244 results about "Antimony trioxide" patented technology

The invention relates to the technical field of high polymer materials, in particular to a light-aging-resistant flame-retardant ABS material for an electric fitting box and a preparation method of the light-aging-resistant flame-retardant ABS material. Comprising the following raw materials: ABS resin, AS resin, ABS high rubber powder, CPE, bromotriazine, carrier-free antimony trioxide master batch, a flame retardant synergist, precipitated barium sulphate, titanium dioxide, a main antioxidant, an auxiliary antioxidant, a lubricant, an anti-dripping agent, a dispersing agent and an ultraviolet absorbent. The material has excellent flame retardant property, and the synergistic effect of the flame retardant components such as the bromotriazine and the like reaches a high flame retardant grade; the ultraviolet absorbent and the titanium dioxide can delay aging and stabilize the color; the melt flow rate is high, and the fluidity is improved through cooperation of high-melt-index ABS and low-molecular-weight AS resin; the mechanical property is good, and the raw materials cooperate to guarantee strength and toughness; the appearance quality is good, pocking marks are avoided, and the glossiness is good. The preparation process is simple, and conventional equipment and reasonable parameters ensure stability and operability.

The invention discloses a flame-retardant flat flexible high-current cable and a preparation method thereof, and relates to the technical field of cables. The cable comprises a flat conductor, an insulating layer, a shielding layer, a reinforcing layer and a sheath layer, the insulating layer contains 85-90 parts of low-density polyethylene, 1.2-1.5 parts of dicumyl peroxide, 12-15 parts of modified aluminum hydroxide and the like; and the sheath layer contains 42-50 parts of modified chlorinated polyethylene, 28-34 parts of modified aluminum hydroxide and the like. The modified chlorinated polyethylene is prepared through a three-step extrusion reaction, and the modified aluminum hydroxide is subjected to coupling agent treatment, coating modification and carbon nanotube composite modification. The flame-retardant flat flexible large-current cable has prominent advantages, an efficient flame-retardant system is constructed by modified aluminum hydroxide and antimony trioxide, and the V-0 level requirement of UL94 can be met; the flat structure is combined with the modified chlorinated polyethylene, so that the flexibility is excellent and the temperature-resistant range is wide. The design of the insulating layer and the shielding layer ensures excellent electrical performance, segmented temperature control and accurate parameter regulation and control are performed in preparation, stable product quality is ensured, and the device can adapt to a large-current application scene.

This application relates to the field of metal surface treatment materials, specifically disclosing a silicon-integrated inorganic supercrystalline thermal energy powder and its preparation and application methods. The silicon-integrated inorganic supercrystalline thermal energy powder comprises raw material A and raw material B. Raw material A includes the following: magnesium oxide, sodium fluoroaluminate, sodium polyphosphate, zinc oxide, crystalline tin tetrachloride, silicon dioxide, and boric acid. Raw material B includes the following raw materials in parts by weight: spodumene, lithium carbonate, titanium dioxide, zinc silicate, sodium carbonate, antimony trioxide, albite, fluorite, boric acid, sodium hydroxide, and yttrium oxide. The inorganic supercrystalline thermal energy powder of this application has advantages such as corrosion resistance and oxidation resistance, good thermal stability, no damage from thermal cycling, high hardness, wear resistance and high temperature resistance, energy saving, water scale reduction, and the ability to replace organosilicon high-temperature resistant special coatings, baking paints, enamel paints, and ceramic floor glazes.

The invention belongs to the technical field of PVC coated cloth, and particularly relates to environment-friendly welding-resistant low-cost coated cloth meeting the BS7837 standard. The coated fabric is a PVC coated fabric, and a PVC coated fabric coating taking WSFR-9702, antimony trioxide and decabromodiphenyl ethane as flame retardants is obtained through a large number of screening, so that the coated fabric simultaneously meets the comprehensive performance requirements of meeting the high flame retardance requirement of the BS7837 standard, meeting the high environmental protection requirement of the REACH regulation, being resistant to welding, low in cost, free of precipitation, folding white and the like; therefore, the method has the advantages of environmental protection, cost reduction and quality improvement, the comprehensive competitive advantage of the product is improved, and the method has great industrial application value.

