344 results about "Polyphosphate" patented technology

The invention belongs to the technical field of flame retardants, and particularly relates to a high-thermal-stability polyphosphate flame retardant and a preparation method thereof. The DOPO is modified through the polyethylene glycol acrylate, methyl methacrylate and dicumyl peroxide composite solution, double bonds of the polyethylene glycol acrylate and P-H bonds of the DOPO can be subjected to nucleophilic addition to form stable C-P bonds, and thermal migration of the DOPO is hindered; dOPO has polymerization double bonds of methyl methacrylate and long carbon chains of polyethylene glycol acrylate, so that the compatibility of the polyphosphate flame retardant and a polymer substrate is improved, and phase separation is avoided; maleic anhydride grafted silicone oil is connected to the surface of an amino modified gamma-cyclodextrin-modified DOPO inclusion compound, so that the polyphosphate flame retardant has high thermal stability and high compatibility after long-chain alkyl modification; amino groups in the modified gamma-cyclodextrin react with maleic anhydride grafted silicone oil to generate an amido bond cross-linked network, so that the thermal migration of DOPO is reduced together, and the high thermal stability of the polyphosphate flame retardant is improved.

The invention discloses a flame-retardant ABS (Acrylonitrile Butadiene Styrene) composition as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The flame-retardant ABS composition provided by the invention comprises the following components in parts by mass: 50-80 parts of ABS resin; 8 to 12 parts of styrene-acrylonitrile copolymer; 3 to 5 parts of styrene-acrylonitrile-maleic anhydride terpolymer; 2 to 6 parts of a fluorine-containing maleimide copolymer; 5 to 15 parts of graphite nanosheet modified high rubber powder; 12 to 18 parts of brominated flame retardant; 3-7 parts of a phosphorus-based flame retardant; 0.1-1 part of a processing aid; the phosphorus-based flame retardant is prepared from the following components in parts by mass: 80 to 95 parts of diethyl phosphinate; 0.3 to 3 parts of ethyl butyl phosphinate; 0.1 to 2 parts of ethyl phosphonate; and 5 to 20 parts of melamine polyphosphate. The flame-retardant ABS composition prepared by the invention is good in flame retardant property, good in welding strength and low in cost.

The invention provides a self-repairing hydrated salt phase change microcapsule as well as a preparation method and application thereof, and belongs to the field of phase change materials. The preparation method comprises the following steps: preparing a hydrated salt phase change material and sorbitol into eutectic melt by adopting a melting method; strontium carbonate, sorbitol grafted nano titanium dioxide, SiO2-coated silicone rubber microspheres, hollow Al2O3 microspheres, tannic acid microcapsules, alpha-zirconium phosphate, melamine polyphosphate, diethyl aluminum hypophosphite, carboxylated multi-walled carbon nanotubes, polydopamine modified boron nitride nanosheets and hydrophilic fumed silica are added into the eutectic melt, and blending is performed to obtain a core material; The preparation method comprises the following steps: adding strontium carbonate, sorbitol grafted nano titanium dioxide, SiO2-coated silicone rubber microspheres, hollow Al2O3 microspheres, tannic acid microcapsules, alpha-zirconium phosphate, melamine polyphosphate, diethyl aluminum hypophosphite, carboxylated multi-walled carbon nanotubes, polydopamine modified boron nitride nanosheets and hydrophilic fumed silica into the eutectic melt; bio-based polyurethane-polyurea is used as a shell material, the core material is coated in the shell to prepare the microcapsule, and the temperature of the coating operation is not higher than the phase change temperature of the hydrated salt phase change material; the surface is coated with a super-hydrophobic coating. According to the invention, a solid filler system is constructed, and a low-temperature preparation process is combined, so that the phase-change microcapsule with high performance, high reliability and high safety is developed.

