88results about How to "High kinematic viscosity" patented technology

The invention is a coating apparatus including: a substrate-holding part that holds a substrate horizontally; a chemical nozzle that supplies a chemical to a central portion of the substrate horizontally held by the substrate-holding part; a rotation mechanism that causes the substrate-holding part to rotate in order to spread out the chemical on a surface of the substrate by a centrifugal force, for coating the whole surface with the chemical; a gas-flow-forming unit that forms a down flow of an atmospheric gas on the surface of the substrate horizontally held by the substrate-holding part; a gas-discharging unit that discharges an atmosphere around the substrate; and a gas nozzle that supplies a laminar-flow-forming gas to the surface of the substrate, the laminar-flow-forming gas having a coefficient of kinematic viscosity larger than that of the atmospheric gas; wherein the atmospheric gas or the laminar-flow-forming gas are supplied to the central portion of the substrate.

The invention belongs to the technical field of insulating oil for power transformers with high overload capacity, and particularly relates to high-overload transformer oil and a preparation process thereof. The high-overload transformer oil is prepared from natural ester insulating oil and mineral insulating oil according to the volume percentage of (40%-50%):(60%-43%). The preparation process comprises the following steps: firstly, heating the natural ester insulating oil to 80 to 95 DEG C under a vacuum stirring condition; then under a vacuum condition, adding the mineral insulating oil into the natural ester insulating oil, and carrying out mechanical stirring and then ultrasonic oscillation; finally, carrying out two-stage vacuum filtering treatment on treated transformer oil, wherein the closed-cup flash point of a treated oil product is greater than or equal to 155 DEG C. The transformer oil disclosed by the invention is high in physical, chemical and electrical properties, low in kinematic viscosity, high in flowability and long in service life; the transformer with high overload capacity is high in overload capacity; faults of the transformer are reduced, and the problem of 'load returning' is effectively solved; the safety stability of the transformer is improved; the high-overload transformer oil has a high popularization and application value.

The present invention discloses novel fibers for use as secondary reinforcement materials in cementitious composites, which fibers are effective in preventing cracking far better than prior art fibers. Also disclosed are methods of producing the fibers and methods for producing cementitious composite containing the fibers.

The invention provides butenedioic acid resin, a preparation method thereof, and preparation of a degradable micro-scale lubricant therewith. The butenedioic acid resin is characterized by being prepared from following raw materials: butenedioic acid or butenedioic acid anhydride and fatty alcohol, wherein the molar ratio of the butenedioic acid or the butenedioic acid anhydride to the fatty alcohol is 1:1.9-2. Raw materials for preparing aluminum-casted crystallizer demoulding oil include the butenedioic acid resin. The aluminum-casted crystallizer demoulding oil is stable, is uniform in dispersion and is low in kinematic viscosity.

The invention relates to lubricating grease for changing the anti-rust effect. The lubricating grease comprises lithium soap thickening agents, base oil, antioxidants, anti-rust agents and viscosifiers and solves the problems that steel and iron are easy to rust under special conditions, and thus equipment can not be used and the resources are wasted. The lubricating grease has the beneficial effect the anti-rust effect of the lubricating grease is improved through improving the kinematic viscosity of the base oil and adding the proper antioxidants, anti-rust agents and viscosifiers to the lubricating grease. Through the damp heat test and the salt spray test in the lubricating analysis evaluation, the anti-rust effect in the evaluation results is greatly improved through being compared with the anti-rust effect of the ordinary lubricating grease. After the actual use, the equipment can still maintain a good state under the influence of external oxygen, water and acid media.

The invention relates to the technical field of modified asphalt and particularly provides a modified asphalt master batch. The modified asphalt master batch is prepared from, by weight, 40-60 parts of EVA, 10-20 parts of extract oil of aromatic hydrocarbon, 5-10 parts of rubber powder, 5-10 parts of organic wax, 5-15 parts of polyethylene, 3-5 parts of stearic acid, 2-5 parts of plasticizer, 2-4 parts of nano-particle and 0.1-0.5 part of antioxidant. The invention further provides a preparing method and application of the modified asphalt master batch. According to the modified asphalt master batch, asphalt is modified by organically combining the EVA, the rubber powder, the organic wax, the nano-particles and other raw materials, the high-low temperature performance and stability of the asphalt can be remarkably improved, separation of the asphalt in the use process can be effectively relieved through the good compatibility with the asphalt, and the good modified effect is achieved; the production process is simple, use is convenient, and quick and large-scale production of modification of the asphalt can be achieved.

