28 results about "Triphosphoric acid" patented technology

The invention discloses a light high-strength fireproof decorative material as well as a preparation method and application thereof, belongs to the technical field of fireproof decorative materials, and aims at solving the technical problem that the fire resistance rating, the water absorption performance and the mechanical strength of a light fireproof material in the prior art need to be further improved. The lightweight concrete is specifically prepared from the following components in parts by weight: 80-100 parts of a silicon-calcium material, 8-10 parts of modified triphosphoric acid, 10-14 parts of a modified fiber reinforcement, 15-18 parts of modified lightweight aggregate, 5-8 parts of an adhesive and 2-3 parts of an additive, the modified triphosphoric acid is used as a flame retardant, the lightweight aggregate is pretreated, the fiber reinforcement is improved, and the lightweight high-strength fireproof decorative material is prepared through mutual cooperation with the additive, so that the fireproof performance and compressive strength of the material are improved, and the volume density of the material is reduced.

The invention relates to a high-performance concrete admixture composition for a wind power tower drum and a preparation method of the high-performance concrete admixture composition, and relates to the field of concrete admixtures. The water reducing agent is prepared from the following components in parts by weight: 35 to 45 parts of a shrinkage reducing type polycarboxylic acid water reducing agent, 8 to 12 parts of methoxy polyethylene glycol acrylate modified nano silicon dioxide, 1.5 to 2.5 parts of sodium dodecyl polyoxyethylene ether sulfonate, 0.8 to 1.5 parts of coconut oil diethanolamide, 0.3 to 0.8 part of sodium polyacrylate, 0.2 to 0.6 part of ammonium tripolyphosphate, 0.05 to 0.15 part of a polyether defoaming agent and 40 to 50 parts of water. According to the invention, the hydration process of the concrete is regulated and controlled through the synergistic interaction among various additives, the pore structure in the concrete is optimized, and an interface transition region is strengthened, so that the systematic improvement of the microstructure of the concrete is realized, and the strength and durability of the concrete are remarkably improved.

The application relates to a high-anticorrosion oil filler assembly plate and a processing technology thereof, and relates to the technical field of oil filler assembly plates.The high-anticorrosion oil filler assembly plate comprises an assembly plate body and an anticorrosion coating, the anticorrosion coating is obtained by coating anticorrosion paint on the surface of the assembly plate body, the anticorrosion paint comprises water-based epoxy resin 37-43%, fillers 15-19%, a curing agent 4-8%, a defoaming agent 1-3%, a leveling agent 1-2%, and the rest is filled with toluene to 100%; the fillers comprise aluminum tripolyphosphate, glass flake and polyaniline; and the application has the effect of improving the anticorrosion performance of the oil filler assembly plate.

The invention discloses a rolling method for an antibacterial titanium alloy plate, relating to the technical field of titanium alloy materials. An antibacterial agent, modified chitosan and guar gum are mixed, glycerol is used as a plasticizer, and ammonium tripolyphosphate is used as a cross-linking agent to prepare an antibacterial coating, which is then coated on the surface of the titanium alloy. The alkylated chitosan has a long hydrophobic chain and is tightly cross-linked with the guar gum under the cross-linking action of sodium tripolyphosphate, thereby synergistically improving the hydrophobic effect of the coating and blocking the adhesion of moisture and bacteria. Silver nanoparticles are evenly dispersed on the surface of montmorillonite. Through the effective combination of the two antibacterial effects, the antibacterial effect of the coating is fully exerted, while also protecting the titanium alloy plate and improving its corrosion resistance.

The invention discloses a production and preparation process of a heavy-duty water-based epoxy primer applicable to a high-salt and high-humidity environment, and relates to the technical field of production of water-based epoxy primers. Comprising the following raw materials in parts by mass: 30-50 parts of bisphenol A type water-borne epoxy resin emulsion, 10-20 parts of a curing agent T-31, 3.5-5 parts of a reinforced anti-settling agent, 8-12 parts of zinc phosphate, 5-8 parts of aluminum triphosphate, 10-15 parts of precipitated barium sulphate, 3-6 parts of silica powder, 0.8-1.2 parts of a sodium polyacrylate dispersing agent, 0.4-0.8 part of an organic silicon defoaming agent and 0.3-0.7 part of an acrylate flatting agent. And 0.6-1 part of a polyurethane thickening agent. The bentonite and the modified zirconium phosphate silicate powder in the reinforced anti-settling agent can improve the microstructure of the primer in a primer system, so that a coating is more compact and can be conveniently applied to a high-salt and high-humidity environment, and the salt spray resistance of the waterborne epoxy primer is enhanced.