The invention discloses a comb-type polyphosphate polymeric dispersant and a preparation method thereof, the dispersant is prepared by preparing a phosphate monomer from acrylate and phosphorus pentoxide, then copolymerizing the phosphate monomer with phenyl alkene or alkyl alkene, and finally adding alkali liquor for neutralization. A phosphate-polyether bifunctional side chain is introduced to a main chain, a phosphate group provides electrostatic repulsion, and a polyether group enhances steric hindrance, so that the dispersing agent can meet the requirements of strong adsorption and long-range stability at the same time, and a more durable and effective stabilizing effect is provided for a dispersion system.

A sheet molding compound (SMC) composition formulation including a curable resin, such as unsaturated polyester of vinyl ester, in an ethylenically unsaturated monomer; a low profile additive, in a curable solvent; and an intumescent additive, such as melamine polyphosphate or ethylene diamine phosphate. An article formed of the SMC composition formulation experiences no more than a 100% increase in thickness as compared to an initial thickness of the article after exposure to a flame. The low profile additive is present in the composition and the intumescent additive is present in the composition. The resulting article has a char strength at 3 mm thickness of between 100 and 1,000 Newtons.

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 preparation of phosphorus removal agents, and particularly relates to a composite phosphorus removal agent and a preparation method and application thereof. The composite phosphorus removal agent comprises a honeycomb carrier and microspheres, the microspheres are loaded on the honeycomb carrier; the microspheres are prepared from the following raw materials: polyvinylidene fluoride particles, graphene oxide, ZrOCl2 and phosphorus-accumulating bacteria. The composite phosphorus removal agent comprises a honeycomb carrier, microspheres and microcapsules, wherein the microspheres and the microcapsules are loaded on the honeycomb carrier; capturing phosphate radicals in a water body by the microspheres and carrying out biological phosphorus removal and adsorption phosphorus removal; the honeycomb carrier also has the effect of adsorbing phosphate; and the two synergistically remove phosphate in the water body, so that the phosphorus removal effect of the phosphorus removal agent is improved, and the burden of the water body is not increased.

This invention discloses a gypsum-based lightweight flame-retardant board and its preparation method, relating to the field of building materials technology. The gypsum-based lightweight flame-retardant board prepared by this invention is made by foaming a gypsum substrate with a foaming agent and a composite stabilizer, then introducing a self-made flame retardant and other raw materials, casting it between two layers of facing paper, and drying it. The composite stabilizer includes a modified acrylamide copolymer and acrylamide hydrogel. The modified acrylamide copolymer is obtained by copolymerizing N-isopropylacrylamide with silane acrylic acid and then reacting it with hyperbranched polyphosphate. The acrylamide hydrogel is obtained by polymerizing acrylic acid and acrylamide through an aqueous solution. The self-made flame retardant is obtained by reacting ammonium polyphosphate with a hydroxy heterocyclic amino alcohol. The hydroxy heterocyclic amino alcohol is obtained by reacting a heterocyclic amino alcohol with a double-terminated hydroxyl polyphenylene ether. This process gives the gypsum-based lightweight flame-retardant board excellent flame retardancy, mechanical properties, and flame-retardant stability.

The invention relates to high-elasticity high-adhesive-force UV curing flexible printing ink and a preparation method thereof, and relates to the technical field of printing ink, the high-elasticity high-adhesive-force UV curing flexible printing ink comprises aliphatic polyurethane acrylate, a polyphosphate acrylate oligomer, core-shell structure polyurethane-acrylate microspheres, hexanediol diacrylate, isobornyl acrylate, a photoinitiator and a pigment, and a functional auxiliary agent. The polyphosphate acrylate oligomer realizes strong anchoring of a base material through a phosphate group, and meanwhile, a flexible chain segment of the polyphosphate acrylate oligomer interacts with the aliphatic polyurethane acrylate resin to form a continuous phase; the acrylate shells of the core-shell structure microspheres are covalently bonded with the matrix resin, and the elastic cores of the core-shell structure microspheres are uniformly dispersed in the resin as stress dissipation units. Through the synergistic effect, firm adhesion of a cured film layer can be achieved through interface chemical bonds, stress can be effectively dispersed through deformation of the microspheres when the cured film layer is subjected to external force, and therefore excellent adhesive force and outstanding flexibility are obtained.