The invention relates to a slow release coated wax of an efficient slow release composite fertilizer. The slow release coated wax of an efficient slow release composite fertilizer is glistened particles, and is prepared through a reaction of main raw materials comprising 42-75wt% of refined wax, 15-50wt% of microcrystalline wax, 35-55wt% of beeswax, 18-33wt% of palm wax and 1-10wt% of Chinese insect wax, and substances comprising an additive, an assistant, a biodegradation promotion substance, an acidic mixture and an organic material at 95-105DEG C for 20-40min. The slow release coated wax of an efficient slow release composite fertilizer has the advantages of simple preparation, wide raw material sources, good toughness and strength, good slow release effect in soil, neutralization of alkaline soil, and no pollution to the environment.

The invention discloses high-performance punching oil used for a thick plate, belongs to the field of metal processing operating fluid, and particularly relates to operating fluid for metal stamping processing. The high-performance punching oil comprises, by mass, 60%-80% of refined mineral oil, 5%-10% of a sulfur-containing extreme pressure agent, 5%-15% of a macromolecule polymerization ester extreme pressure agent, 0.5%-5% of an antiwear agent and 5%-10% of an antirust agent. One of sulfide aliphatic acid ester and over-based sulfosalt or a mixture of the sulfide aliphatic acid ester and the over-based sulfosalt is selected as the sulfur-containing extreme pressure agent. Polyheptadecylimidazoline-di-isooctyl borate is selected as the macromolecule polymerization ester extreme pressure agent. According to the high-performance punching oil, under the synergistic effect of the macromolecule polymerization ester extreme pressure agent and the sulfur-containing extreme pressure agent, excellent lubricating performance and anti-corrosion performance can be given to the punching oil, and the high-performance punching requirements for the thick plate are met. Moreover, the rusting problem of punched products and the ecological environment problem are solved without chlorinated paraffin.

The invention discloses a biodiesel with low temperature liquidity and a preparation method of the biodiesel. The biodiesel with low temperature liquidity comprises 2.5-30 percent by volume of direct coal liquefaction hydro-upgraded modified full-fraction oil and 70-97.5 percent by volume of illegal cooling oil biodiesel. The preparation method of the biodiesel comprises the step: after mixing the illegal cooking oil biodiesel and the direct coal liquefaction hydro-upgraded modified full-fraction oil, and standing for 8-12 hours to obtain the biodiesel with low-temperature liquidity. According to the biodiesel with low temperature liquidity, the pour point, the cloud point, the flash point, the kinematic viscosity, the oxidation stability, the heat value, the density and the acid value of mixed oil are detected according to the GB_T20828-2007, and accord with relevant requirements of EN14214 and ASTMD6751 for the technical performance of the biodiesel through detection. Compared with the illegal cooking oil biodiesel, the biodiesel has the advantages that the cloud point is reduced by 1-8 DEG C, the pour point is reduced by 2-10 DEG C, namely, the low temperature liquidity is remarkably improved, and the preparation method is simple and effective.

The invention relates to a composite treatment method of radioactive waste oil. The method sequentially includes the steps that 1, at the room temperature, a thickening agent is added into the waste oil during stirring, and even stirring continues to obtain a first material; 2, an addition agent is added into the first material during stirring, and even stirring continues to obtain a second material; 3, a curing agent is added into the second material during stirring, and even stirring continues to obtain a cured product. The method can be completed at the room temperature and has good compatibility with different waste oils or waste liquids, the obtained cured body is low in oil penetration rate, has certain strength and is easy to recycle after scattering and good for transportation, andthe cured body is combustible, so that subsequent incineration treatment is convenient.

An immersion liquid for microscopy using water immersion objectives has a refractive index in the range from 1.25 to 1.4 and a kinematic viscosity of greater than 20 mm²/s at 20° C.

The invention relates to a preparation method of poly-alpha-olefin base oil. The method comprises the following steps: S1, catalyzing an oligomerization reaction of an alpha-olefin mixture for 3-8 hours by using a Cr-AlCl3/Al2O3 immobilized catalyst at a temperature of 50-120 DEG C under a pressure of 0.1-1.0 MPa and an alpha-olefin/solvent volume ratio of (1:0)-(1:1); and S2, after the reaction is stopped, filtering the catalyst, washing with distilled water, carrying out atmospheric distillation to remove the solvent, carrying out reduced pressure distillation to remove the unreacted alpha-olefin and part of the alpha-olefin dimer, and carrying out hydrogenation to obtain the poly-alpha-olefin base oil. The invention also relates to the poly-alpha-olefin base oil prepared by the method.The PAO base oil prepared by the method does not need to be mixed with low-viscosity PAO oil for PAO with a kinematic viscosity range of 30-40 mm<2>/s at 100 DEG C, so that the volatility of lubricating oil can be greatly reduced.

