176results about How to "Good thermo-oxidative stability" patented technology

The invention provides a manual transmission lubricating oil composition. The manual transmission lubricating oil composition comprises (a) at least one mineral oil and/or synthetic oil with high viscosity index, (b) at least one viscosity index improving agent, (c) at least one pour point depressant, (d) at least one phosphorus-containing antiwear agent, (e) at least one sulfur-containing extreme pressure agent, (f) at least one friction improving agent, (g) at least one clean dispersion agent, (h) at least one antioxidant, (i) at least one antirust agent, (j) at least one metal deactivator and (k) at least one anti-foaming agent. The manual transmission lubricating oil composition provided by the invention meets the vehicle gear oil viscosity level of 75W/80 or 75W/85, has excellent high-low temperature performances, anticorrosion performance, antirust performance and shearing-resistance performance, especially has excellent synchronizer friction performance, can be used for a manual transmission with a synchronizer, and can be completely suitable for the improvement of oil product performance requirement brought about by technique improvement of the manual transmission at present.

A universal oil composition for gear contains mineral lubricating oil or synthetic lubricating oil or their mixture, at least one viscosity index improver and/or pour depressor, at least one S-contained extreme-pressure agent, at least one P-contained antiwear agent, phosphate-type multi-effect agent, oil agent (1-hydroxyethylene-1, 1-biphosphonate), and at least one metallic deactivator and/or antirust agent.

The invention provides lubricating oil compound and a preparation method thereof. The lubricating oil compound comprises 50-80wt% of poly alpha olefin, 19-39 wt% of ester oil, 0.1-3.0wt% of antioxidant, 0.01-0.5wt% of metal passivator, 0.1-3.0wt% of corrosion inhibitor, 0.5-5.0wt% of extreme pressure antiwear agent and 0.0005-0.05wt% defoaming agent. Compared with existing lubricating oil, the lubricating oil compound has the advantages that the poly alpha olefin in the lubricating oil is good in viscosity-temperature performance, low-temperature flowability and good in thermal oxidation stability; by the ester oil with good oxidation stability and high-temperature performance, high temperature oxidation performance of the lubricating oil compound can be increased; additives with good oxidation stability and extreme pressure antiwear performance are added to form a composite system, and the lubricating oil compound is good in extreme pressure lubricity and high-temperature oxidation stability under interaction of the additives.

The composite lubricating oil stabilizer includes the following components: ultraviolet ray absorbent and light stabilizer of hindered amine in the weight ratio of 1-5 and total content inside the composite lubricating oil stabilizer of 40-80 wt%; antioxidant selected from the shielding phenol, aromatic amine, phenolic ester, metal phosphate-sulfate and carbamate sulfide in 15-45 wt%; and phenyl phosphite as chelating agent in 3-18 wt%. The composite lubricating oil stabilizer of the present invention may be added into the base oil of hydrogenated lubricating oil in the amount of 0.01-2.0 wt% to improve the light stability of the hydrogenated lubricating oil obviously.

The invention provides air compressor oil which comprises the following components in parts by weight: 75-94 parts of synthetic hydrocarbon base oil, 5-20 parts of synthetic ester base oil and 1-5 parts of functional additive, wherein the functional additive comprises a purification dispersant, an antiwear agent, a metal deactivator, an antirust agent, an antioxidant, a pour point depressant, a demulsifying agent and an anti-foaming agent. The invention provides a preparation method of the air compressor oil. The preparation method comprises the step of mixing the synthetic hydrocarbon base oil, the synthetic ester base oil and the functional additive at the temperature of 60-80DEG C to obtain the air compressor oil. According to the air compressor oil provided by the invention, the synthetic oil is used as the base oil and the compound type functional additive is added, so that the air compressor oil provided by the invention has low oil sludge property. In addition, the air compressor oil provided by the invention also has the advantages of better thermal oxidation stability, low-temperature fluidity and higher viscosity index, and the use requirement of an air compressor is met.

