34 results about "Lithium 12-hydroxystearate" patented technology

The invention relates to a special lubricating grease composition for a steel wire rope. The composition comprises the following components in percentage by weight: 2.0-5.2% of lithium 12-hydroxystearate soap, 0.5-1.3% of lithium stearate soap, 53.5-76% of mineral base oil, 15.0-40.0% of extract oil, 1.3-6.3% of microcrystalline wax and 0.2-1.2% of diphenylamine. The lubricating grease provided by the invention has the characteristics that blended base oil containing high-viscosity extract oil is utilized to prepare specific-thickness semi-fluid lubricating grease for the steel wire rope, theadhesion and infiltration capability of the product are improved, and the problems of oil splashing, loss, atmospheric environment pollution and the like of the existing product are solved; and a microcrystalline wax additive is used for improving the water resistance and protective properties of the lubricating grease for the steel wire rope. The lubricating grease provided by the invention has dropping point larger than 165 DEG C, is free of volatile solvent, is convenient for coating, has low production cost and enhanced lubrication effects, and can effectively meet the internal and external lubrication and protection requirements of the steel wire rope during operation.

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 belongs to a composition of four-component lithium complex grease and a preparation method thereof. 12-lithium hydroxyl stearate, lithium azelaic acid or lithium sebacic acid, lithium boric acid and lithium salicylate are added into base oil. Four-component complex lithium prepared by controlling complex saponification temperature and time in a first step, alkali adding temperature in a second step, complex co-crystallization temperature and time and the highest temperature by a two-step saponification process has the advantages of high adhesion property, excellent high temperature leakage resistance, long high-temperature bearing service life, high comprehensive performance and capability of meeting the requirement of the lubricating of high-temperature environment equipment and high-temperature centralized pumping and lubricating. The lithium complex grease of the invention belongs to high-temperature grease of which the dropping point is not less than 260 DEG C and which has the prominent advantages of high adhesion property, excellent high temperature leakage resistance and long high-temperature bearing service life at the temperature of 160 DEG C. Compared with polyurea grease, the lithium complex grease cannot be hardened at a high temperature; and compared with the ordinary two-component or three-component complex lithium, the lithium complex grease has the advantages of high adhesion property, excellent high temperature leakage resistance and long high-temperature bearing service life.

The invention relates to an ultralow-temperature bearing lubricating grease composition and a preparation method thereof. The ultralow-temperature bearing lubricating grease composition comprises 10-20% of a thickener namely lithium 12-hydroxystearate-lithium stearate complex soap, 75-85% of base oil, 0.5-4.0% of an additive (a) namely arylamine and/or phenol antioxidant, 0.5-1.5% of an additive (b) namely a sulfonate rust inhibitor and 0.5-2% of an additive (c) namely a phosphorus antiwear additive. The ultralow-temperature bearing lubricating grease composition comprises the following steps: adding stearic acid into the thickener to react, and adding 12-hydroxystearic acid to react; and adding 1/2-2/3 of base oil into a reaction kettle, heating to 185-205 DEG C while stirring, adding the rest of base oil, cooling, adding the antioxidant, continuously stirring, naturally cooling to 70-80 DEG C, adding the rust inhibitor and antiwear additive, stirring uniformly, carrying out after-treatment, and canning the finished product. The lubricating grease has favorable oxidation stability; and the lubricating grease has ultralow starting/operating torque, and can ensure the long service life of the lubricating grease and bearing at the ultralow temperature of -60 DEG C.

The invention provides a lithium-based lubricating grease composition and a preparation method for the lithium-based lubricating grease composition. The lithium-based lubricating grease is prepared by saponifying special high-acid value mineral base oil. The preparation method comprises the following steps of putting the high-acid value mineral base oil into a kettle, adding 12-lithium hydroxyl-stearate soap and lithium stearate soap, and performing stirring and heating; when temperature rises to 210 to 220 DEG C, keeping the temperature, and performing stirring for 1 to 5 minutes; putting ordinary mineral base oil into the kettle, quickly cooling the materials, and adding an additive when the temperature reaches 140 to 150 DEG C; uniformly stirring the materials, and discharging the materials from the kettle; grinding the materials to obtain a finished product by using a three-roller grinding machine. According to the lubricating grease composition, conventional base oil resources in China are reasonably utilized instead of a naphthenic acid raw material, so that the production cost of the lubricating grease is remarkably lowered; the lubricating grease has high mechanical stability, colloid stability and lubricating performance, and the friction and abrasion conditions of mechanical equipment during operation can also be effectively improved; the produced lubricating grease can be used for lubricating automobiles, construction machinery and other mechanical equipment.