The invention relates to the technical field of photo-anodes, in particular to a composite photo-anode with transition metal ions embedded into phosphoric acid small organic molecules and a preparation method of the composite photo-anode. The preparation method comprises the following steps: S1, soaking a bismuth vanadate photo-anode in a phosphoric acid small organic molecule solution, and then performing annealing treatment to obtain a phosphoric acid small organic molecule / photo-anode; and S2, soaking the phosphoric acid small organic molecule / photo-anode in a transition metal salt solution to obtain the composite photo-anode. According to the invention, hole storage and transmission functions of polyphosphoric acid small organic molecules and surface rapid water oxidation reaction kinetics of metal ions are synergistically utilized, on one hand, the electron-hole separation efficiency of bismuth vanadate is improved through hole storage, and on the other hand, surface hydroxyl groups of the polyphosphoric acid small organic molecules and transition metal ions are anchored; bismuth vanadate surface electron-hole separation and water oxidation kinetics are synergistically enhanced, charge recombination is synergistically inhibited, charge transfer power is promoted, and the photocurrent density and the water decomposition hydrogen production capacity of the photoanode are improved.

The invention provides an electrolyte additive for synergistically regulating and controlling activity and stability of an all-vanadium redox flow battery and application of the electrolyte additive, the electrolyte additive is a composite additive of an organic amino acid compound and inorganic phosphate, the organic amino acid compound is one of aspartic acid, glycine and cysteine, and the inorganic phosphate is one of amino acid, glycine and cysteine. The inorganic phosphate is one or two or more of phosphate, dihydric phosphate, dihydric phosphate, polyphosphate and pyrophosphate, and cations of the inorganic phosphate are one or two or more of potassium, sodium and ammonium salt. The composite additive is used as an electrolyte additive to be added into an all-vanadium redox flow battery electrolyte, so that the vanadium electrolyte can be effectively prevented from generating precipitates at high temperature, the capacity fading in the battery operation process is avoided, and the stable operation of the battery is realized. The preparation process is simple to operate, energy-saving, environment-friendly and low in cost, and stable operation of the electrolyte in the battery can be realized.

The invention relates to the field of chemical synthesis, in particular to a preparation method of chlorinated alkyl polyphosphate, which comprises the following steps: mixing diethylene glycol and gamma-valerolactone, slowly adding phosphorus oxychloride, and reacting at 20-50 DEG C to generate a reaction solution containing an intermediate; adding gamma-valerolactone and an IL (at) MOFs-P catalyst into the reaction solution, slowly adding epoxypropane, and reacting at 130-150 DEG C in a nitrogen atmosphere to generate a target product mixed solution; and recovering gamma-valerolactone through distillation, centrifugally separating the catalyst, regenerating and recycling, and purifying a crude product to obtain a final product. The green solvent gamma-valerolactone is adopted and recycled, the IL-coated MOFs-P catalyst is high in activity and can be recycled, side reactions are reduced by accurately controlling reaction conditions, the product yield reaches 90% or above, the purity exceeds 98%, and the method has the advantages of being green, environmentally friendly, economical and efficient.

The invention relates to the technical field of flame-retardant high polymer materials, in particular to a high-temperature-resistant and high-humidity-resistant flame-retardant polypropylene composite material and a preparation method thereof. The invention provides a high-temperature-resistant and high-humidity-resistant flame-retardant polypropylene composite material. The high-temperature-resistant and high-humidity-resistant flame-retardant polypropylene composite material consists of polypropylene, a mixed silane modified intumescent flame retardant, a flame-retardant aid NOR 116 and a compatilizer According to the invention, bis [3-(trimethoxysilyl) propyl] amine / triacetoxyvinyl silane is mixed to modify an intumescent flame retardant, which is composed of piperazine pyrophosphate as a main flame retardant and melamine polyphosphate, aluminum hypophosphite or aluminum diethylphosphinate as a secondary flame retardant; a plurality of active silicon hydroxyl sites after silane hydrolysis are mixed, and single flame retardants are connected together to form a macromolecular intumescent flame retardant, so that the modified intumescent flame retardant is still difficult to migrate or separate out from a polypropylene matrix even under high-temperature and high-humidity conditions, and the weather resistance of flame-retardant polypropylene is greatly improved.

