114 results about "Friction modifier" patented technology

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 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.

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.

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.

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.

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.

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 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.

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.

The booster additive concentrate can advantageously contain: (a) an antiwear mixture of two or more phosphite / phosphate compounds and one or more ether / sulphide compounds; (b) an ashless dispersant; (c) a calcium-containing detergent, such as an overbased calcium phenate; (d) >2 friction modifiers, at least one of which comprises a polyalkylene polyamine succinimide derivative; (e) optionally a corrosion inhibitor; and (f) a lubricating oil base stock. The booster additive concentrate can exhibit a specific content of B / Ca / P based on these additive components, and can contain minimal or substantially no additional antioxidants. A lubricant composition can be made from the booster additive concentrate and a fresh / used lubricating oil composition "diluent", which can rejuvenate the diluent. Such a lubricant composition can have advantageous anti-shudder durability (ASD) life and other friction properties. In particular, when used in a vehicle having a continuously variable transmission (CVT), such a concentrate / composition is able to provide excellent lubrication.

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.

An asbestos-free friction material composition and related brake pads for vehicles, comprising organic and / or inorganic and / or metallic fibers, at least a binder, at least a friction modifier or lubricant, at least a filler or abrasive, and at least soluble salts of barium and / or calcium and / or aluminum and / or silver in a proportion of between 0.5 and 10% by weight, of which barium carbonate, calcium hydroxide, aluminum triacetate, and silver acetate are preferred.