51 results about "ALUMINUM PHOSPHATE" patented technology

This application provides a wide-temperature-range modified phosphate-based self-lubricating coating, its preparation method, and its application. The method includes: adding CrO3 solution to polyphosphoric acid at 90°C under stirring, adding Al(OH)3 in batches, continuing stirring for 2-3 hours, and cooling to room temperature to obtain a chromium-aluminum phosphate adhesive; heating the chromium-aluminum phosphate adhesive to 110-120°C, adding fumed silica, stirring, and then adding B2O3 in batches to obtain a modified chromium-aluminum phosphate adhesive; preparing the wide-temperature-range modified phosphate-based self-lubricating coating: mixing the modified chromium-aluminum phosphate adhesive with silica sol, mixing evenly, and then adding deionized water and filler to obtain a wide-temperature-range modified phosphate-based self-lubricating coating; spraying the wide-temperature-range modified phosphate-based self-lubricating coating onto the substrate surface and sintering to form a wide-temperature-range modified phosphate-based self-lubricating coating. The self-lubricating coating provided by this application can be applied to the field of wide-temperature-range self-lubrication and corrosion protection from room temperature to 800°C.

This invention discloses a heavy metal-free water-based anti-rust primer, its preparation method, and its application, relating to the field of water-based metal anti-corrosion coatings. The primer comprises a modified acrylic copolymer emulsion, a modified zinc phosphate-aluminum tripolyphosphate composite pigment, a diatomaceous earth composite filler, and a lignin sulfonate-grafted polycarboxylic acid dispersant. The modified acrylic copolymer emulsion is prepared by copolymerizing four monomers and then modifying them with epoxy silane and amino silane. The modified zinc phosphate-aluminum tripolyphosphate composite pigment is prepared by rare earth lanthanum ion loading and synergistic modification with a dual coupling agent. The diatomaceous earth composite filler is prepared by high-temperature activation, composite with nano-silica, and silane modification. Through the synergistic effect of its components, this invention significantly improves the primer's adhesion, resistance to damp heat, high temperature, kitchen fumes, weak acid resistance in food, and resistance to alkaline media in the kitchen, making it suitable for corrosion protection of various metal components in kitchens and commercial kitchens.

The application discloses a kind of water-based printing ink and its preparation method and application, belong to high polymer material technical field.The water-based printing ink provided by the application includes the following mass fraction of preparation raw materials: 5~20 parts of ethanol, 10~35 parts of water, 50~70 parts of water-based polyurethane emulsion, 0.2~0.5 parts of dispersing agent, 0.1~0.5 parts of defoaming agent, 1~5 parts of aluminum tripolyphosphate, 7~15 parts of pigment, 0.5~2 parts of ultraviolet absorber, 0.5~5 parts of antioxidant.The water-based polyurethane emulsion is used as main body resin in the application, and is matched with aluminum tripolyphosphate, ultraviolet absorber and antioxidant, and the water-based printing ink obtained has good weather resistance and adhesion, and the printed sample does not discolor for a long time, and has good durability.The water-based printing ink provided by the application has wide application in the field of gravure printing or flexographic printing.

The application discloses an anti-thermal shock alumina fiber reinforced phosphate high-temperature-resistant composite material and a preparation method thereof, and belongs to the technical field of ceramic matrix composites. The material is composed of gradient modified alumina fiber reinforcement, composite phosphate matrix and multi-scale composite filler. The fiber surface is provided with a nano yttrium oxide-yttrium phosphate gradient interface layer, and the matrix is an aluminum phosphate-zirconium phosphate-yttrium oxide composite system. The preparation method comprises fiber degumming, gradient interface modification, slurry preparation, impregnation and curing and microwave sintering. Through gradient interface regulation and composite matrix design, the application solves the problems of poor thermal shock resistance and insufficient high-temperature stability of the existing materials. Tests show that the material has no macroscopic cracking after 10 times of water cooling at 1300 DEG C, the strength retention rate is greater than or equal to 88%, the room temperature bending strength is greater than or equal to 280 MPa, and the material has excellent high-temperature mechanical properties and thermal shock stability, and is suitable for aerospace thermal protection and high-temperature structural parts.

This application discloses a solid electrolyte and its preparation method, wherein the solid electrolyte is Li. 1+x‑2y Al x Ti 2‑x‑y M y (PO 4‑ z F 2z )3, where 0.3≤x≤0.5, 0.004<y<0.02, 0<z≤0.01; where M is a metallic element with a valence greater than +4. The solid electrolyte Li provided in this application... 1+x‑2y Al x Ti 2‑x‑y M y (PO 4‑ z F 2z )3. By doping lithium titanium aluminum phosphate with a high-valence metal element M, the ionic conductivity of the solid electrolyte was improved, while the water content of the solid electrolyte was reduced.