The invention relates to a wide temperature range polyol ester lubricating oil composition suitable for an aircraft engine. The wide temperature range polyol ester lubricating oil composition suitable for the aircraft engine consists of the following components in percentage by weight: 90-94 percent of polyol ester synthetic base oil, 2-5 percent of an organic polysulfide extreme-pressure wear-resisting agent, 0.5-1 percent of an antioxidant, 1-3 percent of a detergent dispersant and 0.5-1 percent of a corrosion inhibitor. Compared with traditional aircraft lubricating oil, the wide temperature range polyol ester lubricating oil composition has the advantages of excellent low-temperature starting performance, favorable thermal oxidation stability, strong hydrolytic stability, excellent lubricating performance, biodegradability and the like, and can meet the requirements of a modern aircraft engine on long-period rigorous working condition running and wide temperature range use.

Rotary oil-jet air compressor lube oil and its production are disclosed. The formula consists of aromatic amine high-temperature antioxidant 0.1-0.6wt%, phenol antioxidant 0.1-1.0wt%, organic phosphate oil solution 0.1-0.6wt%, tinuvin fatty salt synergistic 0.01-0.1wt%, alkenyl ethylene dicarboxylic acid antirust agent VO.01-0.1wt% and base oil residue. It can be used at 100-200degree and has long antioxidant life.

The invention relates to an oil product of a petrochemical product, and in particular relates to rapid bright quenching oil and a preparation method thereof. The rapid bright quenching oil is prepared from the following components in percentage by weight: 75% of deeply refined mineral oil as basic oil, 6% of a brightener, 3.7% of a refrigerant, 8% of an antioxidant, 2.3% of a cake-preventing agent and 5% of animal and plant oil. The rapid bright quenching oil is low in cost and good in cooling property, brightness and thermal oxidation stability, and the surface of a quenched workpiece is bright and free of crack.

The invention provides an ashless antiwear oil film bearing lubricant composition, which comprises: (A) at least a highly refined mineral oil with high viscosity index; (B) at least an emulsifier; (C) at least an anti-foaming agent; (D) at least an ashless phosphorus-containing antiwear additive; (E) at least an anti-oxidant; and (F) at least a metal passivator. The above lubricant component has excellent demulsibility, filterability, anti-foaming property, air release property, abrasion resistance and oxidation resistance, passes through FAG FE-8 bearing wear experiments, SKFEMCOR bearing corrosion experiments and FLENDER anti-foaming experiments, and is suitable for lubricating various bearings and industrial gears, especially lubricating highspeed wire rod oil film bearings.

The invention discloses high-pressure anti-wear hydraulic oil, and belongs to the hydraulic oil field. The hydraulic oil comprises the following components in percentage by mass: 95-99% of base oil, 1.0%-1.5% of an extreme pressure anti-wear agent, 0.1-0.3% of a friction modifier; 0.4-1.0% of an antioxidant, 0.1-0.5% of an antirust agent, 0.1-0.5% of a metal deactivator, 0.02-0.1% of a detergent dispersant, 0.001-0.005% of an anti-foaming agent, and 0.1-0.5% of a demulsifying agent. Compared with the prior art, the hydraulic oil has the advantages of good viscosity-temperature performance, extreme pressure abrasion resistance, oxidation resistance stability, hydrolysis stability and thermal stability, and is not prone to aging and deterioration; the service life is prolonged, a friction pair can be normally lubricated under high-pressure and high-speed harsh conditions, and abrasion is reduced. The foam generated under the condition of violent mechanical stirring in the operation process can be quickly eliminated; air mixed in the oil can be released in a short time, and a static pressure can be accurately, sensitively and stably transmitted.

The invention provides heavy-load agricultural diesel engine special oil and a production method thereof, synthetic ester, II type base oil, a viscosity index improver, a diesel engine oil compound agent, a pour point reducer, an antifoaming agent, a friction modifier, a high antioxidant and other components are used, most excellent technical parameters are screened by orthogonal experiment method and component ratio and dosage to use as technical formula parameters of the heavy-load agricultural diesel engine special oil, the heavy-load agricultural diesel engine special oil meets specification requirements of high-grade diesel engine oil of the level of API CF-4 or above, and has excellent thermal oxidation stability and oil/water separation property. The method improves the thermal oxidation stability, lubricity and oil/water separation properties of oil products, shortens the time of oil-water separation, prolongs lubrication protection ability and the service life of the oil products, saves resources, and the heavy-load agricultural diesel engine special oil can completely meet the oil requirements of 25-80 p heavy-load agricultural diesel engines.

