76 results about "Oxychlorination" patented technology

The invention discloses a flexible lanthanum zirconate-alumina fiber membrane as well as a preparation method and application thereof, and belongs to the technical field of inorganic nonmetal ceramic fiber materials. The preparation method comprises the following steps: dissolving zirconium oxychloride octahydrate, lanthanum chloride heptahydrate and aluminum chloride hexahydrate into absolute methanol, sequentially adding acetylacetone and triethylamine, stirring, and drying under reduced pressure to obtain a zirconium-lanthanum-aluminum polymer precursor containing triethylamine hydrochloride; soaking the zirconium-lanthanum-aluminum polymer precursor containing triethylamine hydrochloride in acetone, standing, filtering, concentrating under reduced pressure, and drying to obtain a zirconium-lanthanum-aluminum acetylacetone polymer precursor; the preparation method comprises the following steps: preparing a spinning solution from a zirconium-lanthanum-aluminum acetylacetone polymer precursor, absolute methanol serving as a solvent and polyoxyethylene serving as a spinning aid, and carrying out electrostatic spinning on the spinning solution to obtain a lanthanum zirconate-aluminum oxide precursor fiber membrane; and performing heat treatment on the lanthanum zirconate-aluminum oxide precursor fiber membrane to obtain the flexible lanthanum zirconate-aluminum oxide fiber membrane. According to the preparation method, acetylacetone is added into zirconium oxychloride, lanthanum chloride and aluminum chloride for coordination to form a linear zirconium-lanthanum-aluminum acetylacetone polymer, so that the technical problem that lanthanum zirconate long fibers with high strength and good flexibility are difficult to obtain is solved.

The invention belongs to the technical field of rhenium alloy materials, and particularly relates to a high-strength rhenium alloy material and a preparation method thereof. The rhenium alloy material is prepared from the following raw materials in percentage by mass: 12 to 24 weight percent of molybdenum, 6 to 9 weight percent of niobium, 2 to 5 weight percent of cobalt, 1 to 3 weight percent of tungsten, 0.5 to 1.2 weight percent of modified tantalum carbide, 3 to 6 weight percent of high-entropy rare earth and the balance of rhenium and other inevitable impurities. The modified tantalum carbide is prepared by the following preparation process: adding tantalum chloride, zirconium oxychloride and phenolic resin into a mixed solution of acetylacetone and n-butyl alcohol, stirring for 1-2 hours under a heating condition, dropwise adding ammonia water, continuously stirring for 0.5-1 hour, and drying to obtain a precursor; calcining the precursor, and cooling to obtain the modified tantalum carbide. The rhenium alloy prepared through the method has high hardness, good bending strength and excellent high-temperature mechanical property.

The invention belongs to the technical field of zirconium oxychloride preparation, and particularly relates to a preparation method of zirconium oxychloride. The preparation method of the zirconium oxychloride comprises the following steps: (1) carrying out acid leaching on waste fused zirconia corundum brick powder; (2) alkali fusion roasting of filter residues; (3) leaching with hot water and refluxing with hydrochloric acid; (4) purification treatment; and (5) post-treatment. According to the preparation method of the zirconium oxychloride, the waste fused zirconia corundum brick powder is used as a raw material, the problem of solid waste disposal of retired waste fused zirconia corundum bricks of a glass kiln is solved, efficient recycling of resources is achieved, a non-renewable resource zircon sand raw material is partially replaced, and the production cost is reduced; the high-purity zirconium oxychloride is prepared through acid leaching, alkali fusion, hot water leaching, hydrochloric acid reflux conversion, purification and aftertreatment.

The invention relates to the technical field of alloy additives, and discloses a high-toughness corrosion-resistant manganese additive for aluminum alloy and a preparation and application method thereof.The additive is prepared from, by mass, 50-65 parts of nanometer manganese alloy powder, 10-18 parts of magnesium-zirconium composite modifier, 4-9 parts of titanate coupling agent, 3-6 parts of dispersing aid and 2-5 parts of high-temperature stabilizer; the magnesium-zirconium composite modifier is a compound system of magnesium nitrate and zirconium oxychloride, and the molar ratio of magnesium element to zirconium element in the magnesium-zirconium composite modifier is 3: 1-5: 1. The dispersion uniformity of the additive is larger than or equal to 96%, after the additive is added, the impact toughness of the aluminum alloy is improved by 45%, the salt spray corrosion resistance reaches 600 h or above, the high-temperature (300 DEG C) stability is improved by 30%, the additive is suitable for various aluminum alloy systems such as 2024 and 6063, the preparation cost is reduced by 22%, and the industrial prospect is wide.

