688results about How to "Good extreme pressure and anti-wear properties" patented technology

The invention discloses a synthetic high-temperature lubricating grease and a production method thereof. The synthetic high-temperature lubricating grease is produced by taking synthetic oil as base oil and mixing the base oil with thickening agents, an extreme-pressure additive, an antioxidant and an anticorrosive agent, wherein the weight ratios of all ingredients are as follows: 47-94% of base oil, 2-20% of polyurea thickening agent, 2-20% of acylamide thickening agent, 0.5-5.0% of antioxidant, 1.0-5.0% of extreme-pressure additive and 0.5-3.0% of anticorrosive agent. In the invention, the synthetic base oil, the polyurea thickening agent and the acylamide thickening agent all have excellent high-temperature performance, and the organic combination thereof leads the lubricating grease to obtain excellent high-temperature performance; the polyurea thickening agent endows the lubricating grease with good colloid stability, and the acylamide thickening agent endows the lubricating grease with excellent anti-shear stability, therefore, the organic combination of colloid stability and anti-shear stability leads the lubricating grease to have excellent high-temperature performance and good losing resistance, does not change to thin and avoids losing at high temperature. The extreme-pressure anti-wear additive endows the lubricating grease with excellent extreme-pressure anti-wear performance, and the bearing capacity is high.

A lubricating polyureas-composite calcium grease is prepared through proportionally mixing basic oil, calcium hydroxide (oxide), water and C1-C20 organic acid together, heating to 30-100 deg.C, adding diisocyanate and organic amine, draining water, saponifying, heating to 210-230 deg.C, cooling and homogenizing. Its advantages are high refractory performance, stability and extreme-pressure antiwear nature.

The invention belongs to the technical field of the chemical industry, and relates to grease and a preparation method thereof, in particular to anhydrous albany grease and the preparation method thereof. The anhydrous albany grease and the preparation method comprises the following components by weight: 82-90% of base oil, 1-4% of calcium hydroxide, 6-15% of fatty acid, 0.3-1% of antioxygen, 0.5-1.5% of rust inhibitor, and 0.5-3% of extreme pressure antiwear additive. The anhydrous albany grease and the preparation method have the benefits as follows: the grease is simple in preparation process and easy to control; and the prepared product has better water erosion resistance, favorable metal adhesivity and extreme pressure abrasion resistance, and can provide outstanding lubrication and abrasion resistance protection for wheel bearings and chassis.

The invention relates to an open gear lubricating grease composition, which comprises the following components in percentage by weight: 15 to 25 percent of metallic soap, 40 to 50 percent of vegetable oil, 15 to 25 percent of ester-based oil and 10 to 20 percent of polyisobutene. Based on the 100-percent total weight of the base oil and a thickening agent, 2 to 5 percent of dialkyl dithiocarbamate, 0 to 4 percent of boric acid ester, 3 to 8 percent of borate, 1 to 3 percent of dialkyl dithiophosphate, 3 to 10 percent of sulfurized fat, 3 to 10 parts of graphite, 2 to 8 parts of molybdenum disulfide, 0.5 to 1 percent of antioxygen and 0 to 2 percent of preservative are added. The lubricating grease has the advantages that: a proper raw material mixing ratio is selected, so the extreme pressure wear-resistance performance, protective performance and adhesive performance are high; and as biodegradable raw materials are selected, environment friendliness is high.

The invention discloses a composite calcium-sulfonate-based tetrapolyurea lubricating grease and a preparation method thereof. With the weight of the lubricating grease as a reference, the lubricating grease comprises components of: (1) 10-70% of non-Newtonian fluid calcium sulfonate; (2) 1-10% of higher fatty acid calcium; (3) 1-15% of small-molecule inorganic acid calcium or organic acid calcium; (4) 0.5-30% of tetrapolyurea; and (5) 10-80% of lubricating base oil. According to the lubricating grease, calcium petroleum sulfonate or synthesized calcium sulfonate is adopted as a raw material, and the lubricating oil contains a composite calcium thickening agent and a tetrapolyurea compound. The lubricating grease has excellent extreme pressure wear resistance, ultra-long lubricating life, good adhesion, water resistance, colloid stability, high dropping point, thermal stability, corrosion resistance, and salt spray resistance.

The invention discloses a hub bearing lubricating grease and a preparation method thereof. In the lubricating grease, composite lithium soap is taken as a thickening agent, an antirusting agent, an antioxidant, an extreme-pressure anti-wear agent and a waterproofing agent are added, and a nanometer additive and the like are added according to different proportions. The lubricating grease is prepared by the processes including saponifying, dehydrating, blending, shearing, homogenizing, grinding, filtering, degassing and the like. A lubricating grease composition has the advantages of high dropping point, high wear resistance, high extreme pressure resistance, high high-low temperature performance and the like, has high water resistance and rust resistance, and is suitable for lubricating the automobile bush bearings under harsh working conditions.

