Performance Study And Preparation Of Antiwear Additive For Lubracation Oil

The lubricant is widely used on the development of the national economy, especially in the machine industry. To use lubricant correctly is a basic measure to guarantee and improve the machine equipment used efficiently and longer. All of this makes lubricant important. It is called figuratively the blood that maintains the machine running normally. With the development of the technology, the condition in which the machine works becomes rigorer and the demands to the lubricant become more, which makes the common oil can not meet with the demands. Using additive can solve above questions. Most lubricants conclude organic and inorganic additive compound to improve its capability and carry out its lubricant by the physical and chemical adsorption and chemical reaction. With the development of the nanometer science technology in 90's of the 20th, nano-tribology as one of its branch has also developed quickly and the research on tribology performance of various organic and inorganic compound nanoparticle have been paid more and more attention. The research on the nanoparticle which is the lubricate additive is becoming more and more. All the researches indicate that nanometer materials has a favorable foreground of research and application.This thesis have first prepared nanometer copper powder. The copper powder was charactered by XRD, TEM. The result shows the copper powder is elementary copper, the particle size is 20~40nm and the distribution of particle size is uniform. A protection film was formed on surface of wear trace when add nanometer additive into synthetic 20 lubricating oil. The lubricant possess good performance of tribology and wear resistance.Nanoparticle have tremendous surface energy as particle size is miniaturization. The nanoparticle will form congeries as tendency of conglomeration during particles. Nanoparticle will lose it's performance when it deposit in lubricate. Many foreign companies engaged studies and appeared patents for resolving stability, but nanoparticles still occur precipitation in lubricate. We prepared CuDDP for solving the problem. The organic copper salt can disperse well in organic solvent. According to report, the copper salt can release copper and other materials in lubricate process. These materials resist abrasion together and repair scratching andconcave of friction pair, so the frictional surface keep planarizing all the time.We analyzed various additive effect on tribology performance of lubricant by comparing wear resistance of nanometer copper powder and CuDDP. In this paper nanometer cooper was prepared by liquid reduce method, then it was modified by organic material. We analyzed tribology performance of lubricant and compared the effect on improvement of tribology performance by adding nanoparticle prepared into synthetic 20 lubricating oil. We confirmed the best route and parameter of technology to preparing lubricant by orthogonal test and optimizing the best proportion of lubricant. Experimental steel bearing and fixed bearing produced friction by running of central bearing on friction and wear tester. We measured length of wear trace by rule and analyzed surface performance of steel bearing by SEM. At last we estimated tribology performance of lubricant according length of wear trace and surface performance of steel bearing.The additive is a new lubricant additive base on theory of nanometer technology and nanometer tribology. It own performance of antifriction, antiwear, energy conservation and environmental. The lubricant additive can decrease obviously starting current of engine and increase obviously cylinder pressure. A protective film was formed on cylinder liner and piston by adding the additive into lubricant. Once the lubricating system was spoiled, the surface film formed by nanoparticles still have performance of adhesion, oil bearing, repair. Friction surface still have lubricating performance, so cars can still run safely a long time. It have very important meaning in military affairs. At present, study about cars can still run safely a l...