10302results about How to "Improve anti-corrosion performance" patented technology

A process for preparing alkylhydroxybenzoate detergent-dispersant additives having low sulfur content and high TBN is described. The alkali metal alkylhydroxylbenzoate, alkaline earth metal alkylhydroxybenzoate and overbased alkaline earth metal alkylhydroxybenzoate reaction products described have a sulfur content in the range of from about 0.1 to 1.2 wt % are effective anti-corrosive detergent-dispersant additives in lubricating oil compositions.

The invention relates to an environment-friendly light heat-insulating material for fireproof doors and buildings, and a manufacturing method thereof. The manufacturing method is characterized by comprising the following steps of: pretreating plant hollow core bodies and / or flexible porous fillers by using a water glass adhesive; mixing with inorganic fire-resistant hollow particles; and performing mould pressing, shaping and drying to obtain the environment-friendly light heat-insulating material. The hollow core bodies and the flexible porous fillers are arranged multidirectionally; one layer of water glass adhesive is arranged at least on the surfaces of the hollow core bodies and the flexible porous fillers; and discontinuous holes are reserved between the hollow core bodies and / or the flexible porous fillers and the inorganic fire-resistant hollow particles. Preferably, the hollow core bodies are rice husks and straw sections; and the flexible porous fillers are foam and fibers. Renewable plant resources and recovered foam and fiber waste are adopted, so the environment-friendly light heat-insulating material is energy-saving and environment-friendly; and a large number of sealed holes are formed among the material particles through the penetration and coating of the modified water glass adhesive, and a heat-insulating hydrophobic corrosion-resistant multi-effect protective layer is provided, so the environment-friendly light heat-insulating material has good fireproof, heat-insulating and heat-preserving effects, high weather resistance, combined rigidity and toughness, low density and low cost.

The invention relates to a insulating coating whose constituents include film forming substance 15-65 weight parts, nano porous SiO2 3-20 weight parts, nano iron oxide yellow 1-12 weight parts, dyestuff 5-30 weight parts, gasket material 3-22 weight parts, auxiliary agent 0.4-8 weight parts, and dissolvent 6-30 weight parts.

The invention relates to a high temperature resistant anticorrosion coating based on graphene and a preparation method thereof. The high temperature anticorrosion coating comprises the following components by the mass percentage: 5-60% of epoxy resin, 3-30% of polyphenylene sulfide resin, 3-30% of amino resin, 1-10% of a pigment, 1-20% of graphene, 3-50% of n-butyl alcohol, 0.1-0.3% of a defoaming agent, 0.1-10% of polyhydroxy acid sodium salt, 0.1-5% of benzenedicarboxylic acid dibutyl ester, 0.5-1.0% of bentonite, and 0.2-0.5% of a leveling agent. Compared with the prior art, the prepared coating has the advantages of quite excellent waterproof and anticorrosion performance, high temperature resistance, weather resistance, alkali resistance, impact resistance, artificial aging resistance and the like, and the preparation method has the advantages of good controllability, simple operation, low production cost, and easy industrialized production.

A bottle unit (30) of a liquid atomizing apparatus is provided with: a bottle section (31) reserving a chemical liquid (L); a horn oscillating member (40) to whose a distal end the liquid (L) in the bottle section (31) is fed; and a mesh member (1) having a number of fine pores (2), and mounted to an end surface of the distal end (41) of the horn oscillating member (40) in contact therewith. The bottle section (31) is constituted of a large capacity section (B) and a small capacity section (b) in communication with the large capacity section (B) through an opening (32), and opposing to the distal end (41) of the horn oscillating member (40). The small capacity section (b) is formed such that the liquid (L′) therein is in contact with a point in the proximity of the contact section between the distal end (41) of the horn oscillating member (40) and the mesh member (1). With such a construction adopted, there can be provided a liquid atomizing apparatus that is obtained at a low cost with not only increased reliability but enhanced durability, and whose operations such as maintenance can be performed with simplicity and convenience without a necessity for a special liquid feed means.