The invention discloses a preparation method of lithium 12-hydroxystearate. The method comprises the following steps: A. mixing 12-hydroxystearic acid with water, then heating up to 90-100 DEG C, andmaintaining the constant temperature for 40-60min to obtain a 12-hydroxystearic acid solution; B. mixing lithium hydroxide monohydrate with water to prepare a lithium hydroxide solution with a concentration of 2.5-10%, heating up to 80-90 DEG C, and maintaining the constant temperature for 15-30min; C. adding the lithium hydroxide solution into the 12-hydroxystearic acid solution, maintaining thetemperature to be 90 DEG C or above, carrying out a neutral reaction, and stirring for carrying out a reaction for 40-60min; D. after the reaction is finished, carrying out an emulsion reaction for 15-30min; E. after emulsification is finished, carrying out centrifugal dewatering, and carrying out elution on the product with hot water at the temperature of 90 DEG C or above until the pH value of the washing liquid is 8-9 so as to obtain a lithium 12-hydroxystearate wet material; F. drying the lithium 12-hydroxystearate wet material to obtain a dry material; G. crushing the dry material to obtain the finished product. The preparation method of the lithium 12-hydroxystearate has the advantages of simple process, , low cost and high yield, can effectively reduce free acid amount in the lithium 12-hydroxystearate finished product, greatly improves the purity of the finished product.

The invention discloses motor lubricating oil and a preparation method thereof. The motor lubricating oil is prepared from base oil, an anti-oxidant, dinonylnaphthalenesulfonic acid barium salt, trioctyl trimellitate, sodium alkyl naphthalene sulfonate, methyl silicone oil, polyethylene oxide and lithium 12-hydroxystearate, wherein the weight-average molecular weights of polyethylene oxide and sodium alkyl naphthalene sulfonate are 1000-3000 and 2000-4000 respectively. The motor lubricating oil is high in viscosity and kinematic viscosity index, and has a pH value of 6-8; the preparation method of the motor lubricating oil is simple, and raw materials are easy to obtain.

A hydroxy fatty acid salt having an average particle diameter of from 5 μm to 100 μm with a composition of from 0.3 wt % to 2 wt %, and more preferably, from 0.5 wt % to 2 wt % is added to a raw material powder in powder metallurgy, and worm molding is performed. In addition, a hydroxy fatty acid salt having an average particle diameter of 50 μm or less is attached on a mold in advance, and after that, the warm molding is performed. As a hydroxy fatty acid salt, 12-hydroxy lithium stearate is suitably used.

The invention relates to an anticorrosion and antirust reinforced concrete, and a microcirculation construction production method thereof, and belongs to the field of building concrete materials. The anticorrosion and antirust reinforced concrete for promoting the structure microcirculation and refinement of a concrete aggregate compound and enhancing the interface combination and the density comprises, by weight, 160 parts of Portland cement, 90 parts of broken stones, 60 parts of fine sands, 30 parts of calcium chloride, 12 parts of magnesium silicate, 10 parts of active calcium silicate, 8 parts of sorbose calcium, 9 parts of dialuminum hydrogen phosphate, 6 parts of strontium oxide, 8 parts of brucite powder, 18 parts of fly ash, 4 parts of white clay powder, 12 parts of silica micro-powder, 6 parts of polyvinyl alcohol, 15 parts of phosphogypsum, 5 parts of lithium 12-hydroxystearate, 6 parts of potassium tripolyphosphate, 5 parts of sodium allyl sulfonate, 2 parts of a water reducer, 2 parts of an expanding agent, 15 parts of barium hydroxide and a proper amount of water. The anticorrosion and antirust reinforced concrete has excellent impact, compression, tensile, crack, corrosion and rust resistance.

The invention provides a formula and a production process of lithium-based lubricating grease and relates to the technical field of lubricating grease. The production process comprises the steps of adequately mixing 1/3 of base oil with hydrogenated castor oil, lithium 12-hydroxystearate soap and lithium hydroxide soap, saponifying the mixture with equivalent lithium hydroxide to basically form a soap-oil sol state, adding 1/3 of base oil, further heating to the highest refining temperature so that the a soap-oil system in a grease preparation kettle is in a complete true solution state, cooling a drum cooler from a phase inversion temperature to 38-65 DEG C within several seconds by taking the rest 1/3 of base oil as snap-chilling mixed oil, and carrying out grinding, homogenization and degasification so as to obtain the lithium-based lubricating grease. The formula is scientific and reasonable; furthermore, by virtue of the scientific and simple production process, the degasification conversion rate can reach above 99.5%; and the produced products are all superior to general lithium-based lubricating grease products.

The invention discloses an FD bearing oil composition and a preparation method and applications thereof. The composition is composed of the following components in parts by weight: 6-8 parts of boehmite, 3-5 parts of chlorite, 1-3 parts of thulium, 1-2 parts of vinyl tri(beta-methoxy) triethoxy methylsilane, 1-2 parts of lithium 12-hydroxystearate and 80-87 parts of FD bearing oil. The prepared FD bearing oil composition can be formed into metal ceramic wearing layers with high intensity on the working surfaces of inner and outer rings of a bearing and the surface of a rolling element, so that the bearing is kept to move smoothly, the failure rate is reduced, the service life of the bearing is prolonged by more than five times, the consumption of lubricating material is saved, and the effect of environmental protection is achieved. The product raw material are easily available, the product is scientific in formula, simple in manufacture process, low in cost and good in performance. The FD bearing oil composition is used as high-speed spindle oil and sewing-machine oil in textile industry, and particularly applicable to lubricating spindle bearings of precision machine tools of which the operating temperature is more than 0 DEG C, and other high-speed sliding bearings lubricated by cycling, oil bath and oil fog, or precision rolling bearings.

