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

A lubricating grease composition used for cylinders of electric tools is provided. The composition comprises base oil, a thickening agent and functional additives, wherein the base oil is one of or a mixture of at least two substances selected from HVI hydrogenated base oil, metallocene PAO, trimethylolpropane trioleate, alkyl silicone oil or methylphenyl silicone oil, the thickening agent is one of or a mixture of at least two substances selected from lithium soap, composite aluminum soap or polyurea, the functional additives are an extreme pressure antiwear agent, an antioxidant or a rubber compatibility modifier or a mixture thereof, the extreme pressure antiwear agent comprises an organic molybdenum salt and a heavy-load diesel engine oil complexing agent, and the rubber compatibility modifier is dimethyl silicone oil or/and alkyl silicone oil. The lubricating grease prepared with the composition is excellent in impact load resistance, free of loss at high temperature, long in service lifetime and low in high-temperature evaporation loss and can be widely used for cylinders of various electric hammers and electric picks.

The invention discloses lubricating grease special for a front furnace roller way bearing of metallurgy industry and a preparation method thereof. The lubricating grease comprises the following raw materials in percentage by weight: 3 to 8 percent of diphenylmethane-4,4'-diisocyanate MDI, 0.5 to 2 percent of octadecylamine, 1 to 5 percent of cyclohexane, 40 to 50 percent of base oil 1, 30 to 45 percent of base oil 2, 0.4 to 0.6 percent of antioxidant, 0.4 to 0.6 percent of anti-rusting agent, 2 to 6 percent of extreme pressure anti-wear additive, 0.5 to 3 percent of adhesive and 1 to 8 percent of filling agent. During preparation, the raw materials are added into an oil tank and a saponification kettle for stirring and mixing at different temperatures and in certain order.

The invention discloses a lubricating grease specially used in a high-temperature kiln car, and a preparation method thereof. The grease comprises the raw materials of, by weight: 40-60 parts of base oil A, 30-50 parts of base oil B, 4-8 parts of octadecylamine, 3-5 parts of ethylene diamine, 3-6 parts of MDI (diphenylmethane-4,4'-diisocyanate), 1-2 parts of an antioxidant A, 2-3 parts of an antioxidant B, 2-3 parts of a rust inhibitor, 1-2 parts of an extreme-pressure anti-wear agent A, 1.5-3 parts of an extreme pressure anti-wear agent B, and 5-10 parts of a tackifier. During preparation, the raw materials are stirred and mixed according to different temperatures and a certain order, and are treated according to a related process requirement. The lubricating grease provided by the invention has good high-temperature resistance, good colloidal stability, good oxidation stability, good water resistance, good pumpability, low coking tendency, and low ash. During application, coking is prevented under high temperature, and cleaning is not needed. The lubricating grease is directly added. The preparation method is simple and easy to operate. Product application effect is good.

The invention discloses an oil composition for emulsified diesel oil engines. According to the oil composition, II-class base oil and polyinternalolefins are used as base oil, and a plurality of additives are matched. The oil composition comprises an antirusting agent, an oxidation-corrosion inhibitor, an anti-foaming agent, a viscosity index improver, a metal deactivator, a clearing agent, a dispersing agent, an antioxidant, a reinforcing agent, an oiliness agent and an anti-creaming agent. The oil composition for the engines has excellent clean dispersion effect, so that sediments of piston rings are reduced; the oil composition has excellent viscosity-temperature characteristics, alkali value retentivity and acid neutralization capacity, and can inhibit the generation of black oil sludge, so that the engines are relatively clean; the oil composition has good high temperature oxidation resistance stability, high shear stability, anti-emulsifying property, rubber compatibility, good low temperature startability, excellent fuel economy performance and has no corrosion and rusting for moving parts, enough oil film strength of oil is guaranteed, and the abrasion and the oil consumption are reduced.

The invention relates to pentaerythritol ester lubricating oil base oil and a preparation method thereof. The base oil is prepared from the following components: polyol and saturated fatty acid with the carbon atom number of C5-C10, wherein the polyol comprise pentaerythritol and dipentaerythritol, and the dipentaerythritol is prepared from tripentaerythritol. According to the invention, the synthesized 5-cst pentaerythritol ester base oil has excellent viscosity-temperature performance, low-temperature fluidity and high-temperature oxidation stability, has the high-temperature oxidation stability superior to that of similar base oil on the market, and has good industrial application prospect.

The invention discloses a compressor oil composition which comprises the following components in percentage by weight: 0.2-0.6 percent of antioxidant, 0.2-0.8 percent of ashless complexing agent A, 0.2-0.8 percent of ashless complexing agent B, 0.01-0.3 percent of ashless antiwear agent, 0-0.1 percent of anti-foaming agent and the balance of basic oil, wherein the basic oil comprises cut narrow fraction hydrogenated mineral oil and cycloparaffin basic oil. According to the compressor oil composition, the two complexing agents are matched and play a synergic enhancement effect, so that the compressor oil composition has comprehensive, balanced and excellent properties, such as oxidation stability, extreme pressure antiwear property, anti-rust property and demulsification property and is not easy to generate greasy filth; and meanwhile, the basic oil has high dissolubility, excellent low-temperature property and other properties, so that the compressor oil composition has excellent high-temperature oxidation stability, cooling property and extreme pressure antiwear property on the whole, and especially has excellent detergency and dispersancy and greasy filth and carbon deposit resistance property.