The invention relates to a long-acting wire rope hemp core grease. The long-acting wire rope hemp core grease comprises 13-17wt% of palm wax, 16-19wt% of microcrystalline wax, 15-19wt% of naphthenic high-viscosity oil, 24-28wt% of paraffinic high-viscosity oil, 1.6-4.6wt% of zinc dialkyl dithiophosphate, 1.4-4.4wt% of nonyldiphenylamine, 4.5-8.5wt% of vinylacetic acid, 8.5-12.5wt% of polyisobutylene and 0.1-1wt% of calcium sulfonate. Compared with hemp core greases in the prior art, the long-acting wire rope hemp core grease has the advantages of high dropping point, no flowing in hot weather, fast online solidification after rope immersion, no loss, energy saving, no pollution to environment, large kinematic viscosity data, good adhesiveness, and realization of good fluidity and no flowing of a grease film in the motion and compressed processes. Prominently, the property of traditional hemp core greases (including imported hemp core greases) is changed to become weakly alkaline (the free base value is not greater than 0.15, NaOH%), so oxidation is effectively inhibited, generated free acids are neutralized, SH/T0325 oxidation stability test and SH/T0331 corrosion test are extremely well passed, the safe service life of a wire rope is effectively prolonged, and use environment is purified.

The invention provides an engine oil blending combustion device and method for GPF aging of a gasoline direct injection engine in a cylinder. The device includes a nitrogen gas tank, a pressure-adjustable reducing valve, an engine oil tank, an engine oil filter, an electromagnetic valve, an engine oil flowmeter, a one-way valve, an even blending intensifying device, a gasoline flowmeter, a gasoline pump and a gasoline tank; the nitrogen gas tank, the pressure-adjustable reducing valve and the engine oil tank are sequentially connected in series through pipes, the engine oil tank is provided with a pressure-adjustable relief valve, and the nitrogen gas tank is combined with the pressure-adjustable reducing valve and the pressure-adjustable relief valve to form an air pressure passage; the engine oil tank, the engine oil filter, the electromagnetic valve, the engine oil flowmeter, the one-way valve and the even blending intensifying device are sequentially connected with one another in series to form an engine oil pipeline; the gasoline tank, the gasoline pump and the gasoline flowmeter are sequentially connected with one another in series to form a gasoline pipeline, and the tail end of the gasoline pipeline is connected with the even blending intensifying device. Even blending combustion of gasoline and engine oil in a GPF aging experiment of the gasoline direct injection engine in the cylinder is achieved, and the blending combustion proportion of the engine oil to the gasoline can be flexibly adjusted according to different work conditions of running of an engine.

The invention relates to the technical field of fuel oil, and in particular relates to a nitrated coal tar alcohol-containing fuel and a preparation method thereof. By proportioning raw oil, a catalyst, a nitric acid solution, an alcohol and urea, combining process parameters in process steps and controlling the adding sequence and time of various raw materials, the performance of raw oil can be accurately modified, then the kinematic viscosity of oil, the water mass percentage and the content of alcohol substances are improved, and the performance of the raw oil is further improved; and moreover, compared with pure alcohol and the conventional alcohol-containing fuels, the nitrated coal tar alcohol-containing fuel provided by the invention has superior kinematic viscosity, is lower in water content and less in smoke dust discharge after burning, and can be completely burnt to a greater extent, the combustion value of the fuel is improved, and the consumption of energy sources is reduced.

The invention provides a method for preparing biodiesel by using a biological enzyme. The method comprises the following steps of: (1) raw material mixing: uniformly mixing raw oil and glycerin into a solution A, mixing sec-butyl acetate and lipase into a solution B, and mixing the solution A and the solution B in an enzyme esterification reactor for further performing a complete esterification reaction and a complete ester exchange reaction; (2) product filtration: precisely filtering crude diesel generated by the esterification reaction, separating and recovering an enzyme from the crude diesel, centrifugally separating the crude diesel from which lipase is separated, and removing foreign residues; and (3) product purification: performing normal-pressure distillation on the centrifugally separated crude diesel, separating excessive sec-butyl acetate and water generated by reacting, and rectifying under a reduced pressure of 0.002MPa to obtain biodiesel and plant asphalt. The biodiesel prepared with the method has high kinematic viscosity, a high cetane number and a high grease transformation ratio during production.

The invention discloses a high-strength waterborne wood coating and a manufacturing method thereof. The high-strength waterborne wood coating is prepared by taking polyurethane acrylate grafted acrylate, starch grafted sodium acrylate, water-soluble alkali, aluminum borate whisker, silicon carbide powder, CF (carbon fiber), tackifier extracted from cornu gorais powder, blocked isocyanate, polyether-siloxane copolymer, and aqueous adhesion promoter as raw materials and deionized water as medium for sufficient reaction at 70-85 DEG C, wherein the tackifier is prepared through the steps of moisturizing, pelletizing, boiling, purifying and concentrating; the waterborne adhesion promoter is prepared through the steps of soaking, microorganism fragmentation, collagen releasing and activating, and concentrating. The high-strength waterborne wood coating has the technical advantages of being applicable to wood surface, waterborne, free from damage to wood, high in strength and wearing resistance, lubricant in surface and good in texture.

