437results about How to "Improve extreme pressure performance" patented technology

The invention provides a lubricating grease composition for a heavy-loading roller press bearing and a preparation method thereof. The composition has prominent extreme-pressure anti-wear property, lubricating property and water resistance. The lubricating grease composition contains the following ingredients: (a) complex lithium and calcium-based lubricating grease, (b) a tackifier, (c) an oiliness additive, (d) an extreme-pressure anti-wear agent, (e) an antioxidant and (f) a graphite additive.

The invention discloses a multifunctional semi-synthetic metal processing liquid and preparation method thereof. The multifunctional semi-synthetic metal processing liquid comprises, by weight, 5-20 parts of base oil, 8-10 parts of polyisobutylene succinic anhydride or the derivative of the same, 8-15 parts of borate, 2.5-8 parts of fatty acid methyl ester, 2 to 4 parts of rust inhibitor, 35 to 52 parts of water, 1 to 1.5 parts of amine, 0.5 to 0.8 part anti-hardening agent, 0.2 to 4.5 parts of copper corrosion inhibitor, 2 to 3 parts of aluminum corrosion inhibitor, 5 to 6 parts of coupling agents, 3 to 4 parts of fungicides and 0.2 to 0.3 part of defoaming agent. The metal processing liquid provided by the invention not only has excellent cooling effects, very good lubricating effects and extreme pressure property, excellent high temperature stability and low temperature stability, but also generates little foam. The processing liquid is an environment friendly product which can be used for the cutting and grinding operation with medium and high difficulties in the high-speed cutting and large piece cutting.

The invention provides a fluoro-free extreme-pressure microemulsion cutting liquid, whose constituents by weight percentage include water 20-40, mixed alkylolamide 6-12, boracic acid 2-6, sulfonates rust-preventing agent 8-12, auxiliary agent 1-5%, anionic surface active agent 8-12, polybasic alcohol 2-6, sulfurized grease 4-10, mineral oil 15-30, benzotrizaole 0.1-0.3. The invention also provides a process for preparing the liquid.

The invention discloses special lubricating oil for a fuel gas engine of a public transport automobile. The special lubricating oil is prepared from blended base oil, binary ethylene-propylene rubber, polymethacrylate, alkylphenol calcium sulfide, high-base-number calcium alkylbenzenesulfonate, polyisobutylene succinimide, boronated polyisobutylene succinimide, alkylated phenyl-alpha-naphthylamine, p,p'-dioctyl diphenylamine, a hindered phenol type antioxidant, dialkyl molybdenum dithiocarbamate, copper nanoparticle anti-wear additives, methyl silicone oil and thiadiazole polysulfide. According to the lubricating oil composition oil product, the sulfate ash content is lower than 0.5%, the content of phosphorus is lower than 0.03%, and the base number is 3-8mgKOH/g. According to the special lubricating oil for the fuel gas engine of the public transport automobile, aiming at the special requirements of the public transport automobile on engine oil, different additive varieties and charging sequences are adopted, so that physical and chemical indicators and use performance of the special lubricating oil are better than natural gas engine lubricating oil of the same grade, and the special lubricating oil has excellent cleaning and dispersion properties, lubricating property, abrasion resistance and oxidation resistance.

The invention relates to an anti-rust extreme pressure lithium lubricating grease composition and a preparation method thereof. The composition is prepared from 5.5%-12.5% of thickening agents, 72.8%-91.3% of base oil, 0.5%-3.8% of extreme pressure anti-wear agents, 0.28%-1.25% of antioxidants and 0.02%-1.05% of anti-rust anti-corrosion agents, wherein the base oil is high-viscosity mineral oil. The preparation method of the composition comprises the steps that one third of the base oil and 12-hydroxy stearin or a mixture of 12-hydroxy stearin and stearic acid are heated to the temperature ranging from 60 DEG C to 80 DEG C, a lithium hydroxide solution is added, the temperature is raised to range from 180 DEG C to 220 DEG C after a reaction is completed, one third of quenching oil is added, the extreme pressure anti-wear agents, the anti-rust anti-corrosion agents and the rest of the base oil are added after cooling is conducted, and the composition is prepared after grounding is conducted. The novel lubricating grease containing the extreme pressure components and the anti-rust anti-corrosion components has the excellent extreme pressure property and anti-corrosion property and can be widely applied to severer environment conditions with a medium or heavy load and water.

