73 results about "Friction modifier" patented technology

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 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.

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.

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.

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 driveline lubricating composition for electric or hybrid-electric motor systems including a phosphorus antiwear additive and a multi-functional oil-soluble organolmolybdenum friction modifier to provide friction modification and low copper leaching.

The application provides a kind of vehicle grease composition and its preparation method.The vehicle grease composition comprises the following components by weight: base oil 60-92 parts, thickener 8-40 parts, friction modifier additive 1-10 parts;The thickener is selected from one or more of polyurea soap powder, composite calcium sulfonate soap powder and amide sodium soap powder.The vehicle grease composition provided by the application can greatly reduce the dependence of vehicle grease on lithium resources, while the comprehensive performance is excellent, meets the lubrication demand of commercial vehicle hub bearing, and the process is stable and feasible.

Provided are a shock absorber-lubricating oil composition, a lubricating oil additive, and a method for adjusting the friction characteristics of the shock absorber-lubricating oil composition, capable of making both operation stability and ride comfort compatible with each other. A shock absorber-lubricating oil composition contains a base oil and a friction modifier. The friction modifier contains a pentaerythritol ester. The base oil contains an ester oil as a main component.

The invention belongs to the technical field of rail transit operation and maintenance materials, and discloses an environment-friendly wheel track wear-resistant protective material and a preparation method thereof. The raw materials comprise a base material, a rheology regulator, a wetting regulator, a friction regulator, a solid lubricant, an antirust agent and a fluid. The environment-friendly wheel track wear-resistant protective material prepared by integrating nano-compounding and environment-friendly passivation technologies has the characteristics of high wear resistance, strong adhesion and environment friendliness, realizes high wear resistance, strong adhesion and rust construction capability of the surface of a steel rail, is suitable for long-acting protection of wheel track contact surfaces of road sections such as a track traffic heavy haul railway curve, a turnout zone and the like, and has a good application prospect. And the maintenance cost and the environmental pollution are obviously reduced.

The present invention provides a lubricating oil composition comprising a base oil composition and a friction modifier, wherein the base oil composition comprises i. a first base oil selected from Fischer-Tropsch group III base oils, and ii. a further base oil consisting of a monoester base oil in an amount of 25% by weight or less relative to the total weight of the lubricating oil composition, the friction modifier is present in an amount ranging from 0.25 to 2.5% by weight relative to the total weight of the lubricating oil composition and is selected from glycerol monoester and monoester amine salts of formula (I), where R is selected from saturated or unsaturated C4-C22 hydrocarbon groups, R1 is selected from saturated or unsaturated C1-C24 hydrocarbon groups, and n is an integer in the range of 1 to 4, and the lubricating oil composition is 1.5 to 4.0 mm 2 It has kinematic viscosity at 100°C in the range of / second, measured by the open-cup method, a flash point of at least 160°C, and an aniline point of at least 80°C. JPEG2026522025000013.jpg16128

The application provides a preparation method and application of a lubricating oil friction-reducing agent, and a structural formula is as follows: the lubricating oil friction-reducing agent is an organic friction modifier, N-isopropyl acrylamide and oleylamine are used as reaction substrates, stirring reaction is carried out at 80 DEG C for 48 h, and a product is obtained. Nitrogen atoms and oxygen atoms in the molecular structure of the friction-reducing agent have lone pair electrons, can form ordered molecular adsorption films on the surface of metal, reduce the friction of the surface of a metal friction pair, and have excellent friction-reducing performance in base oil.

A friction block or layer made of an asbestos-free friction material, the friction material comprising inorganic and / or organic and / or metal fibers, at least a binder, at least a friction modifier or lubricant, and at least a filler or abrasive as constituent materials, wherein the asbestos-free friction material further comprises a hydrophobic wax as an additional constituent material or additive, the hydrophobic wax preferably being present in 0.5% to 5% by volume, the asbestos-free friction material block or layer being hydrophobic, the hydrophobicity being defined as the absorption time of droplets formed from 20 + / - 5 pL of distilled water within the friction material being greater than 60 minutes, such that the force required to separate the friction block or layer from a metal surface to which it has been electrochemically bonded is less than 15 Nw.

