59results about How to "Suppressor enrichment" patented technology

A process for preparing the tea pigment includes such steps as mashing fresh tea leaves, adding enzyme, adding them to the solution of theopolyphenol in organic solvent, adding acidic aqueous solution, enzymatic oxidizing-polymerizing reaction, separating to obtain tea red, tea yellow and tea brown, purifying, concentrating and drying.

The invention relates to high-performance and intermediate- and low-temperature composite positive electrode material with a pomegranate fruit structure for a solid-oxide fuel cell. The composite positive electrode is particularly an LSCF-GDC & YSZ nanometer composite positive electrode in which an LSCF-GDC pomegranate seed layer is attached onto an YSZ framework diaphragm, wherein the size of pomegranate seed LSCF-GDC particle is 10-20 nanometers, and the YSZ diaphragm is formed by connecting particles of around 200 nanometers. The positive electrode with such structure has a relatively long three-phase boundary, and the YSZ diaphragm is grown with an electrolyte membrane after high-temperature sintering to form a smooth ionic conductive passage; and moreover, with the addition of GDC in the LSCF-GDC nanometer composite particle, Sr is prevented from being enriched in an LSCF surface, thus, the generation of a high-resistance phase SrZrO<3> is prevented, and the performance and the stability of the electrode are remarkably improved.

The invention discloses a cathode material of a solid oxide fuel cell and a preparation method thereof. The cathode material is characterized in that the cathode material is a composite negative electrode formed by a perovskite oxide and an oxide MO2 modified on the surface of the perovskite oxide, wherein M is Ti, Zr, Nb, Ce, Ru or Sn, the mass content of the oxide MO2 in the composite negative electrode accounts for 1-20%, the particle size of the oxide MO2 is 0.5 to 100 nanometers, and the oxide MO2 in the composite negative electrode coats the surface of the perovskite oxide. The perovskite oxide can be first prepared on the surface of an electrolyte or a partition layer of the battery by methods of coating, silk-screen printing, flow casting and the like, and then the oxide MO2 is modified on the surface of the perovskite oxide in the negative electrode by methods of solution impregnation, sol impregnation, magnetron sputtering and the like. The cathode material disclosed by the invention is endowed with excellent electrochemical performance and favorable stability.

The invention provides a preparation method of a catalyst used for preparing vinyl chloride by acetylene gas-phase hydrochlorination. Active carbon is used as a carrier. The preparation method comprises following steps: active carbon is used as a carrier, a reactive metal is fixed on active carbon by immersing; and after that, the active carbon carrier is placed in a drying tower, and is provided with electricity so that heat is generated and the drying process of the catalyst preparation is completed. The activity of the catalyst prepared by the preparation method is higher than that of the catalyst prepared by traditional drying method.

The invention discloses a tin-bismuth composite alloy and a preparation method thereof. The method comprises the following steps: synthesizing conductive polymer nano fiber, and preparing a metal coating layer on the surface of the conductive polymer nano fiber; adding the conductive polymer nano fiber with the metal coating layer into an organic solvent, and dispersing; performing secondary doping treatment; preparing nano tin powder and nano bismuth powder respectively; adding the obtained nano tin powder and nano bismuth powder into the organic solvent, and performing acid pickling treatment; performing purification treatment to obtain pure nano composite powder; mixing the obtained conductive polymer nano fiber after the secondary doping treatment, the obtained nano composite powder and a soldering flux, and stirring to obtain uniform tin-bismuth composite powder; performing sintering treatment on the tin-bismuth composite powder to obtain the tin-bismuth composite alloy. Through the method, a low-temperature tin-bismuth composite alloy material with a low melting point and high toughness is obtained.