The application provides a low oil absorption amount rust and corrosion preventing powder body and a preparation method thereof, and belongs to the technical field of pigments. Nano silicon dioxide is modified by a calcium salt and a silane coupling agent to obtain silicon dioxide pigment fine powder; calcium ion type silicon dioxide pigment is modified by hyperbranched polysiloxane to obtain modified calcium ion type silicon dioxide pigment; iron tripolyphosphate is modified by tannic acid to obtain modified iron tripolyphosphate, which is uniformly mixed with the silicon dioxide pigment fine powder and the modified calcium ion type silicon dioxide pigment to obtain the low oil absorption amount rust and corrosion preventing powder body. The powder body has good rust and corrosion preventing performance, the wettability, the compatibility and the dispersibility of the pigment in paint are improved, the mechanical properties of the composite pigment are improved, the oil absorption amount is greatly reduced, and the powder body has a good application prospect.

The application provides an intumescent fireproof and anticorrosive coating, which comprises the following components and the mass percentage of each component is as follows: 18-25% of a film forming agent, 22-30% of an acid source, 8-10% of a carbon source, 8-10% of a gas source and 15-25% of an anticorrosive agent, the film forming agent is a mixture of organic silicon modified acrylic resin and water-based epoxy emulsion, the acid source is ammonium polyphosphate or polyphosphate, the carbon source is pentaerythritol or di-pentaerythritol, the gas source is melamine or dicyandiamide, and the anticorrosive agent is a mixture of aluminum tripolyphosphate, zinc phosphate and aluminum silver paste. The application has the functions of fireproofing and anticorrosion at the same time, and the fireproof coating and the anticorrosive coating do not need to be coated respectively, so that the construction process can be reduced, the construction period can be shortened, and the construction cost can be reduced; meanwhile, the effective protection of the base material can reduce the number of maintenance and replacement caused by corrosion or fire damage, and the comprehensive maintenance cost can be reduced in the long run.

This invention discloses a preparation process for a highly flame-retardant and environmentally friendly urea-formaldehyde resin adhesive, comprising the following steps: adding formaldehyde solution to a reaction vessel, adjusting the pH value of the formaldehyde solution using sodium hydroxide, adding urea for the first time, starting a stirrer, heating the reaction, and increasing the reaction temperature, adding urea for the second time, stirring the reaction, and increasing the temperature, adding urea for the third time, stopping the reaction, adding a modified aluminum tripolyphosphate formaldehyde scavenger to the reaction vessel, stirring evenly, cooling to room temperature, and discharging the material to obtain the highly flame-retardant and environmentally friendly urea-formaldehyde resin adhesive. The preparation process of this invention is simple, and the resulting urea-formaldehyde resin adhesive is inexpensive. It not only meets the basic bonding requirements of particleboard but also reduces formaldehyde release and improves flame retardant performance, greatly enhancing the environmental friendliness and safety of particleboard.

The present invention discloses a production process of a thin-walled reducing pipe. After heating, piercing, tube rolling, and sizing treatment of a tube blank, a sized pipe is obtained; then, after quenching, hot expansion, and tempering treatment of the sized pipe, it is cooled to room temperature, and a wear-resistant and corrosion-resistant coating is sprayed on the pipe wall surface, followed by heat preservation treatment to obtain the pipe. The wear-resistant and corrosion-resistant coating comprises the following raw materials in parts by weight: 60-80 parts of an enhanced resin emulsion, 15-20 parts of enhanced particles, 8-10 parts of aluminum tripolyphosphate, 2-3 parts of SN-154 defoamer, 1.5-2 parts of DH-3170 leveling agent, and 1-1.5 parts of sodium dodecylbenzenesulfonate. The enhanced particles are based on graphene and silicon carbide, and the compound use with the enhanced resin further improves the wear resistance of the coating. At the same time, the surface of the enhanced particles is wrapped by a hyperbranched polymer, which can be quickly and evenly dispersed in the coating, and at the same time enhances the corrosion resistance of the reducing pipe and improves the service life of the reducing pipe.

