572 results about "Zirconium dioxide" patented technology

The invention discloses a raw material of a near-zero shrinkage silicon-based ceramic core and a preparation method thereof, the raw material of the ceramic core comprises refractory material powder, zirconium silicate powder and metal zirconium powder, and the refractory material powder, the zirconium silicate powder and the metal zirconium powder are mixed according to the proportion to form the raw material of the ceramic core; ceramic core raw materials are added into liquid paraffin to form ceramic core slurry, the ceramic core slurry is used for obtaining a ceramic core biscuit through a hot-pressing injection molding method, and the ceramic core biscuit is subjected to powder burying sintering to obtain the ceramic core. Volume shrinkage generated in the sintering process of the ceramic core is made up through in-situ synthesis oxidation expansion of the metal zirconium powder, meanwhile, shrinkage of the ceramic core can be made up through generated zirconium dioxide due to the phase change effect, near-zero shrinkage of the silicon-based ceramic core in the sintering process is achieved under the dual effects of in-situ oxidation and the phase change effect, and the silicon-based ceramic core has the good sintering performance. Meanwhile, the generated zirconium dioxide improves the room-temperature bending strength and the high-temperature bending strength of the ceramic core.

The invention discloses a preparation process of an aluminum oxide ceramic material, which comprises the following steps: S1, pretreatment of aluminum oxide powder: taking alpha-Al2O3 powder as a raw material, adding a dispersion medium, carrying out ball milling, transferring into an ultrasonic dispersion machine, dispersing, and further carrying out vacuum drying to obtain pretreated aluminum oxide powder; s2, chemical activation treatment: weighing pretreated aluminum oxide, magnesium oxide, nano silicon dioxide, calcium oxide, zirconium dioxide, titanium dioxide and modified nano silicon carbide in parts by weight, mixing, sequentially adding a dispersing agent absolute ethyl alcohol and a KH550 silane coupling agent, stirring at a high speed, adding a polyvinyl alcohol binder, and continuously stirring to obtain ceramic slurry; s3, sieving the ceramic slurry, filling the ceramic slurry into a mold, and performing isostatic pressing to obtain a ceramic green body; and S4, putting the ceramic green body into a box-type sintering furnace, sintering step by step, and cooling to room temperature along with the furnace to obtain the aluminum oxide ceramic material. The prepared aluminum oxide ceramic material has high compactness, excellent dielectric strength and mechanical property, low energy consumption and great application potential.

The embodiment of the invention discloses a ZrO2 doped CMA material preparation method and a structure and function integrated regulation and control method thereof. The method comprises the following steps: S1, mixing an aluminum oxide source, a calcium oxide source and a magnesium oxide source according to a set proportion to obtain a mixed source material, and adding an additive zirconium dioxide into the mixed raw material to obtain a raw material mixture; wherein the particle sizes of the alumina source, the calcium oxide source and the magnesium oxide source are equivalent, and the mass ratio of the zirconium dioxide to the mixed source material is not greater than 4wt%; s2, stirring and mixing the raw material mixture, and adding a water binder to obtain a uniformly mixed material; wherein the mass ratio of the water to the raw material mixture is 5-50%; s3, carrying out compression molding on the uniformly mixed material under the pressure of 80-120 MPa to obtain a green body; and S4, firing the green body in an air atmosphere at 1650-1750 DEG C to obtain the ZrO2 doped CMA material. The content of the C2M2A14 phase in the CMA material can be regulated and controlled between 80% and 100% by regulating and controlling the doping amount of ZrO2, the firing temperature and the heat preservation time.

The invention discloses a radiation refrigeration coating with high refractive index contrast, and belongs to the technical field of radiation refrigeration coatings. The radiation refrigeration coating with high refractive index contrast comprises the following raw materials: hollow microspheres, a high refractive index pigment, a film-forming substance, a solvent and an auxiliary agent. The coating process of the radiation refrigeration coating film comprises two coating steps: firstly, coating an inner layer coating film on the surface of a base material by using the radiation refrigeration coating with rutile type titanium dioxide as a high-refractive-index pigment as a raw material; and coating the surface of the inner-layer coating film with an outer-layer coating film by using the radiation refrigeration coating with high-refractive-index pigment being zirconium dioxide and / or zirconium silicate as a raw material. According to the invention, a closed and independent bubble structure is introduced into the coating by adopting the hollow microspheres, and the preferable high-refractive-index pigment is matched, so that the refractive index difference value between adjacent components in a coating film is increased, and the sunlight reflectivity of the coating film is remarkably enhanced, thereby realizing excellent radiation refrigeration performance under strong sunlight irradiation.

