302 results about "White powder" patented technology

The invention provides an antifouling self-cleaning fluorocarbon finish paint as well as a preparation method and application thereof, and particularly relates to the technical field of special coatings. The antifouling self-cleaning fluorocarbon finish paint is composed of a component A and a component B in a ratio of (80-87): 16, the component A is prepared from the following components in parts by weight: 560 to 580 parts of fluorocarbon resin, 30 to 35 parts of a first solvent, 20 to 40 parts of a second solvent, 180 to 220 parts of titanium dioxide, 90 to 110 parts of filler, 11 to 20 parts of a light stabilizer, 3 to 5 parts of a thickening agent and 13 to 28 parts of an auxiliary agent; the component B comprises the following components in parts by weight: 20-22 parts of fluorocarbon resin, 4-5 parts of a chain extender, 15-20 parts of a diamine curing agent, 15-20 parts of a polyamine curing agent and 25-35 parts of a second solvent. According to the finishing paint, on the basis of enhancing the self-cleaning capability, the weather resistance of a coating is improved, and the aging and damage of the coating are delayed, so that the service life of the coating is prolonged.

The invention provides titanium-containing anhydrous stemming for a blast furnace and a preparation method of the titanium-containing anhydrous stemming, and belongs to the technical field of refractory materials for the blast furnace. The titanium-containing anhydrous stemming for the blast furnace comprises the following raw materials: 40-60 parts of titanium corundum, 5-15 parts of silicon carbide, 10-20 parts of ferro-silicon nitride fine powder, 5-15 parts of titanium dioxide fine powder, 5-15 parts of vanadium-titanium slag fine powder, 5-10 parts of coke fine powder, 1-5 parts of monatomic silicon fine powder, 1-5 parts of ball clay micro powder, 1-5 parts of aluminum nitrate micro powder and 1-2 parts of magnesium alon micro powder. Gas-phase substances of Si (g), Al (g) and Mg (g) can be formed in the stemming at high temperature by the monatomic silicon fine powder and the MgAlON micro powder in the raw materials and react with CO and N2 in the environment to generate ceramic whiskers such as SiC, Si3N4, AlN and MgAl2O4, and the generated ceramic whiskers are distributed in a staggered manner and are filled in pores of the stemming, so that the high-temperature strength and the volume stability of the stemming are remarkably improved.

The invention provides insulating coating ink, an insulating coating, a preparation method of the insulating coating and a battery, and belongs to the technical field of insulating coatings, and the insulating coating ink comprises a prepolymer, a monomer, toner and a photoinitiator. In the toner, the mass ratio of phthalocyanine blue is 60%-90%, the mass ratio of phthalocyanine green is 0%-30%, and the mass ratio of titanium dioxide is 10%-40%. In the photoinitiators, the mass ratio of the cracking type free radical photoinitiator is 50%-90%, and the mass ratio of the hydrogen abstracting type free radical photoinitiator is 10%-50%; in the cracking type free radical photoinitiator, the mass ratio of the short-medium wave absorption initiator is 40-70%, and the mass ratio of the long-wave absorption initiator is 30-60%. In the insulating coating ink, the mass ratio of the photoinitiator is 1%-5%, and the mass ratio of the toner is 0.2%-1.5%. The insulating coating ink provided by the invention can improve the heat resistance, weather resistance, wear resistance and aging and yellowing resistance of an insulating coating.

The invention provides a protective coating for a fuel storage and transportation cabin and a preparation method thereof, the protective coating comprises a primer layer, and the primer layer comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 20 to 40 parts of phosphorylated-sulfur heterocyclic modified epoxy resin, 0.1 to 1 part of dispersing agent, 0.1 to 1 part of flatting agent, 0.1 to 1 part of defoaming agent, 0 to 10 parts of n-butyl alcohol, 0 to 10 parts of xylene, 10 to 15 parts of zinc phosphate, 0.5 to 1.0 part of thixotropic agent, 10 to 15 parts of flaky filler, 20 to 35 parts of talcum powder, 5 to 10 parts of barite powder and 3 to 10 parts of titanium dioxide; the component B is prepared from the following raw materials in parts by weight: 99 to 100 parts of amino resin and 0.3 to 0.8 part of a catalyst. Phosphorylation-sulfur heterocycle is utilized to modify epoxy resin, a phosphating group (P-O-C) is generated, the lipophobicity is increased, an intrinsic anti-swelling network is constructed based on a sulfur / phosphorus atom covalent bonding epoxy skeleton, and by utilizing the three-dimensional shielding effect of phosphorus atoms and the high-density cross-linking characteristic of thioether bonds, the anti-swelling performance of the epoxy resin is improved. Fuel oil permeation channels are blocked from the molecular level, pollutant dissolution is inhibited, and it is ensured that the coating has good soaking resistance to fuel oil.

