CN109370297B - Practical multifunctional efficient environment-friendly water-based paint remover as well as preparation method and application thereof - Google Patents
Practical multifunctional efficient environment-friendly water-based paint remover as well as preparation method and application thereof Download PDFInfo
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- CN109370297B CN109370297B CN201811086797.6A CN201811086797A CN109370297B CN 109370297 B CN109370297 B CN 109370297B CN 201811086797 A CN201811086797 A CN 201811086797A CN 109370297 B CN109370297 B CN 109370297B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/04—Chemical paint or ink removers with surface-active agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/005—Chemical paint or ink removers containing organic solvents
Abstract
The invention relates to a practical multifunctional high-efficiency environment-friendly water-based paint remover, which comprises the following components in parts by weight: 35-45 parts of a main solvent, 2-8 parts of a cosolvent, 2-11 parts of an accelerator, 0.5-5 parts of a complexing agent, 2-12 parts of a composite metal corrosion inhibitor, 0.5-6 parts of a composite surfactant, 0-3 parts of a solubilizer, 1-6 parts of a thickener and the balance of deionized water to 100 parts. The water-based paint remover does not contain harmful substances such as heavy metal, strong alkali, nitrite, chromate, phosphorus, amine and amide, does not contain organic solvents such as chlorohydrocarbon, phenol, acetone and the like with high toxicity and volatility, has no flash point, low VOC, low odor, biodegradability, no pollution to the environment, mild property and safety to human bodies; the paint removing speed is high, and the paint is completely removed; has excellent corrosion inhibition on various base materials and does not damage the coating surface.
Description
Technical Field
The invention belongs to the technical field of paint spraying, and particularly relates to a practical multifunctional efficient environment-friendly water-based paint remover as well as a preparation method and application thereof.
Background
In the long-term use process of surface coatings of passenger cars, trucks, airplanes, ships, automobiles, buildings, equipment, machinery, furniture and the like in the railway industry, the surface coatings are corroded by various corrosive media and damaged by mechanical damage, and the phenomena of aging, cracking, peeling, falling off and the like occur, so that the paint films lose protective decoration effects, not only influence the appearance, but also easily induce corrosion to cause potential safety hazards, and the surface coatings are frequently removed partially or completely by using a chemical paint remover to spray new paint layers due to the requirements of safety and attractiveness.
The chemical paint remover ensures the safety and reliability of the base material. The chemical paint remover has the advantages of high efficiency, environmental protection, no corrosion and easy operation, and must ensure no corrosion and adverse effect on contacted metal and non-metal materials such as various structural steel, aluminum alloy, titanium alloy, magnesium alloy, concrete, stone, wood and the like, and has the characteristics of mild property, low VOC, low odor, biodegradability, substrate protection, no influence on secondary spraying, repeated use and the like.
The traditional paint remover in the market mainly adopts a solvent-type paint remover and an alkaline solution paint remover, the solvent-type paint remover mostly takes solvents containing chlorinated hydrocarbon, phenol, acetone and the like as main materials, and can be divided into different types of solvent-type paint removers such as neutral, alkaline, acidic and the like according to the difference of a coating system, the paint removing efficiency is higher, the corrosion to organisms is small, the operation is simple, and the problems of health influence and atmospheric environment pollution are caused by the large-scale use of the paint removers. With the improvement of environmental protection requirements and the research on harm to human bodies, the paint remover is gradually replaced. The alkaline solution paint remover is mainly used for removing paint of some parts, and the solution components comprise sodium hydroxide, sodium carbonate, sodium phosphate and the like. When the alkaline solution paint remover is used, heating is needed, a paint removing tank and a cleaning tank are configured, a paint removing part is immersed in the solution, a paint film is removed through saponification of alkaline substances and certain groups of the paint film, the use safety is poor, and the application range is narrow. Therefore, it is necessary to provide an environment-friendly water-based paint remover which has the advantages of high paint removing speed, wide application range, no corrosion to various substrates, no influence on recoating, high boiling point, good stability, easy biodegradation, no harm to operators and environment, low cost, small dosage, repeated use and simple operation.
