37results about How to "Good viscosity-temperature characteristics" patented technology

The invention discloses semisynthetic metal cutting fluid with trimethylolpropane oleate serving as base oil and a preparation method of the semisynthetic metal cutting fluid. The semisynthetic metal cutting fluid comprises the trimethylolpropane oleate, nonionic surfactants, anionic surfactants, antirust agents, cosolvents, extreme pressure agents, defoaming agents, bacteriacide and water. The preparation method of the semisynthetic metal cutting fluid includes: adding the extreme pressure agents into the base oil with uniform stirring so that solution A is obtained; then sequentially adding the defoaming agents, the antirust agents, the cosolvents and the bacteriacide into the water with uniform stirring so that solution B is obtained; and mixing the solution A with the solution B, and stirring while slowly dropwise adding the nonionic surfactants and the anionic surfactants so that a homogeneous and clarified micro-emulsion system, namely, the semisynthetic metal cutting fluid with the trimethylolpropane oleate serving as the base oil is obtained finally. The semisynthetic metal cutting fluid has good lubricity and biological degradability, has low-toxicity and low-harm to human bodies and the environment and is suitable for metal machining of most materials.

The invention relates to a synthesis method of poly alpha-olefin. The synthesis method comprises the following steps: carrying out reaction on a C8-C12 olefin monomer for a certain time under the action of a Ziegler-Natta catalyst system; after the reaction is finished, adding a quenching agent, finishing reaction and stopping stirring, extracting heat by virtue of external circulation, lowering a system temperature to room temperature, then adding an initiating agent, introducing BF3, controlling a polymerization temperature, reacting for 0.5-3 hours, and then carrying out aftertreatment, so that a poly alpha-olefin oligomerization mixture is obtained.

The invention discloses high-performance internal combustion engine oil capable of performing viscosity classification and a preparation method thereof. The internal combustion engine oil comprises synthesized base oil, high-temperature antioxidant, metal clearing agent, ash-free dispersing agent, anti-oxidation preservatives, nano multi-effect abradant, viscosity index improver, pour point depressant and oiliness agent. The high-performance internal combustion engine oil has the advantages that the internal combustion engine oil is outstanding in energy conservation and environment protection performance, excellent in wear resistance and friction resistance, good in fuel economy, excellent in low-temperature flowability, outstanding in high-temperature oxidation resistance and high in abrasion resistance; the influence of temperature on the viscosity change of the internal combustion engine oil is small, the internal combustion engine oil can flow under a low-temperature condition and keep proper viscosity in a high-temperature environment, and the internal combustion engine oil can reduce engine wear and prolong the service life of an engine; in addition, the internal combustion engine oil prepared by the method is high in extraction purity and cannot be easily oxidized and degraded into oil sludge and carbon deposition, and accordingly the oil change period of the internal combustion engine oil is long.

The invention provides a lubricating method for wind power generator, which comprises a lubricant, a wind power generator. Compound lubricant is adopted; the main lubricating parts of the wind power generator include a gear box, a generator bearing, a crab system bearing and gear, a hydraulic brake system and a min bearing. Compared with the ordinary mineral grease, the adopted compound lubricant has the advantages of excellent viscosity-temperature characteristics and little impact due to temperature change, is able to ensure easy startup under low temperature and no loss under high temperature, thereby providing sufficient lubrication for the friction parts. In addition, with excellent stability of thermal oxidation and little loss in vaporization, the lubricant can be used for a long time under rigid working condition and climatic situation. Especially, with high biodegradation rate, the compound lubricant can be widely promoted as it results in no pollution to the soil and water source.

The invention discloses a graphene-containing vegetable lubricant. The graphene-containing vegetable lubricant is prepared from the following raw materials: castor oil, modified castor oil, liquid graphene, trimethyl citrate, N,N-dimethylacetamide, modified nano cerium vanadium oxide, modified sodium carboxymethylcellulose, sucrose ester, an organic molybdenum compound, dodecyl selenium, 4-hydroxy-4-methyl-2-pentanone, benzotriazole, polymethyl methacrylate, 1-butyl-3-vinyl imidazole hexafluoroantimonate, polyurethane, cyclohexane and an organic anti-aging agent. The graphene-containing vegetable lubricant disclosed by the invention has the advantages that the castor oil and other additives are combined, an environment-friendly vegetable lubricant is prepared, the balance of properties is achieved by controlling the types and quantity of the additives, the vegetable lubricant has better oxidation resistance and self-cleaning capability and also has good lubricating property, viscosity-temperature characteristic, low temperature fluidity, low volatility, corrosion resistance, anti-foam property and anti-emulsifying property, and the overall performance is good.

