401 results about "Zirconium dioxide" patented technology

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 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 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 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 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 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 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 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.

A particulate mesoporous nanocomposite having the general formula ZrO2·Mg6MnO8, wherein the nanocomposite comprises a monoclinic zirconium dioxide (ZrO2) crystalline phase, a tetragonal ZrO2 crystalline phase, and a cubic magnesium manganese oxide (Mg6MnO8) crystalline phase. The nanocomposite may be obtained by a method comprising: forming an aqueous mixture by adding an aqueous solution of a chelating agent into an aqueous solution of a magnesium salt, a manganese salt and a zirconium salt; adding a polyol in the aqueous mixture to form a gel; heating the gel under stirring at a temperature of about 200° C. to about 400° C. for a sufficient duration to form a dry powder; and, calcining the dry powder at a temperature of about 700° C. to about 1000° C. to form the nanocomposite material.

A glass composition includes silicon dioxide, aluminum oxide, diboron trioxide, fluorine, zinc oxide, a first component including calcium oxide, and a second component including zirconium dioxide and manganese oxide. Based on 100 wt % of the glass composition, the silicon dioxide is present in an amount ranging from 52 wt % to 62 wt %, the aluminum oxide is present in an amount ranging from 8 wt % to 13 wt %, the diboron trioxide is present in an amount ranging from 19 wt % to 31 wt %, and the fluorine is present in an amount of greater than 0 wt % and not greater than 2 wt %. Based on 100 wt % of the glass composition, the zinc oxide is present in an amount of equal to or greater than 0 wt % and less than 0.25 wt %. A glass or a glass fiber including the glass composition, and a product including the glass fiber are also provided.

The invention relates to the technical field of medical instruments, in particular to a medical magnesium alloy anchor and a preparation method thereof.The technical scheme includes that the medical magnesium alloy anchor comprises an anchor material, and the anchor material is a magnesium alloy anchor outer structure support formed by at least one of zirconium dioxide prepared through 3D printing, polycaprolactone and PLGA; the composite amorphous alloy prepared from the other three kinds of magnesium, zinc and calcium alloy powder is filled in pores of the support, and finally surface treatment is carried out on the surface of the anchor. Compared with a traditional magnesium alloy anchor nail, a stable supporting structure is provided for the anchor nail by means of the 3D-printed outer structure support and the internal high-strength amorphous composite magnesium alloy, the structural stability after implantation can be effectively maintained through the structural design, and the stability of the anchor nail is improved. The instant loss of mechanical properties caused by pitting corrosion cannot occur after corrosion, and the problems of structural integrity damage, deformation, displacement and the like possibly caused by early corrosion of a traditional anchor in a bone are solved.

The zirconium dioxide raw material feeding equipment with the cleaning function comprises a feeding frame and a feeding mechanism connected to the feeding frame, the feeding mechanism comprises a motor, two rotating rollers and a conveying belt, the motor is used for driving the rotating rollers to rotate, the two rotating rollers are in transmission connection through the conveying belt, and the conveying belt is used for conveying zirconium dioxide raw materials. One end of the bottom of the feeding frame is connected with a discharging plate used for scraping materials on the surface of the conveying belt, the discharging plate is connected with a beating mechanism used for beating the discharging plate, the rotating roller is connected with a transmission mechanism, and the transmission mechanism is connected with the beating mechanism. The discharging plate can scrape materials attached to the surface of the conveying belt, the materials slide down along the side face of the discharging plate, the conveying belt can be cleaned, meanwhile, the materials can be fully utilized conveniently, the waste phenomenon is avoided, the beating head conducts beating operation on the discharging plate, generated vibration enables the materials to slide down smoothly, and the conveying belt is prevented from being damaged. And manual cleaning operation is not needed.

The invention relates to an environment-friendly chemical-resistant high-pressure hydrogen transmission and storage coating and a preparation method thereof, and belongs to the technical field of hydrogen permeation resistance. Montmorillonite is modified by methyl dodecyl bis (hydroxyethyl) ammonium chloride, and zirconium oxide is deposited on the surface of the montmorillonite to form the composite filler. According to the composite filler, the compatibility and dispersity with a polymer matrix are remarkably improved, hydrogen molecules are effectively adsorbed and anchored by using oxygen vacancies in zirconium dioxide, and diffusion and permeation of hydrogen are further hindered. The cellulose nanocrystals are modified through stearic acid, hydrophobic groups are successfully introduced, the agglomeration phenomenon of the cellulose nanocrystals is remarkably weakened, and the dispersity and compatibility of the cellulose nanocrystals in a waterborne polyurethane emulsion are improved. The modified cellulose nanocrystals provide excellent hydrogen resistance, chemical resistance and mechanical strength for the coating, a highly compact structure is formed, hydrogen leakage is effectively prevented, pores and defects of the coating are reduced, and compactness and hydrogen resistance of the coating are improved.

The invention relates to a sintered molding with a color gradient for use in the manufacture of dental restorations, obtainable by sintering a compression-molded element comprising five or more different ceramic powder layers, each powder layer comprising at least two different base powders and each base powder containing at least 80 wt. % ZrO2, each weight amount being relative to the total weight of the base powder.