Through searching, the following patent publications related to the patent application of the invention are found:
chinese patent CN107936677A discloses an aqueous paint remover, wherein formic acid, 0P-10 and the like are used;
CN107880633A uses benzyl alcohol, triethanolamine, etc.; CN107586482A uses monovalent alkali metal salts, sodium dichloroisocyanurate, etc.; CN107286727A uses benzyl alcohol, diethylene glycol monobutyl ether, etc.; CN106947312A uses dichloromethane, trichloromethane, dichloropropane, potassium hydroxide, sodium hydroxide, etc.; CN106590142A uses ethylene glycol monobutyl ether, benzaldehyde, methyl methacrylate, etc.; CN106519787A used acetone, nitromethane, dimethylbenzoxazole and the like; CN106519788A used benzyl alcohol, acetone, hydrogen peroxide, ammonia water, tert-butyl-4-hydroxyanisole, etc.; CN1065437967A adopts benzyl alcohol, acetone, hydrogen peroxide, ammonia water, nanometer aluminum powder, oxalic acid, etc.; CN106543799A uses benzyl alcohol, acetone, hydrogen peroxide, ammonia water, ethanol, sodium nitrate, etc.; CN106752290A uses benzyl alcohol, acetone, hydrogen peroxide, ammonia water, ethanol, formic acid, etc.; CN106752288A uses benzyl alcohol, acetone, hydrogen peroxide, ammonia water, ethanol, sodium tetraborate, sodium metaborate, etc.; CN107880633A uses benzyl alcohol, triethanolamine, ethylene glycol monobutyl ether, etc.; CN106752291A contains benzyl alcohol, acetone, hydrogen peroxide, tetrabutyl titanate, ammonia water, ethanol, boric acid, sodium dichloroisocyanurate, and nano-silica; CN108129904A uses propylene carbonate, pyrrolidone, sodium hydroxide, potassium permanganate, metasilicate, etc.; CN106519783A uses triethyl phosphate, dimethyl adipate, etc.; CN106084976A uses dichloromethane, phenol, methanol, formic acid, diethyl ether, vinyl alcohol, benzyl alcohol, etc.; CN106147366A adopts propylene carbonate, dimethyl carbonate, N-methyl pyrrolidone, acetone, polyoxyethylene octylphenol ether, triglyceride of decanoic acid, sodium tripolyphosphate, polyvinyl alcohol, etc.; CN106280668A contains formic acid, chloroacetic acid, chloroform, ethanol, and diethyl ether; CN107266956A uses benzyl alcohol, triethanolamine, ethanolamine, potassium hydroxide, ethylene glycol monobutyl ether, etc.; CN105255248A uses benzyl alcohol, potassium hydroxide, etc.; CN105295510A uses benzoic acid, 2-methyl-2-pyrrolidone, diethylthiourea, dimethylaminoethoxyethanol, propionic acid, etc.; CN104559432A uses dichloromethane, sodium nitrite, vinyl alcohol, propanol, etc.; CN105504953A uses sodium hydroxide, silicate compounds, and the like; CN104277570A uses dichloromethane, formic acid, ethanol, etc.; CN104017428A uses methanol, benzoic acid, trichloroethylene, dichloromethane, etc.; CN104017428B uses methanol, benzoic acid, trichloroethylene, dichloromethane, etc.; CN103804983A uses sodium hydroxide, fatty alcohol polyoxyalkyl ether, silicate compound, etc.; benzyl alcohol, potassium hydroxide carbolic acid, chloroalkane, carbolic acid, etc. are used in CN104513519A, CN 102181200A; CN101323723A uses glycol ether, alkyl pyrrolidone, dimethyl carbonate, propylene carbonate, etc.; in CN1082079A, chloroform, formic acid, chloroacetic acid, etc. are used, and all of these substances have the problems of health hazard and atmospheric environmental pollution, and most of them have been limited or prohibited for use.