The invention relates to a preparation method of inosine 5 '-triphosphoric acid and inosine 5'-triphosphoric acid. The inosine 5 '-triphosphoric acid comprises the following raw materials: adenosine 5'-triphosphoric acid; the catalytic enzyme is adenosine 5 '-triphosphate deaminase; according to the method, adenosine 5 '-triphosphate is taken as a raw material, adenosine 5'-triphosphate deaminase is purified, and inosine 5 '-triphosphate is synthesized through a one-step catalytic reaction; according to the inosine-5 '-diphosphate prepared by the method disclosed by the invention, the raw materials are easy to purchase and low in price, and the generation of byproducts is reduced.

The invention discloses a titanium-aluminum-lithium phosphate powder, a preparation method thereof and an application of the titanium-aluminum-lithium phosphate powder in a solid-state battery, the gelling characteristic of aluminum triphosphate and the characteristic that tripolyphosphate radicals have relatively strong chelating force on metal ions are utilized, the aluminum triphosphate is used as an aluminum source, a part of phosphorus source and a gel matrix, and a titanium source and a lithium source which are insoluble in water are combined, so that the titanium-aluminum-lithium phosphate powder is prepared. Phosphoric acid is used as a part of a phosphorus source and a solvent, a sol-gel method is adopted to prepare an LATP precursor, the LATP nano-powder with uniform particle size, high purity and low agglomeration is prepared after calcination, and the LATP nano-powder has high ionic conductivity and can be used as a solid electrolyte material of a solid-state battery, a coating of a positive electrode material, a coating of a ceramic diaphragm and a composite solid electrolyte membrane. Meanwhile, compared with a traditional sol-gel method, the preparation method of the lithium aluminum titanium phosphate powder does not need to add a large number of organic reagents, precipitators and the like, and the prepared LATP powder has higher yield and ionic conductivity.

The utility model relates to the technical field of lock nuts, and discloses an anti-corrosion lock nut which comprises a swivel pipe, a second straight pipe, a protective pipe and a movable ring, one end of the swivel pipe is fixedly connected with a first straight pipe, the first straight pipe is in threaded connection with the second straight pipe, and one end, away from the first straight pipe, of the second straight pipe is fixedly connected with a fixed ring. The side face, close to the second straight pipe, of the fixing ring is fixedly connected with a limiting ring, the limiting ring is located on the outer ring side of the second straight pipe, and the protection pipe comprises a chlorosulfonated polyethylene coating layer, a reinforcing layer and an aluminum triphosphate coating layer. When in use, the protective pipe is slidably arranged on the outer surface of the circumference of the straight pipe II, so that the lock nut has corrosion resistance, and the technical problem that in the prior art, the area where water and electricity lines are located is generally high in humidity, the surface of the lock nut is not protected, so that oxidation reaction is prone to occurring, and the lock nut is corroded is solved.

The invention discloses a water-based paint for mirror back metal coating and a preparation method thereof, a corrosion-resistant additive (compounding zinc phosphate and modified aluminum triphosphate) and a corrosion inhibition synergist (compounding benzotriazole and 2-mercaptobenzothiazole) are added on the basis of a water-based resin base material to achieve a synergistic effect; through multiple corrosion inhibition mechanisms of passivation, adsorption and shielding, the corrosion resistance of a metal coating can be remarkably improved, the service life of a mirror back coating film is prolonged, modified filler (through combined treatment of stearic acid and a silane coupling agent) is further added, the dispersity of the modified filler and the compatibility of the modified filler in a system are enhanced, a compact barrier is formed, corrosion medium permeation is blocked, and the service life of the mirror back coating film is prolonged. The corrosion resistance of the coating is further improved, the risk of sedimentation is reduced, the mechanical strength and durability of the coating are enhanced, in addition, through component optimization and interaction, the coating has the advantages of being high in uniformity, free of bubbles, few in surface defect and excellent in adhesive force, and the quality of the coating is guaranteed.