The invention provides an ultrafast synthesis method of rare earth oxychloride. The ultrafast synthesis method comprises the following steps: step 1, preparing a powder precursor; and 2, putting the powder precursor into a graphite tube, and carrying out heat treatment by adopting a rapid Joule heating technology to obtain the rare earth oxychloride material. The method is simple in process, energy consumption is reduced by 90% or above compared with traditional roasting, no organic solvent is needed, and the product is high in crystallinity and controllable in morphology.

A catalyst for an oxychlorination process of hydrocarbons, a preparation method thereof, and a method for preparing an oxychlorination compound of hydrocarbons using the same.

The invention belongs to the technical field of adsorption materials, and particularly relates to a coupling adsorption material containing zeolite and biomass charcoal as well as a preparation method and application of the coupling adsorption material. The coupling adsorption material is composed of modified zeolite, modified coconut shell biomass charcoal and a silane coupling agent interface bonding layer. After the modified zeolite is modified by three steps of hydrochloric acid, ammonium oxalate and sodium chloride, skeleton exchange sites are unified to be Na < + > type, and the NH < 4 + > interception capability is enhanced; after the modified coconut shell biomass charcoal is oxidized by nitric acid and modified by zirconium oxychloride and phosphoric acid, ammonia nitrogen is removed through multi-mechanism synergy; after two-phase coupling, the ammonia nitrogen removal capability is superior to that of a single component. The silane coupling agent interface bonding layer effectively buffers interface thermal stress generated by mismatching of two-phase thermal expansion coefficients in the high-temperature regeneration process, inhibits microcrack initiation and expansion, guarantees the adsorption capacity stability after multiple regeneration cycles, and prolongs the service life of the material.

The invention discloses a preparation method of a composite nanofiltration membrane, which is characterized in that the surface of an ultrafiltration membrane is coated with natural low-cost biological materials carrageenan and sodium carboxymethyl cellulose, so that the environmental friendliness and technical feasibility in the field of water treatment are enhanced; the preparation method comprises the following steps: firstly preparing a composite membrane, then carrying out cross-linking modification on the surface of the membrane through aldol condensation reaction, and constructing a compact and stable three-dimensional network structure selection layer after cross-linking, so that the composite membrane keeps structural stability under extreme pH conditions and in an oxychlorination environment, meanwhile, the composite membrane is endowed with efficient nanofiltration performance, and the composite membrane can be practically applied to industrial chromium-containing wastewater.

The invention belongs to the technical field of petrochemical industry, and discloses a method for regenerating a platinum-tin dehydrogenation catalyst by using chlorinating agent steam, which comprises the following steps: adding a chlorinating agent into a bubbler, and adjusting a water bath to a preset temperature; preset gas is connected to the front end of the reactor through the bubbler; placing the inactivated platinum-tin dehydrogenation catalyst in a reactor, heating the reactor to a roasting temperature, and roasting in an oxygen-containing atmosphere; adjusting the temperature of the reactor to oxychlorination temperature, setting the preset flow of the preset gas, introducing oxygen-containing gas to stabilize the chlorinating agent of the influent section at the preset concentration, and treating for a period of time under the condition; the protective gas purges and displaces gas in the reactor and the pipeline; and adjusting the reactor to a reduction temperature, introducing a reducing gas, and carrying out a reduction reaction to obtain the regenerated platinum-tin dehydrogenation catalyst. Under the condition of not depending on ultra-low flow precise injection equipment, controllable adjustment and long-term stable maintenance of the ppm-grade chlorine content in the reaction atmosphere are realized.

