20results about How to "Reduce oxidation reaction" patented technology

The invention relates to the technical field of intelligent materials, and discloses a p-MXene conductive ink and BC reinforced polymer composite film and a preparation method and application thereof.The composite film comprises MXene and bacterial cellulose, the surface of the MXene is coated with waterborne polydopamine, waterborne polyurethane is embedded in the bacterial cellulose, and the surface of the MXene is coated with waterborne polyurethane; hydroxyl groups in the water-based polydopamine and amino groups in the water-based polyurethane form hydrogen bonds to connect the MXene with the bacterial cellulose. The composite film obtained by the invention has excellent mechanical properties and electrical properties, and also has comprehensive properties such as electromagnetic shielding and stress-strain sensing.

The invention relates to the field of tea beverages, in particular to a litsea coreana beverage and a preparation method thereof.The litsea coreana beverage is composed of litsea coreana soup, baking soda, vitamins and water, the sugar degree of the litsea coreana beverage is 0.04-0.17%, and the pH value of the litsea coreana beverage is 5.5-6.5. The problems that an existing hawk tea beverage lacks the characteristic flavor of hawk tea and contains many additives can be solved.

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The invention relates to the technical field of precious metal alloy material manufacturing, in particular to a process for hardening treatment of gold through micro-nano metal powder, which comprises the steps of blank charging, smelting, vacuum ingot casting, surface cleaning, rolling stretching and age hardening, product surface treatment, product welding and the like. The method has the advantages that in the aspect of material selection, the micro-nano metal powder, such as titanium powder and cobalt powder, is diversified and is small in adding amount, various strengthening mechanisms can be provided, and the economical efficiency is guaranteed. The smelting process is accurate, good vacuum and temperature control is achieved, and stirring is uniform after micro-nano metal powder is added. And rapidly solidifying the cast ingot by using a water-cooling copper mold, treating the surface by using aqua regia and the like, and drying. Midway annealing can be executed through rolling and stretching, and the process is flexible. Product manufacturing processes are diversified, and surface treatment includes polishing, electroplating, coloring and the like. Advanced modes such as laser are adopted for welding to avoid hardness reduction. According to the process, the gold hardening treatment effect and quality are improved from multiple aspects, different requirements are met, and wide application prospects are achieved.

The invention relates to the technical field of heating paste production, in particular to heating paste and a preparation process thereof. The invention discloses a ginger root soap, which is prepared from the following raw materials in parts by weight: 55 to 65 parts of water, 5 to 10 parts of glycerol, 3 to 8 parts of propylene glycol, 2 to 4 parts of ginger root extract phospholipid nanoparticles, 2 to 4 parts of cinnamon extract, 1 to 3 parts of polyethylene glycol, 2 to 5 parts of PEG-40 hydrogenated castor oil, 2 to 5 parts of hydrogenated polyisobutene, 0.5 to 1.5 parts of carbomer, 0.5 to 1 part of triethanolamine and 0.5 to 1 part of phenoxyethanol. The composition is prepared from the following components in parts by weight: 0.5 to 1.5 parts of chitosan, 0.1 to 0.5 part of essence, 0.1 to 0.5 part of vanillyl butyl ether, 0.5 to 1 part of ethylhexylglycerin and 0.5 to 1 part of pepper seed oil. The ginger root extract is subjected to enzymolysis through protease, release of active ingredients such as gingerol is promoted, and the heating performance of the heating paste is enhanced; and the phospholipid nano-load enzymolysis ginger root extract is utilized to reduce the oxidation of gingerol and other components and maintain the heating effect.

This invention discloses a method for increasing shale gas production from multi-stage fracturing shale formations. First, water containing water-absorbing resin is intermittently injected into the shale gas well, impacting the shale layer and creating multiple fractures, forming a primary fracturing process. Next, liquid nitrogen and sodium particles are injected into the shale gas well. The resin, already saturated with water, remains within the fractures. At this point, the liquid nitrogen cools the shale layer below its freezing point, causing the saturated resin to freeze and rapidly expand, forming a secondary fracturing process. Then, as the injected liquid nitrogen continues to vaporize, it further freezes the water and water-absorbing resin adsorbed by the shale, forming a tertiary fracturing process. When the temperature of the shale layer exceeds its freezing point, the expanded ice on the water-absorbing resin melts into water. At this point, the sodium particles react with the water, releasing a large amount of heat, causing the shale layer temperature to rise rapidly, creating a thermal shock to the low-temperature shale layer, forming a quaternary fracturing process. This completes the multi-stage fracturing process of the shale layer, effectively improving the extraction efficiency of shale gas.