This invention relates to a aquosity industry anti-rust paint and its preparation method. According to weight it includes 8 to 11% aquosity acroleic acid modified epoxy, 33 to 40% acroleic acid latices, 0.1 to 0.3% defoamer, 0.05 to 0.15% wetting agent, 0.3 to 0.5% dispersant, 0.3 to 0.5% rust-resistant agent, 7.5 to 9% iron oxide red, 6 to 8% French chalk, 5 to 10% modified zinc phosphate, 2.5 to 10% trimerization aluminum phosphate, 3 to 3.5% precipitated baryte , 0.5 to 1% zinc oxide, 3 to 5% mica ferric oxide, alcohol ester twelve 1 to 2%, triethanolamine 1 to 2%, thickening agent 0.3 to 0.6%, preservative 0.05 to 0.1%, 5 to 20% de-ionized water, through pretreatment, color paste preparation and blending and adjusting to gain product.

The invention relates to a nanometer antiseptic paint and provides a nanometer composite oxide antiseptic paint for various metal substrates. After the paint is used for treated metal, the coating can be solidified at the normal temperature and has excellent antiseptic property. The composite oxide comprises nanometer silicon dioxide sol and nanometer titanium dioxide sol. After the coating is dried, nanometer particles of the composite oxide subject to the modification of fluorocarbon-type silane coupling agent and other types of organic silane coupling agent undergo self-assembly to form a dense coating with a thickness of 1-5 microns.

The invention provides an epoxy resin-oxidized graphene composite coating. The composite coating is prepared by using oxidized graphene as a packing and adding the packing to epoxy resin coating. A coating layer prepared on the surface of a matrix by utilizing the composite coating is excellent in binding force of the matrix, and further greatly improved in corrosion resistance, so as to effectively obstruct a corrosive medium from penetrating from the surface of the coating layer to the path of the matrix. Therefore, the epoxy resin-oxidized graphene composite coating is good in application prospect, and in particular suitable for the matrix in a highly-corrosive severe environment.

Disclosed herein is a heat transfer fluid comprises: a freezing point-depressant; an aliphatic carboxylic acid, a salt thereof, or a combination of the foregoing; an inorganic phosphate; a magnesium compound; deionized water; and a component selected from the group consisting of azole compounds, copper alloy corrosion inhibitors, phosphonocarboxylates, phosphinocarboxylates, and combinations of two or more of the foregoing components. Also described is a heat transfer system comprising the heat transfer fluid.

The invention discloses a method for preparing a hydroxy acrylic resin aqueous dispersion and the hydroxy acrylic resin aqueous dispersion prepared by the same and water-based coating using the hydroxy acrylic resin aqueous dispersion as a film forming matter. The hydroxy acrylic resin aqueous dispersion is prepared by a step free radical solution polymerization process and obtains a nucleus-shell structure by using an initiator of a specific type and a chain transfer agent and by a high-temperature polymerization reaction. The nucleus has weak hydrophilicity and no carboxyl, and the shell has a strong hydrophilicity and is rich in carboxyl, so stable storage can be realized. The obtained hydroxy acrylic resin aqueous dispersion has the characteristics of low solution content, high solid content and low viscosity. The coating prepared from the hydroxy acrylic resin aqueous dispersion and a water-based amino resin or a water-based polyurethane cross-linking agent has the characteristics of high brightness, good water resistance and excellent weather resistance. The hydroxy acrylic resin aqueous dispersion can be used for preparing an excellent base material of high-performance environment-friendly industrial protective coatings and widely applied to topcoats and primer-topcoat coatings in various fields.

A high-solids anticorrosive coating composition which comprises a main ingredient (A) comprising an epoxy resin (a1) and a hardener ingredient (B) comprising an alicyclic amine hardener (b1) and / or a Mannich type hardener (b2), the ingredient (A) and / or the ingredient (B) containing at least either of an additive (a2) selected among epoxidized reactive diluents and modified epoxy resins and a coating film modifier (ab) selected among petroleum resins, xylene resins, coumarone resins, terpene phenol resins and vinyl chloride copolymers. The high-solids anticorrosive coating composition especially of the rapidly curable type is characterized by containing a high-boiling organic solvent having a boiling point exceeding 150° C. and containing substantially no organic solvent having a boiling point of 150° C. or lower.