The preparation process comprises the following steps: dissolving ammonium dimolybdate, ammonium rhenate and water at a high temperature, then adding zirconium hydroxide, uniformly mixing, carrying out vacuum drying, carrying out two-stage hydrogen reduction on the obtained precursor composite powder, and carrying out vacuum drying to obtain the zirconium dioxide reinforced phase-containing molybdenum-rhenium alloy capable of inhibiting abnormal growth of crystal grains, thereby obtaining the zirconium dioxide reinforced phase-containing molybdenum-rhenium alloy capable of inhibiting abnormal growth of crystal grains. Zirconium oxide reinforced molybdenum-rhenium composite powder obtained after reduction is subjected to cold isostatic pressing, pressureless sintering and hot isostatic pressing to obtain zirconium oxide reinforced molybdenum-rhenium alloy, and then the zirconium oxide reinforced molybdenum-rhenium alloy is obtained through high-temperature rolling and recrystallization annealing treatment. According to the method, atomic-level mixing of molybdenum and rhenium is achieved through liquid-phase doping, the microstructure of the molybdenum-rhenium alloy is more uniform and fine due to addition of ZrO2, the recrystallization temperature is increased, and the phenomenon that sintered grains of the molybdenum-rhenium alloy grow abnormally is relieved. And by optimizing the annealing process and regulating and controlling the annealing mode, grains are rearranged to form a more uniform microstructure, abnormal growth of the grains is further inhibited, and the high-temperature tensile strength and the ductility of the molybdenum-rhenium alloy are improved.

The invention relates to an enameled flat wire. The surface of a conductor is sequentially coated with first polyimide paint, second polyamide-imide paint, third polyimide paint and fourth polyimide paint, wherein the second polyamide-imide paint and the third polyimide paint are alternately arranged; wherein the peel strength of the first polyimide paint is not lower than 1.5 N / mm; the relative dielectric constant of the third polyimide paint is not greater than 2.1; nanoscale zirconium dioxide and nanoscale aluminum oxide are added into the fourth polyimide paint. The tensile strength of the enameled flat wire is not lower than 230 MPa; in a measurement standard within 100PC, a partial discharge initial voltage value of 50Hz-20kHz is not less than 2000V; under the condition that the leakage current does not exceed 5mA, the breakdown voltage value is not lower than 11kV; in a corona environment with the temperature being 155 DEG C, the voltage of Vp-p being 4000 V, the rising edge being 100 ns and the frequency being 20 kHz, the corona-resistant service life is 100-400 hours; in an ATF oil resistance test of T / CEEIA415-2019 standard, a partial discharge initial voltage value and a breakdown voltage value are both not lower than 90% of an initial value.

The invention relates to the technical field of piezoelectric light-transmitting functional ceramics, and discloses a high-light-transmitting ceramic material and a preparation method thereof.The preparation method comprises the following preparation steps that sodium carbonate, potassium carbonate, niobium pentoxide, antimony trioxide, samarium oxide and zirconium dioxide powder raw materials are taken, and after primary ball milling and drying are conducted on the powder raw materials, mixed powder is obtained; carrying out pre-sintering and secondary ball milling on the mixed powder, carrying out compression molding to form a tablet, and sintering and polishing the tablet to obtain a ceramic matrix; and spraying the composite slurry to the surface of a ceramic matrix, carrying out heat treatment, and cooling to room temperature to obtain the high-transmittance ceramic material. The antimony trioxide, the samarium oxide and the zirconium dioxide are co-doped, an antimony-samarium-zirconium liquid phase is generated in the ceramic material, pores of the ceramic material are filled and eliminated, and the prepared ceramic material has excellent optical transmittance, piezoelectric property and mechanical strength.