The invention discloses a control method of coating performance surface quality of a double-phase steel cold-rolled high-strength automobile board, which comprises smelting, continuous casting, hot rolling, descaling, acid rolling, continuous annealing and leveling. The descaling process uses a three-stage descaling process, wherein the descaling position comprises descaling after a heating furnace, descaling before rough rolling and descaling before finish rolling, the descaling pressure at each descaling point is greater than or equal to 24MPa, the rough rolling is reciprocating rolling, therolling is carried out for 5 times, and high-pressure water descaling is carried out for every time. By adjusting and optimizing a whole process production process, including controlling the chemicalcomposition of a continuous casting blank, improving the heating and cooling system of the continuous casting, hot rolling, and cold rolling, controlling the hot rolling and descaling processes and cold rolling and acid rolling processes, controlling the roughness of a leveled steel strip, and the like, the surface quality of the double-phase steel cold-rolled automobile board is improved, the element enrichment on the surface of the steel board is inhibited, the quality of a phosphating film is improved, the coating performance of the double-phase steel cold-rolled high-strength automobile board and the anti-corrosion performance of the double-phase steel cold-rolled high-strength automobile board after being coated are improved.

The invention discloses 1500MPa ultrahigh-strength low-density steel and a preparation method thereof, and belongs to the field of advanced metal materials. Aiming at the problems of low plasticity and poor comprehensive mechanical property of existing medium-low manganese low-density steel, the invention provides the 1500MPa ultrahigh-strength low-density steel which comprises the following components in percentage by mass: 1-1.6% of C, 8-16% of Mn, 6-11% of Al, 1.5-9% of Cr and the balance of Fe and inevitable impurity elements in iron. By adding the chromium element, the solid solution limit of carbon atoms is improved, the solidification rate of molten steel is high in the solidification process, enrichment of kappa carbides at the grain boundary of a low-density steel matrix and precipitation of intracrystalline coarse kappa carbides are inhibited, and therefore the plasticity of the steel is greatly improved. In addition, the element Cr is beneficial to the corrosion resistance and the oxidation resistance of the steel matrix. The tensile strength of the steel reaches 1500 MPa, the percentage elongation after fracture ranges from 10% to 50%, and the mechanical property is stable. According to the preparation method, the strength is further improved, the process is simple, consumed time is short, and the preparation and production efficiency of the high-performance low-density steel plate is greatly improved.

The invention discloses a low-temperature lead-free solder alloy, and belongs to the technical field of electronic welding. The low-temperature lead-free solder alloy comprises, by weight percentage,20-50% of Bi, 0.5-10% of Sb, 0.5-10% of In, 0-0.20% of Ge and 0-0.11% of P; two or more than two types of 0-0.2% of Ni, 0-0.2% of Co, 0-0.11% of Ga, 0-0.2% of Si, 0-0.5% of Al and 0-0.5% of Zn; and the balance of Sn and inevitable impurities. According to the low-temperature lead-free solder alloy, multi-element alloy elements such as the Sb, the In, the Ni, the Co, the Ge and the like are added so that the mechanical performance of the solder alloy can be obviously changed; and in formed welding spots and interfaces, the multi-element alloy elements in the dispersed distribution block enrichment of the Bi and prevent generation of rich Bi phases, so that damage of the hard and brittle rich Bi phases to the mechanical property of welding joints is reduced, and the welding performance of the solder alloy is improved.

The invention discloses a beta-inhibiting protein, nucleonic sequence and application of composition with nucleonic sequence to treat relative disease with histone acetylated reduction level, which also relates to the application of delta opitum receptor stimulating agent or k opitum receptor exciting agent to treat relative disease with histone acetylated reduction level. The invention provides a drug sieving method from candidate material to treat relative disease with histone acetylated reduction level.

The invention provides a catalyst as well as a preparation method and application thereof. The catalyst contains an active component and silicon dioxide, wherein the composition of the active component is shown by a general formula (I): CuaFebMncOd; a, b, c and d represent the atomic mole numbers of elements Cu, Fe, Mn and O respectively; a is 1, b is 0.2-3, c is 0.02-2, and d is determined by the number of oxygen in the oxides of elements Cu, Fe and Mn; and the silicon dioxide accounts for 1-30% of total weight of the catalyst. The catalyst provided by the invention has the advantages of low reaction temperature and pressure, low selectivity on carbon dioxide, high selectivity on total alcohol, high wear resistance, long service life and the like.