A positive electrode lead paste for a high-capacity and long-service-life storage battery and a preparation method therefor. The formula of the positive electrode lead paste comprises lead powder, dilute sulfuric acid, water and additives. In parts by mass, the additives added to every 1000 parts of the lead powder comprise: 1-3 parts of sodium perborate; 0.5-2 parts of 4BS; 1-3 parts of antimony trioxide; 1-3 parts of tin pyrophosphate; 2-4 parts of a polyolefin; 2-4 parts of a conductive carbon material; and 1-1.5 parts of a polyester staple fiber. By adding tin pyrophosphate and the polyolefin in the positive electrode lead paste, the capacity of a lead storage battery can be effectively increased and the service life thereof can be prolonged; and tin pyrophosphate and the polyolefin can work synergistically, and the addition of the two together achieves a better effect.

The invention belongs to the technical field of high polymer materials, and particularly relates to a polyolefin composite material as well as a preparation method and application thereof. The polyolefin composite material is prepared from the following raw materials: polyethylene, a polyolefin toughening agent, a compound flame retardant and a filler, the melt index of the polyethylene at 190 DEG C / 2.16 kg is greater than or equal to 18 g / 10 min, and the bending modulus is less than or equal to 160 MPa; the polyolefin toughening agent is selected from at least one of an ethylene-propylene copolymer, an ethylene-butylene copolymer and an ethylene-vinyl acetate copolymer, and the melt index at 230 DEG C / 2.16 kg is greater than or equal to 9 g / 10 min; the compound flame retardant comprises tetrabromobisphenol S bis (2, 3-dibromopropyl) ether, antimony trioxide and hydroquinone bis (diphenyl phosphate), and the filler is at least one of talcum powder, barium sulfate and wollastonite. Through specific types of polyethylene, the polyolefin flexibilizer, the compound flame retardant and the filler, excellent flame retardance and toughness can be obtained.

The invention provides a synergistic flame retardant-reinforced integrated antimony trioxide substitute flame retardant and a preparation method thereof, and belongs to the technical field of flame retardants. The preparation method comprises the steps of preparing a nickel-iron compound, preparing functional composite powder and mixing. The step of preparing the nickel-iron compound comprises the following steps: heating deionized water to 60-65 DEG C, adding nickel nitrate and ferric nitrate, uniformly stirring, adding a cerium nitrate solution and citric acid, stirring for 30-35 minutes, adding ethylene glycol and a kH560 coupling agent solution, stirring for 1.5-2.0 hours, standing, aging, drying, keeping the temperature at 320-350 DEG C for 1.0-1.2 hours, and keeping the temperature at 620-630 DEG C for 3.5-4.0 hours to obtain the nickel-iron compound; the antimony trioxide substituted flame retardant disclosed by the invention can completely and equivalently replace antimony trioxide in the field, and is high in flame retardant property, mechanical property and stability.

The invention relates to the technical field of power cables, and provides a flame-retardant power cable and a preparation method thereof. The flame-retardant power cable comprises a conductor, an insulating layer and a sheath layer which are sequentially arranged from inside to outside, and the sheath layer is prepared from, by weight, 40-60 parts of polyethylene, 60-80 parts of ethylene-vinyl acetate copolymer, 8-10 parts of compatilizer, 3-5 parts of auxiliaries, 15-20 parts of filler and 60-70 parts of flame retardant. The flame retardant is prepared from magnesium hydroxide, antimony trioxide, hydrated zinc borate and an aromatic bromine-containing compound in a mass ratio of 45: 8: 12: (25-30), and the number of bromine atoms of the aromatic bromine-containing compound is 6-8. According to the technical scheme, the problem of insufficient flame retardant property of the power cable in the prior art is solved.