The invention discloses a continuous treatment system and method for low-temperature small cresol in coal gasification, and relates to the technical field of treatment systems, and the continuous treatment system comprises an alkali washing unit, an oxidation deodorization unit, a decoloration deodorization unit, an anti-oxidation unit, a rectification unit and an improvement unit. According to the continuous treatment system and method for the medium-low-temperature small cresol in coal gasification, through cooperative arrangement of the alkali washing unit, the oxidation deodorization unit, the decoloration and deodorization unit, the anti-oxidation unit, the rectification unit and the improvement unit, the effects of desulfurization, denitrification, decoloration, deodorization, organic matter removal and anti-oxidation on the medium-low-temperature small cresol in coal gasification can be achieved; the quality of phenol, o-cresol, m-cresol, p-cresol and xylenol products separated from medium and low temperature small cresol is greatly improved, the product quality is ensured, meanwhile, the stability of the products in the coal gasification medium and low temperature small cresol refining process is changed, and the oxidation resistance is improved.

The utility model provides a kind of double-chamber double-pressurization quantitative furnace, including lifting furnace frame, lifting furnace frame top surface is connected with furnace body, furnace body includes main furnace chamber and quantitative chamber, and main furnace chamber and quantitative chamber are communicated by liquid inlet valve between;Quantitative chamber top opening is connected with quantitative chamber cover, quantitative chamber cover is connected with vacuum pump and delivery pipe, the delivery pipe is equipped with liquid outlet control valve, and liquid outlet control valve controls delivery pipe opening or closing;Quantitative chamber is pumped by vacuum pump or pressurization, and delivery pipe sends out aluminium liquid from quantitative chamber.When quantitative chamber is pumped by vacuum pump, aluminium liquid flows from main furnace chamber to quantitative chamber by liquid inlet valve;When quantitative chamber is pressurized by vacuum pump, aluminium liquid in quantitative chamber is sent out from delivery pipe.The utility model sets up main furnace chamber and quantitative chamber, realizes fast and accurate soup by controlling vacuum pump forward and reverse, satisfies high frequency, mass production demand, sets up chute as tubular, reduces aluminium liquid and air contact, reduces oxidation reaction, improves product quality.

The invention relates to an automotive anti-aging recycled polypropylene composite material with good appearance and a preparation method thereof, and the automotive anti-aging recycled polypropylene composite material with good appearance is prepared from the following components in percentage by weight: 10%-90% of a recycled polypropylene mixture, 5%-70% of polypropylene, 1%-25% of a toughening agent, 1%-22% of a filler, 0.2%-0.5% of a weather-proof agent, 0.1%-0.8% of an antioxidant and 0.1%-0.2% of a long-acting antioxidant, 0.1%-1.5% of modified epoxy resin, 0.1%-1.0% of metal deactivator and 0.1%-0.25% of metal carbonate hydrate. The automotive anti-aging recycled polypropylene composite material with good appearance has good heat aging resistance and light aging resistance, has no bad phenomena such as pocking marks, bumps and the like, and meets the use requirements of automobiles.

The invention discloses a high-conversion-rate solar cell and a preparation method and application thereof. According to the invention, a layer of silicon carbide film is plated on the surface subjected to phosphorus doping after laser heavy doping, so that a PN junction is not damaged, meanwhile, a good passivation effect on a silicon wafer is achieved, and the conversion efficiency is improved. The silicon carbide layer is formed on the surface of the silicon wafer, so that the high-temperature resistance and the mechanical property of the surface of the silicon wafer are enhanced, and the service life of the silicon wafer is prolonged; the corrosion resistance of the surface of the silicon wafer is improved, and the stability of the silicon wafer in a severe environment is enhanced; the oxidation reaction on the surface of the silicon wafer is reduced, and the performance reduction caused by oxidation is avoided.