The invention mainly relates to the technical field of chemical industry and discloses a green and environment-friendly metal rust inhibitor. The green and environment-friendly metal rust inhibitor is prepared from the following raw materials: wool grease, oleic acid, carboxymethylcellulose sodium, polyvinyl alcohol, sodium hexametaphosphate, fatty alcohol polyoxyethylene ether, sulfamic acid, glycolic acid, L-sodium lactate and water. The green and environment-friendly metal rust inhibitor is green and environmental-friendly, is safe and healthy, has biodegradability and can be self-degraded in soil within 15 months; health of human bodies are not damaged in preparation and utilization processes and the rust inhibition period reaches 5.5 years so that the service life of metal is prolonged for 10.3 percent; a plurality of types of raw materials belong to a food grade and are safe and non-toxic; waste liquid generated after the green and environment-friendly metal rust inhibitor is used does not cause environment pollution and can be biologically degraded; the L-sodium lactate can increase the weather resistance of the rust inhibitor, the shelf life is prolonged and the economic income is improved by 12.7 percent; the rust inhibitor is convenient to use and can be directly wiped; stains on a metal surface can be removed, color and luster are increased and rusting is prevented so that the service life of the metal is prolonged.

The invention discloses an intelligent sneaker, a sales platform and method thereof. The intelligent sneaker comprises a piezoelectric unit, a low-power-consumption chip unit and an environment monitoring sensor, wherein the piezoelectric unit, the low-power-consumption chip unit and the environment monitoring sensor are embedded in a shoe sole; and geographic position information, piezoelectric information and environment information are sent to the sales platform of terminal equipment through a Bluetooth module. Through monitoring of the intelligent sneaker, various body index data are tracked in real time, and the current physical condition is accurately judged; the surrounding environment conditions are detected in real time; motivation of a virtual currency mode is generated through sports, so that the sports viscosity of a user is increased, and the continuously generated virtual currency is converted into directional purchasing power; virtual games stimulate the interest of sports, and the sports power is improved in various manners; and earnings are obtained while the sports initiative of the user is improved, thereby expanding the commodity audience side, and enhancing theuser experience and the marketing effect.

The invention discloses a high adhesion waterborne wood coating and a manufacturing method thereof. The waterborne wood coating takes waterborne acrylic resin, sodium silicate, water-soluble alkali, titanium dioxide powder, activated carbon powder, CNC cellulose nanocrystal, a tackifier extracted from goat horn, blocked isocyanate, a waterborne defoamer, and a waterborne adhesion promoter extracted from peach branches as raw materials, and takes deionized water as a medium to obtain a product through sufficient reaction at 70 DEG C to 85 DEG C; wherein the preparation process of the tackifierincludes infiltration, dicing, braising, purification and concentration; the preparation process of the waterborne adhesion promoter includes foaming, microbial wall breaking, collagen release and activation, and concentration. The high adhesion waterborne wood coating disclosed by the invention has the technical effects of specific application to the surface of woodware, waterborne property, non-injuring to wood, high adhesion, high wear resistance, self-lubricating surface and good texture.

The invention provides long-acting steel wire rope hemp core grease. The long-acting steel wire rope hemp core grease is prepared from the following components in parts by weight: 13 to 17 percent ofpalm wax, 16 to 19 percent of microcrystalline wax, 15 to 19 percent of naphthenic high-viscosity oil, 24 to 28 percent of paraffin-based high-viscosity oil, 1.6 to 4.6 percent of zinc dialkyl dithiophosphate, 1.4 to 4.4 percent of nonyldiphenylamine, 4.5 to 8.5 percent of ethylene acetic acid, 8.5 to 12.5 percent of polyisobutene and 0.1 to 1 percent of calcium sulfonate. The invention also provides a preparation method of the long-acting steel wire rope hemp core grease. The preparation method comprises the following steps: S1) putting naphthenic high-viscosity oil and paraffin-based high-viscosity oil into a reaction tank, heating to 130-140 DEG C, stirring for 30 minutes, and dehydrating to obtain a first prefabricated material; and S2) successively adding palm wax, microcrystalline wax, nonyldiphenylamine, ethylene acetic acid and polyisobutene into the first prefabricated material. The long-acting steel wire rope hemp core grease is high in dropping point, high in kinematic viscosity and capable of inhibiting free acidic bodies generated by oxidation and neutralization so that a steel wire rope is not liable to rust, and the service life of the steel wire rope can be effectively prolonged.