By contrast, the present patent application is substantially different from the above patent publications.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a practical multifunctional high-efficiency environment-friendly water-based paint remover and a preparation method and application thereof, the water-based paint remover does not contain harmful substances such as heavy metal, strong alkali, nitrite, chromate, phosphorus, amine and amide, does not contain organic solvents such as chlorohydrocarbon, phenol, acetone and the like with high toxicity and volatility, has no flash point, low VOC, low odor and biodegradability, and is pollution-free to the environment, mild in property and safe to a human body; the paint removing speed is high, and the paint is completely removed; the corrosion inhibition performance on various base materials is excellent, and the coating surface is not damaged; the product is used at room temperature, a heating device is omitted, and the operation process is simpler; the paint film is sprayed or brushed on the surface of the paint film to swell in a short time, and the paint film can be removed by adopting a simple scraping method and a water flushing method, so that the aim of environmental protection and paint removal is fulfilled; no oil film is formed, and secondary coating is not influenced; the paint remover is suitable for removing various paint layers in the fields of railways, airplanes, ships, automobiles, buildings, industrial equipment, machinery and the like, such as various paints of amino, nitro, ethylene peroxide, acrylic acid, alkyd, epoxy resin, organic silicon, polyamino acid, powder, zinc-chromium layer, graffiti, inorganic zinc and the like, and can also be used for removing runway rubber, glue, adhesive, latex and the like, and the application range is wide; the high boiling point and the good stability can better meet the requirements of use, transportation and storage; the dosage is small, the composite material can be used repeatedly, and the economic efficiency is better. The production equipment and the process are simple and easy to realize.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a practical multifunctional high-efficiency environment-friendly water-based paint remover comprises the following components in parts by weight:
35-45 parts of a main solvent, 2-8 parts of a cosolvent, 2-11 parts of an accelerator, 0.5-5 parts of a complexing agent, 2-12 parts of a composite metal corrosion inhibitor, 0.5-6 parts of a composite surfactant, 0-3 parts of a solubilizer, 1-6 parts of a thickener and the balance of deionized water to 100 parts.
Moreover, the resistivity of the deionized water is greater than 4M omega cm; or the solubilizer is sodium dimethyl benzene sulfonate or sodium cumene sulfonate.
The main solvent is one or a mixture of more than two of benzyl alcohol and N-methyl-2-pyrrolidone; or the cosolvent is one or a mixture of more than two of isopropanol, 3-methoxy-3-methyl-1-butanol and dimethyl sulfoxide.
The complexing agent is one or a mixture of more than two of ethylene diamine tetraacetic acid, ethylene diamine tetraacetic acid tetrasodium, sodium citrate, sodium gluconate and sodium polyacrylate; or the composite metal corrosion inhibitor is a non-ferrous metal corrosion inhibitor and a ferrous metal corrosion inhibitor in a mass ratio of 1-4: 1; or the accelerant is one of hydrogen peroxide or organic acid.
Moreover, the non-ferrous metal corrosion inhibitor is a mixture of two or more than two of aluminum alloy corrosion inhibitor XL845, aluminum alloy corrosion inhibitor N815, sodium silicate, sodium metasilicate pentahydrate, potassium silicate, benzotriazole and methylbenzotriazole; the ferrous metal corrosion inhibitor is one or two of sodium benzoate, sodium molybdate and potassium molybdate;
or the organic acid is one of formic acid, citric acid and glycolic acid.
And the composite surfactant is a nonionic surfactant and an anionic surfactant in a mass ratio of 1: 1-5; or the thickening agent is one or two of aleurone powder or guar gum.
And, the nonionic surfactant is polyether polyols L61, L64, F68; oleic acid polyoxyethylene ester OEO-103, 105, 110, 115; isomeric tridecanol polyoxyethylene ethers 1309, 1305; laurinol polyoxyethylene polyoxypropylene ether LEP-10; one or a mixture of more than two of cardanol polyoxyethylene ether BGF-10, BGF-9 and BGF-7;
or the anionic surfactant is one of sodium dodecyl benzene sulfonate, sodium fatty alcohol ether sulfate and fatty acid methyl ester ethoxylate sulfonate.