The invention discloses composite epoxy anticorrosive paint and a preparation method thereof. The composite epoxy anticorrosive paint is composited by a component A and a component B at a ratio of 2:1, wherein the component A comprises constituents as follows: organosilicon modified epoxy resin, a pigment, filler, a plasticizer, a dispersant, a coalescing agent and a antifoaming agent; the component B comprises constituents as follows: polyphenyl ether resin powder, styrene-butadiene rubber, toluene, a plasticizer, a coupling agent, auxiliary materials and a flame retardant; and the components A and B are mixed respectively for preparation, and B is sprayed on A to form the composite epoxy anticorrosive paint. The composite epoxy anticorrosive paint is prepared by two components, has superior high-temperature resistance and abrasion resistance as well as good adhesion and low shrinkage simultaneously, has good corrosion resistance and penetration resistance to water, medium acid, alkali and other solvents and further has superior flexibility and paint application simultaneously; and the preparation method of the composite epoxy anticorrosive paint is simple and low in cost.

The invention relates to the field of chemical coating, in particular to epoxy powder coating applied to material conveying steel belts in oilfield oil pumping pipelines or coal transportation in the oil industry. In a formula, the coating comprises the following components in percentage by weight: 32-56% of epoxy resin, 8-14% of curing agent, 30-50% of pigments and fillers, 2-10% of resin modifier and 2-6% of assistant, wherein the epoxy resin in the formula is bisphenol A type epoxy resin, a mixture of the bisphenol A type epoxy resin and phenolic aldehyde modified epoxy resin, and phenolic aldehyde modified epoxy resin, and the curing agent is phenolic hydroxyl resin. The epoxy powder coating disclosed by the invention belongs to fast-set anticorrosion and wear-resistant epoxy powder coating, has the granularity being 10-125 mu m, is applied under general curing conditions that the curing temperature is 180-200 DEG C and the curing time is 3-10min, can be regulated according to user needs and is superior to like products in anticorrosion performance, coating film mechanical performance and wear resistance, a preparation process is simple, the labour productivity can be obviously increased, and the epoxy powder coating is suitable for industrialized production.

The metal separator for a fuel cell of the present invention includes a metal substrate having reactant flow pathways and an electro-conductive anti-corrosion coating layer. The electro-conductive anti-corrosion coating layer covers the surface of the metal substrate on which the reactant flow pathways are formed. The coating layer may include metal carbides, metal oxides, and metal borides. A metal layer for improving adherence is formed between the surface of the metal substrate on which the reactant flow pathways are formed, and the electro-conductive anti-corrosion coating layer.

The invention discloses a waterborne epoxy zinc-rich paint modified by a nanometer conductive carbon material and a preparation method thereof. The paint is composed of a component A and a component B, wherein the component A comprises waterborne epoxy emulsion, the nanometer conductive carbon material, zinc powder, a waterborne antifoaming agent, a waterborne wetting dispersant and the like, and the component B is modified amine curing agent emulsion. The preparation method comprises: (1) preparing a waterborne slurry of the nanometer conductive carbon material; (2) adding water, waterborne epoxy emulsion, waterborne anti-forming agent and waterborne wetting dispersant into a stirred tank, stirring with a low speed to disperse uniformly, successively adding zinc powder, an anti-settling agent, the nanometer conductive carbon material slurry and the like, dispersing with a high speed to obtain the component A of the waterborne epoxy zinc-rich paint modified by the nanometer conductive carbon material; and (3) adding the component B into the component A, stirring uniformly and sieving. By employing the waterborne epoxy zinc-rich paint of the invention, the obtained epoxy anticorrosion coating modified by the nanometer conductive carbon material has excellent corrosion resistance and impact resistance.

A chemical supply system comprises, as principal elements, a chemical storage tank in which a liquid chemical for cleaning is stored in the state of its formulated concentrate, a chemical supply apparatus connected to the chemical storage tank for positively performing chemical supply, a piping system connected to the chemical supply apparatus to form a supply flow passage that is a passage for ultrapure water which the liquid chemical is to be mixed with, a pair of discharge nozzles disposed at end portions of the piping system so as to oppose surfaces of a wafer set in a cleaning chamber to supply a cleaning liquid onto the surfaces. Thereby, remarkable miniaturization / simplification of a cleaning liquid supply system including chemical tanks is intended, it is made possible easily and rapidly to compound and supply a cleaning liquid at an accurate chemical concentration, and particles or the like being generated and mixing in a cleaning liquid, are suppressed to the extremity.