The invention discloses a water-based metal anticorrosive paint and a preparation method thereof, and belongs to the technical field of water-based paints. The hyperbranched polyphosphate and the water-based alkyd resin can be subjected to a cross-linking reaction to form a compact network structure, the hyperbranched polyphosphate and a metal interface also have good bonding performance, the adhesiveness of a coating is improved, the water-based alkyd resin has good flexibility, the integrity of the coating is kept, and the water-based alkyd resin has good adhesion to the metal interface. Corrosion media are prevented from permeating, and the purpose of protecting metal for a long time is achieved; by adding the glass flakes, a complex and zigzag path can be formed in the coating, corrosion media are further prevented from permeating into metal, and therefore the corrosion resistance of the coating is improved; the organosilane-modified nano cerium oxide particles can be directionally distributed in the coating, oxygen diffusion is blocked, a rare earth conversion film can be formed on the surface of a metal base material, and a stable passivation layer is generated through hydrolysis, so that electrochemical corrosion is inhibited.

A negative electrode material for secondary battery use includes silicon-containing particles and coating layers covering at least part of the surfaces of the silicon-containing particles. The silicon-containing particles each include an ion conductive phase and silicon phases dispersed in the ion conductive phase. The coating layers contain at least one phosphate compound selected from the group consisting of a phosphate compound, a polyphosphate compound, and a metaphosphate compound, each of which contains an anion represented by general formula (1):In general formula (1), A represents an organic group or an oxygen atom.

The invention discloses a cellulose microcrystal reinforced degradable flame-retardant PLA composite material and a preparation method thereof, and belongs to the field of bio-based functional polymer materials. The composite material is prepared from the following components in parts by weight: 80 to 100 parts of polylactic acid (PLA), 3 to 10 parts of bamboo cellulose microcrystal, 3 to 10 parts of biomass polyphosphate, 1 to 5 parts of GO-g-PLA, 10 to 30 parts of PBAT toughening agent and 0.2 to 1 part of auxiliary agent. The preparation method comprises the following steps: (1) preparing high-crystallinity bamboo cellulose microcrystals by adopting a supercritical CO2 method; (2) preparing a GO-g-PLA interface compatilizer through graft polymerization; (3) synthesizing a biomass polyphosphate flame retardant by taking pentaerythritol and diphenolic acid as raw materials; and (4) melting, blending and extruding the components. Through the synergistic effect of a flame retardant-GO-BCMC three-dimensional network, the material has excellent mechanical properties (the tensile strength is 45-47 MPa, and the impact strength is 10-12 kJ / m), high flame retardance (LOI is 28-29%, UL-94 V-0 level) and environmental friendliness (the 180-day biodegradation rate gt); the composite material can be widely applied to the fields of electronic and electric appliances, automotive trim, medical materials and the like.

The application discloses a kind of high-altitude area weathering bridge steel member rust layer stabilizing treatment agent and use method, mainly solve the rust layer of high-altitude area weathering bridge steel member is difficult to stabilize and surface rust layer color is not uniform, rust liquid flow and other problems.The stabilizing treatment agent is composed of fast rusting agent and rust layer stabilizer, the fast rusting agent is composed of ferric chloride, copper sulfate, hydrogen peroxide, ethylene glycol and deionized water, the rust layer stabilizer is composed of sodium polyphosphate, sodium bisulfite and methanol and deionized water.The treatment agent of the application is suitable for the harsh environment of low temperature, oxygen is rare, inorganic salt system treatment agent is prone to icing in high sea area, the surface of high-altitude area weathering bridge steel member after processing forms brown rust layer with uniform color, no rust liquid flow.The rust layer of weathering bridge steel member can be stabilized within 8 hours by using the application, the thickness of the rust layer after processing is greater than or equal to 50 μm, the surface rust layer color difference value ΔE of different parts of the component is less than or equal to 10, and the amount of surface rust layer of the component is greater than or equal to 15 g / m 2 .

