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34 results about "Ethyl stearate" patented technology

Ethyl stearate is a flavouring ingredient. Metabolite Description from Human Metabolome Database (HMDB) Ethyl octadecanoate is an octadecanoate ester obtained by formal condensation between the carboxy group of octadecanoic (stearic) acid and the hydroxy group of ethanol .

Method for manufacturing superfine flaky zinc powder with high corrosion resistance

The invention provides a method for manufacturing superfine flaky zinc powder with high corrosion resistance, and belongs to the technology of metallurgical waste utilization and metal powder material manufacturing. Raw zinc powder is commercially available waste sieved out in a battery zinc powder process, the raw zinc powder, industrial auxiliary agents and grinding media are placed into a horizontal type blade high-powered stirring grinder to be ground, the mass ratio of the grinding media to the raw zinc powder is 10:1-20:1, the mass of the industrial auxiliary agents is 1.0-3.0% of the mass of the raw zinc powder, the industrial auxiliary agents are one or two of hexadecanoic acid, dodecyl alcohol, ethyl stearate and silane coupling agents, the grinding media are bearing steel balls with the diameters being 5-7 millimeters, vacuum pumping is conducted firstly, and then inert gas is fed two times for protection; the ground flaky zinc powder is placed in a mixer, and mixing and passivation are conducted in air; the mixed flaky zinc powder is placed in a cyclone classifier and classified so as to obtain the superfine flaky zinc powder. The metallurgical waste can be used; the superfine flaky zinc powder has the high corrosion resistance, and production cost is reduced.
Owner:昆明海创兴科技有限公司

Method for preparing nano titanium dioxide coating on surface of base material made of transparent glass and polymer

InactiveCN104163575AControllable surface structureImprove photocatalytic activityCoatingsEthyl stearateStearic acid
The invention discloses a method for preparing a nano titanium dioxide coating on the surface of a base material made of transparent glass and polymer. The method is characterized by comprising the following steps: taking TiCl4 as the titanium source to obtain a precursor reaction fluid, using a rotation coating instrument to paint 10 to 20 [mu]L of the precursor reaction fluid on a substrate, which has been subjected to a pretreatment, so as to obtain a uniform liquid membrane on the substrate; covering a BOPP film on the substrate, subjecting the substrate to light radiation in an ultraviolet lamp cabinet, taking out the substrate after 5 to 10 minutes, removing the BOPP film, washing the substrate, and finally drying so as to obtain the transparent TiO2 surface coating. If an ethyl stearate solution is painted on the substrate surface before the precursor reaction liquid is spin-painted on the substrate, and the post operations are not changed, a porous transparent TiO2 coating will be formed on the substrate surface. The precursor reaction fluid is prepared by the following steps: taking TiCl4 as the titanium source, and then orderly adding TiCl4 and H2O2 into an acidic water solution of HNO3 under stirring. The provided TiO2 film is composed of pure anatase crystalline phase having a high photocatalytic activity, and the surface structure of the TiO2 film is controllable. The technology is simple, the used facilities are convenient and easily available, the film-forming speed is fast, the post-treatment is convenient, and the reaction mediums are nontoxic and harmless.
Owner:BEIJING UNIV OF CHEM TECH

Preparation technology of molybdenum-niobium alloy sputtering target material

The invention belongs to the technical field of metallurgy materials, and particularly relates to a preparation technology of a molybdenum-niobium alloy sputtering target material. The preparation technology comprises the steps of milling, molding, vacuum sintering, machining, and the like, wherein the milling process comprises the steps of putting molybdenum powder and columbium powder into a ball mill according to the principle that the ratio of molybdenum powder to columbium powder is (6 to 10) to 1; then, adding a process control agent and zirconia grinding balls; carrying out ball milling under argon protection; sieving; and separating to obtain molybdenum-niobium alloy composite powder; weights of the process control agent and the zirconia grinding balls are respectively (0.01 to 0.05) times and (5 to 20) times the total weight of molybdenum powder and columbium powder; and the process control agent is one or more of zinc stearate, palmitic acid, ethyl stearate, polyvinyl alcohol and stearic acid. According to the preparation technology, the obtained molybdenum-niobium alloy sputtering target material is a single phase structure, the structure is uniform and free of holes, the average grain size is 40 to 65 [mu]m, the density is 9.85 g/cm<3> or above, the performance is excellent, and the molybdenum-niobium alloy sputtering target material can be widely applied to the fields such as flat displays.
Owner:洛阳丰联科绑定技术有限公司

A kind of preparation method of biodiesel

The invention discloses a preparation method of biomass diesel. The preparation method comprises the following steps: adding rice husks, walnut shell powder, a catalyst and water into an autoclave, sealing the autoclave, heating the autoclave, adjusting the pressure in the autoclave, carrying out a reaction, and naturally cooling the obtained reaction product to room temperature in order to obtainan oil and water mixture; taking the oil and water mixture, stirring the oil and water mixture and diesel to achieve mixing, carrying out ultrasonic treatment, introducing nano-bubbles to the obtained mixed solution in the ultrasonic process, and carrying out standing layering to separate oil and water; and taking the separated oil, adding the oil into a spherical stainless steel container, thenadding 1,2,3-trimethylcyclopentane, ethyl stearate, nitroethane and diphenyl urea, sealing the spherical stainless steel container, arranging the sealed container on a four-axis grinder, and turning on the four-axis grinder to drive the spherical stainless steel container to rotate randomly in order to obtain the biomass diesel. The biomass diesel oil prepared in the invention has the advantages of high calorific value, high cetane number, small acid value and good stability, and the emission of harmful gases (CO, HC, NO) after combustion is decreased.
Owner:李祥
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