The invention belongs to the technical field of brominated flame retardant synthesis, and particularly provides a decabromodiphenyl ethane bromine distillation process chlorination bromine removal process, which comprises the following steps: S1, adding bromine into a reaction kettle, adding a catalyst, and mixing; cooling and dropwise adding molten diphenylethane; then heating, carrying out a heat preservation reaction, and cooling to obtain a brominated crude product; s2, S201, adding the brominated crude product obtained in S1 into a bromine steaming kettle, and heating; s202, chlorine is introduced, and the total amount of bromine and chlorine is detected; carrying out segmented control on the introduced chlorine according to the total amount of bromine and chlorine; s203, when the total amount of bromine and chlorine is reduced to a threshold value, stopping introducing chlorine, standing, cooling, and introducing nitrogen; s3, filtering the feed liquid in the bromine steaming kettle, washing and purifying for three times, and finally, centrifugally dewatering to obtain a faint yellow solid; and S4, adding the faint yellow solid into a high-temperature jet mill, performing high-temperature aging to obtain white powder, and then performing jet milling on the white powder to obtain a finished product. Physical distillation is replaced by chemical replacement, so that bromine is highly separated.

The invention relates to an ultra-pure calcium fluoride crystal raw material and a preparation method thereof. The preparation method of the hyperpure calcium fluoride CaF2 crystal raw material comprises the following steps: (1) respectively weighing a calcium source and a fluorine source according to the stoichiometric ratio of elements in CaF2, and carrying out vacuum drying to remove adsorbed water and bound water so as to obtain a dehydrated calcium source and a dehydrated fluorine source; (2) mixing the dehydrated calcium source, the dehydrated fluorine source and absolute ethyl alcohol, and carrying out ball milling to obtain a white pasty mixed raw material; and (3) carrying out vacuum high-temperature heat treatment on the white pasty mixed raw material, carrying out solid-phase reaction on calcium ions and fluorine ions to generate calcium fluoride, cooling after the reaction is finished to obtain white powder, and grinding and crushing to obtain the ultra-pure calcium fluoride crystal raw material.

The invention belongs to the technical field of spinning auxiliaries for synthetic fiber processing, and particularly relates to polyethylene fiber FDY spinning oil as well as a preparation method and application thereof. The polyethylene fiber FDY spinning oil comprises a smoothing agent, a wetting agent, an emulsifier, an antistatic agent, a functional additive, deionized water and a wear-resistant agent, wherein the wear-resistant agent is one or more of phenyl dicarbazole phosphate, sulfurized isobutylene and triphenyl phosphate, and the mass percentage content of the wear-resistant agent in the spinning oil agent is not greater than 5%. By adding the wear-resistant agent with appropriate variety and appropriate dosage, not only can the wear resistance of the spinning oil be improved, but also the wettability and stability of the spinning oil can be improved through the synergistic effect of the components. When the spinning oil is used for polyethylene fiber FDY spinning production, the problems of broken ends, white powder and the like in the spinning production process can be obviously improved, and meanwhile it is guaranteed that a polyethylene fiber filament product obtained through FDY processing has excellent quality.

The invention discloses a method for preparing titanium-doped iron phosphate from a titanium dioxide by-product ferrous sulfate, which comprises the following steps: (1) heating and dissolving the titanium dioxide by-product ferrous sulfate in a solvent to form a ferrous sulfate supersaturated solution; (2) adding a precipitant into the ferrous sulfate supersaturated solution for reaction, and cooling to separate out a mixed solid of ferrous sulfate crystals and titanium-containing precipitates after the reaction is finished; (3) taking the saturated ferrous sulfate mother liquor as a solvent, repeating the step (1) and the step (2), and combining the mixed solid obtained by repeating each time and the mixed solid in the step (2) to obtain a total mixed solid; and (4) dissolving the total mixed solid with sulfuric acid to form an iron-titanium solution, sequentially adding phosphoric acid, hydrogen peroxide and phosphorus salt into the iron-titanium solution, mixing, filtering to obtain a titanium-doped iron phosphate precursor, and heating, aging, filtering, washing, drying and calcining the titanium-doped iron phosphate precursor to obtain the titanium-doped iron phosphate product.