This invention relates to the field of comprehensive utilization technology of iron and steel smelting resources, specifically to a method for the direct recycling and utilization of iron-rich red mud in converter steelmaking. The method includes the following steps: Step 1: Retaining slag, including MgO, in the converter for slag splashing and furnace protection; Step 2: Adding fine-grained limestone to the converter; Step 3: Adding iron-rich red mud to the converter, and shaking the converter 2-3 times after the mud has been added; Step 4: Verticalizing the converter and blowing nitrogen into it at least once using a top-blowing method, with each blowing lasting 3-5 seconds and an interval of 10 seconds between each blowing; Step 5: Adding scrap steel to the converter, waiting 0-5 minutes, then adding molten iron and starting the blowing process. This invention directly applies iron-rich red mud to the converter steelmaking process, achieving dephosphorization of molten iron with high phosphorus content without the use of flux.

The invention provides a whitening type composite modifier as well as a preparation method and application thereof, and belongs to the technical field of inorganic material modification. The whitening type composite modifier provided by the invention is prepared from the following preparation raw materials in parts by mass: 55 to 65 parts of titanium dioxide, 2 to 5 parts of a fluorescent whitening agent, 15 to 25 parts of an aluminate coupling agent, 5 to 10 parts of a titanate coupling agent, 10 to 20 parts of stearic acid, 2 to 5 parts of a dispersing agent and 1 to 2 parts of an antioxidant. The whitening type composite modifier can be applied to modification of various inorganic powder, the whiteness of the inorganic powder treated by the whitening type composite modifier is obviously improved, and the dispersity and the stability are obviously improved.

The utility model discloses a kind of crude tin smelting heat preservation devices, it includes: cover body, to cover container to cooperate container to form heat preservation space, the inner side edge of the cover body is equipped with the sealing strip of sealing container mouth, the top side of the cover body is equipped with sliding hole;Reference ruler rod, the reference ruler rod is vertically fixed in the top side of the cover body and is arranged close to the sliding hole;Floating ball liquid level indicating component, the floating ball liquid level indicating component sliding connection the sliding hole, the floating ball liquid level indicating component is based on the up-and-down floating of container interior liquid, the floating ball liquid level indicating component cooperates the reference ruler rod and indicates container interior liquid level information, the utility model structure is simple, use is safe and convenient, can monitor the liquid level state of container interior metal liquid in real time, reduce uncovering heat loss.

The utility model relates to rare earth hydrogen storage alloy or quick -setting neodymium iron boron alloy smelting auxiliary equipment technical field, specific, relate to a kind of rare earth metal powder explosion -proof dust collecting device, including shell, filter bag chamber, backflush mechanism, dust-containing gas inlet, purified gas outlet, still include inert gas supply gas path, explosion suppressor, explosion vent. Nitrogen gas path is introduced on the one hand reduces the oxygen content in dust collecting device, makes oxygen concentration reduce, reduces the oxidation reaction of rare earth metal, reduces the generation of heat. On the other hand, nitrogen in nitrogen gas path low pressure gas path is obtained by high-pressure liquid nitrogen throttling pressure reduction, temperature is lower, it is favorable to reduce the temperature in dust collecting device. The introduction of nitrogen gas path greatly reduces the explosion risk, this is the conventional working process. By introducing explosion suppressor, explosion vent, cooling can be carried out when temperature is too high and pressure relief after explosion, to slow down the progress of explosion and protect the entire device after explosion.

The present invention belongs to the technical field of Chinese patent medicines, and specifically relates to a postpartum rehabilitation granule and a preparation process thereof. The present invention prepares a tartaric acid modified gelatin, and adds it as an auxiliary material in the preparation process of the postpartum rehabilitation granule. The present invention finds that the tartaric acid modified gelatin and the Chinese medicine components are decocted together before the first decoction, and the tartaric acid modified gelatin can effectively improve the retention rate and stability of various components in the process, and finally improve the extraction effect of the medicinal material and the stability of the product.

The utility model relates to the technical field of workpiece spraying, and discloses a surface cooling device for a thermal spraying workpiece, which comprises a thermal spraying gun body, the top end of the thermal spraying gun body is fixedly connected with mounting blocks, one side of each mounting block is fixedly connected with a two-side inserting assembly, the interiors of the two mounting blocks are connected with supporting rods in an inserting manner, and the supporting rods are fixedly connected with the two-side inserting assembly. The top end of the supporting rod is fixedly connected with a cooling assembly. According to the surface cooling device for the thermal spraying workpiece, through the arrangement of the cooling assembly, when the surface cooling device is used, a semiconductor chilling plate is started, the semiconductor chilling plate cools gas in a circulation pipe, a draught fan is started, air blown out by the draught fan passes through the interior of the circulation pipe and becomes cold air, and the cold air is blown out from one end of the circulation pipe to cool the sprayed workpiece; the surface temperature of a workpiece can be rapidly reduced, so that continuous spraying is achieved, the production efficiency is improved, meanwhile, oxidation reaction can be reduced, and the quality of a coating is improved.