The invention relates to lactobacillus plantarum-derived inorganic polyphosphate and application thereof in promoting cell proliferation. The preparation method of the lactobacillus plantarum-derived inorganic polyphosphate comprises the following step: extracting from lactobacillus plantarum by using glass milk. According to the invention, long-chain PolyP (PolyPLp) with the chain length of about 250 phosphate residues is extracted and purified from lactobacillus plantarum by using glass milk. And the effect of promoting cell proliferation is proved. An IL-1beta-induced Caco-2 intestinal epithelial cell barrier injury model is utilized, it is found that PolyP has the function of relieving intestinal inflammation, the effect of PolyP has chain length dependence, and the action effect of PolyPLp is optimal.

This invention belongs to the field of polymer additive technology, and provides an additive composition and its application. The additive composition comprises, by weight, the following components: 65-84 parts of aluminum diethylphosphinate, 7-16 parts of melamine polyphosphate, 7.5-16 parts of flame retardant synergist, and 0.1-1 parts of aluminum alkylphosphinate; the water content in the additive composition is 0.4%-0.6% by weight. Through the design and synergistic effect of the components, and by controlling the water content, this invention enables the additive composition to possess excellent flame retardant properties, stability, and anti-exudation properties. The additive composition is used for flame retardancy in polymer systems, particularly enabling polyamide compositions containing it to exhibit excellent flame retardant properties, flame retardant stability, and high-temperature and high-humidity resistance. It maintains excellent flame retardancy even after high-temperature and high-humidity aging, and inhibits or avoids additive exudation problems, greatly improving the overall performance of flame-retardant polyamides.

The present application relates to a kind of colored polyester film for lithium battery termination tape, belong to polyester film technical field, the colored polyester film is the three-layer structure film of surface layer-core layer-surface layer;Wherein, the composition raw material of the surface layer includes polyester chip;The composition raw material of the core layer includes polyester chip and color masterbatch.The present application is made into product with stronger cohesion strength by forming compact network structure on one hand;On the other hand, by introducing material with larger steric hindrance and introducing material that can make the steric hindrance of system single bond rotation larger, to play stronger steric hindrance effect;In this way, from two aspects, the colored polyester film product made can effectively have excellent electrolyte resistance.In addition, in order to prevent the precipitation of color, the present application also adds molybdenum zinc polyphosphate hydrate to prevent the exudation of color, so it can show excellent protection performance to the color body in system to make the colored polyester film product without color precipitation.

The application provides an injectable tissue repair material and a preparation method and application thereof, and the injectable tissue repair material comprises A component and B component; the A component comprises collagen doped with polyphosphate; and the B component comprises an inorganic salt solution.In the application, the injectable tissue repair material can uniformly cover or fill in uneven or cavity-existed wound surfaces, effectively promotes wound healing, can control the release of polyphosphate, has good stability and can be stored for a long time.

The invention belongs to the field of polyurethane materials, and particularly discloses a flame-retardant polyurethane material as well as a preparation method and application thereof. The flame-retardant polyurethane material comprises the phosphorus flame retardant, the melamine polyphosphate and the barium metaborate, the phosphorus flame retardant, the melamine polyphosphate and the barium metaborate have a synergistic effect, a continuous, compact and glassy-state-like carbon barrier layer is formed at the burning position of the material, halogen-free flame retardance of the polyurethane material can be achieved, and molten drops can be effectively prevented. Besides, the polyurethane material disclosed by the invention is proper in component and dosage, so that the material formability is good, bubbles and flame retardant precipitation after the material is formed can be avoided, and the utilization rate of the flame retardant is increased.

