CN117025043A - Water-based easy-tearing film coating, preparation method and application - Google Patents
Water-based easy-tearing film coating, preparation method and application Download PDFInfo
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- CN117025043A CN117025043A CN202311296973.XA CN202311296973A CN117025043A CN 117025043 A CN117025043 A CN 117025043A CN 202311296973 A CN202311296973 A CN 202311296973A CN 117025043 A CN117025043 A CN 117025043A
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- water
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- tear film
- easy
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000009501 film coating Methods 0.000 title claims abstract description 39
- 239000007888 film coating Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000839 emulsion Substances 0.000 claims abstract description 33
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 17
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 17
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 17
- 239000008158 vegetable oil Substances 0.000 claims abstract description 17
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 16
- -1 modified acrylic ester Chemical class 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000003973 paint Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 19
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 17
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 15
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 13
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 7
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- BWYYYTVSBPRQCN-UHFFFAOYSA-M sodium;ethenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C=C BWYYYTVSBPRQCN-UHFFFAOYSA-M 0.000 claims description 7
- 239000013530 defoamer Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 239000004526 silane-modified polyether Substances 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 14
- 239000011248 coating agent Substances 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 4
- 239000002612 dispersion medium Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 24
- 238000002474 experimental method Methods 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 241000842783 Orna Species 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000269 nucleophilic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000002834 transmittance Methods 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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1802—C2-(meth)acrylate, e.g. ethyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The application discloses a water-based easy-to-tear film coating, a preparation method and application thereof, which belong to the technical field of coating production, wherein an organosilicon modified acrylic ester emulsion is adopted as a main component of the water-based easy-to-tear film coating, water is adopted as a dispersion medium, and auxiliary materials such as butyl acrylate, vinyl acetate, ethyl acrylate, polyacrylic acid, vegetable oil, water-based color paste, a dispersing agent, a defoaming agent, a film forming auxiliary agent, a leveling agent and the like are added to prepare the water-based easy-to-tear film coating.
Description
Technical Field
The application relates to the technical field of paint production, in particular to a water-based easy-to-tear film paint, a preparation method and application.
Background
The water-based paint adopts pollution-free water to replace organic solvent as a dispersion medium of a paint matrix material, thereby greatly reducing the emission of VOC and greatly reducing the harm of paint industry to the environment and human body. The water-based paint is used as the dominant direction of the future paint industry, has a plurality of excellent performances, and is energy-saving, environment-friendly, green and nontoxic. However, the existing water-based paint is not waterproof, has poor strippable performance, is easy to be brittle after a long time, and is easy to remain during stripping. How to improve the performance of water paint at present, so that the performance of the water paint exceeds that of the traditional paint in various aspects is an important research direction of the water paint at present.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the application is to provide a water-based easy-to-tear film coating which is convenient to use, and the formed protective film has the advantages of good physical property, easy stripping, no residue, good holding viscosity and water resistance and the like; the second purpose of the application is to provide a preparation method of the water-based easy-to-tear film coating, which has simple steps and low cost, and is suitable for large-scale industrial production; the application further aims to provide an application of the water-based easy-tearing film coating, which can effectively protect irregular surfaces of paint spray booths, paint spray hangers, precise instruments and kitchen tiles.
One of the purposes of the application is realized by adopting the following technical scheme:
the water-based easy-tearing film coating comprises the following raw materials in parts by mass: 10-20 parts of butyl acrylate, 10-20 parts of ethyl acrylate, 3.5-7.5 parts of vinyl acetate, 0.5-1.5 parts of vegetable oil, 4-6 parts of water, 0.5-1.5 parts of dispersing agent, 1.5-4.5 parts of defoamer, 32-68 parts of organosilicon modified acrylate emulsion, 0.5-1.5 parts of polyacrylic acid, 0.5-2.5 parts of film forming auxiliary agent and 0.5-1.5 parts of flatting agent; 0.5-1.5 parts of water-based color paste;
the preparation method of the organosilicon modified acrylic ester emulsion comprises the following steps: adding 10-15 ml of 25% sodium vinylsulfonate, 150-300 ml of methacrylic acid, 50-100 ml of butyl acrylate and 1-2 g of ammonium persulfate into 500ml of water, uniformly stirring, heating in a water bath, dropwise adding 3% gamma-methacryloxypropyl trimethoxysilane while stirring, controlling the dropwise adding time within 20min, continuously preserving heat for 30min after the dropwise adding of gamma-methacryloxypropyl trimethoxysilane is finished, and cooling to room temperature to obtain the organosilicon modified acrylate emulsion.
Further, the heating temperature of the water bath is controlled to be 50-80 ℃.
Further, the total dropwise addition volume of the gamma-methacryloxypropyl trimethoxysilane is 2-4 ml.
Further, the dispersant is an acrylic dispersant.
Further, the defoamer is silane modified polyether.
Further, the film forming auxiliary agent is propylene glycol methyl ether and/or dipropylene glycol methyl ether.
Further, the leveling agent is fluorine modified acrylic leveling agent.
The second purpose of the application is realized by adopting the following technical scheme:
the preparation method of the water-based easy-tearing film coating comprises the following steps: respectively adding butyl acrylate, ethyl acrylate, vinyl acetate, vegetable oil, water, a dispersing agent and a defoaming agent into a container, stirring, adding an organosilicon modified acrylic ester emulsion and polyacrylic acid, and uniformly stirring to obtain a mixed solution; and adding a film forming auxiliary agent and a leveling agent into the mixed solution, uniformly stirring, and then adding water-based color paste to obtain the water-based easy-to-tear film coating.