The preparation method of the practical multifunctional efficient environment-friendly water-based paint remover comprises the following steps:
A. weighing a main solvent, a cosolvent, an accelerator, a solubilizer, a complexing agent, a composite metal corrosion inhibitor, a composite surfactant and a thickening agent according to the mass ratio;
B. adding deionized water into a stirring kettle at room temperature, starting stirring, and then sequentially adding a main solvent, a cosolvent, an accelerator, a solubilizer, a complexing agent, a composite metal corrosion inhibitor, a composite surfactant and a thickening agent;
C. stirring at the rotating speed of 50-500 r/min for 60-90 min, and uniformly mixing to obtain the practical multifunctional high-efficiency environment-friendly water-based paint remover.
Further, in the step B: when the main solvent, the cosolvent, the accelerator, the solubilizer, the complexing agent, the composite metal corrosion inhibitor, the composite surfactant and the thickener are added in sequence, one component is added each time, the mixture is stirred until the components are completely dissolved, and then the next component is added.
The practical multifunctional efficient environment-friendly water-based paint remover is applied to the paint spraying of railways, airplanes, ships, automobiles, buildings, industrial equipment, machinery and furniture.
The invention has the advantages and positive effects that:
1. the paint remover adopts a main solvent, and is compounded with a high-efficiency cosolvent, an accelerator, a solubilizer, a complexing agent, a composite metal corrosion inhibitor, a composite surfactant and a thickening agent, the water-based paint remover does not contain harmful substances such as heavy metal, strong alkali, nitrite, chromate, phosphorus, amines and amide, does not contain organic solvents such as chlorohydrocarbon, phenol, acetone and the like with high toxicity and volatility, has no flash point, low VOC, low odor, biodegradability, mild property, no pollution to the environment and safety to human bodies; the corrosion inhibition performance on various base materials is excellent, the coating surface is not damaged, and the corrosion and adverse effects on contacted metal and non-metal materials such as various structural steel, aluminum alloy, titanium alloy, magnesium alloy, concrete, stone, wood and the like are avoided; no oil film is formed, and secondary coating is not influenced; high boiling point and good stability, and can better meet the requirements of use, transportation and storage.
2. The paint remover adopts the environment-friendly organic solvent with strong water solubility as a main solvent, and adopts the high-efficiency cosolvent, a plurality of metal corrosion inhibitors, a plurality of surfactants and a food-grade thickener.
3. The paint remover has simple production equipment and process and is easy to realize; the paint remover has excellent paint removing effect, can quickly and thoroughly remove various coatings on the surfaces of the fields of railways, airplanes, ships, automobiles, buildings, industrial equipment, machinery, furniture and the like, such as amino, nitro, vinyl peroxide, acrylic acid, alkyd, epoxy resin, organic silicon, polyamino acid, powder, zinc-chromium layer, graffiti, inorganic zinc and other various coatings, can also be used for removing runway rubber, glue, adhesive, latex and the like, and has wide application range. The paint remover is used at room temperature, so that the operation process is simpler, and the paint film can be removed by adopting a simple scraping method water flushing method, thereby achieving the aim of environment-friendly paint removal; the dosage is small, the composite material can be used repeatedly, and the economic efficiency is better.
Detailed Description
The present invention will be further described with reference to specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The raw materials used in the invention are conventional commercial products unless otherwise specified; the methods used in the present invention are conventional in the art unless otherwise specified.
Example 1
A practical multifunctional high-efficiency environment-friendly water-based paint remover comprises the following components in percentage by mass:
35% of natural benzyl alcohol, 6% of N-methyl-2-pyrrolidone, 2% of 3-methoxy-3-methyl-1-butanol, 4.1% of hydrogen peroxide, 1% of ethylene diamine tetraacetic acid tetrasodium salt, 0.6% of sodium gluconate, 0.6% of aluminum alloy corrosion inhibitor XL 8451.6%, 0.15% of aluminum alloy corrosion inhibitor N8150.7%, 0.6% of potassium silicate, 0.15% of methyl benzotriazole, 0.85% of sodium benzoate, 0.15% of sodium molybdate, 0.26% of polyether polyol L640.09%, polyoxyethylene oleate OEO-1030.05%, polyoxyethylene lauryl ether LEP-100.07%, 0.24% of fatty acid methyl ester ethoxylate sulfonate, 0.12% of sodium dodecyl benzene sulfonate, 0.08% of sodium fatty alcohol ether sulfate, 1.8% of white dextrin powder and 44.8% of deionized water.