Friction block or layer made of an asbestos free friction material, the friction material including, as composing materials thereof, inorganic and / or organic and / or metallic fibers, at least a binder, at least a friction modifier or lubricant and at least a filler or abrasive, wherein the asbestos free friction material also contains, as an additional composing material or additive, an hydrophobic wax, preferably present from 0.5% to 5% in volume, the asbestos free friction material block or layer possessing a hydrophobicity, defined as the time of absorption within the friction material of a liquid drop formed by 20+ / −5 μL of distilled water, of more than 60 minutes, so that the force to detach the friction block or layer from a metallic surface to which it has been made to stitch electrochemically is lower than 15 Nw.

A lubricating oil composition is disclosed. The composition includes a major amount of an oil of lubricating viscosity and one or more dispersant friction modifiers given by Structure A,R1, and R3 are independently a linear or branched-chain monovalent hydrocarbyl radical of 4 to 100 carbon atoms; x is from 1 to 3; and y is from 1 to 3; R2 is a linear or branched-chain monovalent hydrocarbyl radical of 4 to 100 carbon atoms or hydrogen; and at least one of R1, R2, and R3 is a polyisobutenyl group having a molecular weight of 500 or greater.

This invention relates to the field of lubricating oil technology, and discloses a lubricating oil composition and its preparation method. The lubricating oil composition includes a base oil, an extreme pressure anti-wear agent, a friction modifier, and optional other additives. The extreme pressure anti-wear agent is selected from isobutylene sulfide and / or dialkyl dithiophosphates, and the friction modifier is an ammonium phosphate salt. The other additives are selected from at least one of viscosity index improvers, antioxidants, metal deactivators, dispersants, detergents, and antifoaming agents. By controlling the specific types of extreme pressure anti-wear agents and friction modifiers, better synergistic effects can be achieved between them and with other components, resulting in a lubricating oil composition with excellent anti-friction and wear properties while exhibiting excellent compatibility with silicone sealant materials.

The invention relates to the technical field of lubricating oil, in particular to engine lubricating oil and a preparation method and application thereof. The engine lubricating oil comprises the following components in parts by weight: 40-50 parts of II + type base oil, 30 parts of III type base oil, 12-16 parts of an engine oil complexing agent, 6-10 parts of a viscosity index improver, 0.2-0.5 part of a pour point depressant, 0-0.5 part of a friction improver and 0.1-0.5 part of an antioxidant, the antioxidant comprises nonyl-N-(nonylphenyl) aniline, and the friction modifier comprises molybdenum dialkyldithiocarbamate. The engine lubricating oil provided by the invention not only meets the specification requirement of 10W-40 in API CK-4, but also can effectively reduce the friction coefficient and improve the energy-saving effect of a light truck engine, has excellent detergency, wear resistance, oxidation resistance and durability, is especially suitable for being used as the engine lubricating oil special for national VI light trucks, and has wide application prospects. The performance requirements of the special long-service-life engine oil for the national VI light truck can be met.

A driveline lubricating composition for electric or hybrid-electric motor systems including a phosphorus antiwear additive and a multi-functional oil-soluble organomolybdenum friction modifier to provide friction modification and low copper leaching.