The invention discloses an improved type compressor oil composition. The improved type compressor oil composition is prepared from the following raw materials in parts by weight: 21-29 parts of phosphite ester, 17-19 parts of fatty sulfurized isobutylene, 5-8 parts of thiadiazole polysulfide, 11-15 parts of borate, 11-15 parts of dialkyl naphthalene-sulfonic-acid metal salt, 9-11 parts of polyether modified organic silicon, 20-30 parts of synthetic ester oil, 23-25 parts of biodegradable lipid oil, 6-8 parts of dialkyl zinc dithiophosphate, 5-8 parts of succinate, 7-10 parts of polyallyl metacylate, 6-8 parts of dialkyl zinc dithiophosphate salt and 5-7 parts of dithiophosphate. The improved type compressor oil composition disclosed by the invention has the advantages that the high-temperature oxidation stability, the cooling property and the extreme-pressure anti-wear property are excellent, the environmental pollution is reduced, high-load resistance, high-temperature resistance and high-pressure resistance are achieved and the cost is low.

The invention relates to pedal motorcycle special-purpose long-life low-noise lubricating oil. The pedal motorcycle special-purpose long-life low-noise lubricating oil at least comprises 5.8%-7.8% of a gasoline-engine oil compound, 0.8% of an antioxidant, 1.1%-1.3% of an anti-wear friction reducer, 3.5%-4.5% of a viscosity index improver and 86.6%-87.8% of mixed base oil. The lubricating oil also comprises a compound anti-foaming agent. The gasoline-engine oil compound comprises an ashless dispersant and a total calcium-based detergent. The anti-wear friction-reducing agent is one or more of molybdenum dialkyldithiocarbamate, a molybdate and a molybdenum-amine complex. The viscosity index improver is ethylene-propylene copolymer liquid sol. Compared with the commercial oil, the lubricating oil needs longer time in consumption of the same amount of oxygen and has good oxidation resistance and abrasion resistance and a long service life. The pedal motorcycle using the lubricating oil has low noise and friction.

The invention provides a high-temperature valve lubricating oil and a processing method thereof. The lubricating oil is prepared from 10 to 15 parts by weight of tricaprylin, 7 to 16 parts by weight of polyisobutene, 7 to 11 parts by weight of polytetrafluoroethylene, 5 to 10 parts by weight of polyisobutylene succinimide, 1 to 3 parts by weight of sodium carboxymethyl cellulose, 3 to 5 parts by weight of acrylic glyceride, 3 to 7 parts by weight of sodium dodecylbenzene sulfonate, 5 to 8 parts by weight of fatty alcohol polyoxyethylene ether carboxylate, 2 to 5 parts by weight of triphenylphosphorothioate, 2 to 7 parts by weight of basic zinc dioctyl primary alkyl dithiophosphate, 4 to 6 parts of para aminobenzoic acid, 6 to 9 parts of octylphenol, 3 to 5 parts of calcium alkyl salicylate and 4 to 8 parts of petroleum ether. All the components are centrifugally stirred to be uniformly mixed according to parts by weight. Under the condition of high temperature, the evaporation loss of the lubricating oil produced by the invention is little, the high-temperature oxidation stability is good, and the influence on sealing media is minimal; high service temperature can reach 360 DEG C or more; and the lubricating property is good.

The invention discloses gear oil for assembly of new energy automobiles, and belongs to the technical field of gear oil. The gear oil comprises, by mass, 88-95% of base oil, 0.4-3.0% of antioxidants,0.4-1.8% of rust inhibitors, 2-4.2% of anti-wear agents, 0.001-0.05% of antifoaming agent, 0.1-1.5% of pour point depressants, 0.03-0.12% of oily agent and 1.2-2.2% of tackifiers. The gear oil has theadvantages that the gear oil does not contain sulfurized isobutylene, has no odor in the production process, and is neutral in itself, thereby not having corrosive effect on transmissions; the base oil, mostly vegetable oil, is economical and environmentally friendly, and the biodegradability can reach more than 95%; the viscosity of the oil is low, the flowability at a low temperature is high, normal lubrication can be ensured during start-up of a motor in winter, and rapid cooling can be guaranteed during high-speed operation.

The invention discloses a lubricant composition for whole-floating high-speed bearing. In the lubricant composition, 66.66% by mass of oil soluble polyether and 33.34% by mass of trimethylolpropane oleate are compounded to obtain composite basic oil, which is then matched with a plurality of composite additives. The lubricant composition includes the basic oil, an antioxidant, a metal deactivator, a friction improver, an anti-wear agent, an extreme pressure agent, an anti-oxidizing and anti-corrosion agent, an anti-foaming agent, a cooling accelerant, and an antirust agent. The lubricant composition has excellent viscosity-temperature character, heat conductivity, heat capacity and anti-oxidizing and anti-corrosion property, low friction coefficient, is vibration-attenuating and anti-creeping, has noise reduction and high-temperature oxidizing stability, is anti-wear, has compatibility with rubber, is anti-shear, can effectively control increase of viscosity of oil product and is free of zinc, and is suitable for motion pairs in various alloy.

The invention discloses an improved air compressor oil which is prepared from the following raw materials in parts by weight: 25-50 parts of synthetic ester oil, 11-19 parts of phosphite, 17-19 parts of fatty vulcanized isobutylene, 11-15 parts of borate, 3-7 parts of dialkyl naphthalenesulfonic acid metal salt, 4-7 parts of polyether modified organosilicon, 2-6 parts of polyalkaneneglycol, 3-7 parts of thiadiazole derivative, 4-8 parts of dibutyl phosphite, 5-9 parts of dithiophosphate, 2-7 parts of thiadiazole polysulfide and 4-9 parts of siloxane composite. The improved air compressor oil has the advantages of excellent high-temperature oxidation stability, excellent cooling property, excellent-extreme pressure abrasion resistance, lower environmental pollution, high load resistance, high temperature resistance, high pressure resistance and low cost.