182 results about "Friction modifier" patented technology

The invention belongs to the technical field of hydraulic oil, and particularly discloses super-lubricity energy-saving anti-wear hydraulic oil and a preparation method thereof. The super-lubricity energy-saving anti-wear hydraulic oil is prepared from the following components in parts by weight: 75 to 90 parts of composite base oil, 5 to 7 parts of viscosity index improver, 3 to 5 parts of friction improver, 1 to 3 parts of pour point depressant, 0.005 to 2 parts of anti-rust preservative, 0.003 to 0.02 part of demulsifying agent, 0.01 to 0.03 part of anti-foaming agent, 0.05 to 1 part of clearing agent, 0.05 to 2 parts of antioxidant and 0.05 to 1.5 parts of metal deactivator, the composite base oil is composed of coal base oil, second-class base oil and alkyl naphthalene base oil according to the mass ratio of 5: 4: 1. The super-lubricity energy-saving anti-wear hydraulic oil provided by the invention is high in viscosity index, excellent in shear stability, excellent in oxidation stability, excellent in low-temperature performance and small in friction coefficient, the service life of a product is greatly prolonged, the super-lubricity energy-saving and environment-friendly performance requirements are met, and the super-lubricity energy-saving anti-wear hydraulic oil has a wide application prospect.

The invention relates to the technical field of bearing lubricating grease, and particularly discloses a high-temperature-resistant lubricant composition and a preparation method thereof. The high-temperature-resistant lubricant composition comprises the following raw materials in parts by weight: 90-110 parts of base oil, 30-35 parts of a thickening agent, 2-3.5 parts of modified nanoparticles, 0.5-1.5 parts of an antioxidant, 1-3 parts of an antirust agent and 0.5-1 part of a friction modifier, the thickening agent comprises polyethylene glycol, modified polyurea lubricating grease and a surfactant according to a mass ratio of 1: (0.3-0.5): (0.1-0.15); the modified nano particles are brominated-1-hexadecyl-3-methylimidazolyl ionic liquid modified nano particles, and the nano particles comprise carbon nano particles and nano tungsten disulfide in a mass ratio of (2-3): 1. The lubricating grease composition provided by the invention has the advantages of good nanoparticle dispersibility, strong high temperature resistance, and excellent oxidation stability and antifriction and antiwear properties.

The invention relates to the technical field of brake pads, in particular to a brake pad capable of reducing abrasion of a brake disc and a preparation technology thereof.The brake pad comprises, by weight, 20%-32% of reinforcing fibers, 12%-18% of a binder, 22%-34% of a friction regulator and 24%-38% of filler and functional additives, the reinforced fibers are at least one of titanium carbide coated carbon fibers, steel fibers and aluminum silicate ceramic fibers. According to the invention, the reinforced fibers construct a high-strength heat conduction network, and heat is quickly dispersed to reduce thermal stress concentration; the binder ensures the structural stability at high temperature; the friction regulator optimizes a friction coefficient curve through the synergistic effect of lubrication and friction increasing, and high-temperature fluctuation is avoided; the filler and the functional additive enhance the heat absorption and buffering capability, and adjust pores to relieve thermal shock. All the components have a synergistic effect, so that hot cracks of the brake disc can be reduced, and the crack resistance and the brake stability under extreme working conditions are improved.

The invention relates to a track top friction regulator roadside coating device and a coating adjusting method thereof, and the track top friction regulator roadside coating device comprises an outer track coating plate, an inner track coating plate, a friction regulator storage module, a transverse force strain gauge, a vertical force strain gauge and a wheel-rail force remote monitoring control system, the friction regulator storage module is connected to the wheel-rail force remote monitoring control system through a storage module signal control line, the transverse force strain gauges are pasted to the top faces of rail feet of the outer rail and the inner rail, and the vertical force strain gauges are pasted to the rail webs of the outer rail and the inner rail. The transverse force strain gauges and the vertical force strain gauges are connected to a wheel-rail force remote monitoring control system through wheel-rail force signal control lines. The method has the beneficial effects that parameters such as the coating amount or the coating frequency of the friction modifier can be dynamically adjusted according to the wheel-rail force, differential coating of the friction modifier of the inner rail and the outer rail can be achieved, the optimal antifriction effect is achieved, meanwhile, the coating amount of the friction modifier is further reduced, and environmental pollution is reduced.