The invention relates to the technical field of polyester synthesis, and discloses a preparation method of a composite metal catalyst and application of the composite metal catalyst in polyester synthesis, and the preparation method comprises the following steps: (1) weighing zirconium oxychloride to prepare a zirconium solution, weighing copper nitrate to prepare a copper solution, and weighing citric acid to prepare a chelating solution; (2) adding the chelating solution into a zirconium solution, heating and stirring, adding a copper solution, and continuously heating and stirring to obtain a mixed solution; (3) adding ammonia water into the mixed solution to adjust the pH value to 5-6 to obtain sol; (4) standing for gelation, removing impurities, and carrying out solvent replacement by adopting ethanol to obtain gel; and (5) drying and roasting the gel to obtain the composite metal catalyst. The composite metal catalyst with higher catalytic activity and selectivity is obtained by optimizing the preparation steps, the zirconium-copper ratio and other condition parameters, and the food-grade polyester product with high tensile strength, high viscosity and low haze is prepared by applying the composite metal catalyst to the polyester synthesis reaction.

The invention discloses a catalyst for preparing N-(1-ethyl propyl)-3, 4-dimethylaniline through continuous catalytic hydrogenation and a preparation method and application thereof, the catalyst comprises a carrier, and an active component platinum and an auxiliary component which are loaded on the carrier, the auxiliary component is at least one of sodium citrate, disodium ethylene diamine tetraacetate, sodium metavanadate, oxalic acid, zirconium oxychloride, yttrium nitrate or sodium carbonate; and the active component and the auxiliary component both account for 0.1-10% of the mass of the catalyst. The catalyst is used for preparing N-(1-ethyl propyl)-3, 4-dimethylaniline through hydrogenation, the reaction can be continuous, the safety performance is better, and the catalyst has high catalytic activity and stability.

The invention provides a metal chlorination and oxidation method based on an electromagnetic induction ceramic rotary furnace and the ceramic rotary furnace, and belongs to the technical field of metal reaction. The oxidation method comprises the following steps that a metal raw material is crushed and then mixed with a chlorinating agent and an oxidizing agent, and a mixed material is obtained; the rotating speed of the electromagnetic induction ceramic furnace is adjusted to be 5-30 r / min, and protective gas is introduced into the furnace; starting an electromagnetic induction power supply, heating an inductor in the furnace through an electromagnetic induction coil outside the furnace, raising the temperature in the furnace to a target reaction temperature, and keeping the temperature; continuously or intermittently feeding the mixed material into the electromagnetic induction ceramic furnace, and dynamically mixing under the rotation of the furnace body to carry out chlorination and oxidation reaction; a gaseous product generated by the reaction is recovered by a condensation system, and a solid product is discharged from a discharge end and then is collected. The method has remarkable advantages in the aspects of reaction efficiency improvement, environmental protection and the like, and has wide application prospects and market values.

The invention discloses a preparation method and application of a zirconium-based metal organic gel material, and the preparation method comprises the following steps: (1) adding zirconium oxychloride into distilled water, stirring and dissolving at room temperature to obtain a zirconium oxychloride solution; (2) adding trimesic acid into absolute ethyl alcohol, and stirring and dissolving at room temperature to obtain a trimesic acid solution; (3) mixing the zirconium oxychloride solution and the trimesic acid solution at room temperature, and continuously stirring to obtain a mixed solution; and (4) carrying out hydrothermal reaction on the mixed solution, naturally cooling to room temperature after the reaction is finished, and carrying out freeze drying to obtain the zirconium-based metal organic gel material. The prepared zirconium-based metal organic gel material is used for treating pulp wastewater with the pH value of 2-12 and containing lignin and / or humic acid organic matters, and the problem that when an existing metal organic gel material is used for treating the pulp wastewater, the pH application range is narrow can be solved.

This invention discloses a method and application for the industrial-scale preparation of zirconium-based composite nano-metal oxides based on MOF morphology, belonging to the field of zirconium-based multi-component composite material preparation and its application in new energy batteries. Porous zirconium dioxide is obtained by reacting 2-aminoterephthalic acid with zirconium oxychloride followed by pyrolysis to create pores. Then, a soluble salt containing magnesium, iron, and aluminum is uniformly precipitated into the reactant to prepare a zirconium-based ternary precursor material. Finally, the product is obtained through rapid plasma sintering. This method, based on MOF morphology inheritance and multi-level structure design of composite oxides, innovatively synthesizes a novel nano-additive for lithium-ion batteries. The zirconium-based composite nano-metal oxide product prepared by this invention exhibits uniform particle morphology distribution, high sphericity, and a high specific surface area. Furthermore, when used as a cathode material additive, this zirconium-based composite nano-metal oxide can improve the electrochemical performance of ternary lithium batteries.

