54 results about "Nickel sesquioxide" patented technology

The invention relates to a process for preparing spinel-type lithium manganate as positive electrode active material of lithium ion storage battery by doping lithium carbonate, manganese dioxide, alumina, nickel sesquioxide and dichromium trioxide to improve the cycling stability of the spinelle type lithium maganate anode material. The spinelle type lithium manganate anode material exhibites fine performance through overcharge and discharge rotational test.

The invention discloses a wave-absorbing plate for electromagnetic shielding. The wave-absorbing plate comprises graphite flake used as a reflecting layer, a wave-absorbing layer and a release material layer. A first adhesive layer is arranged between the graphite flake and the wave-absorbing layer. A second adhesive layer is disposed between the wave-absorbing layer and the release material layer. The wave-absorbing layer is composed of the following ingredients: a wave-absorbing powder, butyl acrylate, acrylic acid, 2-ethylhexyl acrylate, methyl methacrylate, vinyl acetate, methacrylic acid-2-hydroxyl ethyl, sodium polyacrylat and methylethyl ketone peroxide. The wave-absorbing powder is composed of the following ingredients: BaFe12O19, nickel sesquioxide, nano-graphite powder, cobalt naphtenate, unsaturated polyester and an acrylic leveling agent. Attenuation rate of the wave-absorbing plate reaches 88% at 2-10 GHz of electromagnetic wave, thus being beneficial to gluing of a polymer and uniform dispersing of mixed powders in the polymer. Therefore, reliability of electromagnetic property is guaranteed.

The invention discloses stray light absorbing glass for an optical fiber image inverter and a preparation method of the stray light absorbing glass. The stray light absorbing glass for an optical fiber image inverter is prepared from the raw materials: boric acid, quartz sand, aluminum hydroxide, potassium carbonate, sodium carbonate, calcium carbonate, lithium carbonate, titanium dioxide, ferricoxide, cobalt oxide, nickel sesquioxide, manganese dioxide, sodium sulfate and arsenic trioxide. A preparation method of the stray light absorbing glass for the optical fiber image inverter is also disclosed. The black absorbing glass which can be applied to the optical fiber image inverter has a spectral transmittance of 5-10% at wavelengths of 350-900 nm under the control condition of a thickness of 1.00+/-0.01 mm, meanwhile, the smelt glass has no stone, and the glass has high glossiness; and meanwhile the glass has a softening temperature range of 620-750 DEG C, the crystallization lower-limit temperature is >= 850 DEG C, and the glass has high anti-crystallization ability and good chemical stability, and can meet the requirements of the optical fiber inverter for the process performance of the black absorbing glass.

The invention discloses a production process of a zinc oxide resistance chip with high electric potential gradient and strong through-current capability. The zinc oxide resistance chip comprises the following raw materials: a main ingredient zinc oxide and a dopant, wherein the dopant comprises bismuth sesquioxide, cobalt sesquioxide, nickel sesquioxide, chromium sesquioxide, stibium sesquioxide, silica, yttrium sesquioxide and zirconia; the mass percent of zinc oxide is not less than 90%. The production process comprises the following steps: (1) ball-milling mixing; (2) drying granulation; (3) dry pressing; (4) sintering; and (5) silver electrode coating. By virtue of the production process, the zinc oxide resistance chip with high electric potential gradient and strong through-current capability can be prepared based on a solid-phase synthesis method.

The invention discloses a wear-resistant anti-impact metal material which comprises, by weight, 0.2-0.4 part of molybdenum, 4-7 parts of manganese, 6-11 parts of magnesium oxide, 2-4 parts of nickel, 0.2-0.6 part of boron, 8-12 parts of nickel sesquioxide, 2-3 parts of antimony, 2-4 parts of thorium dioxide, 3-4 parts of niobium, 3-5 parts of tungsten, 6-9 parts of zinc, 7-13 parts of copper, 4-6 parts of chromium, 1-3 parts of zirconium, 2-4 parts of germanium, smaller than or equal to 0.020 part of P, smaller than or equal to 0.020 part of S and the balance of iron. Elements in alloy are reasonable in proportion, so that wear resistance and impact resistance of the metal alloy material are improved remarkably; the metal material embodies high strength, thereby reaching level of high-hardness materials and maintaining comprehensive performance indexes like enough high obdurability and high impact resistance, wear resistance and erosion corrosion resistance, so that industrial application of the metal material in the field of high-reliability wear under working conditions of high impact wear is realized.