The invention relates to the technical field of brake pads, in particular to a brake pad adaptive to a carbon-ceramic brake disc and a preparation process thereof.The brake pad comprises, by weight, 25%-57% of reinforced fibers, 22%-49% of a lubricant, 7%-17% of a binder, 7.2%-28.1% of a friction modifier and 3%-23% of filler; the reinforced fiber is at least one of nano silicon nitride modified ceramic fiber, carbon fiber and aramid fiber. Through cooperation of the components, the prepared brake pad has the advantages of being good in heat conduction, resistant to shearing and abrasion, good in toughness, capable of reducing noise, stable in friction coefficient, reliable at low temperature, high in high-temperature braking force, stable in braking and the like.

To provide a friction material that exhibits superior wear resistance and fade resistance under high load conditions, among other frictional performance characteristics. [Solution] A friction material comprising a fibrous base material, a friction modifier, and a binder, wherein the copper content is 0.5% by mass or less in terms of copper element, the fibrous base material contains steel fibers, the steel fiber content is more than 20% by mass and less than 50% by mass, and the friction modifier contains titanium carbide powder.

The invention provides a gas engine lubricating oil composition and a preparation method thereof. The gas engine lubricating oil composition of the present invention comprises: (A) an alkyl phosphate compound; (B) alkylated diphenylamine; (C) a polyisobutylene succinic acid pentaerythritol ester dispersing agent; (D) a salicylate and / or sulfonate; (E) zinc dialkyl dithiophosphate; (F) an oil-soluble organic molybdenum friction modifier; (G) a metal corrosion inhibitor; (H) a pour point depressant; (I) a major amount of a lubricating base oil. The gas engine lubricating oil composition disclosed by the invention has excellent high-temperature oxidation resistance, cleaning performance, extreme pressure anti-wear performance and anti-corrosion performance.

This invention relates to a lubricating oil composition comprising or resulting from the admixing of: (i) a base oil; (ii) one or more overbased metal based detergents; and (3) a friction modifier comprising glycerol monooleate, glycerol dioleate, glycerol trioleate or combinations thereof at from 0.2 to 1.0 wt. % of the composition. The composition has a total sulfated ash of less than or equal to 1.0 wt. %, a high temperature high shear viscosity at 150° C. (HTHS) as determined according to ASTM D4683-20 of greater than or equal to 1.8 mPa·s and less than or equal to 2.9 mPa·s, and a total phosphorous level of less than or equal to 0.080 wt. %. The inventive composition provides a 10% to 80% decrease in journal bearing wear as measured by wear scar volume in μm3 using the MTM-R test method compared to a lubricating oil composition of comparable HTHS, but not including a friction modifier comprising glycerol monooleate, glycerol dioleate, glycerol trioleate or combinations thereof. Also provided are a method of decreasing journal bearing wear in an internal combustion engine and a method of making the lubricating oil composition.

[Problem] The present invention provides a friction pair having excellent low-speed performance stability, comprising a disc brake pad having a friction material composed of a friction material composition and a stainless steel disc rotor. The friction material composition comprises a binder, a fiber base material, and a friction modifier, and is free of copper and iron-based metal fibers. [Solution] The present invention utilizes a friction material composition containing 20-30% by weight of a titanate as an inorganic friction modifier relative to the total weight of the friction material composition, and is free of mica and vermiculite. The titanate is preferably lithium potassium titanate having a layered crystal structure.

The application provides a hybrid vehicle engine lubricating oil composition and a preparation method thereof.The hybrid vehicle engine lubricating oil composition comprises the following components: (A) a benzotriazole derivative; (B) a composite antioxidant comprising an alkylated diphenylamine antioxidant and a sulfide phenolic antioxidant; (C) a polyisobutylene succinimide ashless dispersant; (D) a sulfonate and / or a sulfated alkyl phenate; (E) a zinc dialkyldithiophosphate; (F) a composite friction modifier comprising an oil-soluble organic molybdenum friction modifier and an ashless friction modifier; (G) a phosphite type extreme pressure antiwear agent; and (H) a major amount of a lubricating oil base oil; wherein the structure of the benzotriazole derivative is shown in formula (I): wherein the definitions of the groups are shown in the specification.The hybrid vehicle engine lubricating oil composition has excellent antioxidant performance, corrosion resistance and rust resistance, and good emulsion retention performance and wear resistance.