The invention relates to the technical field of metal superfine powder preparation, in particular to a manufacturing process of nanoscale zirconium powder for electric vacuum, high-purity sponge zirconium is used as a raw material, and after being crushed by zirconium oxide equipment, the high-purity sponge zirconium is subjected to wet ball milling, freeze drying, low-temperature vacuum deoxidation and two-step passivation in an inert atmosphere. During wet ball milling, a potassium iodate-polyvinylpyrrolidone coating aid is added, so that iodate radicals are slowly released and generate a compact zirconium dioxide passivation film with zirconium powder, iodide ions are adsorbed, oxidation and agglomeration are inhibited, and steric hindrance of polyvinylpyrrolidone further stabilizes the particle size; the iodine element is sublimated and removed through low-temperature vacuum deoxidation treatment, polyvinylpyrrolidone is completely decomposed, the oxygen content of the zirconium powder is controlled to be 0.10-0.15 wt%, the particle size of a final product is 30-40 nm, the span is smaller than or equal to 2.0, and the oxygen content is smaller than or equal to 0.15%, and the zirconium powder manufactured through the method is narrow in particle size distribution, low in key impurity content and high in purity and is suitable for electric vacuum devices.

The invention discloses a prime coat current collector and a preparation method thereof, a pole piece and a battery. The prime coat current collector comprises a polymer base material layer, a metal layer and a lithium iron phosphate material layer, metal layers are respectively arranged on two side surfaces of the macromolecular base material layer; lithium iron phosphate material layers are respectively arranged on the metal layers on the two sides; the lithium iron phosphate material layer comprises the following components: lithium iron phosphate, zirconium dioxide and a conductive material. According to the scheme of the base coating current collector, the lithium iron phosphate material layer is used for replacing a traditional carbon coating layer, components of the base coating current collector are optimized, zirconium oxide is introduced into the lithium iron phosphate material layer and is compounded with a ternary material, and triple improvement of structure strengthening, interface optimization and performance collaboration is achieved; the bottlenecks of a single material in the aspects of energy density, safety, cycle life and the like are solved.

The invention discloses a novel antibacterial environment-friendly ceramic and a preparation method thereof, and belongs to the technical field of ceramics, the method comprises the following steps: dissolving aluminum chloride, barium nitrate and ferric nitrate in a solvent, and stirring and mixing to prepare a first mixed solution; adding kaolin and carbon powder into the first mixed solution, and stirring and mixing to obtain a second mixed solution; boron, carbon, aluminum, boron oxide, zirconium dioxide and barium carbonate are dispersed in a dispersing agent to be mixed to prepare a third mixed solution; boron oxide, aluminum hydroxide, titanium boride, zirconium, silicon, sodium zirconate, sodium carbonate, calcium tungstate and zirconium dioxide are added into the second mixed solution to be stirred and mixed, and mixed slurry is prepared; the mixed slurry is used for preparing a blank body, the blank body is placed in a sintering furnace to be sintered in different temperature stages and sintering environments, and the prepared ceramic has high strength, is not prone to cracks in the environment where the temperature changes rapidly and is good in corrosion resistance.

The invention discloses modified zirconium dioxide, a water phase modification method and application of the modified zirconium dioxide in rubber. The aqueous phase modification method comprises the following steps: adding zirconium dioxide nanoparticles into water to prepare slurry; a silane coupling agent is dropwise added into the slurry, the dropwise adding rate is 0.5-30 mL / min, after dropwise adding is finished, stirring continues to be conducted for 2-20 hours, solids are separated out, washing and drying are conducted, and the modified zirconium dioxide is obtained. According to the invention, water is used as a modification system solvent, the silane coupling agent is used for modifying zirconium dioxide, and the dropwise adding rate of the silane coupling agent is specially controlled, so that the modification process is controlled; the modification process is simple in technology and does not need an organic solvent. And after the zirconium dioxide nanoparticles are modified, double-bond groups are introduced, so that the cross-linking effect between the zirconium dioxide nanoparticles and the rubber is enhanced, and the mechanical property of the composite material is improved.

The invention relates to the technical field of brazing, in particular to a low-temperature preparation method of a nickel-titanium alloy / zirconia ceramic corrosion-resistant joint. In order to solve the problems that an implantable medical device prepared through an existing NiTi shape memory alloy and zirconia ceramic connecting method is poor in biocompatibility and not suitable for long-term service in a human body, the invention provides the NiTi shape memory alloy and zirconia ceramic low-temperature indirect brazing method which is good in biocompatibility and excellent in corrosion resistance. The brazing method comprises the following steps: (1) preparing metallized brazing filler metal; (2) metalizing the zirconia ceramic; (3) brazing the NiTi alloy and the zirconia ceramic; after the obtained joint is subjected to an electrochemical test in SBF simulated body fluid, the corrosion resistance is good; the highest strength of a brazed joint is 31 MPa, and the use strength of an implantable medical device can be met.

The present invention relates to a method for manufacturing an antibacterial polyurethane lens using coated silver ion-loaded zirconium dioxide. First, the inner and outer surfaces of a resin lens are hardened, and the resin lens is immersed in an organosilicon solution. After the organosilicon adheres to the inner and outer surfaces of the resin lens, the lens is oven-cured. The polyurethane lens hardened sheet with the cured surface is then vacuum-coated to deposit materials of different refractive indices on both sides of the resin lens hard film. Subsequently, silver ion-loaded zirconium dioxide is used as a coating material and vacuum-coated on both surfaces of the lens to achieve the antibacterial effect of the lens. The present application prepares silver ion-loaded zirconium dioxide particles, and the silver ions are evenly dispersed and can be evenly distributed on the lens surface, so that the antibacterial properties of the upper and lower surfaces of the lens are consistent. The silver ion-loaded zirconium dioxide particles are directly used as the lens coating material, which optimizes the coating process of the antibacterial polyurethane lens, and the polyurethane lens obtains a good antibacterial effect.