The invention discloses a high-temperature-resistant, anti-corrosion and thermal-insulation coating which comprises components in parts by weight as follows: 45-60 parts of film-forming resin, 20-30 parts of a pigment and filler, 15-30 parts of an aid and 25-30 parts of a solvent. The invention further designs a preparation technology of the high-temperature-resistant, anti-corrosion and thermal-insulation coating. The technology comprises steps as follows: firstly, mixing the film-forming resin with the pigment and the filler, sequentially adding an antifoaming agent, a leveling agent, a coupling agent, a crosslinking agent and a curing agent, and evenly stirring the mixture at the normal temperature to obtain the high-temperature-resistant, anti-corrosion and thermal-insulation coating. The coating has the advantages of environment-friendliness, low cost, high hardness, long service life, good heat resistance, good flexibility, good high-temperature resistance and the like.

The invention provides a metal surface treatment agent composed of aqueous solution or aqueous emulsion containing ionic liquid. The metal surface treatment agent comprises the ionic liquid, silicate or silane coupling agent, water-soluble chitin or chitosan, corrosion inhibitor, stabilizer, pH modifier, wetter, coalescing agent, antioxidant, ethanol and water, the ionic liquid is room-temperature ionic liquid consisting of nitrogenous heterocyclic compound cations and inorganic or organic anions, one or more of nanoscale titanium dioxide, zirconium oxide or zirconium fluoride is uniformly mixed into the silicate or silane coupling agent by the weight equivalently accounting for 3%-25% of that of the silicate or silane coupling agent. A chemical conversion coating is formed on a metal surface by the metal surface treatment agent, can inhibit corrosion of the metal surface, and has a fine coating performance. The metal surface treatment agent is used for treating cold-rolled plates, galvanized plates and aluminum plates, and the metal surface treated by the metal surface treatment agent has the coating adhesion force equivalent to that of a metal surface treated by a phosphorus-containing metal surface treatment agent.

The present invention discloses a hot-pressing carbonization strengthening method of timbers, which includes drying, planing, hot-pressing carbonization, cooling and other steps. The present invention applies a hot press as a timber-carbonizing device, and the timbers under the state of compression are processed by hot-pressing carbonization. The present invention is characterized in that the investment on carbonization devices is less, the carbonization process is simple, the production is safe, the production efficiency is high, the consumption of heat energy is little, and the production cost is low; moreover, the thickness of the carbonized timbers is not limited, the defects of the timbers, such as deformation, cracking, stiker stain, color difference, knot fall-off, etc., do not occur in the process of production, so the quality of products is high; not only is the size stability and noncorrodibility of the carbonized timbers improved, but also the density and mechanical property of the timbers is increased.

The invention relates to a cold-rolled sheet rolling emulsified oil containing a modified nano copper and preparation method thereof, which belong to the field of organic chemistry. The emulsified oil comprises the following components, in percentage by weight: 54-80% of a base oil, 15-32% of an oiliness agent, 0.1-1% of a modified nano copper particle, 2-4% of an extreme pressure agent, 0.5-2% of an anti-rusting agent, 2-6% of an emulsifier, 0.4-1% of an anti-oxidant, 0.03-0.1% of an anti-foaming agent, and 0.2-0.6% of an anti-mildew agent. The cold-rolled sheet rolling emulsified oil containing the modified nano copper is diluted with water into a 2-6 wt% emulsion, and the emulsion is directly used in the cold rolling process of the strip steel and has very good lubrication, cleaning property of the rolling mill and annealing cleaning property, after annealing, the steel plate not subjected to degreasing has a clean surface without pollutants, so as to satisfy rolling production requirement under high pressure at high speed.

The invention relates to an aqueous nano porous corrosion-resistant heat-insulated coating material and a preparation method for the corrosion-resistant heat-insulated coating material and particularly relates to an aqueous corrosion-resistant heat-insulated coating material, which has a nano porous structure, prepared through forming an aqueous-phase uniform three-dimensional-network nano porous structure by taking thixotropic colloid as a template agent and adding a film forming agent, a reinforcing powder material, a functional powder material and admixtures. The preparation method for the corrosion-resistant heat-insulated coating material, disclosed by the invention, is simple and easy in operation and low in production cost, is environment-friendly and safe and is beneficial to mass production. The nano porous corrosion-resistant heat-insulated coating material disclosed by the invention has excellent heat insulating and corrosion resisting properties and can be applied to the heat insulating and corrosion resisting of equipment such as high-temperature furnace hearths, pipelines and valves in the fields of aerospace and military industries, metallurgical forging, petroleum refining, electric power and the like, so that the safety of use and the level of energy saving and consumption lowering are improved.