The utility model discloses a kind of reaction kettle with self-cleaning effect for carving white powder processing, including outer kettle body, the inside of outer kettle body is equipped with inner kettle body, two fixed rings are fixed between outer kettle body and inner kettle body, rotatingly connected with rotating rod in the inside of inner kettle body, the outside wall of rotating rod is fixed with multiple stirring rods, the inside sliding connection of stirring rod has moving rod, the end of moving rod away from stirring rod is fixed with fixed plate, after reaction kettle is used, start hydraulic rod, hydraulic rod pushes circular ring and rotating ring to move, rotating ring extrudes movable rod, movable rod pushes fixed frame and fixed rod to move, fixed rod moves with moving rod, fixed plate and brush silk, brush silk and inner kettle body contact, start motor, make brush silk clean inner kettle body, clean, hydraulic rod retracts, in this way, brush silk and inner kettle body separate, reduce the contact of brush silk and inner kettle body, reduce the wear degree of brush silk, prolong service life.

The invention relates to (Z)-5-hydroxy-3-methyl-pent-2-enamide and application thereof, in particular to a novel compound (Z)-5-hydroxy-3-methyl-pent-2-enamide extracted and separated from secondary metabolites of Fusarium acuminatum, the novel compound (Z)-5-hydroxy-3-methyl-pent-2-enamide is white powder, the molecular formula of the novel compound (Z)-5-hydroxy-3-methyl-pent-2-enamide is C6H11NO2, and a quasi-molecular ion peak given by a high-resolution mass spectrum is [2M + Na-CO] + 253.1543; the invention relates to an application of (Z)-5-hydroxy-3-methyl-pent-2-enamide in preparation of a medicine for reducing blood sugar, in particular to an application of (Z)-5-hydroxy-3-methyl-pent-2-enamide.

The invention is suitable for the technical field of materials, and discloses silica gel and a preparation method thereof, and a silica gel product and a preparation method thereof. Wherein the silica gel comprises a first component and a second component, the first component comprises a base material, a reinforcing agent, a modified filler, titanium dioxide and a vulcanizing agent, and the second component comprises a base material, a reinforcing agent, a modified filler, titanium dioxide, a cross-linking agent and a polymerization inhibitor. The silica gel provided by the invention not only has better mechanical properties, but also has a small friction coefficient, when the silica gel is in contact with skin, the adhesion feeling is low, the smooth effect is good, and the smooth feeling and the skin-friendly property are improved. Moreover, two components, namely the first component and the second component, are arranged, the first component and the second component are stored separately, the material is easy to store and stable in performance, the service life of the product can be prolonged, in addition, the material preparation and forming process is simple, the vulcanization time is short, and the production efficiency is greatly improved.

The application discloses a preparation method of titanium white powder for chemical fibers, and comprises the following steps: S1, preparing a titanium dioxide base material slurry: taking titanium white base material, adding an organic dispersing agent, and preparing a titanium dioxide base material slurry; S2, coating: taking the titanium dioxide base material slurry, and sequentially performing zirconium silicate coating and trihydroxy aluminum stone coating; S3, steam powdering: taking the coated material, adding a titanate additive for steam powdering, and obtaining titanium white powder. The application improves the compatibility with spinning raw materials by using an organic dispersing agent in the coating and slurry preparation process, and then improves the weather resistance of the titanium white powder by zirconium silicate coating, and further improves the water dispersibility of the titanium white powder by the condensation of trihydroxy aluminum stone coating and the titanate additive, so that the extinction effect and weather resistance of the chemical fibers are improved.