The invention discloses a waterborne two-component polyurethane coating as well as a preparation method and application thereof. The coating comprises a component A and a component B, the component A is prepared from the following raw materials: organic silicon modified hydroxy acrylic dispersion, anti-rust pigment and water; the component B comprises the following raw materials: an organic silicon modified isocyanate curing agent; the organic silicon modified hydroxyl acrylic acid dispersion is obtained by modifying fluorine modified hydroxyl acrylic acid dispersion with an organic silicon compound; the organic silicon compound is prepared from gamma-methacryloyloxy propyl trimethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane, and the organic silicon compound is prepared from gamma-methacryloyloxy propyl trimethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane; the anti-rust pigment comprises a calcium ion exchange type anti-rust pigment, aluminum triphosphate and composite ferrotitanium powder. According to the invention, the organic silicon modified hydroxy acrylic acid dispersoid is combined with the compounded calcium ion exchange type antirust pigment, aluminum triphosphate and composite iron-titanium powder system and the organic silicon modified isocyanate, so that the heat resistance, weather resistance, water resistance and neutral salt mist resistance of the coating can be effectively improved.

The invention relates to a modified aluminum tripolyphosphate antirust agent and application thereof in a coating, and belongs to the technical field of coatings. The antirust agent is prepared from 800 to 900 parts of aluminum triphosphate, 80 to 120 parts of modified branched PEG (Polyethylene Glycol) and 5 to 10 parts of a buffering agent. The modified branched PEG is prepared by reacting trimethylolpropane with paratoluensulfonyl chloride to generate tris (p-toluenesulfonate) methylpropane, then grafting the tris (p-toluenesulfonate) methylpropane with polyethylene glycol azide, and reacting the tris (p-toluenesulfonate) methylpropane with 3-mercaptopropyltrimethoxysilane, the structure of the modified branched PEG has both steric hindrance effect and electrostatic repulsion, and the dispersity is remarkably improved. Specifically, silicon hydroxyl forms steric hindrance through a hydrogen bond, and part of sulfydryl is dissociated into-S-under the condition that the pH is 7.5-8.5, so that the electrostatic repulsion is enhanced. When the coating is applied, sulfydryl and metal ions on the surface of a steel base material form coordinate bonds, particles are guided to migrate directionally, secondary aggregation is avoided, tripolyphosphate ions are promoted to be uniformly released, a continuous and compact passive film is generated, and the initial rust-proof efficiency and long-term protection performance of the coating are remarkably improved.

The application discloses a production and preparation process of a heavy-duty water-based epoxy primer suitable for a high-salt and high-humidity environment, and relates to the technical field of water-based epoxy primer production. The raw materials are as follows: 30-50 parts of bisphenol A type water-based epoxy resin emulsion, 10-20 parts of a curing agent T-31, 3.5-5 parts of a reinforced anti-settling agent, 8-12 parts of zinc phosphate, 5-8 parts of aluminum tripolyphosphate, 10-15 parts of precipitated barium sulfate, 3-6 parts of silicon powder, 0.8-1.2 parts of a polyacrylic acid sodium salt dispersing agent, 0.4-0.8 parts of an organic silicon defoaming agent, 0.3-0.7 parts of an acrylic ester leveling agent and 0.6-1 part of a polyurethane thickening agent. The bentonite in the reinforced anti-settling agent and the modified phosphosilicate zirconium powder can improve the microstructure of the primer system, the coating is more compact, the primer can be conveniently applied to a high-salt and high-humidity environment, and the salt mist resistance of the water-based epoxy primer is enhanced.

