lubricating oil additives. Compared with common materials, nano-material has many unique properties and new laws.Such as : quantum size, small size effect and many other conventional materials do not have the special property. With a wide range of applications, at present, nanoparticles as lubricant additives cause a lot of research workers'interest. How to improve the nano-particles'stability and compatibility in the lubricant, research in this field has become a hot and difficult.In this paper, two methods used to prepare nano-copper borate lubricant additive. One is based on borax and copper sulfate as the main raw material, stearic acid as a surface modification agent, through the synthesis-modification of a step response preparation. At 70℃, adding amount of 5%stearic acid. reacting 6h under the condition, prepared in the 100-200nm in diameter out, thickness is 15-20nm hydrophobic nano-film. Another similarly to borax and copper sulfate as raw material. At40℃,V(raw) :V(trition-100): V(n-hexyl alcohol):V(cyclohexane) = 1:5:4:8.5,reaction 3h,got a diameter of about 30nm nanosphere.The two methods of copper borate system as lubricant additives carry out friction experiments, the friction coefficient of lubricant adding copper borate obtained by surface modification,compared with additive-free base oil decrease 60%;the friction coefficient of lubricant adding copper borate obtained by micro-emulsion, compared with additive-free base oil decrease 20%。...
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