The present invention provides one kind of water thinned industrial paint based on water dispersed organosilicon epoxy acrylate. The water thinned industrial paint is prepared with water dispersed organosilicon epoxy acrylate, inert antirust pigment, active antirust pigment, nanometer material modified antirust pigment, stuffing, dispersant, wetting agent, thickener, drying agent, mildew inhibitor, preservative, defoaming agent, deionized water and other materials. The water thinned industrial paint with water dispersed organosilicon epoxy acrylate as base material can form coating with the features of high mechanical strength and high anticorrosive performance similar to that of epoxy resin as well as the features of high weather resistance and good decoration performance like acrylate resin. The water thinned industrial paint has convenient use and wide application range.

The invention provides a corrosion-inhibiting anionic intercalated hydrotalcite / nano oxide composite material, a preparation method thereof and application of the corrosion-inhibiting anionic intercalated hydrotalcite / nano oxide composite material. The preparation method is as follows: corrosion-inhibiting anions are directly inserted between hydrotalcite layers by the one-step coprecipitation method and the roasting restoring method; the nano oxide is generated by means of in situ synchronization during the process of generation of hydrotalcite crystals by controlling the mixture ratio of divalent metal ions to trivalent metal ions, the pH value of a reaction solution and the reaction temperature; and the corrosion-inhibiting anionic intercalated hydrotalcite / nano oxide composite material with the anti-corrosive function is prepared. The invention is mainly characterized in that the in situ preparation method for the hydrotalcite / oxide composite material provided with a nano lamellar structure improves the release amount of a corrosion inhibitor and reduces the water absorption of a coating by leading into the corrosion inhibitor with the anti-corrosive function and the nano oxide which is generated in situ during the reaction process. The composite material can be used to be pigment of an anti-corrosive metallic coating system, and particularly has potential application value in improving the anti-corrosive performance of a magnesium alloy anti-corrosive coating.

The invention discloses a marine anticorrosive coating. The marine anticorrosive coating consists of the following components in percentage by mass: 30-40 percent of film forming matter, 21.5-33.8 percent of pigment filler, 6.2-15.4 percent of aids and 30-42.3 percent of solvent, wherein the film forming matter consists of 16-23 mass percent of water-based phenolic epoxy resin and 14-16 mass percent of waterborne polyurethane; the pigment filler comprises graphene; the solvent is deionized water. The marine anticorrosive coating has high corrosion resistance, high flexibility, high wear resistance, high oil and aging resistance and good antirust performance. The film forming matter integrates high adhesion force, high strength, low shrinkage rate and high corrosion resistance of the water-based phenolic epoxy resin as well as high flexibility, wear resistance, oil and aging resistance and good film-forming performance of the waterborne polyurethane.

The invention relates to a fluorocarbon nanometer solar heat-insulation reflective paint, a preparation method thereof and a using method thereof. The paint can be used for roofs and glass curtain walls of the building industry, offshore drilling platforms, oil tanks and petroleum pipelines of the petroleum industry, the surfaces of cars and trains of the transportation industry, hulls and decks of the ship-building industry, and the tanks and warships of the weapon and aerospace industry. The fluorocarbon nanometer solar heat-insulation reflective paint comprises a component A and a component B, wherein the component A comprises the following materials in percentage by weight: 40%-70% of fluorocarbon resin, 1%-10% of nanometer TiO2 concentrated slurry, 10%-30% of infrared-ray reflective pigment, 3%-10% of hollow micro beads, 1%-5% of auxiliaries and 10%-20% of organic solvent; and the component B is cross-linking agent. The preparation method for the fluorocarbon nanometer solar heat-insulation reflective paint comprises the following steps: 1) preparing, dispersing and grinding the materials of the component A in proportion until the fineness is lower than 30 microns; and 2) mixing and curing the component A and the component B to prepare the fluorocarbon nanometer solar heat-insulation reflective paint. The fluorocarbon nanometer solar heat-insulation reflective paint provided by the invention is suitable for normal-temperature drying or low-temperature baking and drying; moreover, a coating film formed by the paint has the characteristics such as high reflectivity, a good heat-insulation effect, high corrosion prevention, high weather resistance, high self-cleanness, low friction and the like.

