81results about How to "Improve viscosity index" patented technology

The invention discloses an automobile continuously variable transmission fluid and a preparation method thereof. The automobile continuously variable transmission fluid comprises the following components: 100 parts by weight of class III base oil, 1-3 parts by weight of antiwear agent, 5-15 parts by weight of viscosity index improver, 0-1 part by weight of pour point depressant, 0.5-2.5 parts by weight of alkaline earth clearing agent, 2-6 parts by weight of dispersant, 0.5-1 part by weight of antioxidant, 1-4 parts by weight of friction modifier and 0.01-0.05 part by weight of anti-foaming agent. According to the invention, the chosen additives are optimally combined together to obtain the CVTF, and the obtained CVTF has excellent comprehensive properties; the CVTF is excellent in viscosity index, oxidation stability, shear stability, wearing quality and cryogenic property, and more critically, large in torque, high in traction coefficient and high in transmission efficiency; and consequently, the use requirements of B-CVT and T-CVT can be met simultaneously.

The invention discloses antioxidant, anti-wear and antirust lubricating oil for an automobile gear. The lubricating oil is characterized by being prepared from the following raw materials: base oil, a clearing agent, a dispersing agent, a preservative, an extreme-pressure anti-wear agent, an oiliness agent, an antioxidant, a viscosity index improver, an antirust agent, a pour point depressant and an antifoaming agent, wherein in the base oil of the lubricating oil, the kinematic viscosity below 100 DEG C is 1.5-40mm<2>/s, the viscosity index is over 100, the pour point is below -25 DEG C, and the sulfur content is below 0.01% by mass. The lubricating oil for an automobile gear, disclosed by the invention, has the advantages of simple composition, low cost, relatively good viscosity index, high anti-wear property and long service life; the compatibility between the lubricating oil additive and the base oil is relatively good, and the lubricating oil is of relatively high stability; and compared with existing automobile lubricating oil, the automobile lubricating oil disclosed by the invention has high corrosion resistance, the preparation technology of the lubricating oil is simple, and the steps are simple and environment-friendly and easy to implement.

The invention provides low-temperature lubricating grease and a preparation method thereof. The low-temperature lubricating grease comprises mineral oil, synthesized oil, fatty acid soap, an antioxidant and an antirust agent. Compared with the prior art, the low-temperature lubricating grease is characterized in that semi-synthesized oil obtained by mixing III-type oil and ester oil and/or PAO (poly alpha olefin) oil is used as basic oil; the III-type oil has a high viscosity index and is high in high-temperature and low-temperature performance, oxidation stability, heat stability and evaporation performance; the ester oil and the PAO oil also have high viscosity indexes and are high in low-temperature performance; moreover, a mixture of lithium stearate and 12-hydroxy lithium stearate is used as a thickening agent for thickening the semi-synthesized oil, so that the low-temperature lubricating grease is high in low-temperature performance, and a used component can be normally lubricated under low temperature; the applicable temperature range is large; furthermore, the thickening agent is easy to synthesize.

The invention discloses a lubricating oil special for a motorcycle engine, and belongs to the technical field of lubricating oil. The lubricating oil is obtained through a reaction carried out on 80 parts to 90 parts of base oil, 2 parts to 5 parts of abrasion resistance agents, 5 parts to 10 parts of corrosion resistance agents, 2 parts to 5 parts of cleaning factors, 5 parts to 15 parts of antioxidant, 1 part to 3 parts of metal deactivator and 8 parts to 12 parts of viscosity modifier. The base oil is composed of 30 parts to 40 parts of PAO and 40 parts to 50 parts of naphthenic base oil. The cleaning factors are any one of metal-based sodium or metal-based calcium or metal-based magnesium. The invention further discloses a preparing method of the lubricating oil. According to the lubricating oil special for the motorcycle engine, the cost of the base oil is controlled, and the better viscosity index and the high abrasion resistance performance can be ensured at the same time; viscous black carbon mud particles wrapped on engine parts can be effectively removed through matched addition of auxiliaries, the service life of the engine is prolonged, the equipment maintenance cost is reduced, and the clean abrasion protection mode is provided for the motorcycle engine. The preparing method of the lubricating oil is simple in steps, environmentally friendly, and easy to implement.