The application discloses a PBI crosslinking modified PET composite film and a preparation method and application thereof, and relates to the technical field of battery separators. Through the benzimidazole repeating units in the PBI molecular main chain, physical entanglement and chemical crosslinking between PBI molecular chains and PET molecular chains occur in a melt blending process, a three-dimensional network structure is formed, the penetration of corrosive substances in electrolyte into the interior of PET material is effectively prevented, and the corrosion resistance of the PET material is improved; the modified PET material still has good melt flowability and processing performance, is suitable for existing PET processing equipment, and does not use toxic and harmful substances in the modification process, and meets the environmental protection requirements; the application further improves the electrolyte corrosion resistance, mechanical strength and thermal stability of the PET film by adding nano-aluminum phosphate and graphene in the PET master batch.

The application provides a kind of hollow SAPO-34 molecular sieve prepared by using aluminum phosphate with kanemite structure and its preparation method and application, characterized by using aluminum phosphate with kanemite structure as aluminum source and phosphorus source, and grinding and mixing with silicon source, template agent and a small amount of water, then adding into hydrothermal kettle to synthesize SAPO-34 molecular sieve with hollow structure. The synthesis method of the hollow SAPO-34 molecular sieve of the application can form hollow structure without acid-base post-treatment process or adding mesoporous template agent, the process is simple, which is beneficial to industrial scale production; and the formation of hollow structure is beneficial to diffusion mass transfer and heat conduction in methanol to olefin reaction. The SAPO-34 molecular sieve prepared by the method has a selectivity of ethylene and propylene as high as 85% in methanol to olefin reaction, and the service life reaches more than 400 minutes, which is beneficial to industrial application.

This invention discloses a micro / nano anti-corrosion coating and its preparation method, belonging to the field of marine engineering anti-corrosion technology. It includes component A and component B. Component A comprises bisphenol F type epoxy resin, cashew phenol glycidyl ether, KH560 modified zinc phosphate, aminated nano-silica, aluminum tripolyphosphate, wetting and dispersing agent, anti-settling agent, composite UV stabilizer, and composite solvent. Component B comprises 100 parts of cashew phenol modified amine curing agent. This invention, using the aforementioned micro / nano anti-corrosion coating and its preparation method, achieves ultra-long salt spray resistance in marine atmospheric, splash, and full immersion conditions; significant self-inhibition ability of corrosion propagation after scratches; ultra-high interfacial bonding strength with metal substrates; and UV yellowing resistance that overcomes the weather resistance bottleneck of the cashew phenol system. It also possesses excellent industrial practicality and economic efficiency.

This application relates to the field of new materials technology, specifically to a composite material of bismuth oxychloride and neodymium-doped aluminum phosphate, its preparation method, and its application. The composite material is composed of bismuth oxychloride and neodymium-doped aluminum phosphate. The bismuth oxychloride and neodymium-doped aluminum phosphate composite material of this invention possesses both photocatalytic and radiative cooling functions, exhibiting a significant synergistic effect.

This invention provides a phosphate-based adhesive and its preparation method, belonging to the field of inorganic adhesives. The invention involves mixing a phosphoric acid solution with an aluminum source for an acid-base neutralization reaction to obtain a neutralized product; mixing the neutralized product with a trivalent metal halide for a metathesis reaction to obtain the phosphate-based adhesive; and providing a curing agent to obtain the phosphate-based adhesive. This invention incorporates heteroions into the aluminum phosphate adhesive system in the form of trivalent metal halides, eliminating the need for a reduction reaction and allowing direct use of the trivalent metal. The preparation method is simple, efficient, and easily scalable for industrial production. Furthermore, this invention limits the trivalent metal halide to one or more of chromium halides, iron halides, scandium halides, iridium halides, lanthanum halides, ruthenium halides, osmium halides, gallium halides, and molybdenum halides, expanding the range of heteroions and eliminating the need for highly toxic chromium trioxide, thus improving the safety of the preparation method.