The invention discloses a preparation method of a composite antioxidant for better improving yellowing of a polymer caused by processing and long-term aging. The composite antioxidant adopts a main antioxidant, an auxiliary antioxidant, a dispersant, an organic pigment, an inorganic pigment as main raw materials for preparation; and the method comprises the following steps: mixing the main antioxidant and the auxiliary antioxidant, performing melting to form a molten liquid, adding the dispersant, performing uniform mixing, performing ultrasonic treatment under ultrasonic waves, adding the organic pigment powder and the inorganic pigment powder, performing uniform dispersion, and finally performing extrusion granulation by using a twin-screw extruder to obtain the composite antioxidant particles. According to the method provided by the invention, the molten liquid of the main and auxiliary antioxidants is compounded with the pigments, the function of the dispersant and the ultrasonic technology are combined, so that the pigment powder is more uniformly dispersed into the molten liquid of the antioxidants, and the content of the pigments in a single composite antioxidant particle is uniform; and the composite antioxidant is compounded with the polymer, so that a color complementary effect of the pigments on coloring of the polymer is improved, and yellowing of the polymer caused by the processing and the long-term aging is effectively improved.

The invention discloses a graphene lubricating oil additive and a preparation method thereof. The graphene lubricating oil additive is prepared from proper amounts of graphene, a hydrogenated styrene-diolefin copolymer, a borate and an oil-based solvent. The graphene lubricating oil additive disclosed by the invention solves the problem of corrosivity and selectivity in the traditional lubricating oil additive. The nano material additive technique is complex to operate, can discharge waste gas and pollutants, and can pollute the environment. The graphene lubricating oil additive can implement self-repair on the worn part, performs the functions of oil saving, wear resistance, noise reduction, power enhancement and the like, can be well dispersed in many types of lubricating oil base oil, has favorable oxidation stability, can exist stably for a long time, and is suitable for solving the problems of friction, wear and maintenance of different kinds of mechanical equipment under multiple working conditions.

The invention discloses an additive for wear resistance of lubricating oil, which comprises the following components in part by weight: 15 to 35 parts of antiwear agent, 6 to 29 parts of detergent dispersant and 12 to 26 parts of antioxidant preservative, wherein the antiwear agent consists of boric acid tributylester, phosphonic acid dibutyl ester, copper isooctoxyborate and cupric cyclohexoxylborate; the detergent dispersant consists of polybutene amine, polyisobutene carbamic acid ester and 2-aminopyridine; and the antioxidant preservative is boronized butanimide. The additive has wide use range, can be used in paraffin, naphthene and intermediate base oil, and also can be used in synthetic and semi-synthetic base oil. The additive has the advantages of effectively improving the wear resistance of the lubricating oil, strengthening the bearing capacity of the lubricating oil, making the lubricating oil have long service life, and having small dosage in the lubricating oil and simple and convenient preparation process.

The present invention relates to a synthetic compressor lubricating oil composition and a production method thereof. The synthetic compressor lubricating oil composition is prepared by mixing the following raw materials, by weight, 80-90 parts of a liquid A and 10-20 parts of a liquid B, wherein the liquid A is prepared by mixing one or a plurality of poly alpha-olefin synthetic base oil with different viscosities, and the liquid B is prepared by mixing the following additives, by weight, 5.0-15.0 parts of an ester, 0.05-2 parts of an antioxidant, 0.01-2 parts of a rust inhibitor, 0.01-0.5 part of a metal deactivator, 0.5-3 parts of an extreme pressure wear resistance agent, 0.005-0.05 part of anti-emulsification agent, and 0.003-0.01 part of an anti-foaming agent. According to the present invention, stability is high, an oil change period is long, compressor energy consumption can be substantially reduced, a service life of the compressor can be prolonged, significant economic and social benefits are provided, and environmental pollution can not be caused.