The invention relates to the technical field of lubrication, in particular to an anti-wear lubricating grease material for new energy automobile transmission and a preparation method thereof, and the anti-wear lubricating grease material comprises the following components in percentage by weight: 3.3%-8.66% of isocyanate, 3.7%-9.64% of organic amine, 1.5%-3.5% of a friction modifier, 2.5%-6% of an extreme pressure anti-wear agent, 1.5%-3% of an anti-rust agent and 73%-84.7% of base oil. The lubricating grease composition disclosed by the invention has excellent high-temperature performance and extreme-pressure anti-wear performance, also has good anti-corrosion performance, can remarkably improve the lubricating condition of a constant velocity universal joint of a new energy automobile, prolongs the service life of the constant velocity universal joint, can reach the use temperature of-30 to 180 DEG C, and can meet the lubricating requirement of a cross shaft universal joint of a medium-heavy commercial vehicle.

The application belongs to the technical field of hydraulic oil, and particularly discloses super-smooth energy-saving anti-wear hydraulic oil and a preparation method thereof.The components of the super-smooth energy-saving anti-wear hydraulic oil include, by weight, 75-90 parts of composite base oil, 5-7 parts of viscosity index improver, 3-5 parts of friction modifier, 1-3 parts of pour point depressant, 0.005-2 parts of rust and corrosion inhibitor, 0.003-0.02 parts of anti-emulsifier, 0.01-0.03 parts of anti-foaming agent, 0.05-1 parts of detergent, 0.05-2 parts of antioxidant, and 0.05-1.5 parts of metal deactivator; the composite base oil is composed of coal base oil, second-class base oil and alkyl naphthalene base oil in a mass ratio of 5:4:1.The super-smooth energy-saving anti-wear hydraulic oil has a high viscosity index, excellent shear stability, excellent oxidation stability, excellent low-temperature performance and small friction coefficient, greatly prolongs the service life of the product, meets the requirements of super-smooth energy-saving environmental protection performance, and has a wide application prospect.

The invention relates to the technical field of magneto-rheological shock absorbers, in particular to a sealing lubricant and a magneto-rheological shock absorber, the sealing lubricant comprises the following components by weight: 60-80% of a base carrier liquid; 10 to 25% of synthetic ester; 3-10% of alkyl silicone oil; 5-20% of a viscosity index improver; 1-3% of an antirust agent; 0.1-3% of a dispersant; 0.5-3% of a nanometer solid lubricant; the main component of the sealing lubricant is base carrier liquid, the base carrier liquid is similar to carrier liquid components in magnetorheological fluid, and in the long-term working process, even if a sealing ring of a floating piston above has a very small amount of sealing lubricant permeating into a magnetorheological fluid cavity, the sealing lubricant can be prevented from leaking out of the magnetorheological fluid cavity. The magnetorheological fluid-based carrier fluid brought out or volatilized due to reciprocating motion of the piston rod can be compensated, so that the stability of the concentration of the magnetorheological fluid can be maintained, and the consistency of the performance of the magnetorheological fluid can be ensured; in addition, the sealing lubricant used in the invention has a nonionic characteristic, so that the rheological property of the magnetorheological fluid cannot be damaged even if a small amount of the sealing lubricant leaks into a magnetorheological fluid cavity under extreme conditions.

The present application provides a gasoline engine oil composition, which comprises an aromatic amine dispersant, a naphthylamine antioxidant, a salicylate detergent, an organic molybdenum friction modifier, a metal corrosion inhibitor and a lubricating oil base oil, wherein the aromatic amine dispersant has a structure as shown in formula (I): wherein the definitions of the groups are described in the specification. The gasoline engine oil composition of the present application has very excellent detergent, dispersant, antioxidant and corrosion resistance properties, and can reduce the addition amount of the antioxidant.

This invention relates to the field of lubricating oil technology, and more particularly to a lubricating oil composition for stationary gas engines, its preparation method, and its application. The lubricating oil composition includes a base oil, a composite additive, and a friction modifier; the composite additive includes one or more of anti-wear agents, detergents, antioxidants, and dispersants; the friction modifier includes a mixture of an organic friction reducer and an organic molybdenum friction modifier, wherein the weight ratio of the organic friction reducer to the organic molybdenum friction modifier is 1:(1~5). The lubricating oil composition for stationary gas engines, its preparation method, and its application provided by this invention can achieve a stationary gas engine oil composition that balances good resistance to high-temperature oxidation, nitration, and friction and wear.