The invention belongs to the technical field of sewage treatment, and particularly relates to a zirconium dioxide production wastewater treatment and recovery device which comprises a flocculation part, a filtering mechanism, a material guide mechanism, a drainage mechanism and a control mechanism, the flocculation part comprises a flocculation basin, an aeration pipe and a guide pipe, one end of the aeration pipe is connected with an external aeration pump, the other end of the aeration pipe extends into the flocculation basin, and the guide pipe is obliquely arranged on the outer wall of the aeration pipe and is communicated with an inner cavity of the aeration pipe; the filtering mechanism comprises a bearing frame, a supporting barrel and a filtering barrel, the supporting barrel is mounted at the upper end of the flocculation basin through the bearing frame, and the filtering barrel is arranged at the bottom of the supporting barrel; the material guiding mechanism comprises a transmission shaft and a material guiding spiral plate, the transmission shaft is rotationally arranged in the supporting cylinder, the material guiding spiral plate is fixedly installed on the radial outer wall of the transmission shaft, and the outer wall of the material guiding spiral plate is attached to the inner wall of the supporting cylinder and the inner wall of the filtering cylinder; through cooperation of the structure, the content of flocculate in the flocculation basin can be reduced, and the sewage flocculation treatment efficiency is jointly improved under mutual promotion.

The present disclosure provides a new wet atomic layer etch (ALE) process for etching high-k dielectric materials. More specifically, the present disclosure provides various embodiments of methods that utilize new etch chemistries for etching transition metal oxide dielectric materials in a cyclic wet ALE process. In the example embodiments provided herein, new etch chemistries and methods are provided for etching zirconium dioxide (ZrO2), hafnium dioxide (HfO2) and HfxZr(1-x)O2 dielectrics in a cyclic wet ALE process. However, the wet ALE techniques described herein are not strictly limited to the example materials discussed herein and can be applied to other transition metals and transition metal oxides.

The invention provides a granulation raw material, a pre-sintered body, a zirconia porcelain block, a fast firing production method and application. The fast firing production method comprises the following steps: S1, providing a first zirconium oxide material and a second zirconium oxide material; s2, compounding the first zirconium oxide material and the second zirconium oxide material, and granulating together with an auxiliary material to obtain a granulation raw material; s3, obtaining a green body based on the granulation raw materials; s4, carrying out pre-sintering treatment on the green body to obtain a pre-sintered body; and S5, machining the pre-sintered body, and then carrying out fast firing treatment to obtain the zirconium oxide porcelain block. On the basis of compounding of granulation raw materials, the overall performance of the zirconia ceramic block can be improved while a pre-sintered body can be rapidly sintered.

The invention provides a novel underwater wet welding flux-cored wire and a preparation method thereof. The flux-cored wire comprises a metal sheath and a flux core, the flux core is prepared by sintering a flux core base material and a flux core additive; the flux core base material comprises the following raw materials in percentage by mass: 20-40% of rutile, 15-35% of fluoride, 2-7% of titanate, 3-10% of aluminum powder, 5-15% of manganese powder and 10-15% of composite nano metal oxide; the composite nano metal oxide at least comprises the following raw materials: nano aluminum oxide, nano zirconium dioxide, nano yttrium oxide, nano cerium oxide and nano lanthanum oxide; and the flux-cored additive is linear aliphatic epoxy resin. The specific mixed nano metal oxide powder is added into the flux-cored wire, grain refinement is achieved, a quenched martensite structure is reduced, the mechanical property of a weld joint is improved, meanwhile, the specific epoxy resin and the flux-cored base material are mixed, filled and sintered, a proper amount of carbon element is introduced while all raw material components of the flux-cored wire are dispersed uniformly and stably, and the welding quality of the flux-cored wire is improved. And metal is prevented from being oxidized in the welding process.

The invention discloses a doped zirconium dioxide / copper oxide composite catalyst and a preparation method and application thereof.The preparation method comprises the steps that sodium hydroxide, basic zirconium carbonate and transition metal nitrate are added into deionized water to obtain a mixed solution, the mixed solution is subjected to a hydrothermal reaction and then diluted to obtain a reaction solution, H2O2 is added into the reaction solution, and the doped zirconium dioxide / copper oxide composite catalyst is obtained. Centrifuging and drying to obtain a reaction product; adding water into the reaction product to form a turbid liquid, adding a copper nitrate trihydrate solution into the turbid liquid, adding a sodium carbonate aqueous solution to adjust the pH value to 9-10, and then stirring, standing, carrying out suction filtration, drying and roasting to obtain the transition metal doped zirconium dioxide / copper oxide catalyst. The transition metal doped zirconium dioxide / copper oxide catalyst prepared by the preparation method has relatively high catalytic activity and relatively high stability in an acidic electrolyte.