The preparation method of the practical multifunctional efficient environment-friendly water-based paint remover comprises the following steps:
adding deionized water into a stirring kettle at room temperature, starting stirring at the rotating speed of 50-100 r/min, adding natural benzyl alcohol, N-methyl-2-pyrrolidone, 3-methoxy-3-methyl-1-butanol and hydrogen peroxide, and stirring until the natural benzyl alcohol, the N-methyl-2-pyrrolidone, the 3-methoxy-3-methyl-1-butanol and the hydrogen peroxide are completely dissolved; adding ethylene diamine tetraacetic acid tetrasodium salt and sodium gluconate at the rotating speed of 100-200 r/min, and stirring until the tetrasodium salt and the sodium gluconate are completely dissolved; adding an aluminum alloy corrosion inhibitor XL845, an aluminum alloy corrosion inhibitor N815, sodium benzoate, sodium molybdate, potassium silicate and methylbenzotriazole, and stirring until the aluminum alloy corrosion inhibitor is completely dissolved; adding fatty acid methyl ester ethoxylate sulfonate, sodium dodecyl benzene sulfonate and sodium fatty alcohol ether sulfate, and stirring until the fatty acid methyl ester ethoxylate sulfonate, the sodium dodecyl benzene sulfonate and the sodium fatty alcohol ether sulfate are completely dissolved; at the rotating speed of 300-400 r/min, adding polyether polyol L64, oleic acid polyoxyethylene ester OEO-103 and lauryl alcohol polyoxyethylene polyoxypropylene ether, and stirring until the mixture is completely dissolved; the rotating speed is 400-500 r/min, the white dextrin powder is added, and the mixture is stirred until the white dextrin powder is completely dissolved. The whole stirring time is 60-90 min, and the paint is finally a uniform solution, so that the practical multifunctional high-efficiency environment-friendly water-based paint remover is obtained.
Example 2
A practical multifunctional high-efficiency environment-friendly water-based paint remover comprises the following components in percentage by mass:
38% of natural benzyl alcohol, 3% of isopropanol, 1.2% of dimethyl sulfoxide, 3.4% of hydrogen peroxide, 1.1% of sodium gluconate, 0.9% of sodium polyacrylate, 0. 8152.5% of aluminum alloy corrosion inhibitor N, 0.6% of sodium silicate, 0.3% of potassium silicate, 0.2% of benzotriazole, 0.92% of sodium benzoate, 0.2% of potassium molybdate, 13090.13% of isomeric tridecanol polyoxyethylene ether, 13050.06% of isomeric tridecanol polyoxyethylene ether, 0.11% of cardanol polyoxyethylene ether BGF, 0.9% of oleic acid polyoxyethylene ester OEO-1050.08%, 0.06% of fatty alcohol ether sodium sulfate, 0.06% of fatty acid methyl ester ethoxylate sulfonate, 2% of white dextrin powder and 44.34% of deionized water.
The preparation method of the practical multifunctional efficient environment-friendly water-based paint remover comprises the following steps:
adding deionized water into a stirring kettle at room temperature, starting stirring at the rotating speed of 50-100 r/min, adding natural benzyl alcohol, isopropanol, dimethyl sulfoxide and hydrogen peroxide, and stirring until the natural benzyl alcohol, the isopropanol, the dimethyl sulfoxide and the hydrogen peroxide are completely dissolved; adding sodium gluconate and sodium polyacrylate at the rotating speed of 100-200 r/min, and stirring until the sodium gluconate and the sodium polyacrylate are completely dissolved; adding the aluminum alloy corrosion inhibitor N815, sodium silicate, potassium silicate, sodium benzoate, potassium molybdate and benzotriazole, and stirring until the aluminum alloy corrosion inhibitor N815, the sodium silicate, the potassium silicate, the sodium benzoate, the potassium molybdate and the benzotriazole are completely dissolved; adding fatty alcohol ether sodium sulfate and fatty acid methyl ester ethoxylate sulfonate, and stirring to dissolve completely; adding isomeric tridecanol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether 1305, cardanol polyoxyethylene ether BGF-10 and oleic acid polyoxyethylene ester OEO-105 at the rotating speed of 300-400 r/min, and stirring until the components are completely dissolved; the rotating speed is 400-500 r/min, the white dextrin powder is added, and the mixture is stirred until the white dextrin powder is completely dissolved. The whole stirring time is 60-90 min, and the paint is finally a uniform solution, so that the practical multifunctional high-efficiency environment-friendly water-based paint remover is obtained.
