CN110819158A - Efficient environment-friendly nontoxic water-based paint remover as well as preparation method and use method thereof - Google Patents
Efficient environment-friendly nontoxic water-based paint remover as well as preparation method and use method thereof Download PDFInfo
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- CN110819158A CN110819158A CN201910948413.5A CN201910948413A CN110819158A CN 110819158 A CN110819158 A CN 110819158A CN 201910948413 A CN201910948413 A CN 201910948413A CN 110819158 A CN110819158 A CN 110819158A
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- 239000003973 paint Substances 0.000 title claims abstract description 128
- 231100000252 nontoxic Toxicity 0.000 title claims abstract description 25
- 230000003000 nontoxic effect Effects 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims description 21
- 238000002360 preparation method Methods 0.000 title description 9
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 229940057995 liquid paraffin Drugs 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 18
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 10
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 4
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 4
- AVBJHQDHVYGQLS-AWEZNQCLSA-N (2s)-2-(dodecanoylamino)pentanedioic acid Chemical compound CCCCCCCCCCCC(=O)N[C@H](C(O)=O)CCC(O)=O AVBJHQDHVYGQLS-AWEZNQCLSA-N 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- 229940077388 benzenesulfonate Drugs 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 235000019445 benzyl alcohol Nutrition 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 231100000956 nontoxicity Toxicity 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000002585 base Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000003995 emulsifying agent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 231100000053 low toxicity Toxicity 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 159000000032 aromatic acids Chemical class 0.000 description 2
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- -1 sodium fatty alcohol Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a high-efficiency environment-friendly nontoxic aqueous paint remover, which comprises the following raw materials in parts by weight: 60-70 parts of N-methyl-2-pyrrolidone; 15-25 parts of benzyl alcohol; 1-5 parts of a paint removal accelerator; 1-4 parts of a surfactant; 5-10 parts of liquid paraffin. The paint remover has the characteristics of good paint removing effect, high paint removing speed, low volatility, small environmental pollution, safety, no toxicity, low corrosivity, low cost and the like, and has very excellent application prospect.
Description
Technical Field
The invention belongs to the technical field of paint removers, and particularly relates to an efficient environment-friendly non-toxic water-based paint remover as well as a preparation method and a use method thereof.
Background
With the high growth of national economy and the rapid development of industry in China, various coatings are adopted in industry and agriculture to protect and decorate the surfaces of materials such as metal, wood, plastic, leather and the like. The application range is wider and wider, and the variety, the performance and the coating technology of the coating are also obviously improved. High-grade paint such as high-grade polyurethane paint powder paint, water paint using water to replace organic solvent, etc. is developed rapidly. These new coatings generally have good adhesion, flexibility, abrasion resistance, shock resistance, temperature resistance, water resistance, chemical corrosion resistance and other properties, and have good decorative effects. During the use of the coating, the coating film can be damaged or gradually aged. When coating or repairing electrical appliances, mechanical equipment, vehicles and ships, the old or damaged coating needs to be removed and then sprayed. The method of removal of old paint films varies from substrate to substrate, coating and from one coating to another. The methods for removing the old paint film are various, and the common methods include a paint remover method, an alkaline solution method, a paint paste removing method, an organic solvent method, a flame method, a manual shovel method, a sand blasting method and the like. The paint remover can quickly remove the old paint by a series of physical and chemical actions such as dissolution, permeation, swelling, stripping, reaction and the like, thereby being widely applied.
At present, paint removers developed at home and abroad are various in types, and can be generally divided into organic paint removers and inorganic paint removers in composition. The inorganic paint remover is usually an alkaline aqueous solution, and the main components are charged potassium, charged sodium, sodium silicate and the like. The alkaline paint remover utilizes the saponification reaction of alkali liquor on resin, and has the advantages of low cost, safe production, small influence on human body, good paint removing effect, and the defects of heating during use, needing a certain heating device, being limited by the size of paint removing parts and long paint removing period. The treated surface is not easy to spray paint and has serious corrosion to metal. The organic paint remover has good paint removing effect, high speed, small corrosivity to metal, simple operation, toxicity, flammability and high cost. Organic strippers generally contain more methylene chloride, phenol, volatile solvents and other harmful substances, thereby causing the strippers to be more volatile and toxic. Combining the advantages and disadvantages of both inorganic and organic strippers, organic strippers are widely used, and thus the research work on them has been rapidly developed. Therefore, the research on novel paint removers with low volatility, low toxicity or no toxicity, safety to metal substrates and no harm to operators or environment is particularly necessary. The aqueous paint remover refers to paint removers which take organic solvents with strong water solubility as main solvents, and even paint removers which do not contain organic solvents at all. With the enhancement of environmental awareness, the advantages of the water-based paint remover are more and more obvious. However, the current researches on the water-based paint remover are not many, and the utilization of the water-based paint remover is limited. The water-based paint remover relieves the problem of environmental pollution caused by excessive solvent in the original paint remover, so that the water-based paint remover has more obvious advantages than an organic paint remover, especially a chlorinated hydrocarbon paint remover.