The invention discloses a compact anti-cracking fused zirconia corundum brick and a preparation method thereof, and belongs to the technical field of refractory materials, the compact anti-cracking fused zirconia corundum brick comprises the following raw materials by mass fraction: 42.7-46.6% of alumina, 36.8-40.5% of zirconium dioxide, 11.5-14.2% of silicon dioxide, 2.5-4.4% of niobium pentoxide, 0.7-1.1% of soda ash, 0.6-1% of manganese dioxide and 0.5-1% of copper oxide, the preparation method comprises the following steps: mixing and melting the raw materials, introducing oxygen to remove carbon, casting and molding molten feed liquid, and annealing and cooling. The fused zirconia corundum brick has excellent compactness and crack resistance, and the service life of the fused zirconia corundum brick is greatly prolonged.

The invention discloses a powder metallurgy brake lining material, a preparation method and a brake lining, the powder metallurgy brake lining material is obtained by sintering powder, and the powder metallurgy brake lining material comprises the following raw materials in parts by mass: 67-70 parts of electrolytic copper powder; 12 to 17 parts of iron powder; 5-9 parts of tungsten; 12 to 18 parts of flaky graphite; 7-9 parts of molybdenum disulfide; 5-8 parts of zirconium dioxide; 7 to 11 parts of nano silicon dioxide; the interface metallographic phase of a sintered body is improved, the combinability of all components in the powder metallurgy brake pad material is enhanced, the deformation resistance of the powder metallurgy brake pad material at high temperature is provided for the powder metallurgy brake pad material, and when a high-speed train brakes and the temperature of the brake pad is rapidly increased, all the components in the powder metallurgy brake pad material are tightly combined and are not prone to disengagement; and heat fading of friction performance of the powder metallurgy brake lining material is inhibited, so that excellent friction performance and low abrasion loss of the brake lining under high-speed braking are guaranteed.

The invention belongs to the technical field of material preparation, and particularly relates to a method for electric field assisted laser additive manufacturing of a ZrO2-based ceramic cutting tool. According to the method, the electric field is applied in laser additive manufacturing, meanwhile, electrode plates, the electric field, laser machining parameters and materials used for machining in the electric field assisted laser additive manufacturing are optimized, the process of the obtained ceramic cutting tool preparation method is simple, and the obtained ceramic cutting tool has the excellent mechanical property, heat-conducting property, compactness and abrasion resistance.

The invention discloses a high-aluminum wear-resistant ceramic grinding ball and a preparation method thereof. The grinding ball comprises the following raw materials in percentage by weight: 85%-95% of aluminum oxide, 2%-10% of silicon dioxide, 1%-3% of calcium carbonate, 0.2%-0.5% of magnesium carbonate, 0.03%-0.05% of titanium dioxide, 0.01%-0.03% of sodium oxide and 1%-5% of modified zirconium dioxide. The preparation method of the modified zirconium dioxide comprises the following steps: adding hydrogen peroxide into a mixed solution of soluble cerium salt and soluble zirconium salt to obtain a reaction system; adding the reaction system into an alkaline solution for reaction, and collecting an insoluble substance after the reaction is finished; and calcining the insoluble substance to obtain the modified zirconium dioxide. The ceramic ball is simple in formula, rich in raw materials, low in price and low in production cost, the operation stability of the ceramic ball is improved, and the service life is prolonged.

The invention relates to the technical field of welding rod preparation, and discloses a steel matched welding rod for a high water head of a pumped storage power station and a production method of the steel matched welding rod. The coating is prepared from the following components in parts by weight: 25.0 to 36.0 parts of calcite, 26.0 to 35.0 parts of calcined fluorite, 3.0 to 6.7 parts of calcined natural rutile, 3.0 to 7.0 parts of quartz sand, 2.5 to 4.0 parts of spray silicon iron, 5.5 to 7.6 parts of nickel powder, 0.5 to 0.8 part of sodium carbonate, 0.3 to 0.6 part of CMC (Carboxymethyl Cellulose), 0.6 to 1.0 part of sodium alginate, 5.0 to 6.3 parts of low-carbon ferromanganese, 9.0 to 11.0 parts of atomized iron powder, 1.8 to 2.6 parts of ferrotitanium, 0.6 to 1.0 part of rare earth fluoride and 0.6 to 1.0 part of zirconium dioxide; the production method comprises the following steps: uniformly mixing the raw materials of the coating according to the ratio, adding the adhesive into the mixture, and uniformly mixing; and the mixture and the core wire are added into a plodder, the coating is prepared on the surface of the core wire, then low-temperature baking and high-temperature baking are conducted, and the welding rod is obtained.