The application relates to a Micro LED panel packaging structure and packaging glue, which comprises a light-emitting chip, a sapphire packaging layer and a glue layer, the sapphire packaging layer is coated on the light-emitting chip, the glue layer is coated on the sapphire packaging layer, diffusion powder is arranged at the contact surface of the glue layer and the sapphire packaging layer, the diffusion powder comprises milky white powder with a foggy surface and transparent powder with a smooth surface. The application uses compounded diffusion powder, which can comprehensively improve the brightness and light scattering effect. When light is emitted and meets the diffusion powder, reflection occurs, the light is scattered, the problem of inconsistent light caused by phase separation is improved, the refractive index of the diffusion powder is larger than that of the base glue, the diffusion powder is arranged at the contact surface of the glue layer and the sapphire packaging layer, part of the diffusion powder is in contact with the sapphire packaging layer, the total reflection angle of light at the contact surface of the diffusion powder and the sapphire packaging layer is larger than that at the contact surface of the base glue and the sapphire packaging layer, more light can be refracted and emitted, and the brightness is improved.

The invention relates to the technical field of coatings, and discloses a heat insulation coating for a heat exchanger and a preparation process thereof.The preparation process comprises the following steps that epoxy resin and modified cardanol are added into xylene, stirring is conducted for 10-15 min at the speed of 600-800 r / min, stirring is kept, a dispersing agent, a defoaming agent, modified graphene and titanium dioxide are sequentially added into the xylene, high-speed dispersion is conducted for 20-30 min, then the rotating speed is reduced to 300-500 r / min, stirring is conducted for 20-30 min, and the heat insulation coating for the heat exchanger is obtained. Adding hollow glass beads into the mixture, stirring at a low speed for 8-10 minutes, finally adding a curing agent, continuously stirring for 5-8 minutes, filtering, and standing to obtain the heat insulation coating for the heat exchanger. The prepared heat insulation coating for the heat exchanger has good heat insulation, water resistance and salt spray resistance.

The present application provides a low odor / low whitening structure instant adhesive and a preparation method thereof. The low odor / low whitening structure instant adhesive comprises 70-90 wt% of cyano acrylate, 3-20 wt% of acrylic acid copolymer, 1-13 wt% of fumed silica, 0.2-2 wt% of plasticizer, 0.1-1 wt% of carbon black and 0-0.05 wt% of additive in terms of mass fraction. The present application selects ultra-high purity monomers in the environment of low polymerization inhibitor, which can significantly shorten the polymerization induction period, so that the monomer can be instantaneously initiated and completely cured after contacting the surface of the substrate, thereby minimizing the release of volatile monomers into the environment, further reducing the gaseous monomer that causes respiratory tract / mucosa irritation from the source, and inhibiting the polymerization of volatile monomers in the air to form white powder.

The invention discloses a production method of a PA / PE high-barrier composite film bag. The composite film bag comprises an outer layer, a middle layer and an inner layer, the outer layer is prepared from PA6, glass fibers, maleic anhydride grafted polyethylene, an antioxidant, a slipping agent, an ultraviolet light absorber, titanium dioxide, nano silicon dioxide and polyimide; the middle layer is prepared from EVOH (Ethylene Vinyl Alcohol), polyamide-imide, nano montmorillonite, maleic anhydride grafted polypropylene, an antioxidant, a slipping agent, terpene resin, polyvinylidene chloride and polybutylene terephthalate; the inner layer is prepared from HDPE, LLDPE, mPE, an antistatic agent, silicon dioxide, dioctyl phthalate, an antibacterial agent and polylactic acid. The composite film bag prepared by the invention not only has high barrier property and good strength, but also has various functions.

The application provides a preparation method of a copper-clad plate, the copper-clad plate and an LED lamp plate. The preparation method of the copper-clad plate comprises the following steps: mixing epoxy resin and titanium white powder to obtain a mixed glue solution; immersing a glass fiber cloth in the mixed glue solution, and then heating to form a semi-cured film; and pressing a copper foil layer and the semi-cured film to form the copper-clad plate. Since the titanium white powder is added to the epoxy resin, the titanium white powder is uniformly mixed with the epoxy resin as an inorganic filler in the mixed glue solution obtained by mixing the epoxy resin and the titanium white powder. When the mixed glue solution is solidified, the titanium white powder can fill the pores of the epoxy resin, thereby improving the hardness and stability of the epoxy resin. Meanwhile, the titanium white powder can make the semi-cured film form a white base film. The white base film has high stability and has a strong reflection effect on light, thereby avoiding yellowing of the copper-clad plate in a high-temperature or light environment.