Providing a lubricating oil composition suitable for use in electric vehicles. 【Solution】A base oil containing a Fischer-Tropsch-derived base oil, a poly-α-olefin base oil, or a mixture thereof, and a friction modifier additive in the range of 0.5 to 12% by weight, wherein the friction modifier additive has the formula (I): R 1 [(AO) n -R 2 m (I) [In the formula, R 1 is a residue of a group having at least two active hydrogen atoms, m is at least 2, AO is an alkylene oxide residue, each n is independently 0 to 100, each R 2 is independently H or R 3 , and each R 3 is independently a residue of a polyhydroxyalkyl or polyhydroxyalkenyl carboxylic acid, a residue of a hydroxyalkyl or hydroxyalkenyl carboxylic acid and / or a residue of an oligomer of a hydroxyalkyl or hydroxyalkenyl carboxylic acid], and the kinematic viscosity at 100 ° C is in the range of 2.0 to 5.5 cSt.​

To provide a friction pair having an excellent stability of a braking effect and wear resistance of a friction material, where the friction pair is consisting of a disc brake pad having a friction material manufactured from a friction material composition containing a binder, a fiber base material, and a friction modifier, but not containing a copper component and a ferrous-base metallic fiber, and a stainless steel disc rotor. The present invention uses a friction material composition that does not contain a metallic fiber other than a ferrous-base metallic fiber but contains 10-15 wt % of a carbonaceous lubricant as a friction modifier relative to an entire friction material composition, and 15-30 wt % of an inorganic friction modifier with Mohs hardness of 6 or more relative to the entire friction material composition, where a thermal conductivity of the friction material is 1.2-3.0W / m·K.

The invention discloses a preparation method of a carbon fiber reinforced polymer-based composite automobile brake disc, and relates to the technical field of automobile braking. Mixing the PAN-based chopped carbon fibers with thermosetting resin and a friction modifier in parts by mass, carrying out hot-pressing compression molding, and curing to form a disc-shaped blank; heating and carbonizing in an inert atmosphere; the dense structure is then impregnated with hot isostatic pressing or a pre-ceramic polymer. The obtained composite brake disc has the advantages of light weight, high strength, good high-temperature-resistant stability, lasting friction performance, low cost, suitability for batch production and the like.

To provide a friction couple having an enhanced effect and stability in a low speed range, where the friction couple has a disc brake pad having a friction material manufactured from a friction material composition having a binder, a fiber base, and a friction modifier, without containing a copper component and a ferrous metallic fiber, and a stainless steel disc rotor. The present invention uses a friction material composition containing 20-30 weight % of a titanate relative to an entire friction material composition as an inorganic friction modifier without containing an inorganic friction modifier that has a Mohs hardness of 4 or less and is cleavable. The above-explained titanate is preferably a layer crystal structure lithium potassium titanate.

The invention discloses shock absorber oil for a full-active hydraulic suspension system and a preparation method of the shock absorber oil. The shock absorber oil comprises the following components: the balance of poly-alpha-olefin synthetic oil; 10-15% of a viscosity index improver; 0.1 to 0.4% of a nanoparticle lubricant; 0.005 to 0.03% of a friction modifier; 0.5%-1.5% of a dispersing agent; 0.6%-2.0% of a sulfur-phosphorus type extreme pressure anti-wear agent; 0.1 to 0.8 percent of an antioxidant; and 30 to 100 ppm of a defoaming agent. The preparation method comprises the following steps: firstly, adding 10% of poly-alpha-olefin synthetic oil serving as a raw material into a production kettle, stirring and pre-heating; adding a nano-particle lubricant, stirring and dispersing at a high speed, adding a dispersant, carrying out grafting reaction at a constant temperature of 80 DEG C, adding a viscosity index improver, and continuously stirring at a constant temperature of 80 DEG C; and adding the residual poly-alpha-olefin synthetic oil, an antioxidant and other raw materials into the production kettle for reaction to obtain the shock absorber oil. The shock absorber oil has a high viscosity index and good high-temperature lubricating performance.

The purpose of the present invention is to provide: a friction modifier capable of achieving both an antifriction effect and storage stability; and a lubricating oil composition containing the friction modifier, the lubricating oil composition having a high antifriction effect and high high-temperature stability. The present invention pertains to a friction modifier containing a copolymer (A) having, as essential constituent monomers, a monomer (a) represented by general formula (1) and a monomer (b) represented by general formula (2), the average value of p per mole of the monomer (a) among the monomers constituting the copolymer (A) being 1-4, the weight-average molecular weight of the copolymer (A) being 50,000-380,000, and the average value of p per mole of the monomer (a) being 1-4. The copolymer (A) contains, as a constituent monomer, 10-60 wt% of the monomer (a) based on the total weight of the monomers constituting the copolymer (A). [In general formula (1), A1 represents a polymerizable group; -X < 1->,-X < 2-> and-X < 3-> are each independently a group represented by-O-or-NH-; r1 represents an alkylene group having 1 to 4 carbon atoms; r2 is an alkylene group having 2 to 20 carbon atoms; r3 is a hydrogen atom; and p is an integer from 1 to 100, and when p is 2 or more, the plurality of R2 and X3 are the same or different. ] [In general formula (2), R4 is a hydrogen atom or a methyl group; -X4 <-> is a group represented by-O <-> or-NH <->; and R5 is a straight chain or branched chain alkyl group with 5-44 carbon atoms. ]. # imgabs0 #