The invention provides a preparation method of an adsorbent for gas adsorbing separation. The adsorbent is used for the gas separation through pressure swing adsorption or temperature swing adsorption. The preparation method which treats activated carbon as a carrier comprises the following steps: dipping a copper salt and/or other assistants onto the active carbon carrier, placing the above obtained dipped activated carbon in a drying tower, and galvanizing the dipped activated carbon for heating the activated carbon in order to complete the drying process of the preparation of the adsorbent. The copper salt in the obtained adsorbent has a large load capacity and uniform dispersion on the surface of the activated carbon, so the adsorbent has a higher adsorption capability than traditional drying methods.

The invention discloses a shock-resistant corrosion-resistant aluminum alloy softball bat material and a preparing method thereof, and relates to the technical field of aluminum alloys. The shock-resistant corrosion-resistant aluminum alloy softball bat material comprises, by weight percentage, 0.3%-0.5% of Si, 0.8%-1.1% of Mg, 0.1%-0.3% of Mn, 0.3%-0.5% of Cu, 0.4%-0.7% of Fe, 3.5%-3.9% of Zn, 0.1%-0.3% of Li, 0.1%-0.3% of Cr, 0.3%-0.5% of Ti, 0.1%-0.3% of Ce, 0.05%-0.1% of Sc and the balance Al. All elements and contents in the alloy are reasonably optimized, the good mechanical property anddecay resistance are achieved, melt is subject to vibration scattering under a certain frequency in the preparing process, grains can be effectively refined, refining and homogenization of material organization and a second phase are facilitated, a casting ingot is subject to homogenization treatment through three-stage continuous temperature rise, the homogenization degree is more high, the mechanical property of the alloy can be further improved, the material organization is improved, the alloy material obtained after heat treatment has the good strength, hardness and corrosion resistance,the material is used for a softball bat, acute impact of balls to a bat body can be borne for a long period, cracking deformation is not prone to occurrence, and the service life is long.

The invention relates to a novel vertical roll mill with a grinded powder outward-guide mechanism. The novel vertical roll mill comprises a vertical roll mill grinding disc, a powder selector rotor, static wind guide blades, a discharge cone, a charge chute and a roll mill drive device. The novel vertical roll mill is characterized by further comprising the grinded powder outward-guide mechanism, wherein the outward-guide mechanism is connected with the discharge cone of the vertical roll mill, and comprises a guide chute and a horizontal conveying mechanism; the guide chute is connected to the bottom of the discharge cone, the guide chute is communicated with the inner cavity of the discharge cone, and the lower end of the guide chute is inclined outwards to form an inclined slope; and the horizontal conveying mechanism is adjacent to the lower end part of the guide chute. Due to the above-mentioned structure, adjustment for the specific surface area of materials in a reasonable range is ensured; medium grains or finished products are guided out of the mill, thus material circulation is reduced, pressure loss in the mill is reduced, grinding efficiency is improved, energy consumption is saved, the wear of the grinding disc and grinding roll sleeves is reduced, and the lives of wear-resistant parts are prolonged; and the returned powder is easily finely grinded, and due to the reduction of the part of materials, the stability of a material layer is improved, and the vibration and noise of the mill are reduced.

The invention relates to a control method for a protective atmosphere of a bell-type annealing furnace, and belongs to the technical field of bell-type annealing processes in the metallurgical industry. According to the technical scheme, the method is operated according to the following steps: (1) inner cover cold sealing is tested; (2) safe purging: purging air in an inner cover by adopting N2 before annealing heating is started; (3) after safe purging is finished, a heating cover is buckled up, heating is carried out according to a set annealing process, in the heating process, purging is carried out with H2, N2 in the furnace is completely removed, and the purpose of all-hydrogen annealing is achieved; (4) before heating is finished, inner cover heat sealing testing is carried out, and it is ensured that an inner cover heat sealing testing test is qualified; and (5) when the temperature of a coil base is cooled to the tapping temperature, purging replacement is conducted on H2 in the furnace through protective gas N2. The method has the beneficial effects that Mn and Si elements in the steel can be inhibited from being enriched on the surface in a weak oxygen atmosphere and forming granular aggregates to cover the surface of the strip steel, so that the aim of eliminating the color difference defect of the edge part of a steel coil is fulfilled.