The invention discloses an efficient deionizing neutralizer for strongly acidic pickling wastewater and a preparation method of the efficient deionizing neutralizer, and belongs to the technical field of industrial wastewater treatment. The neutralizer is prepared by carrying out pure physical crushing, grinding, screening and compounding on magnesium silicate minerals, aluminum clay minerals and siliceous inert minerals, is white powder, has the density of 1.15-1.25 g / cm < 3 >, is not dissolved, not hydrolyzed and not reacted with water in pure water, is only subjected to directional proton consumption reaction with H under the strongly acidic condition with the pH value of 0-3, and can be used for preparing a high-purity high-purity high-purity magnesium oxide. After the pH value of the wastewater is rapidly increased to 4-5, the device is automatically stopped. The whole process of the preparation method is physical processing, high-temperature calcination is avoided, and chemical modification is avoided. The method provided by the invention solves the problems of scaling, large sludge amount and difficult pH control of the traditional neutralizer, has the advantages of greenness, environmental protection, safety, easy operation and low cost, and is suitable for strong acid pickling wastewater treatment in steel, electroplating and metal processing industries.

To provide a wireless tag with a temperature sensor function capable of suppressing a temperature rise of at least an inclusion part of a temperature sensor even when installed in a sunny place irradiated with sunlight.SOLUTION: A wireless tag 10 includes a semiconductor element 12 provided with a temperature sensor, an antenna 14 that receives a wireless instruction from a reader outside the wireless tag 10 or transmits a wireless signal to the reader, the semiconductor element 12 that wirelessly transmits temperature data measured by the temperature sensor from the antenna 14 to the reader according to the wireless instruction from the reader received by the antenna 14, and a conductive pattern 16 that electrically connects the semiconductor element 12 and the antenna 14. The outer peripheral surface of the inclusion part of the temperature sensors is covered with white resins containing white powder 24p so that the temperature rise of at least the inclusion part of the temperature sensors can be suppressed by reflecting sunlight when the wireless tag 10 is irradiated with the sunlight.SELECTED DRAWING: Figure 1

The application relates to an anti-aging high-whiteness BOPP matt white label film and a preparation method thereof, and belongs to the technical field of white label films. The anti-aging high-whiteness BOPP matt white label film comprises a matt layer, a core layer and a smooth layer arranged in sequence; the matt layer comprises random copolymerized polypropylene, 40-45 wt% high-density polyethylene, 2-4 wt% ethylene-2-allyl benzene methyl ether random copolymer and 0.1-0.5 wt% antioxidant; the core layer comprises homopolymerized polypropylene and 10-20 wt% white masterbatch, the white masterbatch comprises homopolymerized polypropylene, 5-10 wt% ultrahigh molecular weight polyethylene and 50-70 wt% surface-modified titanium white powder, and the organic coating agent used in the surface-modified titanium white powder is bis[(3-methyl dimethoxy silyl) propyl] polyoxypropylene. The label film has the advantages of anti-aging, high whiteness, good matt uniformity and good whiteness uniformity.

The application provides a method for removing 3-MCPD by using aminosilica adsorption. The method comprises the following steps: adsorbing a solution containing 3-MCPD by using aminosilica, mixing, adding a NaHCO3 solution to adjust the pH value to 7.0-9.0, reacting under the condition of 60-100 DEG C for 2-10 min, cooling to room temperature, mixing the mixed solution, and removing aminosilica particles by centrifugation. The aminosilica is an inorganic chemical material, which is an amorphous white powder, has the characteristics of non-toxicity, non-odor and non-pollution, is simple and easy to obtain, and has low cost. The aminosilica can be generated in batches, and has high adsorption efficiency for 3-MCPD and simple operation.