The invention discloses a gasoline engine lubricating coil composition and a preparation method thereof. The gasoline engine lubricating coil composition comprises the following components in percentby weight: (A) 0.1 to 6.0 percent of an ashless dispersing agent, (B) 0.1 to 8.0 percent of a clearing agent, (C) 0.01 to 1.5 percent of oil-soluble or dispersible oil stability boron-containing compound, (D) 0.003 to 0.5 percent of oil-soluble or dispersible oil stability molybdenum-containing compound, (E) 0.02 to 3.2 percent of zinc dialkyl dithiophosphate, (F) 0.01 to 3.0 percent of an antioxidant and (G) lubricating oil base oil with a main amount, wherein the boron molybdenum mass ratio of the component (C) to the component (D) ranges from 1:5 to 10:1. The blended gasoline engine oil composition contains all of the boron-containing compound, the molybdenum-containing compound and the zinc dialkyl dithiophosphate, completely exerts the synergistic effect between the additives, improves the anti-oxidation property, the anti-wear and friction-reducing properties and the extreme pressure property of the lubricating oil composition and reduces the ash content and the thionazin contentof the lubricating oil composition.

The invention discloses a preparation method of a water dispersible nano copper cooling lubricant for cold rolling. In the lubricant, oleate is used as a surfactant, divalent copper salt is used as a copper element, and hydrazine hydrate is used as a reducing agent. Nano copper is selected as a main raw material of the lubricant, and meanwhile, certain dispersant and surfactant are added to prepare the water dispersible nano copper cooling lubricant applicable to a cold rolling process. The invention aims at improving the lubricity of cold rolling, a friction surface can be primed and repaired to a certain extent through products of a friction chemical reaction, and thus, rolled steel has self repairing action.

The invention provides a non-sulfur and non-phosphorus organic molybdenum compound and preparation method and application thereof. The structural formula is shown in the formula, wherein R is a C1-C30 linear or branched alkyl or cycloalkyl. The preparation method comprises the step of reacting hydroxyalkyl amine with ammonium molybdate tetrahydrate in the presence of an organic solvent and a catalyst. The organic molybdenum compound provided by the present invention can be used as a lubricating oil additive and has good antiwear and extreme-pressure properties.

The invention discloses a solvent-diluted open-typed gear lubricant, which is characterized by the following: the basic oil is high-viscosity synthesized oil; the thickener is composite calcium sulfonate; the additive is auxiliary extreme-pressure agent, anti-oxidant and diluent; the lucribant possesses superior high-low temperature adaptability (low-temperature fluidity and high-temperature adhesive), which is not easy to volatilize under normal temperature.

The invention relates to a fan main shaft lubricating grease composition and a preparation method thereof. The composition comprises 7-15% of a thickener, 80-90% of base oil, 1.5-3.0% of an anti-wear reagent at extreme pressure, 0.5-2.0% of an antioxidant and 0.1-0 .5% of an anti-rust preservative. The thickener is composite lithium-calcium soap. The preparation method comprises heating 75-85% of base oil and 12-hydroxystearic acid to 80 to 90 DEG C, adding 10-20% of a lithium hydroxide solution and all calcium hydroxide solution into the base oil and 12-hydroxystearic acid to start a reaction, controlling a temperature to 90 to 100 DEG C, adding a dibasic acid into the mixture, stirring the mixture for 30 to 40 minutes, then adding the rest of the lithium hydroxide solution into the mixture at a temperature of 90 to 120 DEG C drop by drop, after the reaction, heating the reaction product to 130 to 140 DEG C along with stirring, keeping the temperature for 60 to 90 minutes, adding the antioxidant into the reaction product, heating the mixture to 200 to 210 DEG C, adding the rest of the base oil into the reaction product, cooling the mixture, adding the anti-wear reagent at extreme pressure and anti-rust preservative into the mixture when the temperature is 80 DEG C or less, carrying out uniform stirring, carrying out treatment homogenization through a three-roller machine to obtain a finished product and carrying out filling. The fan main shaft lubricating grease composition is characterized in that the excellent compatibility anti-wear reagent at extreme pressure and the special anti-rust preservative are used so that the main shaft lubricating grease extreme pressure properties are greatly improved and the anti-rust performance is excellent.

A composite antirust hebricant for chain contains sulfonate as antirust agent, olefine butanedioic acid type antirust agent, dialkyldithiophosphate-formaldehyde-lipoamin condensate, plant oil, phenyltriazole lipoamine salt, polyisobutylene, vaseline, 2,6-ditert-butyl p-cresol, and basic oil. Its advantages are excellent resistance to rust, salt fog and abrasion, high adhesive, and good water displacing nature.