This invention proposes a perfluorohexanone (PFH) fire extinguishing microcapsule and its preparation method. The PFH fire extinguishing microcapsule is used to achieve self-ignition fire extinguishing function in new energy storage devices. The PFH fire extinguishing microcapsule includes a capsule wall and a capsule core. The capsule core contains liquid perfluorohexanone. The capsule wall includes a superimposed inner shell layer and an outer shell layer. The inner shell layer contains a gelatin / montmorillonite / sodium polyphosphate composite, and the outer shell layer contains polyisocyanate-phenolic resin. The inner shell layer, made of gelatin / montmorillonite / sodium polyphosphate composite, has good stability and heat resistance. The outer shell layer, made of polyisocyanate / phenolic resin, provides excellent encapsulation of perfluorohexanone and maintains structural integrity under high-temperature conditions. This prevents the extinguishing agent from being released before a fire occurs or when it is not needed, ensuring that the extinguishing agent functions at the most critical moment, enhancing the release effect of perfluorohexanone, and improving the overall system safety and fire extinguishing effect.

The application discloses a gold leaching method for pyrite-containing gold ore, and comprises the following steps: after the pyrite-containing gold ore is finely ground, water is added to obtain a slurry; a gold leaching reagent solution is added into the slurry to obtain a mixed leaching solution; the pH value of the mixed leaching solution is adjusted to alkaline, and leaching treatment is performed; and after filtration, a gold-containing leaching solution is obtained; the gold leaching reagent solution comprises polyphosphate, copper salt and thiosulfate; in the gold leaching reagent, polyphosphate is added; under alkaline conditions, polyphosphate ions can be selectively adsorbed or complexed on the surface active sites of pyrite to form a physical or chemical masking layer, thereby effectively blocking the direct contact of pyrite with dissolved oxygen and thiosulfate in the solution, inhibiting the catalytic decomposition of pyrite, significantly reducing the invalid consumption of thiosulfate, stabilizing the pH value and potential of the leaching system, and guaranteeing the efficient leaching of gold.

The invention relates to the technical field of cables, and discloses a high-shielding flame-retardant fire-resistant control cable and a preparation method thereof. The high-shielding-property flame-retardant fire-resistant control cable comprises a wire, a shielding layer, an insulating layer and a flame-retardant fire-resistant polyethylene sheath material, the flame-retardant fire-resistant polyethylene sheath material comprises sodium carboxymethyl cellulose, hyperbranched polyphosphate, polyethylene resin and an antioxidant. The hyperbranched polyphosphate contains a large number of flame-retardant phosphate groups, the phosphate groups are combusted to generate phosphoric acid substances, cellulose can be promoted to be dehydrated into carbon, a carbon barrier layer is formed on the surface of the polyethylene sheath material, the limit oxygen index and the UL-94 grade of the sheath material can be remarkably improved without adding aluminum hydroxide and other inorganic flame retardants, and the flame-retardant performance of the sheath material is improved. And the flame retardant performance is excellent, and the cable has good practical application in the aspects of flame-retardant and fire-resistant control cables and the like.

This invention discloses a flame-retardant rubber and its preparation method. The flame-retardant rubber, by weight, comprises: 45-65 parts of ethylene-vinyl acetate copolymer; 12-20 parts of ethylene propylene diene monomer (EPDM) rubber; 3-6 parts of maleic anhydride-grafted ethylene-vinyl acetate copolymer; 8-12 parts of phosphorus-modified nanocellulose; 2-5 parts of submicron zinc borate; 2-4 parts of melamine polyphosphate; 0.5-2.5 parts of graphene; 1-2.5 parts of phosphorus-containing flame-retardant plasticizer; and 1-4 parts of multifunctional acrylate crosslinking agent. This application replaces traditional melamine with melamine polyphosphate (MPP). MPP has higher thermal stability, its decomposition temperature matches the char formation window of P-NC more closely, and it has its own phosphorus source, enabling a complementary and continuous phosphoric acid supply with P-NC on both the time and temperature axes, thus solving the problem of insufficient phosphorus catalysis after reducing the amount of P-NC alone.