The invention provides a synthetic lubricating oil composition for an air compressor. The synthetic lubricating oil composition comprises 0.1 to 10wt% of tackifier, 2 to 7wt% of antioxygen, 0.05 to 1wt% of corrosion inhibitor, 1 to 8wt% of extreme pressure anti-wear agent, 0.0001 to 0.05wt% of antifoaming agent, and the balance of ester oil. The ester oil is provided with a structure shown as formula (I), wherein R1 and R3 are independently selected from alkyl with 5 to 20 carbon atoms; and R2 is the alkylene with 5 to 18 carbon atoms. The ester oil is provided with a special molecular structure, so that the synthetic lubricating oil composition for the air compressor is excellent in function of cleaning the coking material, and original oil sludge and coking matter of the compressor system can be cleaned and carried out; and the synthetic lubricating oil composition for the air compressor is higher in coking resistance. The invention also provides a preparation method of the synthetic lubricating oil composition for the air compressor.

The invention provides a refrigerating machine oil composition and its application, which comprises the following components based on the weight of the base oil: (1) 35-75wt% polyalphaolefin synthetic lubricating oil base oil; (2) 20-60wt% naphthene Base mineral lubricating oil base oil, the naphthenic mineral lubricating oil base oil is obtained by adopting "hydrodemetallization-hydrotreating-hydrogen decondensation-supplementary refining" high-pressure series all-hydrogen process technology; (3) 1-5 wt% alkylbenzene synthetic lubricant base oil; (4) additives. The refrigerating machine oil provided by the invention has good chemical stability with ammonia refrigerant (such as R717), and has a higher viscosity index, lower flocculation point and good thermal oxidation stability, and is especially suitable for ammonia refrigerant Refrigeration machine oil can also be used for refrigeration machine oil with fluorocarbons, hydrochlorofluorocarbons, and isobutane as refrigerants, which can achieve the purpose of reducing low-temperature viscosity, improving energy saving, and has excellent anti-wear performance.

The invention discloses a high-property modified nitrile butadiene rubber cable material used for ships. The cable material comprises the following raw materials in parts by weight: 20-40 parts of nitrile butadiene rubber, 5-10 parts of modified polyurethane composite material, 12-18 parts of styrene butadiene rubber, 5-15 parts of butadiene rubber, 1-2 parts of oleic acid, 0.5-1.5 parts of stearic acid, 1-2 parts of ammonium dichromate, 0.8-1.4 parts of dibenzothiazyl disulfide, 15-30 parts of kaolin, 8-12 parts of pottery clay powder, 42-55 parts of white carbon black, 5-10 parts of graphite, 1-3 parts of octyl-phenolic tackifying resin, 10-30 parts of ceramic fibers, 20-40 parts of modified active fibers, 0.5-1.5 parts of diisooctyl phthalate, 1-1.4 parts of aromatic hydrocarbon oil, 0.4-0.8 part of naphthenic hydrocarbon oil, 0.5-1.4 parts of antioxidant AT-215, 1-3 parts of ultraviolet absorber UV-531 and 1-2 parts of ultraviolet absorber TB75. The cable material has good thermal oxidative stability and excellent mechanical properties and is resistant to aging.

The invention discloses an environment-friendly and energy-saving hydraulic oil. The hydraulic oil comprises, by weight, 60 to 80 parts of a binding agent, 60-90 parts of medium oil, 0.1-0.5 part of an anti-aging agent, 0.1-0.5 part of a rust loosening agent, 0.1-0.5 part of a pour point depressant, 0.8-3 parts of a defoaming agent, 50-80 parts of a heat stabilizer, 50-80 parts of an expanding agent, 40-70 parts of a thickening agent, 50-90 parts of a vulcanizing agent, 0.1-0.9 part of an extreme pressure anti-wear agent and 0.8-3 parts of an activator. The invention also discloses a preparation method of the environment-friendly and energy-saving hydraulic oil. By utilizing the excellent thermal oxidation stability of an ionic liquid, the proper viscosity index is adjusted, the dissolvingcapacity is changed, and the anti-wear and anti-friction effects are good, and the energy-saving and environment-friendly hydraulic oil is prepared; and the ionic liquid with excellent thermal oxidation stability, high viscosity index, good dissolving capacity for inorganic salt and organic matter and good anti-wear and anti-friction effects is synthesized, the ionic liquid is used as a base liquid, and an additive with an excellent extreme pressure anti-wear effect is added to prepare the green, environment-friendly and energy-saving hydraulic oil.