A biodegradable lubricant composition containing a complex polyol ester having a polyfunctional alcohol residue and a saturated or unsaturated dicarboxylic acid residue having from about 9 to about 22 carbon atoms.

The invention provides high-temperature-resistant ground cross-linked acid liquor. The acid liquor comprises the following components in percentage by mass: 15-28 weight percent of acid, 0.4-1.0 weight percent of polyacrylamide polymer, 0.1-0.5 weight percent of aldehyde cross-linking agent, 0.05-0.25 weight percent of phenol cross-linking agent, 0.05-0.02 weight percent of crosslinking promoter, 0.5-2.0 weight percent of corrosion inhibitor, 0.5-2.0 weight percent of ferric ion stabilizer, 0.01-0.1 weight percent of ammonium persulfate and the balance of water, wherein the acid is calculated based on pure substances. The invention also provides a method for preparing the high-temperature-resistant ground cross-linked acid liquor. Industrial raw materials which are low in toxicity and low in price are taken as cross-linking agents and cross-linking promoter, the toxicity of the cross-linking agents can be reduced, the process for preparing the high-temperature-resistant ground cross-linked acid liquor is simple, further synthesis is not needed, the field operability is high, the cost is effectively reduced, and application of acid fracturing is further widened.

The invention provides a hydroprocessing catalyst and a preparation method of the hydroprocessing catalyst, and a preparation method of lubricant base oil. The hydroprocessing catalyst contains a silicon aluminum composite material carrier and active components loaded on the carrier, wherein the active components are Family VIII metallic elements, Family VIB metallic elements and phosphorus, an acid point index of the silicon aluminum composite material carrier is not lower than 80 and is the numerical value obtained by multiplying the ratio of Si-O-Al bond absorbance to Si-O-Si bond absorbance by 100, wherein the Si-O-Al bond absorbance refers to the high strength of the vibratory absorption peak of Si-O bond of Si-O-Al in an infrared absorption spectrum of the silicon aluminum compositematerial carrier, and the Si-O-Si bond absorbance refers to the high strength of the vibratory absorption peak of Si-O bond of Si-O-Si in the infrared absorption spectrum of the silicon aluminum composite material carrier. The hydroprocessing catalyst provided by the invention can obtain, at high yield, lubricant base oil having high viscosity index and low contents of sulfur, nitrogen and aromatic hydrocarbon.

The invention relates to a lubricating oil. The lubricating oil comprises, by weight, 4-4.5 parts of a dispersant, 2-3 parts of a viscosity modifier, 0.5-0.8 part of an anti-wear agent, 0.2-0.3 part of a wear reducer, 0.05-0.1 part of a detergent, and base oil, and the total weight part is 100. The effect of the compatibility of all modification components is far better than the superposed effect of individual modification components in affection of the performances of the base oil, so the wear resistance and the dispersion performance of the lubricating oil are remarkably improved.

The invention provides a high-temperature chain oil composition and a preparation method thereof. The high-temperature chain oil composition includes: (a) synthetic ester base oil; (b) alkoxy phosphate anti-wear reagent at extreme pressure; (c) oiliness agent; (d) viscosity index improver; (e) antioxygen; and (f) anticorrosive, wherein the (a) synthetic ester base oil is a mixture of dipentaerythritol ester and aromatic ester. The high-temperature chain oil composition is adapted to using at high temperature, has good high-temperature performance, has no carbon deposition residual working at high temperature for a long time, is without dripping, has good wear-resisting anti-attrition and corrosion resistant performances, and has low friction coefficient and small chain abrasion. Moreover, the high-temperature chain oil composition has low toxicity, is easy to decompose, and is environmentally friendly.

The invention belongs to the technical field of automobile transmission and discloses full-synthetic continuously variable transmission (CVT) transmission fluid as well as a preparation method and application thereof. The transmission fluid comprises the following components in parts by weight: 100 parts of type IV base oil, 0-20 parts of type V base oil, 0.5-2.4 parts of an anti-wear agent, 2-5 parts of viscosity index improvers, 1-3 parts of an alkaline-earth metal clearing agent, 2-6 parts of a dispersing agent, 0.3-0.8 part of an antioxidant and 1-3 parts of a friction modifier. The full-synthetic continuously variable transmission transmission fluid has excellent comprehensive performance, has excellent viscosity index, oxidation stability, shear stability, wear resistance, low-temperature resistance and high transmission efficiency, and can simultaneously meet strict service requirements of various CVTs.