Through searching, the following patent publications related to the patent application of the invention are found:
1. a non-corrosive and non-scratch metal paint remover and a preparation method and application thereof (CN107353701A), the paint remover is convenient and simple to use, and can effectively remove various common paint layers; the paint remover has the advantages of no corrosion damage to a base material, low volatility, no damage to a human body during use, no attachments such as paraffin, kerosene and the like, convenience for secondary paint spraying, capability of improving the efficiency of paint layer wiping by the added inorganic additive carbon oxide nanotube, no scratch to the base material, safety, environmental protection, no chlorinated hydrocarbon type organic solvent, low cost of the cleaning agent, no corrosion to a metal base material by the paint remover, antibacterial property and high stability.
2. A nontoxic environment-friendly paint remover (CN102408775A) comprises aromatic alcohol, acid and emulsifier, wherein the content of aromatic alcohol is 10-60 wt%, the content of acid is 30-70 wt%, and the content of emulsifier is 5-20 wt%. The paint remover has the advantages of high paint removing speed, good effect, low toxicity, low volatility and no corrosion to various base materials, the base materials after paint removing can be directly sprayed for the second time, the adhesive force with a paint layer is good, the secondary injection molding is omitted, and the cost is saved for recycling the base materials again.
3. A paint remover composition (CN101058691) comprises aromatic alcohol, acid and emulsifier, wherein the content of the aromatic alcohol is 10-60 wt%, the content of the acid is 30-70 wt%, and the content of the emulsifier is 5-20 wt% based on the total weight of the composition. The paint remover has the advantages of high paint removing speed, good effect, low toxicity, low volatility and no corrosion to various base materials, the base materials after paint removing can be directly sprayed for the second time, the adhesive force with a paint layer is good, the secondary injection molding is omitted, and the cost is saved for recycling the base materials again.
By contrast, the present patent application is substantially different from the above patent publications. Although the paint strippers described above are effective in stripping paint films from metal surfaces, they do not contain accelerators or the accelerators are acids. Which causes problems of slow paint removal and corrosion of the metal substrate. Therefore, the requirements of quick paint removal and no corrosion to metal substrates can be met only by compounding a safe and effective accelerator and a solvent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the efficient environment-friendly non-toxic water-based paint remover, the preparation method and the use method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an efficient environment-friendly nontoxic aqueous paint remover comprises the following raw materials in parts by weight:
and the paint removing accelerator is one or a mixture of more of monoethanolamine, diethanolamine and triethanolamine.
And the surfactant is one or a mixture of more of linear alkyl benzene sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate, sodium lauryl sulfate, lauroyl glutamic acid and nonylphenol polyoxyethylene ether.
The preparation method of the efficient environment-friendly nontoxic water-based paint remover comprises the following steps:
firstly, uniformly mixing N-methyl-2-pyrrolidone and benzyl alcohol, adding liquid paraffin into the mixture, then adding a surfactant and a paint removal accelerator into the mixture, and uniformly stirring to obtain the efficient environment-friendly nontoxic aqueous paint remover.
The use method of the efficient environment-friendly nontoxic water-based paint remover comprises the following steps:
directly soaking the object to be depainted in the paint remover at normal temperature for 5-60 min.
The invention has the advantages and positive effects that:
1. the paint remover disclosed by the invention has the characteristics of good paint removing effect, high paint removing speed, low volatility, small environmental pollution, safety, no toxicity, low corrosivity, low cost and the like, and has very excellent application prospect.
2. Compared with the traditional paint remover, the paint remover disclosed by the invention does not contain dichloromethane, phenol, a volatile solvent and other harmful substances, so that the problems of high toxicity, strong smell, environmental damage and the like of the traditional paint remover are effectively solved.
3. Compared with the traditional paint remover, the paint remover does not contain acid paint removing accelerators, thereby effectively solving the problem that the acid paint removing accelerators corrode metal substrates.
Detailed Description
The following detailed description of the embodiments of the present invention is provided for the purpose of illustration and not limitation, and should not be construed as limiting 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.
An efficient environment-friendly nontoxic aqueous paint remover comprises the following raw materials in parts by weight:
preferably, the paint removal accelerator is one or a mixture of monoethanolamine, diethanolamine and triethanolamine.
Preferably, the surfactant is one or a mixture of more of linear alkyl benzene sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate, sodium lauryl sulfate, lauroyl glutamic acid and nonylphenol polyoxyethylene ether.
The preparation method of the efficient environment-friendly nontoxic water-based paint remover comprises the following steps:
firstly, uniformly mixing N-methyl-2-pyrrolidone and benzyl alcohol, adding liquid paraffin into the mixture, then adding a surfactant and a paint removal accelerator into the mixture, and uniformly stirring to obtain the efficient environment-friendly nontoxic aqueous paint remover.
The use method of the efficient environment-friendly nontoxic water-based paint remover comprises the following steps:
directly soaking the object to be depainted in the paint remover at normal temperature for 5-60 min.