The invention belongs to the field of biomedical polymer materials, and discloses a preparation method and application of a bionic high-adhesion long-acting antibacterial antifogging agent. The antifogging agent is prepared by the steps that firstly, a hydrophilic bionic high-adhesion polymer is prepared, then the hydrophilic bionic high-adhesion polymer coats a surface to be treated through a solution of the hydrophilic bionic high-adhesion polymer, so as to inhibit surface fogging and bacterium breeding. A hydrophilic bionic high-adhesion polymer solution is prepared by controlling key raw materials, a flow process and the like of the antifogging agent, and the hydrophilic bionic high-adhesion polymer solution can be used as a long-acting antibacterial antifogging agent for antifogging and antibacterial treatment on the surfaces of medical goggles lenses and the like, has good biological safety, and can effectively inhibit fogging and bacterium breeding on the surfaces of the goggles.

The invention discloses a special rice selenium-rich fertilizer capable of inhibiting heavy metal cadmium in crops as well as a preparation method and application thereof. The fertilizer is prepared from the following raw materials in parts by weight: 30-50 parts of orange peels, 10-20 parts of a cake fertilizer, 1-5 parts of calcium hydrogen phosphate, 1-5 parts of potassium chloride and 1-3 parts of sodium selenite, wherein the cake fertilizer is one or more of a soybean cake, a peanut cake, a rapeseed cake, a sesame cake and a tea seed cake. Agricultural and sideline products such as orangepeels and the cake fertilizer are fully utilized, and the problem of environmental pollution is solved. The special rice selenium-rich fertilizer can effectively accumulate selenium and inhibit enrichment of cadmium of a rice product.

The invention discloses a modifier for reducing methyl mercury pollution in an acidic rice field and a method thereof, which mainly relates to the field of agriculture pollution prevention and treatment. The method comprises basal application of the modifier and moisture management. The preparation method of the modifier is characterized in that weathered coal is prepared to coal-based humic acid, according to the weight percentage, 0.1-0.2% of sodium selenite is added and aged, calcium carbonate with the weight ratio of 1:1.2-1:1.5 is added, and the materials are uniformly mixed. The modifier has the beneficial effect that the modifier is used for the acidic rice field with pH value of 4-6 and the mercury pollution degree of lower than 6 mg/kg, compared with the contrast group, the methyl mercury content of soil and rice is reduce to 60% and more, the pH value of the soil is obviously increased, the modifier has good reappearance, and has the advantages of low cost, high efficiency and easy operation, the paddy rice output and plant biomass are not reduced, and the modifier has high economic effect.

The invention discloses a method for achieving filter liquor circulation, recovering waste lead plaster through a wet process and preparing high-purity red lead and relates to the technical field of waste lead-acid cell lead plaster wet process recovery and red lead preparation. The method comprises the following steps that 1, organic acid salt, organic acid and reducer mixed liquor are utilized for leaching out the waste lead plaster, and after solid and liquid are separated, lixivium is obtained; 2, a carbonate solution is added to the lixivium, the reaction pH is regulated, and solid and liquid separating is carried out to obtain lead carbonate sediment and filter liquor; and 3, lead carbonate is roasted in the aerobic atmosphere, and the high-purity red lead with low impurity content is prepared. The prepared red lead product is high in purity and low in impurity content, the content of main impurities Ba and Fe is smaller than 10 mg/kg, the content of Cu, Zn and Al impurity elements is smaller than 1 mg/kg, the filter liquor can achieve closed circulation of organic acid radical ligand in a leaching system, and the use efficiency of a leaching agent is improved remarkably.