The invention discloses a preparation method of novel two-dimensional material reinforced polyethylene glycol lubricating oil. The preparation method comprises the following steps: step I, adding Ti3AlC2 powder into an HF solution, performing the corrosion reaction, magnetically stirring for a plurality of time, then centrifugally washing, vacuum drying, and obtaining Ti3C2 powder; step II, mixingthe Ti3C3 powder in step I and an intercalating solvent, stirring, washing, drying, and obtaining the processed Ti3C2 powder; step III, dissolving the Ti3C2 powder processed in step II in the deionized water, ultrasonically processing, centrifuging, collecting supernatant, drying, and obtaining Ti3C2 two-dimensional nanosheets; and step IV, stirring and mixing the Ti3C2 two-dimensional nanosheetsobtained in the step III and polyethylene glycol, preparing different solutions of different concentrations, ultrasonically processing, and then performing the friction abrasion experiment. The preparation method has the advantages of excellent cooling performance, difficulty in combustion, low pollution, low cost and the like.

An automobile lubricating oil additive is composed of the following raw materials in parts by weight: 3 to 6 parts of phosphorodithioate, 2 to 4 parts of random polypropylene, 1.2 to 3 parts of oligomer of trimethyl hydrogen quinazoline, 4 to 6 parts of phenothiazine, 5 to 8 parts of phenyl-2-naphthylamine, 2 to 4 parts of methyl silicone oil, 3 to 5 parts of calcium oxide, 1 to 2 parts of succinate, 4 to 7 parts of mesembryanthemoidigenic acid, 3 to 6 parts of glycerin acrylate, 7 to 10 parts of lupeol palmitate, 5 to 8 parts of linolenic acid, 6 to 9 parts of coconut diethanolamide, 5 to 8 parts of inositol hexaphosphate, 2 to 4 parts of calcium chloride, 6 to 10 parts of polyacrylic acid, 4 to 7 parts of sodium dodecyl benzene sulfonate, 2 to 6 parts of tetrahydropalmatine, 3 to 5 parts of lupeol palmitate, 8 to 16 parts of benzyl alcohol, and 7 to 12 parts of sulfurized calcium alkyl phenate. The provided automobile lubricating oil additive has an improved viscosity index and a good lubricating performance, can effectively prevent lubricating oil from being oxidized or degraded, and prolongs the service life of lubricating oil.

The present invention discloses a lubricating oil base oil production method. According to the lubricating oil base oil production method of the present invention, a wax oil raw material and hydrogen gas are mixed and then sequentially pass through at least two hydrogenation reaction zones connected in series, wherein each hydrogenation reaction zone sequentially comprises a composite catalyst bed layer filled with a hydrodewaxing catalyst and a hydrocracking catalyst in a mixed manner and a hydrodewaxing catalyst bed layer according to the material flowing direction, and the reaction effluent obtained from the last hydrogenation reaction zone is subjected to separation and fractionation to obtain the lubricating oil base oil, the white oil and other products. With the method of the present invention, the temperature decrease during the hydrodewaxing process and the temperature increase during the hydrogenation process are subjected to reasonable combination utilization, such that the low freezing point lubricating oil base oil is produced while the viscosity index is increased, the hot spot temperature of the device is reduced, and the operation period is prolonged; and the cold hydrogen consumption or the heating furnace fuel gas loss is reduced, and the operating cost is saved.

The invention discloses a high-performance lubricant additive. The lubricant additive comprises the following substances in parts by weight: 3-5 parts of sodium dodecyl benzene sulfonate, 5-10 parts of boronized polyisobutene succinimide, 1-3 parts of calcium chloride, 2-6 parts of sulfurized alkylphenol calcium, 4-6 parts of calcium oxide, 1-5 parts of zinc dialkyl dithiophosphate, 0.5-2.6 parts of petroleum sulfonate, 1-5 parts of sulfurized isobutylene, 10-20 parts of paraffin, 5-11 parts of polyacrylic acid, and 20-35 parts of dimethyl silicon oil. The high-performance lubricant additive has the beneficial effects of not only being convenient to use and low in manufacture cost, but also having good oxidation resistance and abrasion resistance, having moderate foam, being capable of effectively resisting corrosion and rust, and better improving viscosity index so as to improve the quality of the lubricant.