Example 3
A practical multifunctional high-efficiency environment-friendly water-based paint remover comprises the following components in percentage by mass:
40% of N-methyl-2-pyrrolidone, 1.2% of 3-methoxy-3-methyl-1-butanol, 4% of dimethyl sulfoxide, 2.8% of hydrogen peroxide, 1% of ethylene diamine tetraacetic acid tetrasodium salt, 0.8% of sodium citrate, an aluminum alloy corrosion inhibitor XL 8451.85%, 1% of sodium silicate, 0.5% of potassium silicate, 0.1% of methylbenzotriazole, 1% of sodium molybdate, 0.2% of potassium molybdate, L610.09% of polyether polyol, L640.03% of polyether polyol, 1050.09% of polyoxyethylene oleate, LEP-100.05% of lauryl alcohol polyoxyethylene polyoxypropylene ether, 1% of sodium dodecyl benzene sulfonate, 0.05% of fatty acid methyl ester ethoxylate sulfonate, 3.5% of guar gum and 40.74% of deionized water.
The preparation method of the practical multifunctional efficient environment-friendly water-based paint remover comprises the following steps:
adding deionized water into a stirring kettle at room temperature, starting stirring at the rotating speed of 50-100 r/min, adding N-methyl-2-pyrrolidone, 3-methoxy-3-methyl-1-butanol, dimethyl sulfoxide and hydrogen peroxide, and stirring until the materials are completely dissolved; adding ethylene diamine tetraacetic acid tetrasodium salt and sodium citrate at the rotating speed of 100-200 r/min, and stirring until the tetrasodium salt and the sodium citrate are completely dissolved; then adding an aluminum alloy corrosion inhibitor XL845, sodium silicate, potassium silicate, sodium molybdate, potassium molybdate and methylbenzotriazole, and stirring until the aluminum alloy corrosion inhibitor XL845, the sodium silicate, the potassium silicate, the sodium molybdate, the potassium molybdate and the methylbenzotriazole are completely dissolved; adding sodium dodecyl benzene sulfonate and fatty acid methyl ester ethoxylate sulfonate, and stirring to dissolve completely; adding isomeric polyether polyol L61, polyether polyol L64, polyoxyethylene oleate 105 and polyoxyethylene lauryl ether LEP-10 at the rotation speed of 300-400 r/min, and stirring until the mixture is completely dissolved; and (3) adding guar gum at the rotating speed of 400-500 r/min, and stirring until the guar gum is completely dissolved. The whole stirring time is 60-90 min, and the paint is finally a uniform solution, so that the practical multifunctional high-efficiency environment-friendly water-based paint remover is obtained.
Example 4
A practical multifunctional high-efficiency environment-friendly water-based paint remover comprises the following components in parts by weight:
35-45 parts of a main solvent, 2-8 parts of a cosolvent, 2-11 parts of an accelerator, 0.5-5 parts of a complexing agent, 2-12 parts of a composite metal corrosion inhibitor, 0.5-6 parts of a composite surfactant, 0-3 parts of a solubilizer, 1-6 parts of a thickener and the balance of deionized water to 100 parts.
Preferably, the resistivity of the deionized water is greater than 4M Ω -cm; or the solubilizer is sodium dimethyl benzene sulfonate or sodium cumene sulfonate.
Preferably, the main solvent is one or a mixture of more than two of benzyl alcohol and N-methyl-2-pyrrolidone; or the cosolvent is one or a mixture of more than two of isopropanol, 3-methoxy-3-methyl-1-butanol and dimethyl sulfoxide.