The invention relates to preparation of a ZTA composite ceramic material, and belongs to the field of inorganic nonmetal composite materials. The raw material composition formula comprises aluminum oxide, zirconium oxide, zirconium dioxide, yttrium oxide, magnesium oxide and titanium dioxide. The low-sodium microcrystalline alumina powder with the original grain size of 0.40 [mu] m is selected and ground to the original grain size in advance, so that zirconia can be more uniformly distributed between alumina grain boundaries, which is a precondition for obtaining more uniform ZTA. Zirconium dioxide is creatively introduced, and compared with a conventional method in which stable zirconium oxide is directly used, the cost of ZTA is greatly reduced. The pre-calcined granulation powder is adopted, so that a ZTA product which is uniformly mixed in the early stage is cured by adding a stabilizer, and then the uniform and stable ZTA ceramic can be obtained through later-stage forming and firing.

The invention discloses a preparation method of nano zirconium dioxide dispersion liquid for display packaging, which comprises the following steps: adding a zirconium source and alkali into deionized water, uniformly stirring, and carrying out hydrothermal reaction to obtain nano zirconium dioxide particles; repeatedly washing the nano zirconium dioxide particles with deionized water to completely remove salt and alkali, and heating the nano zirconium dioxide particles in an organic acid solution at a certain temperature for a certain time to obtain a nano zirconium dioxide organic acid dispersion liquid; the oil / water property of the nano zirconium dioxide organic acid dispersion liquid is changed by using a dispersing agent and a coupling agent, so that nano zirconium dioxide particles can be dispersed in an organic solvent, and the nano zirconium dioxide dispersion liquid is obtained; nano zirconium dioxide particles in the nano zirconium dioxide dispersion liquid have the characteristics of high refractive index, small particle size, uniform form and concentrated particle size distribution. And the haze can be reduced and the original transmittance of the resin can be maintained when the resin is applied to packaging. And meanwhile, the optical waveguide has the characteristics of low viscosity, long-time stability and no settlement, and can meet the requirements of industrial packaging and nano-imprinting of optical waveguides.

The invention belongs to the technical field of electronic packaging, and relates to packaging slurry and a preparation method and application thereof. The invention provides a packaging slurry, the packaging slurry comprises glass powder and a carrier, the glass powder is composed of SiO2, B2O3, Al2O3, PbO, MgO and SrO, and the carrier is composed of SiO2, B2O3, Al2O3, PbO, MgO and SrO. The preparation method of the carrier comprises the following steps: mixing nano zirconium dioxide and an additive according to a mass ratio of 0.5: (1-2), and blending in a mixer for 3-5 hours, thereby obtaining the carrier, the additive is prepared from isooctyl acetate, gamma-aminopropyl trimethoxy silane, propylene glycol polyether and butyl carbitol acetate. The packaging slurry can improve the water resistance of the electronic device.

The present invention is a method for fluorescent detection of copper ions. The method uses an amino-functionalized zirconium dioxide nanotube array film as a carrier and rhodamine B as a fluorescent probe, and immobilizes copper ions and rhodamine B on the amino-functionalized zirconium dioxide nanotube array film carrier to prepare a detection sample, and the detection of copper ions can be achieved by testing the fluorescence intensity of the detection sample. The method is simple and easy to implement, has good detection performance, low cost, small amount of waste liquid, and the amino-functionalized zirconium dioxide nanotube array film carrier can be regenerated and reused.