This invention provides a positive electrode active material and its preparation method, a positive electrode sheet, and a battery. The positive electrode active material includes a core material and a shell material disposed on at least a portion of the surface of the core material. The shell material includes lithium aluminum titanium phosphate, and the core material includes M-doped lithium nickel manganese oxide active material, wherein M includes titanium, phosphorus, and yttrium. The positive electrode active material of this invention, based on a dual strategy of titanium, phosphorus, and yttrium co-doping and lithium aluminum titanium phosphate coating, solves the problems of poor structural stability and severe interfacial side reactions of lithium nickel manganese oxide at high temperatures, while also effectively ensuring its normal specific capacity.

The application provides a C5 type chromium-free environment-friendly coating for non-oriented silicon steel and a preparation method thereof, and the components of the application include acrylic resin, phosphoric acid, octyl phosphonic acid, glycerol, polyether modified silicone oil, water and modified functional filler, wherein the modified functional filler is a blend of aluminum hydroxide and modified nano silicon dioxide; the modified nano silicon dioxide is obtained by grafting reaction of polyacrylic acid, citric acid and hydroxylated nano silicon dioxide, and can inhibit nano silicon dioxide agglomeration and improve coating dispersibility and leveling property; after drying and curing of the coating of the application, the phosphoric acid, octyl phosphonic acid and aluminum hydroxide form an inorganic aluminum phosphate / organic aluminum phosphonate composite three-dimensional network matrix, the nano silicon dioxide is uniformly distributed and fills the pores, realizing micro densification and inorganic reinforcement of the coating, and the obtained organic / inorganic composite coating structure is uniform and dense, has high hardness, good insulation, strong adhesion, and good heat resistance and chemical stability; and the application is chromium-free and has environmental protection and practicality.

The present application relates to waste resource utilization technical field, specifically to a method for preparing aluminum dihydrogen phosphate from municipal sludge gasification slag, wherein the gasification slag is first crushed and then subjected to acid leaching treatment, so that the phosphorus and aluminum in the gasification slag are partially in the form of ions into the solution, the obtained acid leaching solution is removed from Fe 3+ and other impurity ions through an activated carbon adsorption column, then the aluminum and phosphorus in the solution are precipitated and separated in the form of aluminum phosphate by adjusting the pH value, and finally the obtained aluminum phosphate precipitate is mixed with phosphoric acid at a certain ratio to synthesize aluminum dihydrogen phosphate under heating conditions. The method has simple process and mild conditions, effectively solves the disposal problem of municipal sludge gasification slag, realizes the high-value recovery of phosphorus and aluminum resources, and the prepared aluminum dihydrogen phosphate product has high purity, which has significant environmental and economic benefits.

The application belongs to the technical field of sludge gasification residue recycling, and particularly relates to a process for recycling aluminum phosphate from sludge gasification residue, aiming to solve the problem of difficult efficient and clean recycling of phosphorus and aluminum resources in sludge gasification residue. The process comprises: mechanically crushing the sludge gasification residue to increase the specific surface area; using waste acid for wet acid leaching to dissolve phosphorus, aluminum and iron elements; after solid-liquid separation and dilution to adjust pH, using strong acid cation exchange resin to remove heavy metal ions, realizing efficient separation of phosphorus and impurities; taking the phosphorus concentration in the purified acid leaching solution as the benchmark, under the conditions of accurate control of pH, temperature and aluminum-phosphorus molar ratio, reaction to generate aluminum phosphate precipitate; and then through aging, solid-liquid separation, washing, drying and crushing, high-purity aluminum phosphate product is obtained. The application avoids phosphorus loss through waste acid cooperation with acid leaching and resin deep impurity removal, significantly improves the phosphorus leaching rate and product purity, the process flow is compact and can be continuously operated, and has economic and environmental benefits.

The application relates to the technical field of cable materials, and discloses a high-strength oil-resistant cable material and a preparation method thereof; the preparation method comprises the following operation steps: mixing polyether polyurethane resin and butyronitrile rubber at 70-90 DEG C for 3-6 minutes, adding modified microcapsules, an antioxidant, an ultraviolet absorber and a lubricant to continue mixing, and extruding and granulating at 120-160 DEG C to obtain the high-strength oil-resistant cable material. In the scheme, in order to solve the problem that the oil resistance of the cable material is affected by the poor compatibility of the polyphosphate flame retardant with the polyurethane resin due to the strong hydrophilicity of the polyphosphate flame retardant, the polyphosphate flame retardant is made into hydrophobic coated aluminum polyphosphate, and the microcapsules are prepared by taking the hydrophobic coated aluminum polyphosphate as a core material, so that the network compactness of the microcapsules is improved, and the oil resistance and the strength of the cable material are improved.