Preferably, the complexing agent is one or a mixture of more than two of disodium ethylene diamine tetraacetate, tetrasodium ethylene diamine tetraacetate, sodium citrate, sodium gluconate and sodium polyacrylate; or the composite metal corrosion inhibitor is a non-ferrous metal corrosion inhibitor and a ferrous metal corrosion inhibitor in a mass ratio of 1-4: 1; or the accelerant is one of hydrogen peroxide or organic acid.
Preferably, the non-ferrous metal corrosion inhibitor is a mixture of two or more than two of aluminum alloy corrosion inhibitor XL845, aluminum alloy corrosion inhibitor N815, sodium silicate, sodium metasilicate pentahydrate, potassium silicate, benzotriazole and methylbenzotriazole; the ferrous metal corrosion inhibitor is one or two of sodium benzoate, sodium molybdate and potassium molybdate;
or the organic acid is one of formic acid, citric acid and glycolic acid.
Preferably, the composite surfactant is a nonionic surfactant and an anionic surfactant in a mass ratio of 1: 1-5; or the thickening agent is one or two of aleurone powder or guar gum.
Preferably, the nonionic surfactant is polyether polyols L61, L64, F68; oleic acid polyoxyethylene ester OEO-103, 105, 110, 115; isomeric tridecanol polyoxyethylene ethers 1309, 1305; laurinol polyoxyethylene polyoxypropylene ether LEP-10; one or a mixture of more than two of cardanol polyoxyethylene ether BGF-10, BGF-9 and BGF-7;
or the anionic surfactant is one of sodium dodecyl benzene sulfonate, sodium fatty alcohol ether sulfate and fatty acid methyl ester ethoxylate sulfonate.
The preparation method of the practical multifunctional efficient environment-friendly water-based paint remover comprises the following steps:
A. weighing a main solvent, a cosolvent, an accelerator, a solubilizer, a complexing agent, a composite metal corrosion inhibitor, a composite surfactant and a thickening agent according to the mass ratio;
B. adding deionized water into a stirring kettle at room temperature, starting stirring, and then sequentially adding a main solvent, a cosolvent, an accelerator, a solubilizer, a complexing agent, a composite metal corrosion inhibitor, a composite surfactant and a thickening agent;
C. stirring at the rotating speed of 50-500 r/min for 60-90 min, and uniformly mixing to obtain the practical multifunctional high-efficiency environment-friendly water-based paint remover.
Preferably, in the step B: when the main solvent, the cosolvent, the accelerator, the solubilizer, the complexing agent, the composite metal corrosion inhibitor, the composite surfactant and the thickener are added in sequence, one component is added each time, the mixture is stirred until the components are completely dissolved, and then the next component is added.
The practical multifunctional efficient environment-friendly water-based paint remover is applied to the paint spraying of railways, airplanes, ships, automobiles, buildings, industrial equipment, machinery and furniture.
The practical multifunctional efficient environment-friendly water-based paint remover disclosed by the invention passes airworthiness tests such as boeing, airbus and the like, and proves that the product has no damage to various structural steel, aluminum alloy, titanium alloy, magnesium alloy, organic glass and other materials of an airplane, and does not generate hydrogen embrittlement, interlayer corrosion and full-immersion corrosion; excellent paint removing efficiency, paint removing surface recoatability and rinsing property; low odor, low VOC, no flash point, biodegradability, environmental protection and no toxicity.
Although the embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments disclosed.