The invention discloses lubricating grease for hubs of heavy trucks. The lubricating grease consists of base oil, thickening agent and additive, the thickening agent is composite lithium soap thickener, and the additive consists of borate oiling agent, compound viscosity index improver, purification dispersant, amine-type antioxidant, sulfur-phosphorous-type antioxidant and sulfonate antirusting agent. The special lubricating grease for hubs of trucks which is obtained by means of circular shearing treatment is excellent in heat resistance, adhesion, mechanical stability, water resistance, extreme pressure abrasion resistance and the like, and can meet requirements on lubrication and protection for bearings of the hubs of the trucks under harsh conditions.

The invention relates to a lithium-calcium complex lubricating grease composition and a preparation method. The lubricating grease comprises the following components: (1) 60%-87% of base oil; (2) 10%-38% of a thickening agent; and (3) 1.5%-11% of an additive, wherein the thickening agent disclosed by the invention is a lithium-calcium complex thickening agent, comprises one or more long-chain fatty acid lithium soap and one or more micromolecular acid calcium soap, and is obtained from the reactants of acid and lithium hydroxide and calcium hydroxide. The lithium-calcium complex lubricating grease prepared by the method has good mechanical stability, colloid stability, water resistance and good extreme pressure antiwear property; and above all, the hardening phenomenon is not generated under room-temperature long-term storage and high-temperature (120 DEG C) conditions on the basis that excellent performances of the original lithium-calcium complex lubricating grease are reserved.

The invention discloses a clean-type heavy-duty open gear grease with self-repairing function. The product is composed of a lubricating grease base grease prepared from an organic compound thickening mineral oil containing carbamido in molecules or synthetic oil, and additives. A base grease thickener is composed of an MDI and organic amine in a molar ratio of 1:1-3; and the base oil is mineral oil or poly alpha olefin synthetic oil. The heavy-duty open gear grease comprises the following components, calculated by the weight of the base grease: 50-60wt% of base grease, 4-8wt% of a extreme pressure antiwear agent, 1-4wt% of an oily agent, 6-8wt% of a solid additive, 0.5-1.5wt% of an antirust agent, 25-35wt% of a tackifier, 2-4wt% of a self-repairing additive, and 0.3-1.0wt% of an antioxidant. The invention adopts borate as the extreme pressure antiwear agent added with an extreme pressure agent containing a small amount of sulfur phosphorus, so as to improve the extreme pressure anti-wear performance of the lubricating grease, as well as realize low toxicity, tastelessness and environment-friendliness of the grease. Besides, soft metal Cu nanoparticles employed by the invention endow good self-repairing performance on the grease. Compared with a traditional open gear lubricant product, the heavy-duty open gear grease provided by the invention has characteristics of excellent lubrication performance, self repairing, tastelessness and environment-friendliness, and can be widely used for lubricating of open gears.

The invention relates to a special micro-lubricant for an oil-water-gas-phase micro-lubricating system. The lubricant is characterized by comprising an oiling agent A and water aqua B, wherein the oiling agent A is prepared from the following components in percentage by weight: 40-60% of polyricinoleate, 30-50% of low viscosity synthetic ester, 2-5% of phosphate and 2-5% of ethanolamine borate; the water aqua B is prepared from the following components in percentage by weight: 95-98% of water, 0.5-2% of molybdate, 0.5-2% of phosphate, 0.5-1% of lower alcohol and 0.01-0.05% of benzotriazole or derivatives. The special micro-lubricant for the oil-water-gas-phase micro-lubricating system, which is disclosed by the invention, is matched with a micro-lubricating device in use, so that the use level of a cutting liquid is saved by over 95%.

The invention provides oil-air lubricating grease which comprises the following component in percentage by weight: 80-90% of ester oil, 2-6% of inorganic thickener, 2-3% of structure improver, 1-5% of solid lubricating material, 0.2-0.5% of antioxidant, 1-5% of extreme pressure antiwear additive and 0.3-0.8% of anticorrosive agent. Since the oil-air lubricating grease is produced by using the ester oil having good biodegradability and fine high and low temperature performance as the base oil to be mixed with the environment-friendly inorganic thickener and additives, the oil-air lubricating grease has favorable biodegradability, can not cause environmental pollution, has favorable high and low temperature performance and low temperature pumpability, and has favorable extreme pressure wear resistance, thereby meeting the requirements of railway industry for the development direction of the lubricating grease and being capable of bringing more economic benefits and social benefits to railway interests. With the development of railway interests in China, the oil-air lubricating grease has fine application prospects.