This invention relates to a shock absorber lubricant composition, a shock absorber, and a friction adjustment method for the shock absorber lubricant composition, which can balance operational stability and ride comfort, particularly at low amplitudes. The shock absorber lubricant composition contains a base oil and a friction modifier, the friction modifier containing pentaerythritol ester, wherein the pentaerythritol ester contains pentaerythritol tetraester in a maximum proportion or at a proportion of 50% by mass or more, and the content of pentaerythritol ester is 0.5% by mass or more.

The invention discloses an efficient anti-attrition lubricating and cooling multifunctional complexing agent for a lubricating system of an internal combustion engine, which is prepared from the following raw materials in parts by weight: base oil, a purification dispersant, a zinc butyl octyl dithiophosphate oxidation and corrosion inhibitor, a molybdenum butyl octyl dithiophosphate friction modifier, a trivar energy-gathered lubricating oil modifier, heat-conducting oil, a graphene additive, an extreme pressure anti-wear agent and an oiliness agent. The invention relates to the technical field of internal combustion engine cooling, the added heat conduction oil enables the complexing agent to have efficient heat conduction performance, low operation pressure and a wide working temperature range, and in cooperation with complementation of the trivar energy-gathered lubricating oil improver and the graphene additive, the complexing agent has the advantages that the complexing agent is more efficient in heat conduction performance, lower in operation pressure and wider in working temperature range; and when the graphene interacts with heat generated when the internal combustion engine works, part of heat energy on the internal combustion engine can be taken away, the temperature is further reduced, and cooling and lubricating of the internal combustion engine are achieved.

An asbestos free friction material composition and associated brake pad for vehicles including inorganic and / or organic and / or metallic fibers, at least a binder, at least a friction modifier or lubricant, at least a filler or abrasive and at least a soluble salt of barium and / or calcium and / or aluminum and / or silver with percentage between 0.5-10% by weight. Among them barium carbonate, calcium hydroxide, aluminum triacetate and silver acetate are preferably.

A lubricating oil composition for an internal combustion engine having a roller follower type valve train is disclosed. The composition comprises: a large amount of an oil of lubricating viscosity; one or more magnesium detergents in an amount to provide from 100 to 1000 ppm magnesium to the lubricating oil composition; 0.1 wt% to 0.5 wt% of an organic friction modifier; and d) optionally a viscosity modifier present in no more than 0.5% by weight. The composition is substantially free of molybdenum friction modifiers and has a total boron content ranging from 20 to 200 ppm.

In one or more embodiments, this application relates to tribotechnical additive and lubricant compositions based on self-assembled carbon nanoarchitectonics derived through nanoscale modifications of organosilane-functionalized nanocarbon with one or multiple combinations of organo-molybdenum, organo-boron, organo-sulfur, organo-phosphorus, and heterocyclic compounds. The novel lubricant is characterized by having a composition comprising (A) one or more types of the novel additive compositions, (B) Base oil / / lubricant, and optionally (C) one or more additives selected from the group including antioxidants, dispersants, detergents, anti-wear additives, extreme pressure additives, friction modifiers, viscosity index modifiers, seal swell additives, defoamers, pour point depressants and corrosion / rust inhibitors. The selfassembled carbon nanoarchitectonics is expected to enhance the surface chemistry, antiwear, antifriction, antioxidancy, electrothermal, and corrosion inhibiting characteristics of the tribotechnical compositions for formulating high-quality solutions in a wide range of applications.

A lubricating oil composition is disclosed. The composition comprises a major amount of an oil of lubricating viscosity; one or more ashless dispersants; at least one phosphorus-containing antiwear additive, wherein the at least one phosphorus-containing antiwear additive is a phosphorus-containing acid, a phosphate ester, a phosphite ester, a thiophosphate ester, or an amine salt thereof; at least one friction modifier, wherein the at least one friction modifier is a diol, an ethoxylated amine, a fatty acid ester, or an alcohol; a nitrogen-containing friction modifier having the structure wherein R1 and R2 are independently a branched C10-C25 hydrocarbyl group.