The invention discloses a composite binder for metallized pellets of a rotary hearth furnace, which comprises the following components in percentage by mass: 15-40% of organic matter which is formed by compounding 10-30% of high-molecular polymer, 3-10% of starch and 2-8% of modified lignin; 20%-40% of bentonite which is a mixture of calcium bentonite and sodium bentonite in proportion; the slag blender is formed by compounding at least two of 10%-30% of sodium silicate, 5%-20% of sodium sulfate, 5%-15% of magnesium sulfate, 3%-10% of sodium hydroxide and 3%-10% of sodium bicarbonate; 0.5%-5% of a surfactant which is a mixture of at least two of 0.3%-3% of lignin sodium carbonate, 0.2%-2% of lignin calcium carbonate, 0.1%-1% of sodium humate, 0.1%-1% of tripolyphosphate and 0.1%-1% of sodium borate; the high molecular material, the bentonite and the slag blender are polymerized to form the high molecular material bentonite slag blender. The pressure of concentrated release of steam in the roasting process is reduced, the phenomena of burst and pulverization of pellets are reduced, the pelletizing rate and the yield of fine powder such as zinc are increased, and the production requirements of the metallurgical industry are met.

The invention relates to the technical field of power cables, in particular to a long-service-life fire-resistant cross-linked polyethylene insulated power cable and a preparation method thereof. The composite material comprises tripolyphosphate, hexafluorocyclotriphosphazene, an antioxidant, a silane coupling agent, a peroxide cross-linking agent and low-density polyethylene resin. According to the invention, a phosphorus-nitrogen-fluorine composite gas-solid synergistic flame-retardant system and a long-acting thermal oxidation stabilization technology are adopted, and an interface enhanced cross-linked network and a multi-layer co-extrusion dynamic cross-linking technology are combined, so that the cable insulator is ensured to have excellent long-term thermal stability and line integrity in an extreme fire scene; and the industrial common technical problems of short thermo-oxidative aging life, insufficient fire resistance, early failure caused by interface defects and microscopic unevenness and the like of the traditional cross-linked polyethylene insulated cable are thoroughly solved.

The invention relates to the field of epoxy anti-corrosion primer, and discloses waterborne epoxy anti-corrosion primer and a preparation method thereof, and the waterborne epoxy anti-corrosion primer is composed of a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 5-25 parts of water, 1-3 parts of a dispersing agent, 30-40 parts of pigment and filler, 1-8 parts of an anti-rust pigment, 0.1-1 part of a defoaming agent, 0.1-1 part of a pigment and filler wetting agent, 0.5-2 parts of water-based organic bentonite, 30-40 parts of a water-based epoxy emulsion, 0.5-1 part of a base material wetting agent, 0.2-1 part of a cosolvent, 0.5-2 parts of an anti-flash rust agent and 0-0.5 part of a silane coupling agent; the component B is prepared from the following raw materials in parts by weight: 10-40 parts of a water-based polyamide epoxy curing agent, 0-2 parts of nano silicon dioxide aerogel and 60-90 parts of water; the mass ratio of the component A to the component B is (6-12): 1, the salt fog resistance time of the prepared waterborne epoxy anticorrosive primer is higher than that of a contrast, the crosslinking density of the two components is higher, the initial protection is improved by the flash rust inhibitor, and the corrosion inhibition effect of single aluminum triphosphate is better due to the compounding of zinc phosphate and aluminum triphosphate.

The invention discloses a preparation method of a layered aluminum triphosphate antirust pigment, and belongs to the technical field of design and synthesis of inorganic materials. The method comprises the following steps: S1, mixing an aluminum source compound and a phosphorus source compound in water at room temperature to form turbid liquid; s2, adding one or more structure-directing agents into the turbid liquid, and adjusting the pH value of the mixed liquid to 3.0-5.0; s3, putting the mixed solution into a high-pressure reaction kettle, and carrying out hydrothermal crystallization reaction for 7-13 hours at the pressure of 1-3 MPa and the temperature of 190-230 DEG C; and S4, filtering, washing and drying the reaction product to obtain the aluminum triphosphate anti-rust pigment with the layered structure. The method is simple in process, the product morphology is regular, and the layered pigment effectively improves the compactness and flatness of a coating in the anti-corrosion application process, has a synergistic effect with a chemical anti-rust effect, remarkably improves the protective performance of the coating and has a wide application prospect.