The invention provides a method for preparing high-purity hafnium oxide by an alkali fusion crystallization method, which comprises the following steps: melting a hafnium oxide raw material, solid alkali and a fluxing agent to obtain an alkali fusion clinker; adding the alkali fusion clinker into deionized water, leaching and filtering to obtain hafnium hydroxide precipitate; adding the hafnium hydroxide precipitate into concentrated sulfuric acid to obtain a hafnium sulfate solution; adding hydrogen peroxide into the hafnium sulfate solution for oxidation pretreatment; evaporating, concentrating and crystallizing the hafnium sulfate solution subjected to oxidation pretreatment to obtain hafnium sulfate crystals; adding the hafnium sulfate crystal into concentrated hydrochloric acid, refluxing, evaporating, concentrating and crystallizing to obtain a hafnium oxychloride crystal; dissolving the hafnium oxychloride crystal in water, and adding oxalic acid to generate hafnium oxalate precipitate; and calcining the hafnium oxalate precipitate. According to the process, the purity of hafnium oxide is improved to 99.995% or above, the impurity content is lower than 10 ppm, and the process is short, low in cost and environmentally friendly.

The invention relates to a method for synchronously recovering germanium tetrachloride from a metal-state regenerated germanium raw material through oxychlorination, and belongs to the technical field of germanium extraction metallurgy. The method comprises the following steps: mixing a metal-state regenerated germanium raw material with hydrochloric acid in a chlorination distillation kettle, dropwise adding a hydrogen peroxide solution in sections to react with hydrochloric acid to generate a high-activity chlorine species, and directly oxidizing and chlorinating metal germanium to generate germanium tetrachloride. In the process, the reaction is a strong exothermic reaction, a product is distilled out by using heat released by the reaction, and the reaction temperature is controlled at 82-84 DEG C through a cooling medium. And after the reaction is basically completed, carrying out deep distillation through a heating medium, and finally condensing and collecting to obtain a germanium tetrachloride product. According to the method, a traditional multi-step process is integrated into one step, the process is short, alkali liquor does not need to be added, reaction heat is fully utilized, the energy-saving effect is remarkable, the germanium direct recovery rate is high, and the problems that a traditional method is long in process, high in energy consumption, large in auxiliary material consumption and low in direct recovery rate are effectively solved.

The application discloses a micro-slit net interface modified far-end strong sand-carrying fracturing fluid and a preparation method thereof, and relates to the technical field of oil and gas field exploitation. The fracturing fluid comprises, in terms of weight parts, 20-50 parts of low-molecular-weight polyacrylamide, 10-30 parts of polyhydroxyethyl acrylamide, 30-75 parts of diethylene glycol ethyl ether acetate, 2-10 parts of fumed silica, 3-12 parts of a titanate coupling agent, 2-7 parts of a gemini cationic surfactant, 2-7 parts of an alkyl polyoxyethylene ether, and 2-7 parts of an intermediate S. The intermediate S comprises, in terms of weight parts, 10-25 parts of zirconium oxychloride, 5-25 parts of sodium lactate, and 65-85 parts of diethylene glycol ethyl ether acetate. The preparation comprises the following steps: S1, preparation of the intermediate S; and S2, preparation of the finished product R. The fracturing fluid has the characteristics of high resistance reduction, low damage and strong sand carrying, and can realize gas guiding and oil increasing by modifying the surface characteristics of reservoir rocks, thereby improving the yield of oil and gas wells.