The invention provides a coal directly liquefied oil composition and a preparation method thereof. The preparation method comprises following steps: step one, catalytically hydrogenating coal directlyliquefied oil to obtain a hydrogenated oil product; step two, cutting the hydrogenated oil product by steam to obtain a plurality of narrow distillate oils; and step three, blending the narrow distillate oils with poly(alpha-olefin) to obtain the coal directly liquefied oil composition. The viscosity index, flash point, and low temperature properties of coal directly liquefied oil are improved effectively.

The invention belongs to the extracting of fermenting products, in particular to a method for extracting diutan gum from a diutan gum fermenting liquid. The method comprises the following processing steps of pretreatment of fermenting liquid, primary extracting, primary centrifuging, secondary extracting, three times of diluting, and the like. The method has the advantages that the technical problems of low purity and viscosity of a diutan gum product prepared by the existing diutan gum post-extracting technology and the like are solved; compared with the existing product, the technology cycle is short, the control easy, the production cost is low, and the purity and viscosity of product are better.

The invention discloses a rustproof bearing lubricant additive. The rustproof bearing lubricant additive is prepared from 2,6-butylated hydroxytoluene, trimethylolpropane, zinc stearate, sodium borate, sodium nitrate, lauryl sodium sulfate, triethanolamine, alkenyl dibutene, pentaerythritol, glycerol, triphenyl phosphorothioate, alkali zinc dialkyl dithiophosphate, para aminobenzoic acid, cocinic glycol amide, laurylene succinic acid, macromolecular polyisobutene oil solution, tricresyl phosphate, long-chain alkyl sodium sulfate, calcium dodecylbenzene sulfonate, dialkyl zinc dithiophosphate, sorbide oleate, castor oil potash soap and a rustproof agent. The rustproof bearing lubricant additive can effectively prevent corrosion and rust and improve viscosity index well, is excellent in hydrophily and lipophilicity, improves rustproof and lubricating effects and prolongs the service life of bearings.

The invention discloses a lubricating oil composition for an integrated electric drive assembly speed reducer. The lubricating oil composition comprises the following components in percentage by weight: 80%-90% of base oil, 4%-12% of a viscosity index improver, 5.5%-8% of a composite additive, 0.1%-0.5% of a reinforcing agent and 0.3%-0.5% of a pour point depressant. The product provided by the invention has relatively low viscosity, relatively high viscosity index, excellent high-temperature oxidation resistance, extreme-pressure wear resistance, shearing stability, copper corrosion protection and electrochemical characteristics; the lubricating oil provides excellent protection for gears and bearings, has good compatibility with sealing materials and motors, provides excellent protectionand power output efficiency for integrated electric drive assembly reducers, and is especially suitable for lubrication of integrated electric drive transmissions of pure electric buses.

The invention discloses a lubricant for machine tool bearings and a preparation method of the lubricant, and belongs to the technical field of lubricants. The lubricant comprises the following components by weight: 30 to 50 parts of compound base oil, 10 to 20 parts of paraffin, 2 to 10 parts of modified graphene, 5 to 10 parts of polytetrafluoroethylene particles, 2 to 5 parts of tri-m-tolyl phosphate, 5 to 15 parts of zinc naphthenate, 1 to 3 parts of polyisobutene, and 8 to 12 parts of monoethanol amine. The lubricant has the advantages that the components are simple; the cost is low; the viscosity index is relatively high; the wear resistance performance is high; the service life is long. The preparation method has the advantages that the steps are simple; the environment is protected; the implementation is easy.

The invention relates to the field of low-temperature refrigeration, in particular to a low-temperature high-viscosity quick-frozen liquid composition. The low-temperature high-viscosity quick-frozenliquid composition is prepared by uniformly mixing the following components in percent by mass: 10-15% of sodium chloride, 5-8% of sodium propionate, 10-15% of glycerol, 10-15% of glucose syrup, 10-15% of mixed sugar syrup, 3-10% of nanoscale water soluble mineral salt and the balance of distilled water. The quick-frozen liquid composition is suitable for freezing various substances, in particularaquatic products, meat and products thereof. The aquatic products, met and products are cooled quickly and cross the maximum ice crystal generation belt, so that the frozen substances have a high quality freezing effect.