A method for preparing pentaerythrite oleic ester used in cold-rolling oil belongs to the technical field of ester compound synthesis in organic chemistry. Pentaerythrite and oleinic acid are adopted as raw materials and p-toluenesulfonic acid or/and tributyl phosphate is/are adopted as catalyst; toluene or benzol is adopted as a water carrier, and esterification reaction lasting 4 to 6 hours is performed under the protection of high-purity nitrogen and under the temperature of 140 to 180 DEG C; after the reaction, continuous vacuumization lasting 40 to 60 mins is performed under the high-vacuum condition with a vacuity of 40 to 60Pa; and pentaerythrite oleic ester is obtained after the filtration of remains after vacuumizing. The pentaerythrite oleic ester prepared by adopting the method provided by the invention is specially used in cold-rolling oil, and has the advantages of excellent lubricity, temperature characteristics, annealing detergency and excellent mill housing cleanness.

The invention discloses graphene-inorganic nonmetallic fiber containing plant composite engine oil and a preparation method thereof. The preparation method comprises the following steps: adding graphene-inorganic nonmetallic fiber, liquid graphene, 1-octyl-3-methylimidazolium tetrafluoroborate into castor oil, stirring, then adding 2,2,4-trimethyl-1,3-pentanediol-isobutyric benzoate, didodecylmethyl tertiary amine, dimethyl glutarate, 12-hydroxystearic acid, a demulsifying agent, 1-3 parts of an antifreezing agent, an antiseptic and antirust agent, 2,6-di-tert-butyl-4-methylphenol, sasol wax,zinc dipentyl dithiocarbamate, triethanolamine oleate, oxidized polyethylene wax and fatty acid polyethylene glycol ester, and stirring to obtain the graphene-inorganic nonmetallic fiber containing plant composite engine oil. The graphene-inorganic nonmetallic fiber containing plant composite engine oil has good lubricity, viscosity-temperature properties, low-temperature fluidity and corrosion resistance and other characteristics, and has good comprehensive performance.

The invention relates to an automobile shock absorber oil suitable for low temperature environment. The automobile shock absorber oil is prepared from following materials: one or a mixture prepared from a plurality of compounds selected from polymethacrylate, poly(propylene-co-ethylene), and a carbon chain enhancer; one or a mixture prepared from a plurality of compounds selected from fatty alcohol-polyoxyethylene ether, chlorinated paraffin, and phosphorus pentoxide; one or a mixture prepared from a plurality of compounds selected from fatty alcohol ester of phenylethylene-maleic anhydride resin, alkenyl butanediamide acid salt, span, and tween; polyoxyethylene polyoxypropylene polyether, polyoxypropylene-polyoxyethylene glycerin, plant oil, and the balance base oil. The automobile shock absorber oil is capable of maintaining stability at low temperature, so that better working performance is obtained.

The invention discloses a synthetic method of lubricating oil base oil. The method comprises the following steps: simultaneously adding high-carbon olefin and ethylene into a high-pressure white steelpolymerization reaction kettle, adding a Ziegler-Natta catalyst into the reaction kettle, starting a reaction, and controlling conditions in a polymerization process; after the reaction is finished,pressing the material into a second reaction kettle through nitrogen (or cooling to room temperature in the same reaction kettle) while adding an AlCl3 catalyst into the material, and controlling theadding amount of the catalyst and the polymerization reaction conditions; and after the reaction is finished, emptying and depressurizing the reaction kettle, removing the residual catalyst from the obtained crude product through an alkali washing process, removing the unreacted high-carbon olefin through pressure reducing distillation, and carrying out structural characterization determination onthe product obtained after hydrogenation to determine branching degree, and carrying out performance test to determine indexes such as viscosity, viscosity index, pour point and the like of the product. According to the present invention, a complex raw material high-carbon olefin is adopted as a raw material, and the synthesized poly-alpha-olefin lubricating oil base oil has excellent viscosity-temperature performance and excellent low-temperature performance.