The invention relates to the technical field of novel coating preparation and in particular relates to an aqueous coating with high heat-dissipation performance which comprises the following components: 30-60 parts of aqueous resin, 1-10 parts of graphene, 10-30 parts of packing, 10-20 parts of an aid and 30-60 parts of a solvent, wherein the radial size of the graphene is 1-100 microns; and the graphene consists of 1-3 layers. The high heat-dissipation performance aqueous coating provided by the invention is good in heat dissipation effect, environmentally friendly and low in cost.

The invention relates to a water-based epoxy intermediate coating, consisting of two components of A and B, wherein component A is produced by grinding, dispersing and other process after the base material of water-based epoxy curing agent is mixed with pigment, filler, additives, co-solvents and water and component B is produced by stirring, filtering and other processes after the base material of water-based epoxy emulsion is mixed with water. The water-based epoxy intermediate coating has no pollution to the environment and is harmless to the workers, secure and convenient in application. Suitable for high-pressure airless spraying, the water-based epoxy intermediate coating is provided with high operation efficiency and 40-200um thickness of a single coating layer. The coating has advantages of fast drying, high mechanical strength and good anticorrosion performance. The water-based coating can be used as intermediate coating for container, as well as inner top finish. Additionally the coating is widely used in the antirust for the iron and steel parts of transportation means like automobiles, trains and ships; of structures like bridges, towers, doors and windows; and of facilities like tanks and pipes.

The invention belongs to the technical field of surface corrosion prevention and discloses a water-based high-corrosion-resistance coating with excellent stamping performance and a preparing method and application of the water-based high-corrosion-resistance coating. The coating comprises, by mass, 25-60 parts of water-based resin, 2-8 parts of water-based cross-linking agent, 0.1-0.5 part of catalyst, 4-10 parts of cosolvent, 0.1-1 part of flatting agent, 0.1-10 parts of lubricating agent, 2-10 parts of water-based toughening resin, 0.1-0.5 part of defoaming agent, 0.5-3 parts of thickening agent and the balance water, and the total mass parts of the components are 100 parts. According to the water-based high-corrosion-resistance coating, the water-base resin serves as film forming matter, so that good construction performance is achieved, curing is quick, super corrosion resistance can be obtained when the thickness of the coating is 2-5 micrometers, the performance of resisting neutral salt mist is longer than 2,000 hours, resistance to acid salt mist is longer than 500 h, the corrosion grade can reach 9.8 or higher, and the salt mist resisting performance of the coating is maintained unchanged after stamping or bending is carried out.

The invention discloses a single-component self-phosphatizing antirust acrylic emulsion, and a preparation method and application thereof. Self-made epoxy monoacrylate and acrylic phosphate used as monomers are subjected to radical copolymerization with acrylic acid monomer; and a seed emulsion semicontinuous method is utilized to obtain the emulsion. The emulsion used as a film forming material is matched with related pigment, filler and assistants to obtain water-based paint. When being used on the automobile leaf spring surface, the water-based paint can be cured at 80 DEG C within 20 minutes to form a film, of which the adhesive force is Grade 0, the hardness is 3H and the salt-fog resistance is 1000 hours. The method solves the problems of poor water resistance, salt-fog resistance, weather resistance and storage stability of the coated film of the existing antirust emulsion; and the method also solves the problems of incapability of recycling ground waste, and poor antirust capacity of unit coating thickness in the existing automobile leaf spring application process, and omits the procedure of phosphatizing on the substrate surface before application due to the introduction of the phosphate monomer.

The invention discloses a novel environment-friendly coating with superhigh marine environment corrosion resistance and a preparation method and application thereof. The environment-friendly coating with superhigh marine corrosion resistance consists of the following components in part by weight: a main agent comprising 22 to 35 parts of low-viscosity solvent-free epoxy resin, 9 to 15 parts of activated thinner, 0.2 to 5 parts of aid, 5 to 8 parts of organic solvent, 0.5 to 15 parts of toner, 10 to 25 parts of first filler, 20 to 45 parts of second filler and 0.5 to 5 parts of thixotropic agent, and a curing agent comprising 60 to 90 parts of amine resin, 10 to 30 parts of activated thinner, 2 to 8 parts of aid and 2 to 10 parts of organic solvent. During use, the main agent and the curing agent are uniformly mixed, and the mixture is applied to the surface of a substrate. A film formed by the coating is high in corrosion resistance and low in content of volatile organic compounds (VOC), does not contain any toxic or harmful substance, can be universally used in a drinking water tank, and also can be used for a ship ballast tank, a ship bottom, a deck and each position of a marine platform.