34results about How to "Good high temperature oxidation stability" patented technology

The invention discloses an automobile heavy load bearing lubricating grease and its preparation method. The lubricating grease comprises the following raw materials by weight percentage: 220CST viscosity naphthenic base oil, fatty acid, dibasic acid, a polyisobutylene adhesion agent, a high polymer polyisobutylene oil solution, an aminothioester antiwear agent, and a lubricating grease composite agent. The lubricating grease has excellent anti-wear and extreme pressure properties, and ensures an optimal loading ability; it can reduce friction very effectively, and control the generated heat to the minimum; it has excellent high temperature oxidation stability, and can guarantee the long term normal work of lubricating parts at high temperature; it can provide comprehensive protection to bearings, thus greatly prolonging the bearing life; and the lubricating grease also has an excellent lubricating effect on metal surfaces.

The invention relates to the field of engine oil and particularly discloses synthesized petrol engine oil and a preparation method thereof. The synthesized petrol engine oil is prepared by the following ingredients by weight percent: 5.31-9.5% of a compound additive bag, 5.0-9.0% of a viscosity index modifier, 75-85% of oil soluble polyalkylene glycol, and the balance of base oil. The synthesized petrol engine oil and the preparation method thereof have the benefits that the ingredients are reasonable, high-temperature oxidation stability, thermal stability, cleaning performance and dispersibility are highlighted to achieve the balance and the unification of the whole performance; the synthesized petrol engine oil is suitable for places required to use oil which is not lower than an API (American Petroleum Institute) SL quality level, can be used for modern high-performance petrol engines and can meet the use requirements of advanced automobiles adopting the novel technologies that turbo charging and direct fuel injection are achieved and catalytic converters are assembled; the synthesized petrol engine oil has excellent low-temperature flowing property and high-temperature oxidation stability, the wear of engine parts and the generation of harmful deposits can be comprehensively inhibited, and the oil exchange period is prolonged.

The invention discloses a coal slurry oil fuel engine oil composition, which adopts polyinternal olefin and oil-soluble polyether as base oil, and cooperates with various composite additives, which include anti-wear agent, anti-oxidation and anti-corrosion agent, anti-foaming agent, viscosity Index improver, metal deactivator, friction modifier, rust inhibitor, detergent, dispersant, oily agent, antioxidant, antiwear agent. The engine oil composition of the present invention has excellent cleaning and dispersing effects, prevents piston rings from sticking and keeps the engine clean; excellent viscosity-temperature characteristics, excellent alkali number retention, oil viscosity growth ability, and can inhibit the formation of black sludge , make the engine cleaner; good high-temperature oxidation stability, high shear stability, rubber compatibility, good low-temperature startability, excellent fuel economy, no corrosion and rust on moving parts, and ensure sufficient oil quality Oil film strength reduces wear and evaporation losses.

The invention discloses a biomass pyrolysis liquid fuel engine oil composition. Oil soluble polyether and castor-based sebacic acid polyethylene glycol ester are adopted as base oil, and multiple compound additives are compounded. Multiple compound additives include an antirust agent, an antioxidant preservative, an antifoaming agent, a viscosity index improver, a metal passivator, a clearing agent, a dispersing agent, an antioxidant and a reinforcing agent. The biomass pyrolysis liquid fuel engine oil composition has good clearing and dispersing effects, viscosity-temperature characteristic, base number retainability and acid neutralization capacity, can inhibit generation of polar materials such as oil sludge, can be used for reducing generation of sediments in a piston ring and a bearing bush, has good stability of resistance to high temperature oxidation, resistance to corrosion of halogen family compounds, nitrification resistance, wear resistance, shear resistance and antifriction and antiseptic properties and also has good low temperature startability, low ash content, less carbon deposit and no corrosion or rusting on moving parts.

The invention discloses a coal tar diesel engine oil composition. Base oil II and oil-soluble polyether used as base oil are matched with multiple composite additives to obtain the composition. The composite additives comprise an antiwear additive, an antioxidant preservative, an antifoam agent, a viscosity index improver, a metal passivator, a detergent agent, a dispersing agent, an antioxidant, a reinforcing agent and an oily agent. The engine oil composition has excellent cleaning and dispersion effects, and prevents the piston ring from sticking. Due to excellent viscosity-temperature characteristic, excellent alkali number retentivity and excellent heat stability, the engine oil composition can inhibit the black oil sludge from generation, so that the engine is cleaner. Due to favorable high-temperature oxidation stability, high shear stability, favorable rubber compatibility, favorable cold-starting property and excellent fuel economical efficiency, the engine oil composition can not corrode the moving parts, has higher abrasion resistance under the condition of higher soot content, and effectively reduces the abrasion of the workpiece.

The invention discloses grease used specially for a sintering machine in a metallurgical industry and a preparation method thereof. The grease used specially for a sintering machine comprises: by weight, 3 to 6% of octadecylamine, 2 to 5% of aniline, 1 to 3% of ethanediamine, 2 to 3% of diphenylmethane-4,4'-diisocyanate (MDI), 50 to 70% of base oil A, 20 to 30% of base oil B, 0.5 to 1% of an antioxidant A, 2 to 4% of an antioxidant B, 1 to 2% of a rust inhibitor A, 2 to 3% of a rust inhibitor B, 2 to 5% of an extreme-pressure anti-wear agent A, 2 to 4% of an extreme-pressure anti-wear agent B, and 10 to 20% of a tackifier. In preparation, the raw materials are mixed by stirring in a certain order according to different temperatures and then are treated by related processes. The grease used specially for a sintering machine overcomes defects of the existing grease and is suitable for lubrication of bearings at different positions of an elastic slide of a large-scale sintering machine in a metallurgical industry and for lubrication of other high-temperature devices such as a soaking pit furnace, an annealing furnace and a drying furnace.

The invention discloses a coal water slurry blended fuel engine oil composition. Polyinternalolefins and castor-bsae dioctyl sebacate used as base oil are matched with multiple composite additives to obtain the composition. The composite additives comprise an antiwear additive, an antioxidant preservative, an antifoam agent, a demulsifying compound, a viscosity index improver, a metal passivator, a detergent agent, a dispersing agent, an antioxidant, an oily agent, a friction improver, a reinforcing agent and a rust inhibitor. The engine oil composition has excellent cleaning and dispersion effects, prevents the piston ring from sticking, and keeps the engine clean. Due to excellent viscosity-temperature characteristic, excellent alkali number retentivity, acid neutralizing capacity and demulsifying capacity, the engine oil composition can inhibit the black oil sludge from generation, so that the engine is cleaner. Due to favorable high-temperature oxidation stability, high shear stability, favorable rubber compatibility, favorable cold-starting property and excellent fuel economical efficiency, the engine oil composition can not corrode or tarnish the moving parts, ensures the oil product to maintain sufficient oil film strength, has better extreme-pressure abrasion resistance, and lowers the abrasion and engine oil consumption.