This invention relates to the field of surface spraying technology, and discloses a thermally sprayed wear-resistant and corrosion-resistant composite coating for metal substrates and its preparation method. The method includes: degreasing, sandblasting, purging, and preheating the surface of the metal substrate; dispersing, drying, and pre-curing Cr3C2 particles in a coating slurry containing flake Cr2O3 particles, borosilicate glass particles, aluminum phosphate particles, and silica sol to obtain barrier-coated hard reinforcing particles; spraying NiCrBSi alloy powder, barrier-coated hard reinforcing particles, and Al2O3 particles into granules, followed by thermal spraying, and then impregnating and sealing under negative pressure and curing to obtain the composite coating. This invention distributes the barrier phase at the particle interface around the Cr3C2 hard phase, limiting the spread of corrosive media along the particle interface and wear grooves after wear, thereby improving the service stability of the coating under wear-corrosion coupled conditions.

This invention relates to the field of hydroxyapatite technology and discloses aluminum phosphate-modified hydroxyapatite material and its preparation method, comprising the following materials: 1.32g diammonium hydrogen phosphate, 1.33g aluminum chloride, simulated weathering sample, and 200ml deionized water. The modified hydroxyapatite prepared by this invention, by adding an aluminum source during the original protection process, effectively improves the porosity, ultrasonic velocity, and strength of the weathered sample while ensuring aesthetic compatibility. Furthermore, its acid resistance is also improved, effectively enhancing the acid rain resistance of outdoor carbonate rock artifacts.

The application provides a preparation method of aluminum-doped indium phosphide core-shell quantum dots with adjustable emission spectrum, wherein, in the same reaction container, indium phosphide cores are prepared first, and then a zinc sulfide shell layer is coated; during the coating of the zinc sulfide shell layer, a certain proportion of aluminum isopropoxide is added, so that aluminum is doped in the zinc sulfide shell layer in the form of aluminum phosphate, the formation of indium phosphide surface oxidation defects is greatly inhibited, the degree of mismatch of the core-shell interface charge is relieved, and the quantum dots with improved luminous efficiency and narrowed emission half-width are obtained. The application can also realize the tuning of the quantum dot emission wavelength in the range of 480-630 nm by changing the type of indium precursor and halide ions in the zinc halide, the temperature and time of nucleation reaction. The aluminum-doped indium phosphide core-shell quantum dots prepared by the application are obtained by a simple one-pot method, and have the advantages of excellent optical performance, wide adjustable emission spectrum range, environmental friendliness, easy scale production and the like, and have a wide popularization and application prospect.

This invention discloses a method for preparing a low-temperature resistant aluminum alloy for use in base stations, comprising the following steps: (1) dissolving aluminum nitrate and ammonium dihydrogen phosphate to form a solution, adjusting the pH to make the solution a slurry; separating the slurry into solid and liquid phases to obtain a filter cake; drying the filter cake to obtain amorphous aluminum phosphate hydrate loose powder; calcining the powder at high temperature to obtain scaly quartz-type aluminum phosphate; crushing the scaly quartz-type aluminum phosphate into aluminum phosphate micro powder; (2) mixing and ball milling the aluminum phosphate micro powder and zinc stearate powder to obtain modified powder; (3) activating the surface of a 3003-O aluminum alloy substrate; (4) adding a dispersion medium to the modified powder and then redispersing it to form a microcrystalline slurry; spraying the microcrystalline slurry onto the surface of the substrate and hot rolling the substrate; step five: stress-relief annealing. This invention provides a method for preparing a low-temperature resistant aluminum alloy for use in base stations, which improves the various properties of 3003-O aluminum alloy at low temperatures.

This invention provides a ceramic precursor composite magnesia-carbon refractory brick and its preparation method, belonging to the field of refractory materials technology. The raw materials for the refractory brick include magnesia aggregate, double-modified flake graphite, a medium-temperature ceramic precursor, modified phenolic resin, and SiO2-B4C-La2O3 composite powder. The double-modified flake graphite is prepared by using flake graphite as a matrix, activating it with hydrochloric acid, coating it with aluminum sol, and then sintering it to form an Al2O3@graphite core-shell structure. It is then precipitated with triisopropyl borate and aluminum isopropoxide under alkaline conditions and sintered. The medium-temperature ceramic precursor is prepared by using boric acid and basic magnesium carbonate as raw materials, crosslinking them with aluminum phosphate aqueous solution to form a sol, drying, and sintering. The modified phenolic resin is prepared by using a methyl phenolic resin as the main chain, synergistically modified with 1,6-hexanediol and polyglycerol-10 isostearate, and then hydrolyzing and condensing it with tetrabutyl titanate and γ-aminopropyltriethoxysilane.