The invention relates to the technical field of concrete materials, and particularly discloses a preparation process and application of a zirconium-silicon-aluminum multi-core complexing type anti-cracking anti-dispersing agent, and the preparation process comprises the following steps: (1) dropwise adding a silicate solution into an aluminum sulfate solution, and shearing and stirring in the process to obtain a reaction solution a; (2) dropwise adding concentrated sulfuric acid into the reaction liquid a under a stirring condition, and heating for reaction after completion to obtain a reaction liquid b; (3) dropwise adding a modification solution formed by zirconium sulfate and zirconium oxychloride into the reaction solution b under a stirring condition, and reacting to obtain a reaction solution c; and (4) sequentially adding ATMP, liquid polyethylene glycol and tartaric acid into the reaction liquid c, and reacting under heating and stirring conditions. And adjusting the pH value of the reaction system to obtain the composite anti-cracking agent. The anti-cracking agent prepared by the invention can synchronously realize dispersion resistance, crack resistance and durability improvement, and solves the problem that dispersion resistance and crack resistance of underwater non-dispersible concrete are difficult to consider at the same time.

The utility model discloses a reaction device for co-producing trichloroethylene and tetrachloroethylene by using a dichloroethane oxychlorination method, and relates to a trichloroethylene and tetrachloroethylene preparation device, which comprises a dichloroethane storage tank, an HCL storage bottle, an oxygen storage bottle, a tubular reactor, a heating device, a primary preheater, a gas mixer and a fused salt heat conduction sleeve, the primary preheater is connected with the gas mixer, the HCL storage bottle and the oxygen storage bottle are respectively connected with the mixing pipe section, the mixing pipe section is respectively connected with an inlet of the gas mixer and the middle part of the tubular reactor, and the gas mixer is connected with the upper end of the tubular reactor; the fused salt heat conduction sleeve is sleeved outside the tubular reactor, heat conduction fused salt is arranged in the fused salt heat conduction sleeve, and the heating device is arranged outside the fused salt heat conduction sleeve. The method has the advantages that heat release is dispersed, local reaction pressure is small, and the yield ratio of trichloroethylene to tetrachloroethylene can be rapidly adjusted according to needs.

The invention relates to the cross technical field of new energy and chemical industry, in particular to a green-electricity-driven green ammonia-caustic soda-polyvinyl chloride co-production system and method, which comprises a renewable energy power generation unit, an air separation unit, a green ammonia synthesis unit, a waste salt treatment unit, an electrolytic sodium chloride unit, an ethylene oxychlorination unit and a polyvinyl chloride synthesis unit. According to the method, the limitation of a traditional single production mode is broken through, and two independent processes of hydrogen production through green electricity water electrolysis, nitrogen production through air separation and green ammonia synthesis and sodium chloride electrolysis, ethylene oxychlorination and polyvinyl chloride synthesis are innovatively and deeply coupled. Wherein the green electricity serves as a core energy source to drive sodium chloride electrolysis reaction, and in the process, green hydrogen as a byproduct in the electrolysis link is efficiently combined with nitrogen obtained by an air separation unit driven by the green electricity to be used for green ammonia synthesis; meanwhile, the byproduct oxygen of the green electricity air separation unit can be directly supplied to the ethylene oxychlorination unit, a key raw material is provided for vinyl chloride synthesis, and finally polyvinyl chloride is further processed and generated.

The invention provides a fiber-reinforced silicon zirconium oxide composite aerogel thermal insulation material and a preparation method thereof, and belongs to the technical field of thermal insulation materials. The invention relates to a fiber-reinforced silicon zirconium oxide composite aerogel thermal insulation material and a preparation method thereof. The preparation method comprises the following steps: providing silicon oxide fibers, and carrying out pretreatment to obtain a silicon oxide fiber preform; the preparation method comprises the following steps: preparing cerium-doped titanium dioxide nanoparticles from tetrabutyl titanate, cerium nitrate, absolute ethyl alcohol and water by adopting a sol-gel method; the preparation method comprises the following steps: adding a silicon source and zirconium oxychloride into an ethanol solution, stirring, adjusting the pH value to 3.0-4.0, adding cerium-doped titanium dioxide nanoparticles, and continuously stirring to form sol; and S3, soaking a silicon oxide fiber preform into the sol prepared in the step S3, pressurizing to fill the silicon oxide fiber preform with the sol, and after gelation, performing aging treatment, freeze drying and heat treatment to finally obtain the product. On the basis of improving the thermal insulation performance of the product, the mechanical property of the product is improved, and the phenomena of shrinkage, collapse and the like generated in the use process of the product are reduced.