The invention discloses a piezoresistor blank, a preparation method thereof, a piezoresistor and a preparation method thereof. The preparation method of the piezoresistor blank includes (1), mixing 70-95wt% of piezoresistor powder and 5-30wt% of binder to be pug, cooling the pug to room temperature, and then breaking the pug into granules for injection molding, wherein the piezoresistor powder comprises, by weight, 85-95% of zinc oxide and 5-15% of additive which comprises, by weight, 5-8% of manganese carbonate, 35-50% of bismuth oxide, 2-4% of tin dioxide, 15-25% of cobalt oxide, 5-10% of titanium dioxide, 1-3% of barium carbonate, 0.1-1% of strontium carbonate, 5-20% of boric acid, 2-10% of nickel sesquioxide and 0.1-1% of aluminum nitrate, and the binder comprises, by weight, 30-88% of paraffin, 5-30% of polymethyl methacrylate, 5-30% of ethylene-vinyl acetate copolymer and 2-10% of stearic acid; (2), subjecting the granules to injection molding to obtain the piezoresistor blank. The piezoresistor is high in uniformity and production efficiency and large and uniform in density.

A colored glaze is characterized by being prepared from, by weight, 50%-60% of quartz sand with the particle size ranging from 2 mm to 4 mm, 10%-15% of potassium nitrate which serves as a fluxing agent, 10%-15% of antimony trioxide which serves as a clarifying agent, 4%-10% of manganese dioxide, 2%-8% of copper oxide, 3%-9% of nickelic trioxide, 1% of organic bentonite and 2% of sodium water glass, wherein the manganese dioxide, the copper oxide and the nickelic trioxide serve as a coloring agent. In practical use, the good-quality colored glaze art craft can be prepared through the colored glaze formula.

The invention relates to a lining brick of a lean iron ore magnetizing and roasting rotary kiln and a preparation method of the lining brick. The lining brick is characterized by taking 60 weight percent to 65 weight percent of high-purity magnesia particle as aggregate, and taking 10 weight percent to 15 weight percent of rho-Al2O3 micro-powder, 20 weight percent to 25 weight percent of light-burnt magnesia fine powder and 1 weight percent to 4 weight percent of nickel sesquioxide micro-powder as a matrix material; the preparation method comprises the following steps: preparing the materials according to the content of the aggregate and the components and content of the matrix material; uniformly mixing the matrix material; adding the uniformly mixed matrix material into the aggregate and uniformly mixing; additionally adding zirconium sol which accounts for 5 weight percent to 8 weight percent of the sum of the matrix material and the aggregate, and uniformly mixing; vibrating and molding; curing and drying; finally, putting a mixture into a muffle furnace and rising the temperature to be 1500 DEG C to 1600 DEG C at the temperature rate of 3 DEG C/min to 5 DEG C/min; keeping the heat for 1h to 2h; cooling along a furnace to prepare the lining brick of the lean iron ore magnetizing and roasting rotary kiln. The lining brick of the lean iron ore magnetizing and roasting rotary kiln and the preparation method of the lining brick have the characteristics of low cost and simple process flow; the prepared lining brick of the lean iron ore magnetizing and roasting rotary kiln has high slag corrosion resistance, small coefficient of heat conductivity and great cold-state compressive strength.

The invention discloses a microwave sample pretreatment method applied to organic carbon detection, which is characterized in that when the sample is heated by a wave-absorbing material in a manner of direct contacting, silicon iron, nickel sesquioxide, cobalt sesquioxide, molybdenum sulfide, ferric sulfide, ferroferric oxide, manganese dioxide, nickel oxide, tungsten trioxide, molybdenum sulfide, copper pyrite, cuprous sulfide, ferrite compound, or other wave-absorbing materials free from carbon are adopted as wave-absorbing media; and when the sample is indirectly heated by the wave-absorbing material, carbon, silicon carbide, silicon iron, nickel sesquioxide, cobalt sesquioxide, molybdenum sulfide, ferric sulfide, ferroferric oxide, manganese dioxide, nickel oxide, tungsten trioxide, molybdenum disulfide, copper pyrite, cuprous sulfide, ferrite compound, or other wave-absorbing materials are taken as the wave-absorbing media. The sample pretreatment method disclosed by the invention has the advantages of being rapid in temperature raising speed, complete in reaction and the like, and is suitable for pretreatment of detection of various organic carbon samples.