According to the method, melamine and urea are used as carbon and nitrogen sources, hollow tubular phosphorus-doped carbon nitride is constructed by adopting a sodium polyphosphate-assisted hydrothermal-thermal polymerization method, molybdenum disulfide is loaded on the surface of P-TCN in a hydrothermal in-situ growth mode, and the hollow tubular phosphorus-doped heterojunction photocatalyst is obtained. The hollow tubular phosphorus-doped heterojunction photocatalyst P-TCN / MoS2 is prepared; the catalyst disclosed by the invention shows excellent degradation performance on ciprofloxacin, levofloxacin, rhodamine B and methylene blue under an illumination condition. The catalyst disclosed by the invention is simple in preparation method, low in cost and easily available in raw materials, and has a wide application prospect in the field of photocatalytic treatment of antibiotic and dye wastewater.

Based on experimental data, observed i n the Personalized Medicine Laboratory of the requesting institute, which reveal an increase in the inorganic polyphosphate (iPolyp) in fecal samples from subjects affected by colorectal cancer compared to samples from individuals not affected by the same disease, inorganic polyphosphate is suggested as a novel non-invasive biomarker to be detected in fecal samples for the early diagnosis of colorectal cancer, to be associated with other screening methods such as fecal occult blood, in order to provide greater predictivity, i.e., the probability that a subject with a positive diagnostic test is actually affected by colorectal cancer.

The present application relates to a kind of polyaspartic ester explosion-proof paint and its preparation method and application.The paint is composed of component A and component B, component A includes by weight parts: polyaspartic ester resin 100 parts, fluorosilicon block copolymer 1-5 parts, isocyanate modified graphene 0.8-1.2 parts, surface treated sodium bicarbonate powder 5-20 parts, melamine polyphosphate 10-30 parts, dispersing agent 0.5-1.0 parts, defoaming agent 0.2-0.5 parts and leveling agent 0.2-0.4 parts;Component B is hexamethylene diisocyanate trimer 60-120 parts by weight parts.The paint has low VOC, high solid content, fast drying, corrosion resistance and other properties, through fluorosilicon block copolymer realizes anti-sticking, surface treated sodium bicarbonate high temperature release gas forms air curtain, modified graphene rapid heat conduction, melamine polyphosphate flame retardant, forms "prevention-separation-dispersion-inhibition" multi-level synergistic protection mechanism.

The invention discloses a method for preparing a slow release fertilizer while recovering fluorine in phosphate tailings and raffinate acid, and belongs to the technical field of clean processing and utilization of phosphorus resources. According to the method, resource utilization of the raffinate acid and the phosphate tailings is achieved, the utilization rate of phosphorus resources in the raffinate acid is increased, and the adverse effect of phosphate tailing stockpiling on the environment is reduced. According to the method, efficient recovery of fluorine resources in the raffinate acid and the phosphate tailings can be achieved, the utilization efficiency of the fluorine resources is further improved through step-by-step recovery, the escape form of fluorine can be regulated and controlled by introducing the active diatomite, and corrosion is reduced. Meanwhile, a calcium polyphosphate slow-release fertilizer which is rich in medium trace elements such as calcium, magnesium and sulfur can be prepared at the same time, phosphorus exists in a polymerization state and cannot be rapidly fixed, orthophosphate is slowly released as time goes on, the requirements of crops are met, and the calcium polyphosphate slow-release fertilizer is a novel phosphate fertilizer product with a relatively good prospect. Therefore, the method has good economic benefits, social benefits and wide industrial application prospects.