The application discloses a lanthanum-based oxychloride nanocrystal-amorphous composite solid electrolyte material and a preparation method and application thereof. a O b ] unit, 1<=a<=5, 1<=b<=5; wherein the chemical general formula of the solid electrolyte material is Li 2x Ta 0.25 La 0.5 Cl 2.75 O x , 0.15<=x<=0.2. The preparation method of the solid electrolyte material is used for preparing a solid electrolyte or a composite positive electrode of a lithium ion solid battery. By introducing an oxygen-containing precursor Li2O to replace LiCl, the application utilizes oxygen to preferentially coordinate with Ta to form a distorted [TaCl a O b ] unit to produce local amorphization, and forms a nanocrystal-amorphous composite structure. The composite structure retains a complete one-dimensional ion transmission channel of the LaCl3 skeleton, and provides an additional three-dimensional ion seepage network through the amorphous phase, thereby significantly improving ion conductivity, and having good electrochemical stability and mechanical deformation capacity, and exhibiting high ion conduction capacity, a wide electrochemical window and excellent cycle stability in a solid battery system.

This invention discloses a zirconium-yttrium bimetallic MOF adsorbent, its preparation method, and its applications. The preparation method includes: adding deprotonated 2-aminoterephthalic acid dropwise to a mixed solution containing zirconium chloride, yttrium chloride, and glacial acetic acid, stirring at room temperature to obtain the zirconium-yttrium bimetallic MOF adsorbent. The adsorbent is then added to water containing a certain concentration of As and / or P, and adsorbed by isothermal shaking to remove As and / or P from the water. This invention enhances the adsorption activity for As and / or P through the special coordination and electrostatic interactions between zirconium and yttrium bimetals and As and P. The zirconium-yttrium bimetallic MOF adsorbent prepared by this invention uses a green synthesis route with room temperature doping, requiring no high-temperature operation. The adsorbent can be reused, with minimal waste, and can remove As and / or P from water. It has low preparation and usage costs, is environmentally friendly, and has a wide range of applications.

This utility model discloses an oxychlorination gas dryer, which consists of a gas drying tank and a gas inlet cooling assembly. The gas drying tank has a tank body, with an inlet pipe fixed to the lower end and an outlet pipe fixed to the upper end. Multiple inverted U-shaped tubes are fixed in a circular array at the top of the inlet pipe. A certain volume of concentrated sulfuric acid solution is placed inside the tank, with the tops of the inverted U-shaped tubes submerged in it. A backflow check valve is installed at the bottom of the inlet pipe to prevent gas backflow. The gas inlet cooling assembly includes a cooling tank, with multiple TEC semiconductor cooling chips adhered in a circular array on its outer surface. A cooling fan is fixedly connected to the heating end of the cooling tank. During operation, the oxychlorination gas is first cooled by the cooling assembly before entering the drying tank. It is then dispersed into the concentrated sulfuric acid solution through the inlet pipe and the inverted U-shaped tubes to remove moisture. The dried gas is discharged from the outlet pipe. This dryer can effectively reduce the moisture content of oxychlorination gas and improve the drying effect.

The invention relates to a preparation method and application of an efficient adsorption composite flocculant, and belongs to the technical field of flocculants for water quality purification. The preparation method comprises the following steps: slowly adding ammonia water into a zirconium oxychloride aqueous solution, heating, stirring, standing at room temperature, adding a silane coupling agent solution in an inert gas environment, and continuously stirring to obtain a mixed solution A; preheating the mixed solution A, adding EPTAC, and stirring at a constant temperature to obtain a mixed solution B; and in an inert gas environment, adding a reaction monomer into the mixed solution B, mixing, adding an initiator, stirring, reacting, standing at room temperature, cutting a gel material into pieces, soaking, taking a precipitated solid, putting the precipitated solid into a drying oven, drying in vacuum, and grinding, thereby obtaining the product. The composite flocculant prepared by the invention has efficient adsorption capacity and cationic charge characteristics, can strongly capture negatively charged colloidal particles in water, has a good water purification effect, and has excellent turbidity purification performance.