The invention relates to the field of conductive film material processing, and particularly discloses a preparation process of a high-transparency conductive film, which comprises the following steps: S1, mixing aluminum oxide and zinc oxide to obtain mixed powder, grinding, and sintering to obtain an AZO target material; antimony trioxide and tin oxide are mixed to obtain a mixture, and the mixture is sintered into an ATO target material after being subjected to spheroidal graphite treatment; s2, mixing an AZO target material and an ATO target material to obtain a composite material, stirring to obtain a mixed material, sputtering the mixed material on a substrate through magnetron sputtering, controlling the preheating temperature of the substrate at 55-65 DEG C, and coating to obtain a finished product, the transparent conductive film has the advantages of high transparency, good conductivity and good flexibility.

The invention discloses a flame-retardant wear-resistant conveying belt for a coal mine and a preparation method thereof, and belongs to the technical field of wear-resistant conveying belts. Substances such as calcium nitrate tetrahydrate, ferric nitrate nonahydrate and antimony trioxide are subjected to hydrothermal coprecipitation to obtain multifunctional composite microspheres, the microspheres are aminated through a silane coupling agent KH-550 and then coated with silicon carbide, and coated composite microspheres are obtained; the preparation method comprises the following steps: carrying out graft copolymerization on nitrile rubber, octavinyl silsesquioxane and DOPO acrylate, compounding a quaternary phosphonium salt flame retardant to obtain modified nitrile rubber, carrying out three-stage mixing on the modified nitrile rubber, coated composite microspheres, conductive carbon black and other substances to obtain a rubber coating layer, carrying out double-sided calendering on the rubber coating layer and an epoxy resin plasticized aramid fiber skeleton layer, and carrying out vulcanization molding to obtain the composite material. And finally obtaining the flame-retardant wear-resistant conveying belt for the coal mine. The synergistic effect of high flame retardance, strong wear resistance and static electricity resistance is achieved, and the service life is prolonged.

The preparation method comprises the following steps: sequentially carrying out esterification reaction and polycondensation reaction on terephthalic acid, ethylene glycol, equol or a derivative thereof in the presence of the catalyst to generate the modified polyester, wherein the catalyst is prepared by enabling antimony trioxide, stannous octoate, tetrabutyl titanate and triphenyl phosphite to react in a solvent at the temperature of 100 DEG C or above; the modified polyester prepared by the method has relatively high intrinsic viscosity and fracture tensile strength, can meet the application requirements of special high polymer materials, and solves the problem that the application of semi-biomass PET copolyester in the field of special high polymer materials is limited in the prior art.

The application discloses a kind of flame-retardant ABS compositions, by parts by weight, including the following components: ABS resin 70-80 parts;Bromine flame retardant 16-20 parts;Aluminum phosphonate flame retardant 3-5 parts;Guanyl phosphate flame retardant 1-2 parts.The application can achieve 1.5mm V-0 flame retardation without adding antimony trioxide by compounding bromine flame retardant, aluminum phosphonate flame retardant, guanyl phosphate flame retardant, and has the advantages of high melt flowability, low density, good toughness, suitable for preparing lightweight vehicle parts.

The invention discloses an ABS (Acrylonitrile Butadiene Styrene) composite material and a preparation method thereof, and belongs to the technical field of high polymer materials, and the ABS composite material comprises the following raw materials in parts by weight: 41-70 parts of ABS resin, 14-24 parts of a flame retardant, 4-10 parts of modified basalt fiber, 10-20 parts of mint fiber antibacterial master batch and 2.2-6 parts of other auxiliaries. According to the flame retardant, the brominated flame retardant, the antimony trioxide and the piperazine pyrophosphate are compounded and have a good synergistic effect on improving the flame retardance, and the modified basalt fibers can improve the screw torque of the material, avoid the screw cracking problem and improve the flame retardance of the material at the same time. In addition, the mint fiber antibacterial master batch is adopted, so that bacterium breeding can be effectively inhibited, and the antibacterial property of the ABS material is improved.

The invention provides a high-performance flame-retardant nylon composite material and a preparation method thereof, and belongs to the technical field of flame-retardant nylon composite materials. The high-performance flame-retardant composite material comprises the following raw material components: glass fibers, antimony trioxide, brominated polystyrene, an acid-binding agent, nylon 6, a composite antioxidant, a heat stabilizer and a lubricant. The high-performance flame-retardant nylon composite material disclosed by the invention has excellent mechanical property, flame retardance and whiteness.