A lubricating oil composition according to the present embodiment is a lubricating oil composition to be used in a sliding member coated with hydrogen-containing diamond-like carbon, and contains a base oil and a friction modifier. The friction modifier contains a fatty acid ester of pentaerythritol.

A polymer comprising: a structural unit derived from a compound represented by the following formula (1); and, a structural unit derived from a (meth)acryloyl group-containing compound, wherein the polymer has a content of the structural unit derived from the compound represented by the following formula (1) of 15% by mass or more based on 100% by mass of a total of all structural units, and the polymer has a weight average molecular weight of 5,000 to 500,000.

The application provides a Mannich ashless dispersant, a lubricating oil composition and application thereof, the Mannich ashless dispersant has a structure shown in formula I: wherein R1 is selected from H, a hydroxyl group, a C1-C 12 The composition comprises 3-7 wt% of the ashless dispersant, 0.05-0.3 wt% of a detergent, 0.7-1.5 wt% of an anti-wear agent, 1.5-4 wt% of an antioxidant, 0.01-0.1 wt% of a corrosion inhibitor, 0.2-0.6 wt% of a friction modifier, 0.001-0.003 wt% of an antifoaming agent and the balance of base oil, with the total weight of the lubricating oil composition being 100%. The lubricating oil composition has excellent electrochemical performance, mechanical protection performance, synchronizer durability and friction characteristics, heat conduction performance and material compatibility.

The present disclosure provides a method of improving the storage stability of a lubricating composition comprising a peralkalized magnesium sulfonate detergent by post-treating the detergent with a selected hydrocarbyl-substituted succinic acid or anhydride compound.

The present application relates to the technical field of brake pad, and particularly relates to a brake pad capable of reducing brake disc wear and a preparation process thereof, the brake pad is composed of the following components in percentage by weight: reinforcing fiber 20-32%, binder 12-18%, friction modifier 22-34%, filler and functional additive 24-38%, and the reinforcing fiber is at least one of titanium carbide coated carbon fiber, steel fiber and aluminum silicate ceramic fiber. In the present application, the reinforcing fiber constructs a high-strength heat conduction network, disperses heat quickly to reduce thermal stress concentration; the binder guarantees structural stability under high temperature; the friction modifier optimizes the friction coefficient curve through lubrication and synergistic effect of friction increasing, and avoids high temperature fluctuation; the filler and functional additive enhance the heat absorption and buffering capacity, and adjust the porosity to relieve thermal shock. The synergistic effect of the components can reduce brake disc thermal cracks, and improve the crack resistance and braking stability under extreme working conditions.

An in-situ oil-based liquid superlubrication method is realized in a superlubrication system. The superlubrication system uses any one of silicon nitride, silicon dioxide, zirconium oxide or tungsten steel as a friction pair, uses an oil-based liquid as a lubricant, and pre-adds or coats a pre-rubbing lubricating liquid on the surface of the friction pair. The pre-rubbing lubricating liquid consists of the following components by weight percentage: a friction modifier: 0.01% to 15.0%, and the balance of a polyhydric fatty alcohol. The in-situ oil-based liquid superlubrication method comprises: 1) adding the pre-rubbing lubricating liquid to the surface of the friction pair and rubbing; 2) after cleaning the surface of the friction pair, adding the oil-based liquid to the surface of the friction pair obtained in step 1), so as to realize the in-situ oil-based liquid superlubrication. The method described in the application has realized the robust superlubrication of various oil-based liquids on the surface of the carbon-based film.

A lubricating oil composition is disclosed. The composition comprises a major amount of an oil of lubricating viscosity, and one or more dispersant friction modifiers given by Structure A, (I). R1 and R3 are independently a linear or branched monovalent hydrocarbon group having from 4 to 100 carbon atoms; x is 1 to 3; and y is 1 to 3; r2 is a linear or branched monovalent hydrocarbon group having 4 to 100 carbon atoms or is hydrogen; and at least one of R1, R2, and R3 is a polyisobutylene group having a molecular weight of 500 or more.

A friction material includes a friction modifier, a binder, and a fibrous material. An alkali metal salt of phosphoric acid and a metal sulfide are contained as the friction modifier. The alkali metal salt of phosphoric acid may include trisodium phosphate. A wax containing, as a main component, an ester of a higher fatty acid and a higher alcohol may be contained as the friction modifier.