The invention relates to a thermoplastic resin composite material and a preparation method thereof.The thermoplastic resin composite material is prepared through the following steps that copper oxychloride, sodium hydroxide, absolute ethyl alcohol and deionized water are added into a reaction vessel for a reaction, a solution A is obtained, filtered, washed and dried, mesoporous copper oxide is obtained, palygorskite is placed in a crucible to be ground into powder, the powder is sieved through a 500-mesh sieve, and the mesoporous copper oxide is obtained; adding tartaric acid, salicylaldehyde, mesoporous copper oxide, the palygorskite powder, absolute ethyl alcohol and deionized water into a reaction vessel for reaction to obtain a solution B, filtering, washing and drying to obtain a functional filler; the thermoplastic resin, the functional filler and the antioxidant are mixed and stirred uniformly to obtain a mixture, and the mixture is extruded and granulated from an extruder to obtain the composite material. The thermoplastic resin composite material has good antibacterial performance and VOC performance.

The invention provides a preparation method of a hole sealing coating for a plasma spraying thermal barrier coating, and relates to the technical field of high-temperature thermal insulation materials. The hole sealing coating comprises the following raw materials in parts by weight: 40-50 parts of ammonia water (with the concentration of 25%), 30-50 parts of enamel powder, 30-50 parts of functional powder, 20-30 parts of zirconium oxychloride, 20-30 parts of yttrium chloride, 5-10 parts of ytterbium nitrate, 5-10 parts of gadolinium nitrate, 5-10 parts of dysprosium nitrate, 5-10 parts of chromic nitrate, 5-10 parts of tantalum pentoxide, 5-10 parts of niobium pentoxide, 3-5 parts of titanium dioxide, 3-5 parts of silicon dioxide, 3-5 parts of a binder, 60-90 parts of absolute ethyl alcohol and 40-60 parts of a solvent. The nano ceramic powder is prepared by using a hydrothermal reaction method, then the enamel powder, the nano ceramic powder and the like are mixed, wet grinding, drying, tabletting and calcining are performed to prepare a ceramic block which is applied to film plating, and the hole sealing coating is high in density and bonding strength, and can slow down the transmittance of oxygen, improve the oxidation resistance, improve the radiation coefficient of the coating and prolong the service life.

The invention provides high-flexibility high-temperature-resistant silicon-based aerogel and a preparation method thereof. The preparation method of the silicon-based aerogel comprises the following steps: (1) uniformly mixing polyvinyl alcohol, methyltrimethoxysilane and glutaraldehyde, adjusting the pH value of a system to 4-5, stirring for 1.5-2 hours at normal temperature, adjusting the pH value of the system to 8-9, standing to obtain wet gel, and aging and drying to obtain gel; (2) soaking the gel obtained in the step (1) into an ethanol solution of aluminum isopropoxide, reacting at 55-65 DEG C for 3.5-6 hours, and taking out the gel; and (3) immersing the system obtained in the step (2) into an aqueous solution of zirconium oxychloride, and reacting at 75-85 DEG C for 1.5-3 hours. The silicon-based aerogel obtained through the preparation method has good brittleness and good high-temperature resistance, and the problem that the brittleness and the high-temperature resistance of traditional aerogel cannot be considered at the same time is solved.

Bismuth oxyhalide composite material for filtering ultraviolet radiation. The present invention relates to the use, preferably cosmetic, of a composite material P comprising one or more particles of bismuth oxyhalide(s) (a), in particular bismuth oxychloride, and its solvates, such as its hydrates, the largest average dimension of said particles being less than 400 nm; and at least one chemically inert compound (b), selected from (b)i) organic compounds with a carboxy group, (b)ii) polymers, (b)iii) silicon organic compounds, and (b)iv) inorganic compounds, or mixtures thereof, for filtering UV radiation, preferably UV-B, as well as processes for preparing and composing cosmetic compositions. Figure for abstract: None

This application relates to the field of catalyst technology, specifically to an oxychlorination catalyst and its preparation method, and particularly to the application of this catalyst in the oxychlorination fluidized bed process of ethylene. The oxychlorination catalyst described in this application is an alumina-supported catalyst. By controlling the range of sodium content in the raw materials and adjusting the ratio of catalyst acidity on the low-temperature side (100-262℃) to catalyst acidity on the high-temperature side (262-400℃) in the ammonia-temperature desorption method to between 0.5 and 3.5, the oxychlorination catalyst exhibits high activity and high stability, and can be used in the technical field of oxychlorination of ethylene to produce dichloroethane.