The invention discloses a method for improving fermentation level of glucoamylase, which comprises the following steps of: producing the glucoamylase by fermentation of Aspergillus Niger, and adding growth and metabolism accelerator into fermentation culture solution during growth and propagation of the Aspergillus Niger, wherein the growth and metabolism accelerator mainly comprises vitamin B1, vitamin B2, nicotinic acid, nickel sesquioxide, cobalt chloride, ferric trichloride, ammonium molybdate, oleic acid, manganese sulfate, pantothenic acid, inositol and diammonium hydrogen phosphate. The method and the growth and metabolism accelerator can promote the growth and development of the Aspergillus Niger, improve the vital movement strength of microbes, increase the production of the glucoamylase, radically avoid various adverse effects on production and product quality due to insufficient nutrition during producing strains, and can totally provide various nutrients required for the growth and propagation stages of the strains so that the strains can keep good fermentation performance all the time. After the method is used, the fermentation level of the glucoamylase can be improved by over 40 percent compared with the original level.

The invention provides a high-resistivity soft-magnetic ferrite magnetic core and a processing method thereof. Raw materials of the high-resistivity soft-magnetic ferrite magnetic core comprise, by weight, 53-56 parts of ferric oxide, 6-11 parts of zinc oxide, 27-31 parts of manganese oxide, 3-5 parts of copper hydroxide, 2.5-3.6 parts of nickel sesquioxide, 0.9-1.3 parts of sodium polyacrylate, 0.4-0.7 part of silica sol, 0.7-1.1 parts of polyvinyl alcohol, 1.2-1.6 parts of polyamide resin, 0.7-1.3 parts of sodium silicate and 3-7 parts of deionized water. The soft-magnetic ferrite magnetic core has a high resistivity, has a low eddy current loss under an alternating magnetic field, and is an ideal material for manufacturing high-freency transformers, broadband transformers, adjustable inductors and other high-frequency circuits.

The invention provides a far infrared emission film layer and a manufacturing method thereof, an electric heating disc and a cooking utensil. A mixture containing manganese dioxide, nickel sesquioxide and chromium oxide is adopted, a far infrared emission film layer is manufactured on the surface of a high-temperature 500 to 600-DEG insulated substrate, and then, the far infrared emission film layer and the insulated substrate are subjected to an annealing and film forming process to enable the far infrared emission film layer to be attached on the insulated substrate. The far infrared emission film layer manufacturing method provided by the invention is simple, the operation is convenient, the manufactured far infrared emission film layer can be matched with an electrothermal film layer for use to convert radiation thermal energy into far infrared thermal energy, rapid temperature rise is realized, the temperature lost due to moisture eliminating can be reduced, the speed of added thermal energy absorption is enhanced, thermal energy loss is reduced, the radiation thermal conduction efficiency is thus effectively improved, the energy-saving purpose is achieved, and thus, requirements on energy conservation of products by the country can be better met.

The invention discloses a metal ceramic die material resistant to high temperature. The metal ceramic die material is composed of, by weight, 4-7 parts of potassium feldspar, 15-20 parts of nanosilicon dioxide, 1-5 parts of molybdenum disilicide, 3-7 parts of silicon nitride, 5-15 parts of silicon carbide, 2-5 parts of zirconium diboride, 2-5 parts of magnesium oxide, 2-6 parts of acetic acid n-butyl ester, 4-7 parts of ethylenediamine tetraacetic acid disodium, 1-3 parts of ceric oxide, 5-10 parts of nickel sesquioxide and 15-20 parts of iron. The metal ceramic die material is high in strength and toughness and resistant to high temperature.

The invention provides an ethylamine catalyst prepared by a mechanochemical method. By adopting the mechanochemical method, the catalyst for the catalytic amination of ethylamine is obtained by carrying out ball milling on a mixture prepared from sepiolite, aluminum oxide, nickel sesquioxide, cobaltosic oxide, indium sesquioxide and silver oxide, then adding nitric acid to carry out a first ball milling reaction, and then adding ammonium carbonate to carry out a second ball milling reaction. The preparation of the ethylamine catalyst by adopting the mechanochemical (ball milling) method has the advantages that preparation steps are a few; the output of wastewater is low; the price of raw materials are relatively lower. The catalyst provided by the invention is used for a reaction for the catalytic amination of ammonia and ethanol in a hydrogen-containing condition to produce the ethanol, and the catalyst is indicated to have higher activity and selectivity.