Claims (3)
1. The utility model provides a multi-functional high-efficient environmental protection waterborne paint remover of practical which characterized in that: the composition comprises the following components in parts by weight:
35-45 parts of a main solvent, 2-8 parts of a cosolvent, 2-11 parts of an accelerator, 0.5-5 parts of a complexing agent, 2-12 parts of a composite metal corrosion inhibitor, 0.5-6 parts of a composite surfactant, 0-3 parts of a solubilizer, 1-6 parts of a thickener and the balance of deionized water to 100 parts;
the main solvent is one or a mixture of more than two of benzyl alcohol and N-methyl-2-pyrrolidone;
the cosolvent is one or a mixture of more than two of isopropanol, 3-methoxy-3-methyl-1-butanol and dimethyl sulfoxide;
the complexing agent is one or a mixture of more than two of disodium ethylene diamine tetraacetate, tetrasodium ethylene diamine tetraacetate, sodium citrate, sodium gluconate and sodium polyacrylate; the composite metal corrosion inhibitor is a non-ferrous metal corrosion inhibitor and a ferrous metal corrosion inhibitor in a mass ratio of 1-4: 1; the non-ferrous metal corrosion inhibitor is a mixture of two or more than two of aluminum alloy corrosion inhibitor XL845, aluminum alloy corrosion inhibitor N815, sodium silicate, sodium metasilicate pentahydrate, potassium silicate, benzotriazole and methyl benzotriazole; the ferrous metal corrosion inhibitor is one or two of sodium benzoate, sodium molybdate and potassium molybdate;
the accelerator is one of hydrogen peroxide or organic acid; the organic acid is one of formic acid, citric acid and glycolic acid;
the composite surfactant is a mixture of a nonionic surfactant and an anionic surfactant according to a mass ratio of 1: 1-5; the thickening agent is one or two of aleurone powder or guar gum;
the nonionic surfactant is polyether polyols L61, L64 and F68; oleic acid polyoxyethylene ester OEO-103, 105, 110, 115; isomeric tridecanol polyoxyethylene ethers 1309, 1305; laurinol polyoxyethylene polyoxypropylene ether LEP-10; one or a mixture of more than two of cardanol polyoxyethylene ether BGF-10, BGF-9 and BGF-7;
the anionic surfactant is one of sodium dodecyl benzene sulfonate, sodium fatty alcohol ether sulfate and fatty acid methyl ester ethoxylate sulfonate;
the resistivity of the deionized water is more than 4M omega cm; the solubilizer is sodium dimethyl benzene sulfonate or sodium isopropyl benzene sulfonate;
the preparation method of the practical multifunctional efficient environment-friendly water-based paint remover comprises the following steps:
A. weighing a main solvent, a cosolvent, an accelerator, a solubilizer, a complexing agent, a composite metal corrosion inhibitor, a composite surfactant and a thickening agent according to the mass ratio;
B. adding deionized water into a stirring kettle at room temperature, starting stirring, and then sequentially adding a main solvent, a cosolvent, an accelerator, a solubilizer, a complexing agent, a composite metal corrosion inhibitor, a composite surfactant and a thickening agent;
C. stirring at the rotating speed of 50-500 r/min for 60-90 min, and uniformly mixing to obtain the practical multifunctional high-efficiency environment-friendly water-based paint remover.
2. The practical multifunctional efficient environment-friendly water-based paint remover according to claim 1, characterized in that: in the step B: when the main solvent, the cosolvent, the accelerator, the solubilizer, the complexing agent, the composite metal corrosion inhibitor, the composite surfactant and the thickener are added in sequence, one component is added each time, the mixture is stirred until the components are completely dissolved, and then the next component is added.
3. The use of the practical, multifunctional, efficient, environmentally friendly aqueous paint stripper of claim 1 or 2 in the painting of railways, airplanes, ships, automobiles, buildings, industrial equipment, machinery, and furniture.
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| CN112899824B (en) * | 2021-01-22 | 2022-08-09 | 江苏钟山新材料有限公司 | FDY oil agent for polyester spinning |
| IT202100032414A1 (en) * | 2021-12-23 | 2023-06-23 | Andrea Macchia | GREEN CLEANING COMPOSITION FOR THE REMOVAL OF AGED PAINTS FROM POLYCHROME WORKS OF HISTORICAL AND ARTISTIC INTEREST. |
| CN114656830A (en) * | 2022-04-24 | 2022-06-24 | 安徽光铧帝业化学有限公司 | Universal long-acting water-based environment-friendly paint remover as well as preparation method and use method thereof |
| CN115093742A (en) * | 2022-07-16 | 2022-09-23 | 任彭 | Paint removing liquid and preparation method thereof |
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