The invention belongs to the technical field of flame-retardant sponges, and discloses a carbonized flame-retardant chloroprene rubber sponge rubber plate with an open pore structure. Comprising 100 parts of chloroprene rubber, 4 parts of high-activity magnesium oxide, 5 parts of zinc oxide, 1 part of stearic acid, 0.5-1.5 parts of an accelerant DBTU, 1-1.5 parts of an accelerant ETU, 2 parts of an anti-aging agent, 3-5 parts of a foaming agent, 3-6 parts of a foaming promoter, 2-3 parts of PEG4000, 5-8 parts of a flame retardant TPP, 20-30 parts of zinc borate, 20-30 parts of antimony trioxide, 20-30 parts of a flame retardant, 10-15 parts of precipitated white carbon black and 15-20 parts of dibutyl phthalate. The foaming agent and the foaming aid are composed of a foaming agent H, urea ester and diethylene glycol. The advantages of chloroprene rubber are fused, flame-retardant auxiliaries including triphenyl phosphate, antimony trioxide, zinc borate, tris (2, 3-dibromopropyl) isocyanuric acid ester and triallyl isocyanuric acid ester are added, and the multiple auxiliaries have a synergistic effect to form a main flame-retardant action mechanism including heat absorption, dehydration, air isolation and rapid charring.

This invention discloses a flame-retardant PBT composite material, comprising the following components by weight: 40-73 parts PBT; 0.8-3.2 parts alkali lignin; 13-18 parts brominated flame retardant; 3-5 parts antimony trioxide; and 0.5-1 parts pentaerythritol. The weight-average molecular weight of the alkali lignin is 3000-10000. By selecting alkali lignin and pentaerythritol with specific molecular weights and using antimony trioxide as a laser color developer, this invention can effectively improve the laser marking defects of PBT composite materials modified with brominated flame retardants and has the advantage of thin-walled flame retardancy.

The invention relates to the technical field of rubber, and provides an insulating flame-retardant rubber tube for an automobile temperature control system and a preparation method of the insulating flame-retardant rubber tube. The insulating flame-retardant rubber tube for the automobile temperature control system sequentially comprises an inner contact layer, a reinforcing layer and an outer protective layer from inside to outside, the inner contact layer and the outer protective layer are consistent in formula and comprise nitrile rubber, ethylene propylene diene monomer, modified magnesium hydroxide, dioctyl phthalate, zinc oxide, an anti-aging agent, a vulcanizing agent and a processing aid; the reinforcing layer comprises chlorosulfonated polyethylene rubber, modified magnesium hydroxide, boron nitride phosphonitrile, antimony trioxide, diisononyl phthalate, an anti-aging agent, a vulcanizing agent, zinc oxide and a processing aid. According to the insulating flame-retardant rubber tube for the automobile temperature control system, the flame retardance is improved, and the problem that the insulating property is reduced in the long-term use process is solved.

The invention provides flame-retardant tread rubber as well as a preparation method and application thereof. The flame-retardant tread rubber is prepared from the following raw materials in parts by weight: 100 parts of matrix rubber, 24-35 parts of a composite flame retardant, 40-100 parts of filler, 1-4 parts of a silane coupling agent, 2-6 parts of an anti-aging agent, 1-3 parts of sulfur, 1-3 parts of an accelerant, 1-3 parts of stearic acid and 3-5 parts of zinc oxide, the composite flame retardant comprises a halogen flame retardant and an inorganic flame retardant, the inorganic flame retardant comprises an inorganic coating flame retardant, and the inorganic coating flame retardant comprises an antimony trioxide core and a molybdenum disulfide coating layer coating the surface of the antimony trioxide core. In the flame-retardant tread rubber disclosed by the invention, a molybdenum disulfide coating layer in the inorganic coating flame retardant can improve the stability of antimony trioxide at a high temperature, and can enhance the interfacial compatibility with a non-polar rubber matrix at the same time, and the synergistic reaction with the halogen flame retardant further improves the flame-retardant effect; therefore, the flame retardancy of the rubber is improved, and excellent mechanical properties are kept at the same time.