Example 1:
the efficient environment-friendly nontoxic aqueous paint remover comprises the following raw materials in parts by weight (taking 1000g of the efficient environment-friendly nontoxic aqueous paint remover as an example):
the preparation method of the efficient environment-friendly nontoxic aqueous paint remover comprises the following steps: firstly, uniformly mixing N-methyl-2-pyrrolidone and benzyl alcohol according to the formula ratio, adding liquid paraffin, then adding sodium fatty alcohol polyoxyethylene ether sulfate and monoethanolamine into the mixture, and uniformly stirring.
When in use, an object needing paint removal is directly soaked in the paint remover for 5min-60min at normal temperature, and the paint remover can be used for removing epoxy paint, water-based paint, polyester paint and the like on the object. Labeled sample 1.
Example 2
An efficient environment-friendly nontoxic aqueous paint remover comprises the following raw materials in parts by weight:
the preparation method of the efficient environment-friendly nontoxic aqueous paint remover comprises the following steps: firstly, uniformly mixing N-methyl-2-pyrrolidone and benzyl alcohol according to the formula ratio, adding liquid paraffin, then adding sodium lauryl sulfate and triethanolamine into the mixture, and uniformly stirring.
When in use, an object needing paint removal is directly soaked in the paint remover for 5min-60min at normal temperature, and the paint remover can be used for removing epoxy paint, water-based paint, polyester paint and the like on the object. Labeled sample 2.
And (3) paint removal performance determination:
determination of the paint stripping time: different kinds of commercially available paints were applied to standard 45# steel test pieces, and left to age for one month at room temperature. And soaking the painted and aged paint plate in a sample to be tested. The time taken for the film to remove was recorded and the results are shown in Table 1 below. The time for removing the paint film is the time from the beginning of soaking the standard test piece of the 45# steel into the paint remover to the end of observing the surface of the standard test piece of the 45# steel by naked eyes until the paint film can not be seen.
Damage to the metal substrate: and taking the standard test piece of the 45# steel after the paint film is removed out of the paint remover, washing the standard test piece for 5 times by using clear water, and observing whether the surface of the standard test piece of the 45# steel is damaged or not by naked eyes. The measurement results are shown in table 1:
| paint removal time (polyurethane paint) | Paint removing time (alkyd paint) | Damage to metal substrates | |
| Sample 1 | 11 | 9 | Non-damage |
| Sample 2 | 16 | 19 | Non-damage |
| Commercial sample | 15 | 20 | Occurrence of rust |
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 (5)
1. An efficient environment-friendly nontoxic water-based paint remover is characterized in that: the raw materials comprise the following components in parts by weight:
2. the efficient, environment-friendly and non-toxic aqueous paint remover according to claim 1, characterized in that: the paint removal accelerator is one or a mixture of more of monoethanolamine, diethanolamine and triethanolamine.
3. The efficient, environment-friendly and non-toxic aqueous paint remover according to claim 1, characterized in that: the surfactant is one or a mixture of more of linear alkyl benzene sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate, sodium lauryl sulfate, lauroyl glutamic acid and nonylphenol polyoxyethylene ether.
4. A method for preparing the high-efficiency environment-friendly non-toxic water-based paint remover as claimed in any one of claims 1 to 3, wherein: the method comprises the following steps:
firstly, uniformly mixing N-methyl-2-pyrrolidone and benzyl alcohol, adding liquid paraffin into the mixture, then adding a surfactant and a paint removal accelerator into the mixture, and uniformly stirring to obtain the efficient environment-friendly nontoxic aqueous paint remover.
5. The use method of the high-efficiency environment-friendly non-toxic water-based paint remover as claimed in any one of claims 1 to 3, wherein the paint remover comprises the following steps: the method comprises the following steps:
directly soaking the object to be depainted in the paint remover at normal temperature for 5-60 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910948413.5A CN110819158A (en) | 2019-10-08 | 2019-10-08 | Efficient environment-friendly nontoxic water-based paint remover as well as preparation method and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910948413.5A CN110819158A (en) | 2019-10-08 | 2019-10-08 | Efficient environment-friendly nontoxic water-based paint remover as well as preparation method and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266090A (en) * | 2018-09-07 | 2019-01-25 | 北京固瑞恩科技有限公司 | A kind of environment-friendly type film removal material and preparation method thereof for municipal maintenance project |
| CN112724735A (en) * | 2020-12-25 | 2021-04-30 | 江苏奥首材料科技有限公司 | Water-based airplane paint remover and preparation method thereof |
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| CN1188126A (en) * | 1996-12-06 | 1998-07-22 | 埃勒夫阿托化学有限公司 | Composition for stripping paints, varnishes or lacquers |
| CN1944547A (en) * | 2006-10-11 | 2007-04-11 | 中国化工建设总公司常州涂料化工研究院 | Paint remover and its preparing method and using method |
| CN106118213A (en) * | 2016-09-23 | 2016-11-16 | 重庆理工大学 | A kind of water-based plastic paint stripper and its preparation method and application |
-
2019
- 2019-10-08 CN CN201910948413.5A patent/CN110819158A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188126A (en) * | 1996-12-06 | 1998-07-22 | 埃勒夫阿托化学有限公司 | Composition for stripping paints, varnishes or lacquers |
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