The invention relates to the field of nano-coatings, in particular to a nano-coating for decomposing dirt on a photovoltaic panel based on a photocatalysis technology, the nano-coating is composed of a bottom layer and a self-cleaning layer, and the bottom layer is made of nano-silver; the self-cleaning layer comprises 60 to 70 parts of titanium dioxide nanoparticles, 10 to 20 parts of zinc oxide nanoparticles, 5 to 10 parts of ferric oxide nanoparticles, 5 to 10 parts of zirconium dioxide nanoparticles, 60 to 120 parts of a solvent, 1 to 3 parts of a dispersing agent, 0.5 to 1.5 parts of a thickening agent and 1 to 3 parts of an antirust agent; the bottom layer and the self-cleaning layer are creatively added on the outer side of the photovoltaic panel, the basic bottom layer has good conductivity, antibacterial property and corrosion resistance, the self-cleaning layer can effectively keep transparency of photovoltaic glass on the surface of the photovoltaic panel by constructing concave-convex structure roughness below 50nm, and the self-cleaning layer has good anti-corrosion performance. And the nanometer coating can effectively decompose organic matter dirt on the surface of the photovoltaic panel under the illumination condition, the cleaning frequency is reduced by 80% or above, and the manual operation and maintenance amount is reduced.

The invention provides a PDA-ZrO2 coated zinc anode, a preparation method thereof and a battery, and belongs to the technical field of electrochemical energy storage materials. According to the zinc anode, a polydopamine-zirconium dioxide composite protective layer is constructed on the surface of a zinc substrate. According to the composite layer, a polydopamine bottom layer is formed through self-polymerization of dopamine on the surface of the zinc foil, and then a zirconium dioxide layer is introduced on the polydopamine bottom layer through an in-situ mineralization method. The PDA-ZrO2 composite layer disclosed by the invention has the main advantages that the PDA-ZrO2 composite layer ingeniously combines the strong adhesive force, excellent flexibility and ion regulation and control capability of polydopamine and the high mechanical strength and chemical stability of zirconium dioxide. The synergistic effect of'soft and hard combination 'can effectively homogenize zinc ion flow, inhibit dendritic crystal growth and block side reaction caused by water molecules, so that the interface stability of the zinc metal anode is remarkably improved, and the cycle life of the zinc metal anode is remarkably prolonged. The preparation method is simple in process, mild in condition and easy for large-scale production.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a zirconium dioxide processing wastewater recycling device which comprises a treatment barrel, a partition plate, a feeding assembly and a control assembly, a mounting frame is fixed to the top of the treatment barrel, and a feeding pipe is rotatably mounted in the middle of the mounting frame; the partition plate is fixed to the bottom of the feeding pipe, and the interior of the treatment barrel is divided into a liquid storage cavity and a reaction cavity through the partition plate; the feeding assembly comprises a fixed pipe fixed to the lower portion of the partition plate, a movable pipe is arranged below the fixed pipe, a stirring rod is fixed to the side wall of the movable pipe, the middles of the adjacent ends of the fixed pipe and the movable pipe are connected through a movable rod, and a conveying channel is formed in the middle of the movable rod. The control assembly drives the movable rod and the ball body to move so as to control the water inlet hole to be intermittently opened or closed, so that a flocculating agent is intermittently added into wastewater, the flocculating agent and the wastewater are conveniently mixed by adding a small amount and multiple times, and the purification effect on the wastewater is improved.

The invention discloses a toughened glass ceramic and a preparation method thereof, and relates to the technical field of glass ceramics, and the toughened glass ceramic comprises the following components in percentage by weight: 64 to 68 weight percent of silicon dioxide, 22.67 to 26.5 weight percent of lithium oxide, 0.9 to 1.2 weight percent of antibacterial agent, 0.8 to 1.1 weight percent of modified mica powder, 1.98 to 2 weight percent of aluminum oxide, 1.78 to 1.8 weight percent of potassium oxide, 1.68 to 1.7 weight percent of zirconium dioxide, 1.19 to 1.2 weight percent of phosphorus pentoxide and 1 to 3 weight percent of calcium fluoride. According to the toughened glass ceramic and the preparation method thereof, a multi-scale anti-cracking network is formed through macroscopic crack deflection of mica and nanoscale phase change toughening of zirconium oxide, the fracture toughness is remarkably improved, zirconium oxide agglomeration can be reduced through interface optimization of modified mica powder, zirconium oxide is dispersed more uniformly, and the phase change potential is further exerted; due to high-temperature stability of aluminum oxide, antibacterial agent particles can be wrapped, and excessive volatilization or aggregation of the antibacterial agent particles in the sintering process is prevented; aluminum oxide is used as a'protective shell 'to delay the Cu < 2 + > release rate and realize long-acting antibiosis.