The invention discloses a method for separating and recycling components of a flame-retardant polyamide material, aiming at solving the problem of environmental pollution of flame-retardant polyamide waste plastic products, improving the resource recycling efficiency, providing a new way for supplying high-quality regenerated high-value chemicals for industrial production and innovating a new normal form for resource regeneration recycling economy development. The method comprises the following steps: decomposing the molecular structure of a nylon resin matrix in the flame-retardant polyamide material in an acidolysis manner so as to separate brominated polystyrene, reinforced fibers and other added and filled components from the nylon resin matrix; high-quality recovered products such as brominated polystyrene and antimony trioxide are obtained through separation, purification and recovery technologies such as solvent extraction and precipitation, and are circularly used for producing flame-retardant materials such as flame-retardant polyamide and flame-retardant polyester, so that resource recycling of high-value chemicals such as brominated polystyrene and antimony trioxide is realized; the method has remarkable economic benefits, environmental benefits and social benefits, and has a wide application prospect.

The invention relates to the technical field of plastic film production and processing, in particular to a flame-retardant BOPET film which comprises a BOPET base film. The BOPET base film is prepared from the following raw materials: a flame-retardant toughening agent; the flame-retardant toughening agent is prepared by taking terephthalic acid, ethylene glycol, antimony trioxide, trimethyl phosphate and a functional flame-retardant polymer as raw materials; the functional flame-retardant polymer is phosphate with a composite phosphorus structure. According to the flame-retardant BOPET film provided by the invention, the flame-retardant toughening agent is introduced into the base film, so that the flame-retardant property of the BOPET film can be remarkably improved under the condition of keeping good mechanical properties, and the requirements of high-end electronic and electrical and new energy automobile interior lamp scenes on safety materials are met.

The invention discloses high-strength chemically strengthened glass and a preparation method thereof, and relates to the technical field of glass. The chemically strengthened glass is prepared from the following raw materials: silicon dioxide, aluminum oxide, lithium oxide, sodium oxide, magnesium oxide, zirconium titanate, a cerium dioxide-yttrium oxide compound and a clarifying agent. The cerium dioxide-yttrium oxide compound is prepared from yttrium oxide and cerium dioxide; the clarifying agent is nano antimony trioxide. The preparation method of the high-strength chemically strengthened glass comprises the following steps: synthesis of zirconium titanate, preparation of a cerium dioxide-yttrium oxide compound, molding of a glass substrate, glass microcrystallization and preparation of the chemically strengthened glass. The chemically strengthened glass prepared by the invention is high in strength, and has excellent mechanical properties, impact resistance and acid and alkali resistance.

The invention discloses a high-dispersity antimony oxide flame-retardant master batch based on nano modification and a preparation method thereof, and belongs to the technical field of flame-retardant modification of high polymer materials. The flame-retardant master batch consists of the following components in percentage by weight: 30-50% of nano antimony oxide, 3-8% of a dispersion modifier, 40-65% of carrier resin and 1-5% of a dispersing aid. The preparation method comprises the steps of nano antimony oxide pretreatment, mixing, melt extrusion, granulation and the like. Nano antimony oxide is subjected to surface modification through the dispersion modifier, and the synergistic effect of the auxiliary dispersant and the carrier resin is combined, so that the surface energy of the nano antimony oxide is effectively reduced, the problem that the nano antimony oxide is easy to agglomerate in a polymer matrix is solved, and high dispersity is realized; meanwhile, the flame-retardant synergistic efficiency is remarkably improved, the stability of the flame-retardant property of the material is ensured, and the mechanical property and the processing fluidity of a high polymer material are not damaged.