The application relates to the technical field of batteries, in particular to a positive plate and a battery comprising the same. The positive plate comprises a first active layer, a second active layer and a third coating layer; the first active layer comprises first lithium iron phosphate particles, the second active layer comprises second lithium iron phosphate particles, and the third coating layer comprises a first lithium titanium aluminum phosphate material; the weight percentage of element Al in the third coating layer is greater than that in the first coating layer, and the weight percentage of element Al in the first coating layer is greater than that in the second coating layer; the weight percentage of element Ti in the third coating layer is greater than that in the first coating layer, and the weight percentage of element Ti in the first coating layer is greater than that in the second coating layer. The positive plate of the application can improve the high-temperature storage performance, the charge-discharge performance and the cycle performance of the battery while ensuring a high energy density of the battery.

A modified ternary cathode material, its preparation method, and a secondary battery are disclosed. The preparation method of the modified ternary cathode material includes: mixing the ternary cathode material and coating additives through sand milling to obtain a slurry; drying the slurry by spray drying; the coating additives include one or more of aluminum hydroxide, alumina, aluminum phosphate, titanium oxide, cobalt hydroxyl oxide, cobalt nitrate, and strontium carbonate to obtain a mixture; and sintering the mixture to obtain the modified ternary cathode material. This preparation method reduces the residual alkali content of the obtained modified ternary cathode material by improving the mixing process. The process is relatively simple, reduces the need for water washing, and helps save process costs. The modified ternary cathode material obtained by the above preparation method has a low residual alkali content and good cycle performance. When used in processing, such as manufacturing secondary batteries, the modified ternary cathode material can maintain good uniformity during the homogenization and coating processes, providing good electrochemical performance for the secondary battery.

This invention provides a rust-preventive coating composition capable of forming a rust-preventive coating film with good salt spray resistance, high weldability, and low nozzle erosion even with a small film thickness. The rust-preventive coating composition comprises: an alkyl silicate condensate (A), zinc powder (B), an aluminum phosphate-based rust-preventive pigment (C), and an extender pigment (D); the extender pigment (D) is at least one selected from the following extender pigments (D1) to (D3), wherein extender pigment (D1) is at least one selected from kaolin and gypsum; extender pigment (D2) is at least one selected from mica, flaky talc, and glass flakes; and extender pigment (D3) is barium sulfate; the mass ratio of zinc powder (B) to aluminum phosphate-based rust-preventive pigment (C) ((B) / (C)) is in the range of 7.5 to 20.0.

This invention provides a method and mixing and grinding equipment for recovering lithium from lithium precipitate mother liquor, relating to the field of battery material preparation. The method for recovering lithium from lithium precipitate mother liquor includes the following steps: S1, mixing the lithium precipitate mother liquor with an acid solution, adjusting the pH to 6-7 to obtain a decarbonized solution; after evaporation, concentration, cooling, and crystallization, the decarbonized solution undergoes solid-liquid separation to obtain crude sodium sulfate and a lithium-containing filtrate; S2, adding sodium phosphate precipitant to the lithium-containing filtrate, and after the reaction is complete, solid-liquid separation yields crude lithium phosphate and a precipitate mother liquor. The method for recovering lithium from lithium precipitate mother liquor provided by this invention achieves full resource utilization of lithium, sodium, aluminum, and phosphorus and internal recycling of reagents through a coupled process of stepwise crystallization separation of sodium sulfate, lithium phosphate precipitation, sulfate roasting conversion, lithium carbonate preparation, aluminum phosphate alkali dissolution conversion, carbonation precipitation, and aluminum hydroxide sulfuric acid conversion. It also achieves the conversion and utilization of wastewater.

The application relates to the technical field of lithium ion battery materials, and specifically discloses a modified lithium titanium aluminum phosphate material, a preparation method and application thereof. The material comprises a lithium titanium aluminum phosphate material with a chemical formula of Li 1+X Al X Ti 2‑X (PO4)3, wherein the x satisfies 0.3 <= x <= 0.5, the modified lithium titanium aluminum phosphate material is prepared by preparing a lithium titanium aluminum phosphate matrix from a mixture containing a lithium source, an aluminum source, a titanium source, a phosphorus source and an organic reaction medium, and then treating the lithium titanium aluminum phosphate matrix in a sulfur dioxide-containing atmosphere; and the organic reaction medium contains a salicylic acid derivative and a nitrogen-containing compound. The method combines the process of organic reaction medium-assisted gas phase transmission and controllable sintering in a sulfur dioxide atmosphere, effectively solves the problems of uneven element distribution and large grain boundary resistance, and the modified lithium titanium aluminum phosphate material can be used in lithium ion batteries to significantly improve the rate performance and cycle stability of the batteries.