The invention discloses a screen protecting film for an electronic product. The screen protecting film comprises a PET insulation layer, a metal layer, a wave absorbing layer and a mold release material layer, wherein a first adhesive layer is arranged between the PET insulation layer and the metal layer; a second adhesive layer is arranged between the metal layer and the wave absorbing layer; the wave absorbing layer comprises the following constituents: 100 parts of wave absorbing powder, 25 to 35 parts of butyl acrylate, 12 to 15 parts of acrylic acid, 20 to 35 parts of iso-octyl acrylate, 10 to 30 parts of methyl methacrylate, 1 to 3 parts of vinyl acetate, 0.1 to 1 part of 2 hydroxyethyl methacrylate, 0.5 to 2 parts of sodium polyacrylate, and 0.4 to 1 part of methyl ethyl ketone peroxide; the wave absorbing powder comprises the following constituents: 100 parts of barium ferrite powder, 18 to 25 parts of nickel sesquioxide, 8 to 12 parts of nano-graphite powder, 8 to 12 parts of cobaltous chloride, 60 to 70 parts of unsaturated polyester and 40 to 50 parts of sodium dodecyl benzene sulfonate. The screen protecting film has the advantages that the wave absorbing property of a protecting adhesive tape can be improved remarkably; over centralization of heat is avoided; convenience is brought for heat diffusion.

The invention discloses a heating element based on a thermo-electronic film and a preparation method thereof. The preparation method comprises the following steps that 1, SnCl4.5H2O is added into a mixed solution of ethyl alcohol and deionized water, heating and stirring are conducted till the SnCl4. 5H2O is fully dissolved, antimony trichloride, bismuth trichloride and titanium tetrachloride areadded and stirred to be uniform, and an electric heating film solution is obtained; 2, the preheated tubular base body is placed in a high-temperature furnace, vaporous electrothermal film liquid is introduced into the high-temperature furnace, the vaporous electrothermal film liquid is deposited on the surface of the tubular base body, heat preservation is conducted, then natural cooling is conducted, and an electrothermal film layer is obtained; wherein the tubular base body rotates around the central axis of the tubular base body in the high-temperature furnace; and 3, manganese dioxide, nickel sesquioxide, cobalt sesquioxide and chromium oxide are mixed, and the mixture is sprayed on the outer side of the electrothermal film layer to obtain the infrared emission film layer.

The invention discloses a low-melting-point high-tenacity ceramic material and a preparation method and application thereof, belonging to the technical field of industrial and civil ceramic materials. The ceramic material comprises the following components in percentage by mass: 48-60 percent of silicon dioxide, 7.2-8.3 percent of titanium dioxide, 7.2-8.3 percent of aluminum oxide, 5.5-7.5 percent of diboron trioxide, 5-6 percent of sodium oxide, 5.5-6.7 percent of lithium oxide, 3.0-4.0 percent of diantimony trioxide, 1.0-2.0 percent of cobalt sesquioxide, 1.0-2.0 percent of dichromium trioxide, 1.0-2.5 percent of nickel sesquioxide, 1.0-2.0 percent of strontium oxide and 1.0-3.0 percent of zinc oxide. The invention has the advantages that: over 50 percent of energy consumption can be reduced, the toughness can be improved, the process steps are simple, the process requirements are not severe, the technical effects of low melting point and high toughness of the ceramic material can be ensured, ceramic coatings can be formed on the surface of a workpiece or two faces of a steel plate in a simple way, and the problem of enameling on two faces of a reaction kettle in the prior art is solved.

The invention provides a preparation method of a conductive ceramic material. The material is prepared from the following components: stannic oxide, copper oxide, aluminum oxide, iron sesquioxide, zinc oxide, cobaltous oxide, lead oxide, magnesium oxide and nickel sesquioxide in a weight ratio of (86-96%) to (0-0.5%) to (0.5-1%) to (0.5-2%) to (0-0.5%) to (0-1%) to (0.5-2%) to (2-4%) to (0.5-3%). The preparation method is characterized by comprising the following steps: firstly, ball-milling pure stannic oxide for 30-40 hours, wherein the ratio of stannic oxide to balls to water is 2 to 4 to 1; then, drying and carrying out treatment by a 500mesh sieve; then, mixing and dosing according to components; grinding the components for 3-5 hours; adding a 5-15wt% PVA aqueous solution to prill, sieving by a 70-90mesh sieve and drying; then, extrusion-forming by 5-8 tons of pressures; then, putting in a sintering furnace to be sintered in an oxidizing atmosphere at the sintering temperature of 1600-1800 DEG C; and then insulating for 4-8 hours and naturally cooling.

The invention provides a molybdenum dioxide conductive ceramic material. The material is composed of molybdenum dioxide, copper oxide, ferric oxide, zinc oxide, lead oxide and nickel sesquioxide, and is characterized in that the weight ratio of the above components is 92-96%:0.5-1%:0.5-1%:1.5-2%:1-2%:0.5-2%.