The invention discloses a 105 DEG C environment-resistant cable meeting the UL2277 standard and a preparation method thereof, the cable comprises a conductor, an insulating layer and a sheath layer, the cable can be designed into a single-core or multi-core structure, the insulating layer takes ethylene-propylene-diene monomer and LDPE as base materials, and the base materials are matched with chemical method magnesium hydroxide and an organic composite flame retardant; the sheath layer uses CPE and EVA as composite base materials, and cooperates with magnesium hydroxide, aluminum hydroxide and antimony trioxide to construct a synergistic flame-retardant system. By optimizing the material formula and the structural design, the cable has excellent mechanical, flame-retardant, aging-resistant and oil-resistant properties in a dry environment of 105 DEG C, is suitable for fixed laying of a wind power generation tower drum and torsion laying of a cabin, is simple in preparation process and is suitable for large-scale production.

A kind of anti-spark ceramic and its body glaze, preparation method, use and ceramic tile, the body glaze is characterized in that, by mass fraction, its raw materials include: 3-12 parts of light calcium powder, 1-10 parts of magnesium oxide, 8-17 parts of dolomite powder, 6-12 parts of sodium sand, 6-12 parts of potassium sand, 0.5-6 parts of alumina and 10-25 parts of pottery clay, can also add tin dioxide, diantimony trioxide and zinc oxide as slurry conductive nanomaterial, can adjust both anti-spark property and anti-static property of ceramic to the best interval simultaneously.Anti-spark ceramic is provided with a body glaze layer prepared from the above-mentioned body glaze of anti-spark ceramic.The preparation method is used to prepare the above-mentioned anti-spark ceramic.The present application can solve the problem of friction impact sparking of other floor materials in the prior art, and also solve the problem that the anti-spark performance and anti-static performance of ceramic cannot be simultaneously achieved.

The invention discloses a special modified submicron antimony-based composite flame retardant for ABS (Acrylonitrile Butadiene Styrene). The special modified submicron antimony-based composite flame retardant is prepared from the following raw materials in parts by mass: 40 to 50 parts of submicron antimony trioxide, 20 to 25 parts of composite magnesium aluminum silicate, 20 to 25 parts of composite hydrophosphate, 2 to 5 parts of barium sulfate, 2 to 5 parts of superfine aluminum hydroxide and 2 to 5 parts of superfine magnesium hydroxide. Taking CTAB (cetyltrimethyl ammonium bromide), composite magnesium aluminum silicate and sodium stearate, mixing and reacting to obtain modified composite magnesium aluminum silicate; taking a silane coupling agent, submicron antimony trioxide and the modified composite magnesium aluminum silicate salt to react to obtain modified submicron antimony trioxide; taking a silane coupling agent, composite hydrophosphate and stearic acid to react to obtain modified composite hydrophosphate; finally, the modified submicron antimony trioxide, the modified composite hydrophosphate and the remaining raw materials are evenly mixed to obtain the special modified submicron antimony-based composite flame retardant for ABS, the special modified submicron antimony-based composite flame retardant for ABS has the good flame retardant effect and smoke suppression effect, and an ABS material prepared by mixing the special modified submicron antimony-based composite flame retardant with ABS resin can be used for production of new energy automobile key assemblies and high-end electronic and electrical components.

The present application belongs to the field of metallurgy, and relates to a method for producing antimony white by directly oxidizing crude antimony, comprising the following steps: S1, mixing crude antimony with crude antimony alloy, and reacting under an oxygen-containing atmosphere, to obtain oxidized slag and a melt after the reaction is completed; S2, adjusting the temperature of the melt, and then introducing compressed air to react, to produce antimony trioxide-containing flue gas, and to obtain antimony oxide slag after the reaction is completed. The present application makes full use of impurities such as sodium sulfide, sodium hydroxide and sodium thiosulfate contained in crude antimony, and innovatively uses these components for arsenic removal reaction, which not only avoids the cumbersome steps of adding various auxiliary materials in the traditional process, but also enables the original sodium sulfide, sodium hydroxide and sodium thiosulfate in the crude antimony to fully play a synergistic role, showing excellent performance in arsenic removal effect, thus simplifying the process flow, significantly reducing the production cost, and realizing the dual improvement of economic benefit and process efficiency.