The invention belongs to the technical field of lubricating oil, in particular to biological type micro lubricating oil which comprises the following raw materials in percentage by weight: 62-70 polyalpha olefin (PAO), 24-30 of composite synthetic ester, 1-2 N-lauroyl alanine, 1-2 composite phosphate and 1-2 dispersant. Compared with the prior art, the invention not only has better lubricating property and extreme pressure property so that few lubricating agents can meet high-end requirement of metal processing, but also can reduce the consumption of the lubricating agent to less than 5 percent of the previous consumption, reduces the harm to the environment and worker, can be degenerated biologically, and lowers the pollution to the environment to be maximum.

The invention discloses special gear oil for a shield and a preparation method of the special gear oil. The special gear oil for the shield comprises the following components in percentage by weight: 0.5-1.0% of antioxidant, 1.5-3.0% of extreme pressure anti-wear additive, 1.0-2.0% of oiliness agent, 0.3-0.7% of pour point depressant, 0.1-0.3% of anti-rusting agent, 0.1-0.3% of copper corrosion inhibitor, 100-300ppm of emulsion breaker, 10-40ppm of defoaming agent and the balance of base oil. The wear resistance and the extreme pressure property of a product are obviously improved due to the gear oil, and equipment bearings and gears are obviously better protected. In a shield tunneling process, even if a section with a quite rigid soil texture appears, the torque ripples of the shield bearings and the gears can also be guaranteed to be small, so the stable tunneling of a shield machine is guaranteed.

The invention relates to a graphene lubricating oil additive, a preparation method and application of the graphene lubricating oil additive and lubricating oil with the graphene lubricating oil additive. The graphene lubricating oil additive is prepared from, by mass, 0.01-0.5 part of graphene substances, 0.1-5 parts of polyesteramide and 50-200 parts of base oil. By the aid of polyesteramide, the graphene substances can be well dispersed in the base oil of the lubricating oil, preparation can be realized without adoption of a high-temperature high-pressure method, and adoption of complex processes for graphene modification is avoided. The graphene lubricating oil additive obtained according to the formulation is excellent in dispersion performance and free of precipitates or layering after standing for longer than 14 months, and abrasion resistance and extreme pressure resistance of the lubricating oil can be substantially improved by mixing of the graphene lubricating oil additive with graphene lubricating oil carrier oil according to a volume ratio of (1-5):(1000-10000).

The present invention discloses one kind of hollow cage-shaped nanometer solid lubricant and its preparation process. Spherical nanometer MoO3 or WO3 particle is first prepared through an ultrasonic and chemical precipitation process and surface coated with S or Se, and hollow cage-shaped nanometer solid lubricant of IF-MoS2, IF-MoSe2, IF-WS2 or IF-WSe2 of particle size 40-100 nm is then prepared through further vulcanization or selenation reaction. This kind of solid lubricant may be used alone or as additive added into lubricant oil or grease to form composite lubricant oil or grease to reduce friction coefficient, reduce wear and raise extreme pressure resistance. At the same time, the solid lubricant can meet the lubricant requirement in high temperature, low temperature, high vacuum, high humidity, high corrosion, high radiation, high load and other harsh conditions.

The invention provides a universal nonferrous metal and stainless steel cold rolling oil composite additive and a preparation method thereof and belongs to the field of lubricating agents. According to the universal nonferrous metal and stainless steel cold rolling oil composite additive, lauryl alcohol, butyl stearate, pentaerythritol oleate and lauric acid are selected as oily agents; 2,6-di-tert-butyl-4-methylphenol is selected as an antioxidant; benzotriazole and thiadiazole derivatives are used as metal deactivators; dialkyl phosphorodithioate serves as an antiwear agent; and hydrogenated base oil serves as a solvent. The alcohol-ester type oily agents are mainly used for compounding with a little amount of acid oily agents as supplementation; a little amount of dialkyl phosphorodithioate is used as the antiwear agent to reinforce an oil film so as to improve the surface quality of a rolled stock; the service life of rolling oil is prolonged through a little amount of the antioxidant and the metal deactivators, the cyclic use frequency is increased, and rolled pieces are protected against corrosion. The universal nonferrous metal and stainless steel cold rolling oil composite additive is convenient to use, low in cost and little in dosage, and has the characteristics of high oil film strength, good antiwear and antifriction effect, high oxidation resistance and excellent annealing performance.

The invention discloses an open gear lubricating oil, which is characterized by the following: adopting synthesized oil as basic oil; making polyplant oil as thickener; adding auxiliary thickener, extreme-pressure agent, antirust agent and anti-oxidant; possessing excellent stickiness and low-temperature fluidity.