The invention relates to the field of vegetable lubricating oil, and particularly discloses anti-yellowing palm oil for lubrication and dispersion and a preparation method of the anti-yellowing palm oil. The anti-yellowing palm oil for lubrication and dispersion comprises the following raw materials in parts by weight: 50-60 parts of palm oil, 4-8 parts of graphite-phase carbon nitride, 2-6 parts of an antioxidant, 20-30 parts of a fish oil protective agent and 3-7 parts of modified talcum powder, the antioxidant comprises phytic acid, gallnut tannic acid and tea polyphenol palmitate in a mass ratio of 1: (0.1-0.3): (0.2-0.4). The anti-yellowing palm oil disclosed by the invention has relatively high resistance to ultraviolet aging, high high-temperature resistance and large adhesive force with a substrate, and has relatively high yellowing resistance, wear reduction, wear resistance and high-temperature wear resistance.

The invention discloses a fire coal quantitative conveying device for a coal-fired power plant, and belongs to the technical field of coal-fired power plants. The device comprises a support, a conveying mechanism is installed at the top end of the support, a protective shell is fixedly installed at the top end of the support, a fire extinguishing assembly is fixedly installed at the top end of the protective shell, and a cooling assembly is fixedly installed on the side wall of the protective shell. By arranging the fireproof assembly, in the process that a first hydraulic push rod drives a pressing plate to conduct reciprocating compaction, a first connecting plate can be driven to conduct synchronous movement, external air is continuously guided into a cavity through the pressure intensity difference generated by sealing sliding between a piston plate and a sealing box, stable air flow is formed, and then the stable air flow is exhausted along an exhaust hole; in the process, heat generated by the friction contact surface of the protective shell and the fire coal is continuously exchanged, so that cooling is performed, fire caused by continuous friction between the fire coal and the protective shell and over-high temperature is avoided, the effect of preventing spontaneous combustion of the fire coal is further achieved, and the safety of the device is improved.

The invention relates to the technical field of coke production assistants, in particular to a coke passivator which is composed of the following components: 50-60 parts of a boron compound; 3-5 parts of silica gel; 2-4 parts of activated carbon; 20 to 30 parts of silicon dioxide; 10 to 20 parts of a binder; and 1 part of water. The preparation method comprises the following steps: mixing a boron compound, silica gel, activated carbon, silicon dioxide, a binder and water according to a ratio, stirring the mixture for 1-2 hours at normal temperature to fully and uniformly mix, and filtering or centrifugally separating to obtain the coke passivator. The passivator is placed in a vacuum drying box, vacuum drying is conducted for 24-48 hours at the temperature of 80-100 DEG C, the coke passivator is smashed or ground after drying, and the coke passivator with the needed particle size is obtained. The method has the beneficial effects of reducing the coke activity and improving the heat intensity, thereby reducing the fuel ratio of the blast furnace, reducing the material collapse frequency of the blast furnace, realizing smooth operation of the blast furnace and improving the use effect and the economic benefit of the coke.

The application belongs to the technical field of soybean phospholipid, and particularly relates to an enzymatic soybean lecithin with whitening and anti-aging effects, a preparation method and application thereof. The preparation method comprises the following steps: (1) taking soybean powder phospholipid, adding solution A, stirring, centrifuging, and obtaining a precipitate; (2) adding anhydrous ethanol to the precipitate, standing, concentrating the supernatant, and obtaining a concentrated solution; (3) adding a composite enzyme and a buffer solution to the concentrated solution for enzymolysis, drying, and obtaining crude phospholipid; (4) eluting the crude phospholipid through a silica gel-aluminum oxide column, collecting and concentrating the eluent, and drying, to obtain the enzymatic soybean lecithin; wherein the solution A in step (1) is a mixed solution of acetone, methanol and a citric acid aqueous solution. The prepared enzymatic soybean lecithin has high purity, good activity and high hydrophilicity, and has significant whitening and anti-aging effects.