The invention discloses a preparation method and application of a high-temperature stable resin-based friction material, and relates to the technical field of automotive friction materials.The preparation method comprises the following steps that a thermosetting resin binder, reinforced fibers, a metal filler, a friction modifier, ceramic abrasive particles and a damping agent are put into a high-speed mixer to be evenly mixed, and a mixture is obtained; placing the mixture in a mold, and carrying out hot press molding to obtain a friction material A; the friction material A is subjected to post-curing heat treatment, and a friction material B is obtained after the thermosetting resin binder is completely cured; the friction material B is machined; and carrying out high-temperature surface short-time ablation treatment on the mechanically processed friction material B to obtain the high-temperature stable resin-based friction material. The prepared friction material has the following effects that the high-temperature stability is remarkably improved, the friction coefficient stability is improved, the abrasion to an aluminum ceramic brake disc is remarkably reduced, and the initial friction performance is excellent.

The invention belongs to the field of special oil for high-speed rail damping systems, and particularly relates to a high-speed rail damper oil composition, a preparation method and application. The composition is prepared from 10 to 20 parts of a viscosity index improver, 0.01 to 1 part of a friction improver, 0.01 to 0.2 part of an anti-rust agent, 0.1 to 1.0 part of an antioxidant, 0.01 to 0.2 part of an anti-wear agent, 0.01 to 0.1 part of a demulsifying agent, 0.01 to 0.1 part of an anti-foaming agent and 75 to 90 parts of base oil. The viscosity index improver is polymethacrylate, the molecular weight of the viscosity index improver is 17,000-19,000, and the carbon number of a side chain of the viscosity index improver is 10-20. The high-speed rail shock absorber oil composition disclosed by the invention has excellent low-temperature fluidity, high-temperature stability and anti-rust property, particularly has excellent wear resistance, and can ensure smooth operation under a high-load condition (15MPa).

A friction pair including a disc brake pad and a stainless steel disc rotor is provided. The disc brake pad has a friction material composition including a binder, a fiber base material, and a friction modifier and excluding a copper component and any metallic fiber. The friction material composition includes 1-6 weight % trimanganese tetraoxide as an inorganic friction modifier and 1-10 weight % graphite, all relative to the total amount of the friction material composition. The trimanganese tetraoxide reduces to manganese during braking, depositing on the stainless steel rotor to toughen the surface and prevent tear-off or lumping, and the graphite promotes this reduction while also serving as a lubricant.

The present disclosure relates to microencapsulated friction modifiers additives used in lubricants or other solutions, to their preparation, and to the use thereof to improve fuel economy of the engines and machines by enhancing friction reduction and prolonging the friction reduction time period.

A lubricating oil composition for internal combustion engine with a roller follower type valvetrain is disclosed. The composition includes major amount of an oil of lubricating viscosity; one or more magnesium detergents in an amount to provide 100 to 1000 ppm of magnesium to the lubricating oil composition; 0.1 to 0.5 wt % of organic friction modifier; and d) optionally a viscosity modifier present at no more 0.5 wt %. The composition is substantially free of molybdenum friction modifier and has a total boron content ranging from 20 to 200 ppm.

Provided is a lubricating oil composition for a two-wheeled vehicle, containing a base oil, (A) a zinc dialkyldithiophosphate, and (B) a molybdenum-based friction modifier, in which a mass ratio (P / Mo) of a content of a phosphorus atom derived from the zinc dialkyldithiophosphate (A) to a content of a molybdenum atom derived from the molybdenum-based friction modifier (B) is 0.8 or more and less than 2.0, and a kinematic viscosity at 100° C. is 5.0 to 7.1 mm2 / s, the lubricating oil composition for a two-wheeled vehicle by which excellent fuel efficiency is achieved.