The invention discloses a nylon 66 impregnated ingredient and a method of producing long glass fiber reinforced nylon 66 aggregate by utilizing the ingredient. The nylon 66 impregnated ingredient consists of the following components in parts by weight: 100 parts of nylon 66, 2-8 parts of a compatilizer, 0.3-1.5 parts of coupling agent, 0.3-1.5 parts of impregnating compound and 0.5-2 parts of antioxidant. The impregnated ingredient disclosed by the invention is low in melt viscosity, good in wettability with glass fiber, good in thermal oxidation change resistance and suitable for producing the long glass fiber reinforced nylon 66 aggregate by melting an impregnated glass fiber tow at a high speed under a temperature lower than 320 DEG C in a wire guide roller-combined impregnation mould head.

The invention discloses high-performance fully-synthetic wind power gear oil. The wind power gear oil comprises base oil and additives, wherein the base oil is polyol ester, and the additives comprisean antioxidant, a demulsifying agent, a pour point depressant, an antirust agent, an extreme-pressure anti-wear agent, a detergent dispersant, a defoaming agent and a metal deactivator. The inventionalso provides a preparation method of the wind power gear oil. The preparation method comprises the following steps: carrying out an esterification reaction on polyol monoester and fatty acid to synthesize polyol ester, blending the polyol ester to obtain the base oil, adding the additives into the base oil, and conducting mixing to obtain the environment-friendly fully-synthetic wind power gearoil. According to the invention, the wind power gear oil has good compatibility with various additives and can be widely applied to a wind power gear oil tank; the gear oil has very long service lifeeven under severe working conditions; the high viscosity index and good shear stability of the gear oil are guaranteed; the lubricating requirement of a gear box used in a very wide viscosity range ismet; pitting corrosion can be effectively avoided or inhibited; and normal operation of a large heavy-duty mechanical gear transmission device is guaranteed.

The invention provides super-high-pressure ethylene compressor oil, which contains the following components in percentage by weight: 93-99% of polyethers synthetic oil, 0.1-2% of antioxidant and 0-5% of anti-rusting agent. The super-high-pressure ethylene compressor oil provided by the invention takes the polyethers synthetic oil as the base oil and special additive compositions are added, so that the product can resist the dilution of ethylene gas and also can control the rise of viscosity under the extremely-high pressure to realize good lubrication; and the oil has good thermal oxidation stability and lubricity, low carbon deposition tendency and low biological toxin, so that the physical health of operators and safety and sanitation of mixing extremely little amount composition with polyethylene products can be guaranteed, and special requirements on the oil for a super-high-pressure compressor system can be satisfied.

The invention discloses polytetraurea lubricant grease. The polyurea lubricant grease disclosed by the invention is obtained through taking low-viscosity lubricating oil prepared from ester oil and poly alpha olefin as base oil, taking synthesized polytetraurea as a thickener and adding a friction modifier and an antioxidant. According to the ureido-based lubricant grease disclosed by the invention, the thickening effect is greatly increased without increasing the cost, the comprehensive performance is good, and the lubricant grease can be applied to machinery in the fields of electrical appliance industry, metallurgical industry, food industry, paper-making industry, automobile industry, airplane industry and the like.

The invention relates to a partial component of a combine harvester, and more particularly relates to a graphene lubricating oil additive. The graphene lubricating oil additive comprises the followingcomponents in percentages by weight: 0.1-1% of graphene, 1-10% of a hydrogenated styrene-diene copolymer, 1-10% of oleic acid, 10-25% of boric acid ester and 70-90% of an oil-based solvent. The additive provided by the invention has the beneficial effects that the process is simple, the production process is simplified, and the production costs are reduced.