The application discloses a kind of phosphorus-containing intrinsic flame-retardant epoxy resin and its preparation method and application, and flame-retardant epoxy resin includes epoxy phosphate, or epoxy pyrophosphate, or epoxy triphosphate, and its corresponding solidification product.The application is reacted with epoxy resin respectively using phosphoric acid, pyrophosphoric acid, triphosphoric acid, and phosphoric acid, pyrophosphoric acid, triphosphoric acid is introduced into the molecular structure of epoxy resin, and three kinds of phosphorus-containing epoxy resin, epoxy phosphate (EP-PI), epoxy pyrophosphate (EP-PPI) and epoxy triphosphate (EP-PPA) are prepared, and the reaction condition is mild and can realize higher phosphorus content, greater range of phosphorus content control.When the molar ratio of epoxy resin and phosphoric acid (pyrophosphoric acid, polyphosphoric acid) is only 20:1, the obtained solidification product can show good flame-retardant, smoke suppression performance.

The invention relates to the technical field of coatings, in particular to an antibacterial coating for vehicles and a preparation method of the antibacterial coating. The antibacterial coating for the vehicle comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (0.5-0.8); the component A is prepared from the following raw materials in parts by weight: 50 to 65 parts of waterborne epoxy emulsion, 8 to 15 parts of a composite antibacterial agent, 4 to 8 parts of a flash rust inhibitor, 2 to 4 parts of nano zinc oxide, 5 to 10 parts of talcum powder, 4 to 6 parts of aluminum triphosphate, 0.3 to 0.8 part of wax powder, 1 to 1.5 parts of propylene glycol alginate, 0.4 to 0.8 part of a dispersing agent, 0.3 to 0.5 part of a defoaming agent, 1 to 2 parts of propylene glycol butyl ether, 0.8 to 1.5 parts of a flatting agent and 30 to 40 parts of water; the component B is prepared from the following raw materials in parts by weight: 25 to 35 parts of an epoxy curing agent, 0.5 to 0.8 part of a flash rust inhibitor, 2 to 3 parts of a silane coupling agent, 2 to 5 parts of cyclohexane-1, 2-dicarboxylic acid diisononyl ester and 10 to 20 parts of water; the prepared antibacterial coating for the vehicle not only has excellent antibacterial performance, but also has excellent mechanical performance and corrosion resistance, the service life of the coating is effectively prolonged, and meanwhile the quality of the coating is guaranteed.

The application relates to a high-performance concrete admixture composition for a wind power tower drum and a preparation method thereof, relates to the field of concrete admixtures, and comprises the following components in parts by weight: 35-45 parts of a shrinkage-reducing polycarboxylate water reducing agent, 8-12 parts of methoxy polyethylene glycol acrylate modified nano silicon dioxide, 1.5-2.5 parts of sodium dodecyl polyoxyethylene ether sulfonate, 0.8-1.5 parts of coconut diethanolamide, 0.3-0.8 parts of sodium polyacrylate, 0.2-0.6 parts of ammonium tripolyphosphate, 0.05-0.15 parts of a polyether defoaming agent and 40-50 parts of water. The application realizes systematic improvement of the microstructure of concrete, significantly improves the strength and durability of the concrete by synergistically regulating the hydration process of the concrete, optimizing the pore structure in the concrete and strengthening the interface transition zone through the synergistic effect among the various admixtures.

A method for preventing corrosion of a metal member in which cooling water and steam are alternately brought into contact with each other, said method being characterized in that a phosphorus compound and / or a zinc compound are added to the cooling water, and an anti-corrosion film-forming substance is added to the steam. The phosphorus compound is at least one of hexametaphosphoric acid, triphosphoric acid, orthophosphoric acid, phosphono butane tricarboxylic acid, HEDP (1-hydroxyethylidene-1, 1-diphosphonic acid) and amino trimethylphosphonic acid.

The invention provides a novel efficient pressing agent, and belongs to the technical field of pressing agents. The novel high-efficiency foaming agent is prepared from the following components in parts by mass: 2 to 10 parts of ammonium tripolyphosphate, 4 to 15 parts of aldehyde modified polyvinyl alcohol, 1 to 5 parts of silane-based polyether modifier, 0.5 to 3 parts of amino acid-quaternary ammonium salt composite foaming agent, 100 parts of distilled water and 0.01 to 0.5 part of optional additive. According to the invention, ammonium tripolyphosphate and aldehyde modified polyvinyl alcohol cooperate to construct a reversible cross-linked network, dual functions of stable film formation and intelligent stripping under different weather conditions are realized, and the network film body can automatically form a film layer with uniform elasticity in a drying process, has good adhesiveness and integrity, and can be applied to the field of film preparation. And after being used, the adhesive can be naturally stripped within a set time or under a specific pH condition, so that the field operation process is greatly simplified.