Belonging to the technical field of lubricating compositions characterized by mixed ester, the invention in particular relates to a base oil of cotton picker spindle lubricating grease. The base oil of the cotton picker spindle lubricating grease comprises the following components: esterified modified epoxy vegetable oil, neopentyl glycol dioleate, isooctyl oleate and trimethylolpropane trioleate.The base oil of cotton picker spindle lubricating grease provided by the invention has good viscosity-temperature characteristics, and can meet the lubrication and sealing requirements of a cotton picker spindle bearing in a working environment with large temperature difference between day and night.

The invention provides a straight-chain polyperfluoroether compound with a hydroxyl-containing terminal group and a preparation method thereof. The compound does not contain a branched chain structure, the molecular structure is neater, the compound is smoother, meanwhile, the compound has better viscosity-temperature characteristics, and the application range is wider. The straight-chain polyperfluoroether compound with the terminal group containing the hydroxyl group has a structural formula I shown in the specification; in the structural formula I, m is greater than or equal to 1, and n isgreater than or equal to 1.

The invention discloses powerful anti-friction energy-saving gasoline engine oil and a production technology thereof. The powerful anti-friction energy-saving gasoline engine oil is prepared form thefollowing raw materials: synthetic base oil, a metal detergent, an ashless dispersant, an anti-oxidation and anti-corrosion agent, a nano-scale multi-effect abrasive, a viscosity index improver and apour point depressant. The production technology comprises the following steps: putting the synthetic base oil in a reaction kettle, starting stirring, and heating; putting the pour point depressant,the viscosity index improver, the anti-oxidation and anti-corrosion agent, the metal detergent and the ashless dispersant in sequence, and uniformly stirring; then putting the nano-scale multi-effectabrasive, and continuing to stir at a certain rotating speed by keeping the original temperature; finally, pumping the stirred materials to a storage tank, and standing for 1 hour, thus obtaining a finished product of the powerful anti-friction energy-saving gasoline engine oil. According to the powerful anti-friction energy-saving gasoline engine oil and the production technology thereof, disclosed by the invention, the production conditions are easy to control; fuel produced by the invention is good in economy and long in oil draining period, and excellent anti-abrasion and anti-friction performance, high-temperature oxidation resistance and low-temperature fluidity are obtained.

The invention provides internal combustion engine oil for a crawler-type tank and a preparation method of the internal combustion engine oil, and belongs to the technical field of vehicle engine lubricating oil. The internal combustion engine oil disclosed by the invention is prepared from the following raw materials in parts by weight: 80.0 to 92.0 parts of base oil, 0.8 to 1.2 parts of a metal detergent, 2.3 to 5.5 parts of an ashless dispersant, 0.7 to 2.1 parts of zinc alkyl dithiophosphate, 0.1 to 0.54 part of a nanoscale multi-effect abrasive, 0.05 to 0.3 part of alkyl diphenylamine, 2.3 to 5.8 parts of a viscosity index improver and 0.3 to 0.8 part of a pour point depressant. The internal combustion engine oil obtained by the invention is a novel lubricating material prepared on the basis of a nano material, and is an internal combustion engine oil which is outstanding in friction resistance, good in fuel economy, long in oil change period, ultralow in tail gas emission and capable of effectively reducing friction loss of an engine.

The invention relates to hydraulic oil, in particular to coal-based anti-wear hydraulic oil and a preparation method thereof, and aims to solve the problems that in the prior art, the hydraulic oil is mainly prepared by adopting petroleum-based mineral oil as base oil and adding additives, wherein the performance improvement mainly lies in the updating of the types of the additives, and the improvement of the performance of the hydraulic oil is greatly limited. The invention provides coal-based anti-wear hydraulic oil. The coal-based anti-wear hydraulic oil is prepared from coal-based base oil A, coal-based base oil B, V-type base oil, an anti-wear agent, an antioxidant, an oiliness agent, an anti-rust agent and a composite anti-foaming agent; wherein the viscosity index of the coal-based base oil A is greater than 120, the kinematic viscosity at 40 DEG C is 40-50 mm2/s, the pour point is lower than -30 DEG C, the saturated hydrocarbon content is greater than or equal to 99%, and the sulfur content is less than or equal to 0.0005%; the viscosity index of the coal-based base oil B is greater than 120, the kinematic viscosity at 40 DEG C is 30-35 mm2/s, the pour point is lower than -30 DEG C, the saturated hydrocarbon content is greater than or equal to 99%, and the sulfur content is less than or equal to 0.0005%; and the V-type base oil is one or a mixture of two of modified rapeseed oil or alkyl naphthalene synthetic oil.