The invention discloses modified fibrolite for a high-temperature-resistant polyvinyl chloride cable material and a preparing method thereof. The modified fibrolite is prepared from, by weight, 30-40 parts of fibrolite, 16-24 parts of flint clay, 10-15 parts of bauxite, 5-10 parts of lithopone, 5-10 parts of crystalline graphite powder, 4-8 parts of diphenylmethane bismaleimide, 6-12 parts of trioctyl trimellitate, 5-10 parts of dioctyl azelate, 2-4 parts of pentaerythritol monolaurate, 1-2 parts of lithium 12-hydroxystearate, 3-6 parts of poly-alpha-olefin, 1-2 parts of zinc dibutyl dithiocarbamate, 1-2 parts of diallyl bisphenol A and 4-8 parts of compound additive. The modified fibrolite has excellent high temperature resistance and the excellent mechanical performance; meanwhile, binding with an interface of a high polymer matrix is good, the heat stability, the wear resistance, the chemical corrosion resistance and the aging resistance of a composite material can be improved, and the service life of the material is prolonged.

The invention discloses motor lubricating oil and a preparation method thereof. The motor lubricating oil is prepared from base oil, an anti-oxidant, heptadecenyl imidazoline alkenyl succinate, tritolyl phosphate, alkyl naphthalene, methyl silicone oil, polyethylene oxide and lithium 12-hydroxystearate, wherein the weight-average molecular weights of polyethylene oxide and alkyl naphthalene are 1000-3000 and 2000-4000 respectively. The motor lubricating oil is high in viscosity and kinematic viscosity index, and has a pH value of 6-8; the preparation method of the motor lubricating oil is simple, and raw materials are easy to obtain.

The invention discloses anti-freezing lubricating oil, and belongs to the technical field of fine chemical engineering. The anti-freezing lubricating oil is prepared from the following raw materials in parts by weight: 80-100 parts of base oil, 4-5 parts of dodecyl acidic phosphite, 3-4 parts of unsaturated fatty acid, 2-3 parts of glyceryl acrylate, 3-8 parts of ethylene glycol, 1-3 parts of lithium 12-hydroxystearate, 0.1-2 parts of sodium dodecyl sulfate and 0.5-3 parts of oleamide. The lubricating oil special for an engine provided by the invention is stable in property, and the auxiliaryadditives can optimize the lubricating, anti-corrosion, anti-coagulation, anti-oxidation and pressure-resisting performance of the base oil, the cleaning performance is good, and oil sludge and carbondeposit can be reduced. Meanwhile, the anti-freezing lubricating oil can be used at a low temperature (higher than or equal to -30 DEG C).

The invention discloses a lubricating oil for motors and a preparation method thereof. The lubricating oil comprises a base oil, an antioxidant, dinonyl naphthalene barium sulfonate, tricresyl phosphate, alkylnaphthalene, silicone oil, polyethylene and lithium 12-hydroxystearate, wherein the polyethylene oxide has a weight average molecular weight of 1000-3000, and the alkyl naphthalene has weight average molecular weight of 2000-4000. The lubricating oil has excellent viscosity, kinematic viscosity index and pH value of 6-8; while the preparation method of the lubricating oil is simple; and the raw materials are easily available.

The invention relates to lubricating grease for underwater spindle noses of iron-making auger conveyors and a preparation method. The lubricating grease comprises base oil, densifiers, viscosity index improvers, extreme-pressure antiwear agents and antirust agents. The preparation method includes adding composite soap, namely the densifiers, and 45-55% of the base oil into a reaction kettle, stirring and heating to the temperature of 220-230 DEG C, keeping the constant temperature for 25 minutes, adding 10-20% of the base oil for cooling, continuing to stir, adding the residual base oil, stirring to cool the temperature to below 70 DEG C, adding additives, and stirring and mixing evenly, wherein the mass ratio of lithium 12-hydroxystearate to calcium 12-hydroxystearate to lithium octanedioic acid in the composite soap is 3:1:1. The lubricating grease prepared according to the preparation method has high dropping point, and friction and abrasion of lubricated portions are reduced during work under certain heavy load conditions; the lubricating grease has good waterproofing performance and good salt mist and rust resistance performance; the condensation point of the base oil is low, and a certain pumping performance of the lubricating grease is guaranteed; high-temperature loss of the lubricating grease is avoided, and extreme-pressure antiwear performance, salt mist and rust resistance performance, water-adding anti-shearing performance, pumping performance and the like of the lubricating grease are realized.

In the rolling device of the present invention, a grease composition is enclosed which contains a base oil having a kinematic viscosity of 15 to 80 mm²/s at 40° C. and, as a thickener, a mixture of lithium 12-hydroxystearate and a lithium fatty acid having a carbon number of 6 to 12, and has a dropping point of 190 to 240° C. and a yield stress of 1.2 to 5 kPa. Accordingly, the torque is reduced and the acoustic life is improved.