The present disclosure relates to a battery cell for a vehicle, a battery for a vehicle, and a method for forming a battery cell. The battery cell comprises a cathode comprising lithium iron phosphate and lithium aluminum titanium phosphate, an anode comprising a silicon film, and a separator positioned between the cathode and the anode. The battery cell also comprises a first solid electrolyte layer arranged on the separator and a liquid electrolyte in contact with the cathode, the anode, the first solid electrolyte layer, and the separator. The separator comprises a cathode side facing the cathode and an anode side facing the anode. The first solid electrolyte layer comprises a layer of lithium aluminum titanium phosphate, and the liquid electrolyte comprises a primary lithium ion salt, a solvent, and a diluent.

The application belongs to the technical field of cables, and particularly relates to a high-torsion-resistance and low-smoke PVC / TPU composite cable material and a preparation method thereof. The PVC and polyether TPU are used as main components of the cable material, the compatibility of the PVC and the polyether TPU is improved by adding a compatibilization aid, the mechanical strength of the cable material caused by phase separation is inhibited, the aluminum phosphate is uniformly loaded on the surface of nano silicon dioxide, the flame-retardant and smoke-suppressing agent is formed by polymerization of hexachlorocyclotriphosphazene and cyanuric acid to improve the flame-retardant performance of the cable material, the toughening filler is prepared by mixing fumed silica, cerium oxide and modified montmorillonite, the nano sheet structure can effectively block the penetration of water molecules to improve the water resistance of the cable material, and when the cable material is subjected to torsion deformation to generate microcracks, the toughening filler can prevent the rapid expansion of the cracks to improve the torsion resistance of the cable material. The composite cable material prepared by the application has excellent low-temperature resistance and water resistance, and can realize low-temperature torsion without damage.

The application discloses a nano BUCT-10 molecular sieve, a synthesis method thereof and application of the molecular sieve in catalyzing linear olefin skeletal isomerization. The molecular sieve has a magnesium aluminum phosphate framework composition, which can be expressed as Mg x Al y PO4, wherein 0

A catalyst for preparing vinyl acetate, and a preparation method and application thereof, belong to the field of chemical industry, and comprise: a catalyst composition satisfying the expression: Zn α Bi β Si γ B λ Al μ P η O χ / C 100 , wherein atomic ratios α=1.4-3.8, β=0.001-0.002, γ=1.8-3.8, λ=0.01-0.02, μ=0.9-1.8, and η=0.9-1.8, and χ is the required total number of oxygen atoms; superfine carbon powder, silicon carbide powder and basic zinc carbonate (contributing 10%-40% of the total zinc amount) are uniformly mixed, and then impregnated with an equal volume of a mixed solution of bismuth nitrate and boric acid; aluminum phosphate sol is added, and then kneaded and shaped; after drying, the catalyst is activated at 300-700 DEG C with hydrogen peroxide-containing water vapor; and saturated impregnation with a zinc acetate solution and drying are performed. The catalyst has low manufacturing cost and harshness, a simplified process, good strength, diffusion and heat conduction performance, and good activity and stability.

The application relates to the technical field of cable recycling, and discloses a flame-retardant cable material based on recycled PET modification and a preparation method thereof. The method comprises the following steps: sequentially performing hydraulic cleaning, eddy current sorting and hot air drying on recycled polyethylene terephthalate (PET) material, and controlling the water content of the material to be lower than 0.02%; under the protection of inert gas, performing solid-state pre-reaction on the dried PET, a styrene-acrylonitrile-glycidyl methacrylate copolymer containing an epoxy functional group, microencapsulated red phosphorus and a silane coupling agent in a high-speed stirred tank at 180-190 DEG C to form a pretreated composite; and feeding the pretreated composite, ethylene-vinyl acetate copolymer, an aluminum hypophosphite salt and an anti-dripping agent into a co-rotating parallel twin-screw extruder to realize dynamic crosslinking under the action of a reasonable temperature gradient and high shear, and obtaining modified regenerated particles with a diameter of 2-3 mm through water ring pelletization. The method realizes high-value regeneration of recycled PET, is environmentally friendly and can be produced on a large scale.