The invention discloses a high-zirconium brick as well as a preparation process and application thereof. The high-zirconium brick comprises the following components in percentage by weight: 65-99% of zirconium dioxide, 0.5-30.5% of aluminum oxide and 0.5-4.5% of yttrium oxide, titanium oxide, magnesium oxide, calcium oxide and silicon oxide in total. According to the method, heating and annealing cooling are controlled in a curve temperature control mode, all elements in the prepared high-zirconium brick are integrally uniform and free of segregation, the whole body density of the product is uniform and consistent, the defects of needle-shaped air holes, bubble retention, surface holes and the like do not exist, and the high-zirconium brick product prepared through the technological method is short in delivery cycle and can be produced in a customized mode.

The invention relates to the technical field of thermal insulation materials, in particular to a ceramic gel phase change energy storage self-thermal insulation structure and a preparation method thereof.Silicon dioxide sol and zirconium dioxide sol are mixed and then added with paraffin to prepare a phase change material, and the phase change material has the effects of enhancing the heat conduction performance and improving energy storage; the silicon dioxide and the zirconium dioxide both have good heat conduction performance, the heat conduction efficiency of the paraffin serving as the phase change material can be remarkably improved by mixing the silicon dioxide and the zirconium dioxide with the paraffin, heat can be transmitted and distributed in an energy storage structure more quickly, and the porous structure with high porosity serves as a carrier to bear the phase change material; the uniform distribution of heat can be facilitated, so that the heat-conducting property of the energy storage structure is further enhanced; the carbon fibers and the steel fibers are dispersed in the polyvinyl chloride to improve the strength of the polyvinyl chloride, and then the surface of the ceramic gel structure is coated with the polyvinyl chloride to package the phase-change material in the porous ceramic, so that the situation of leakage or performance degradation of the phase-change material is prevented to a certain extent.

The invention relates to a base metal high-voltage multilayer ceramic dielectric capacitor and a preparation method, the base metal high-voltage multilayer ceramic dielectric capacitor is formed by stacking and firing dielectric layers, and each dielectric layer comprises a dielectric layer and an electrode printed on the dielectric layer. The dielectric layer comprises the following raw materials: a BMYT main matrix, an NN material, magnesium oxide, manganous-manganic oxide, zirconium dioxide, calcium carbonate, strontium carbonate and rare earth oxide; through the raw material composition and the preparation method of the ceramic dielectric capacitor, the prepared ceramic dielectric capacitor has excellent performances of high dielectric constant, high voltage resistance, stable dielectric-temperature characteristic curve, low loss, high insulation resistance, long-term high-voltage reliability and the like under the condition of high dielectric thickness (30 microns before firing).

The invention provides a preparation method and application of a wear-resistant and corrosion-resistant glass flake coating, and belongs to the technical field of coatings. The coating comprises a component A and a component B, wherein the component A comprises an epoxy resin matrix, a reinforcing filler, a self-repairing microcapsule and an auxiliary agent; the epoxy resin matrix is formed by compounding at least two different types of epoxy resin components, the first epoxy resin component is matrix resin, and the second epoxy resin component is toughening modified resin; the reinforcing filler comprises glass flakes subjected to surface modification, functionalized graphene and nano zirconium dioxide particles; the self-repairing microcapsule comprises a microcapsule wall and a self-repairing agent coated in the microcapsule wall; the auxiliary agent comprises a rheological auxiliary agent, a defoaming agent and a wetting dispersant; and the component B comprises a curing agent and a curing accelerator. The comprehensive wear resistance and corrosion resistance of the coating can be remarkably improved, and the construction adaptability of the coating is improved.

The invention provides a preparation method of a multilayer reinforced alkaline water composite diaphragm. The preparation method comprises the following steps: S1, preparing raw materials; the raw materials comprise polysulfone, zirconium dioxide, polyethylene glycol, polyvinylpyrrolidone, potassium chloride, methyl pyrrolidone and a PEEK woven net; s2, preparing slurry; s3, preparing a film; the high-temperature alkaline electrolytic cell diaphragm has the beneficial effects that the PEEK woven mesh is adopted as the reinforced framework layer, the melting point of a PEEK material is 340 DEG C, the melting point of pps is about 280 DEG C, the heat resistance of the PEEK material is obviously higher than that of pps mesh cloth, and the heat resistance and safety of the diaphragm are greatly improved when the diaphragm is applied to a high-temperature alkaline electrolytic cell (greater than 100 DEG C) in the future.