The invention provides an organic phosphonic acid coating and a preparation method thereof. The coating is prepared from the following raw materials in percentage by weight: 30 to 38 percent of vinyl chloride-vinylidene chloride-acrylic emulsion, 3 to 5 percent of tannic acid, 5 to 10 percent of aluminum triphosphate, 0.5 to 3.5 percent of butyl cellosolve, 8 to 15 percent of titanium dioxide, 5 to 10 percent of silica powder, 0.3 to 0.8 percent of wetting agent, 0.5 to 2.0 percent of dispersing agent, 0.2 to 0.6 percent of defoaming agent, 2 to 5 percent of emulsion stabilizer, 0.1 to 0.4 percent of thickening agent, 0.5 to 5 percent of etidronic acid and the balance of water. Aluminum tripolyphosphate in the organic phosphonic acid coating can form a chelate with various metal ions in the pipeline, a passive film is formed on the inner wall of the pipeline, and corrosion is effectively inhibited; tannic acid can react with a corrosion product to form a complex, and the complex covers a corrosion point to isolate oxygen and moisture and prevent the corrosion point from being further corroded; the hydroxyethylidene-1, 1-diphosphonic acid can form a complex with metal ions and form a layer of protective film on the metal ions, so that the adhesive force of the coating can be improved, the coating can be more firmly attached to the inner wall of a pipeline, and the durability of the coating is improved.

The application provides an organic phosphonic acid coating and a preparation method thereof, and comprises the following raw materials according to weight percentage: vinyl chloride-vinylidene chloride-acrylic acid emulsion 30-38%, tannic acid 3-5%, aluminum tripolyphosphate 5-10%, ethylene glycol butyl ether 0.5-3.5%, titanium white powder 8-15%, silica powder 5-10%, wetting agent 0.3-0.8%, dispersant 0.5-2.0%, defoaming agent 0.2-0.6%, emulsion stabilizer 2-5%, thickening agent 0.1-0.4%, hydroxyethylidene diphosphonic acid 0.5-5%, and the rest is water. The aluminum tripolyphosphate in the organic phosphonic acid coating can form a chelate with various metal ions in the pipeline, form a passivation film on the inner wall of the pipeline, and effectively inhibit corrosion; the tannic acid can react with corrosion products to form a complex, the complex covers the corrosion sites to isolate oxygen and moisture, and prevents the corrosion sites from further corrosion; the hydroxyethylidene diphosphonic acid can form a complex with metal ions and form a protective film on the metal ions, can improve the adhesion of the coating, make the coating more firmly adhere to the inner wall of the pipeline, and improve the durability of the coating.

The invention provides low-oil-absorption anti-rust and anti-corrosion powder and a preparation method thereof, and belongs to the technical field of pigments. The preparation method comprises the following steps: modifying nano silicon dioxide with calcium salt and a silane coupling agent to prepare silicon dioxide pigment fine powder; the preparation method comprises the following steps: modifying a calcium ion type silicon dioxide pigment with hyperbranched polysiloxane to obtain a modified calcium ion type silicon dioxide pigment; iron tripolyphosphate is modified by tannic acid to prepare modified iron tripolyphosphate, and the modified iron tripolyphosphate is uniformly mixed with silicon dioxide pigment fine powder and modified calcium ion type silicon dioxide pigment to prepare the low-oil-absorption anti-rust and anti-corrosion powder which has good anti-rust and anti-corrosion performance, the wettability, compatibility and dispersity of the pigment in the coating are improved, and the anti-rust and anti-corrosion performance of the coating is improved. The mechanical property of the composite pigment is improved, the oil absorption amount is greatly reduced, and the composite pigment has a relatively good application prospect.