The invention relates to the technical field of preparation of inorganic chemical materials, and discloses a controlled synthesis process of a high-temperature-resistant sodium antimonate crystal structure, which comprises the following steps: dispersing antimony trioxide in a sodium hydroxide aqueous solution with the initial concentration of 6.5-8.0 mol / L, and adding sodium metaaluminate as a lattice directing agent to prepare a precursor base solution; heating the base solution, maintaining turbulent stirring, executing double-flow-path synchronous compensation, dropwise adding a hydrogen peroxide aqueous solution and synchronously adding sodium hydroxide; the method comprises the following steps: dynamically setting a coupling relationship among an alkali supplementing rate, an oxidation rate and a reaction stoichiometric ratio, counteracting a dilution effect of water generated by reaction and solvent water in real time, and maintaining the concentration of free sodium hydroxide in a mother solution in the whole reaction process at 6.0 mol / L or above until a reaction endpoint is reached. The path of lattice interstitial water or surface hydroxyl is blocked, anhydrous sodium antimonate without crystal water removal steps in the whole temperature range is prepared, and the foaming problem in high-temperature processing is solved.

The invention discloses a preparation method of a lotus-shaped nano antimony trioxide doped methyl methacrylate polymer film, which comprises the following steps: firstly, preparing a lotus-shaped nano antimony trioxide material, and then taking the prepared lotus-shaped nano antimony trioxide material as a dopant of the methyl methacrylate polymer film to prepare the lotus-shaped nano antimony trioxide doped methyl methacrylate polymer film. And thermally polymerizing a layer of polymer film on the metal substrate. The film layer prepared by the method has high corrosion potential, low corrosion current and large impedance, which indicates that the film layer has good corrosion resistance. The coating can be applied to anticorrosion engineering of surfaces of electrical equipment such as air conditioners, electric water heaters, air conditioners and refrigerators and metal parts of mechanical equipment such as tractors and cranes.

This invention relates to the field of chemical process technology, specifically to a method for preparing sodium hexafluoroantimonate. The preparation method includes the following steps: (1) adding antimony trioxide, hydrogen fluoride aqueous solution, and sodium fluoride into a reaction vessel, stirring and heating, introducing a fluorine-nitrogen mixed gas, and then refluxing the reaction; (2) filtering and then flash evaporation concentration; (3) subsequently cooling and crystallizing at 0~15℃, and centrifuging to obtain sodium hexafluoroantimonate crystals. The preparation method provided by this invention can achieve fluorination, oxidation, and salt formation in one step simultaneously, with a simple process route and a significant reduction in steps; using low-concentration fluorine gas as an oxidant and fluorine source, the atom utilization rate is high, the reaction rate is fast, the raw material consumption is close to the stoichiometric ratio, the final product has a trivalent antimony residue of ≤0.01%, and the product purity is as high as 99.9%; combined with flash evaporation concentration, hydrogen fluoride and mother liquor recovery and recycling process, it can reduce raw material consumption and waste liquid discharge, thereby improving product yield and reducing production costs.

The application relates to the technical field of chemical protection materials, and discloses a hydrofluoric acid protective garment and a preparation method thereof. The material of the protective garment comprises a 5-layer structure, the middle layer is a framework fabric, and modified natural rubber layers and modified EPDM (ethylene propylene diene monomer) rubber layers are sequentially arranged on the two sides of the framework fabric. The raw materials of the modified natural rubber comprise, by weight parts, natural rubber 100 parts, sulfur 3-4 parts, accelerator M 1-2 parts, accelerator DM 1-2 parts, zinc oxide 4-6 parts, stearic acid 1-2 parts, white carbon black 10-15 parts, calcium oxide 20-40 parts, chlorinated paraffin 5-15 parts, antimony trioxide 5-15 parts and antioxidant 4010NA 1-2 parts. The modified natural rubber and the modified EPDM rubber are used as main protection substances, and organic solvents are used as carriers, so that the hydrofluoric acid protective garment not only has long-acting protection capability for hydrofluoric acid, but also has the characteristics of high mechanical strength, heat aging resistance, flame resistance and low-temperature softness.