The application discloses a muffle furnace for preparing composite titanium white powder and relates to the technical field of muffle furnaces.The muffle furnace for preparing composite titanium white powder comprises a furnace body and a furnace cover, a furnace cavity is arranged in the furnace body, a placing table is arranged at the bottom of the furnace cavity, and an annular cover is connected to the furnace cavity through a lifting mechanism.The muffle furnace for preparing composite titanium white powder can lift the top of a crucible before heating and calcining, so that powder materials are prevented from escaping;the powder materials can be extruded and laid flat in an annular area between a hollow cover and the crucible, so that the powder materials are prevented from accumulating and the heating area is increased;when the powder materials are heated and calcined, the hot air in the furnace cavity can be circulated, and the powder materials between the hollow cover and the crucible can be reciprocally rolled and pressed, so that the powder materials are prevented from caking;after the powder materials are heated and calcined, the hot air in the furnace cavity can be circulated and heat-exchanged through a heat exchanger, the cooling effect is improved, waste heat is recycled, the muffle furnace is more energy-saving and environment-friendly, and the efficiency and effect of the preparation of the composite titanium white powder can be improved.

The invention discloses a method for preparing battery-grade ferrous sulfate from a titanium dioxide byproduct ferrous sulfate, which comprises the following steps: (1) heating and dissolving the titanium dioxide byproduct ferrous sulfate in a solvent to form a ferrous sulfate supersaturated solution; (2) sequentially adding iron powder and sulfuric acid into the ferrous sulfate supersaturated solution, and carrying out reduction reaction; (3) adding a chelating agent into the solution obtained in the step (2), mixing, filtering, cooling, and carrying out solid-liquid separation to obtain recrystallized ferrous sulfate crystals and recrystallized saturated mother liquor; and (4) heating and dissolving the recrystallized ferrous sulfate crystal into a supersaturated solution by using a solvent, cooling and crystallizing, and repeating the recrystallization step to obtain the battery-grade ferrous sulfate. According to the method, a chemical chelation method and a recrystallization method are combined, sodium lignin sulfonate is added into the mother liquor as a chelating agent before the first recrystallization, the sodium lignin sulfonate and metal impurity ions form a stable compound, meanwhile, enrichment of the impurity ions in the mother liquor circulation process is avoided, and the purity of ferrous sulfate crystals is improved.

The application provides a waterproof coating prepared from red mud and a preparation method thereof, wherein the waterproof coating includes, by mass fraction, 300-350 parts of pure propylene emulsion, 150-200 parts of butyronitrile latex, 40-60 parts of halloysite, 40-60 parts of titanium white powder, 100-150 parts of ground red mud, 100-150 parts of heavy calcium powder, 2-3 parts of cellulose ether, 4-6 parts of dispersing agent, 1-3 parts of wetting agent, 3-5 parts of defoaming agent, 2-4 parts of preservative, 6-8 parts of iron red powder, 0.5-1.5 parts of organic color paste and the rest water; the waterproof coating can be prepared from the waste red mud, is more environmentally friendly, has low production cost, and has good waterproofness, strength, adhesion, crack resistance and weather resistance.

The utility model relates to the technical field of water and soil conservation devices, and discloses a positioning marking device for mine remediation, which comprises two sleeves. According to the positioning marking device for mine repair, through the action among a powder barrel, a connecting rod, an annular stop block, a first fixing plate, a filter screen and a marking conical column, when a sleeve is pressed downwards to drive the marking conical column to pierce into the ground, the whole powder barrel is close to the ground, and when the sleeve continues to drive the marking conical column to pierce into the ground, the whole powder barrel moves downwards; the first fixing plate is in contact with the ground relative to the lower first fixing plate and pushes the connecting rod, the annular stop block moves upwards, and at the moment, white powder in the powder barrel can be moved to the space in the middle of the powder barrel under the action of gravity and guidance of the annular stop block, so that the powder stably flows to the position above the filter screen; and then the white powder is uniformly scattered on the edge of the marking conical column from the filter screen in a circular ring shape, so that the position of the measurement fixed point is accurately marked, and the accuracy and effect of subsequent planting are improved.

This invention belongs to the field of biological sample contaminant screening, specifically involving a pretreatment method for liquid chromatography-tandem mass spectrometry analysis of chemical contaminants in serum. The pretreatment method includes the following steps: (1) Preparation of Ti / Zr MOF: Zirconium source, 1,3,5-tris(4-carboxyphenyl)benzene, titanium source, and organic acid are placed in a container, dissolved in an aprotic polar solvent, heated to react, cooled, and the white powder product is collected by centrifugation and washing, which is Ti / Zr MOF, and dried for later use; (2) Extraction: The serum sample is mixed with acetonitrile, ultrasonically vortexed, centrifuged, and a portion of the supernatant is taken as the purification solution; (3) Purification: The purification solution in step (2) is mixed with the Ti / Zr MOF in step (1), ultrasonically vortexed, centrifuged, and the supernatant is taken to obtain the purified sample.

The application discloses a steel plate enamel high-temperature acid-resistant ground enamel free of fluorinated salt and nitrate, a preparation method and application thereof, and belongs to the technical field of enamel. The ground enamel is composed of quartz, titanium white powder, zero-water borax, soda ash, potassium carbonate, calcium carbonate, potassium feldspar, lithium carbonate, copper oxide, iron oxide and recycled ternary battery positive material according to specific mass proportions. The preparation comprises the steps of raw material mixing, high-temperature smelting under pure oxygen condition, wire drawing detection and rapid cooling. The ground enamel is completely free of fluorinated salt and nitrate, avoids fluorine emission and environmental protection equipment blockage problems from the source, the fluorine content of the product is not detected through detection, and the product meets the requirements of the EU REACH regulation. Meanwhile, by introducing the recycled ternary battery material, the adhesion of the ground enamel is obviously enhanced, the synergistic effect between components is strengthened, other performances are promoted, and resource recycling and cost reduction are realized.

The application belongs to the technical field of photocatalytic nanomaterials, and relates to a preparation method of Nb2O5@Ag3PO4 composite material, which comprises the following steps: a. dissolving niobium oxalate in a mixed solution of deionized water and hydrogen peroxide, and magnetically stirring to obtain solution A; b. adding ammonia water into solution A, magnetically stirring, and hydrothermally reacting, and then treating the product after the reaction to obtain white powder B; c. dissolving powder B in anhydrous ethanol, and ultrasonically and stirring to mix to form a uniform mixed solution C; d. respectively dissolving silver nitrate and sodium phosphate in deionized water to form solutions D and E for standby; e. dropping solution D into solution C at a certain rate to obtain solution F; f. dropping solution E into solution F at a certain rate, and then centrifuging, cleaning and drying at a constant temperature for a certain time to obtain the Nb2O5@Ag3PO4 composite material. The application has the advantages of simple process, low cost, short reaction period, no pollution to the environment, and visible light photocatalytic performance.

The invention provides a coating method of high-silicon-content compact silicon-aluminum coated titanium dioxide, which comprises the following steps: S1) mixing titanium dioxide chloride, deionized water, a pH regulator and a dispersing agent to obtain oxidized slurry; the oxidized slurry is diluted and then heated, and then the pH of the slurry is adjusted; s2) adding sodium silicate and acid liquor into the slurry obtained in the step S1), and curing; s3) adding sodium silicate and acid liquor into the slurry obtained in the step S2), and curing; s4) adding sodium silicate and acid liquor into the slurry obtained in the step S3), and curing; s5) adding sodium silicate and acid liquor into the slurry obtained in the step S4) for curing; and S6) adding an aluminum source and an acid solution into the slurry obtained in the step S5), and curing to obtain the silicon-aluminum coated titanium dioxide. According to the coating method provided by the invention, by adopting a strategy of in-situ generation of nano seeds and layer-by-layer assembly, the bottleneck of coating densification of a titanium dioxide film layer with high silicon content is broken through, so that the silicon-aluminum coated titanium dioxide with low porosity and ultrahigh weather resistance is prepared.

Provided is a wireless tag with a temperature sensor function capable of suppressing temperature rise of at least a part including the temperature sensor even when the tag is installed in a sunny place irradiated with sunlight. A wireless tag 10 comprising a semiconductor element 12 equipped with a temperature sensor includes: an antenna 14 that receives a wireless instruction from an external reader of the wireless tag 10 or transmits wireless signals to the reader; the semiconductor element 12 that wirelessly transmits temperature data measured by the temperature sensor from the antenna 14 to the reader in response to the wireless instruction from the reader received by the antenna 14; and a conductive pattern 16 that electrically connects the semiconductor element 12 and the antenna 14. The wireless tag is characterized in that the outer peripheral surface of a part including the temperature sensor is covered with a white resin containing white powder 24p so that when the wireless tag 10 is irradiated with sunlight, the sunlight is reflected and the temperature rise of at least the part including the temperature sensor can be suppressed.