The third purpose of the application is realized by the following technical scheme:
the water-based easy-to-tear film coating can be applied to the protection of surfaces of paint spray booths, paint spray hangers, precise instruments and kitchen tiles.
The beneficial effects are that:
the application adopts the organosilicon modified acrylic ester emulsion as the main component of the water-based easy-tearing film coating, takes water as the dispersion medium, and adds the auxiliary materials such as butyl acrylate, vinyl acetate, ethyl acrylate, polyacrylic acid, vegetable oil, water-based color paste, dispersing agent, defoaming agent, film forming auxiliary agent, leveling agent and the like to prepare the water-based easy-tearing film coating, has the advantages of easy stripping, no residue, good holding viscosity, good water resistance and the like, and the preparation method has simple steps and low cost, is suitable for large-scale industrial production, and is particularly suitable for temporary protection of surfaces of paint spray booths, paint hangers, precise instruments and kitchen tiles;
the organosilicon modified acrylic ester emulsion is obtained by modifying methacrylic acid and butyl acrylate by a special method, and proper amounts of sodium vinylsulfonate, ammonium persulfate and gamma-methacryloxypropyl trimethoxysilane are added to gradually form a three-dimensional silicon-oxygen crosslinked network structure, so that the organosilicon modified acrylic ester emulsion has good water resistance, and the water-based easy-to-tear film coating prepared by taking the organosilicon modified acrylic ester emulsion as a main component has no foaming phenomenon, and can resist the influence of daily soaking on the water-based easy-to-tear film coating;
in addition, the application initiates and promotes the polymerization reaction of butyl acrylate and ethyl acrylate by adding polyacrylic acid and vegetable oil, and further causes the system to generate further crosslinking, thus improving the cohesive force of the water-based easy-to-tear film coating, improving the initial peeling strength, reducing the generation of residual glue, specifically speaking, the double bond in polyacrylic acid absorbs energy to generate active free radicals, the active free radicals react with the double bonds in butyl acrylate and ethyl acrylate to generate more free radicals, thereby causing chain polymerization reaction, while the nucleophilic substances contained in vegetable oil can promote the activity of the double bonds in the chain structure, accelerate the crosslinking solidification, improve the polymer curing internal stress, enable the system to form a gel state with more stable viscosity, and the gel state not only can improve the cohesive force of the water-based easy-to-tear film coating, but also has excellent space position function, can effectively prevent the compound such as water-based color paste from being aggregated again, solve the problem of poor compatibility of the water-based color paste and the system, but also can inhibit the migration aggregation of particles which are not crosslinked to the surface of the system, improve the acting force of the residual substances and the surface of the protected object, thereby improving the initial peeling strength, and reducing the generation of the residual substances;
finally, in order to better control the water-based easy-to-tear film coating adhesive holding capacity and stripping force, a proper amount of vinyl acetate is added into the system, so that the cohesive energy and stripping force of the water-based easy-to-tear film coating are improved, and the prepared water-based easy-to-tear film coating has good stripping force by adjusting the mass ratio of vinyl acetate to organosilicon modified acrylate emulsion, butyl acrylate and ethyl acrylate.
Detailed Description
The present application will be described in further detail with reference to specific examples so as to more clearly understand the present application by those skilled in the art.
The following examples are given for illustration of the application only and are not intended to limit the scope of the application. All other embodiments obtained by those skilled in the art without creative efforts are within the protection scope of the present application based on the specific embodiments of the present application.
In the examples of the present application, all raw material components are commercially available products well known to those skilled in the art unless specified otherwise; in the embodiments of the present application, unless specifically indicated, all technical means used are conventional means well known to those skilled in the art.
The raw material sources are as follows:
25% sodium vinylsulfonate, available from Shandong national chemical Co., ltd;
methacrylic acid and butyl acrylate, both purchased from Shandong Chuang chemical Co., ltd;
ammonium persulfate, available from Bai Gao (Shanghai) Biotech Co., ltd;
gamma-methacryloxypropyl trimethoxysilane, available from jekca chemical, inc. In hangzhou;
ethyl acrylate, available from atactic praecox chemical company, inc;
vinyl acetate, available from Shandong Texi chemical Co., ltd;
SN5040 is used as the dispersing agent, and is purchased from Sannocaceae;
the defoamer is basf 2410AC, purchased from Shenzhen Longdi chemical industry Co., ltd;
polyacrylic acid, available from Shandong Hao chemical Co., ltd
Propylene glycol methyl ether and dipropylene glycol methyl ether, both available from new material, inc. of Santa Clara (Guangzhou);
fluorine modified acrylic leveling agent available from guangdong orna polymer limited;
the water-based color paste is purchased from Shandong XiangRui environmental protection technology Co., ltd;
the remaining reagents are all commercially available as usual.
Example 1
The embodiment provides a water-based easy-tearing film coating, which comprises the following raw materials in parts by mass: 15 parts of butyl acrylate, 15 parts of ethyl acrylate, 5.5 parts of vinyl acetate, 1 part of vegetable oil, 5 parts of water, 1 part of dispersing agent, 3 parts of defoaming agent, 50 parts of organosilicon modified acrylic ester emulsion, 1 part of polyacrylic acid, 1.5 parts of film forming additive (the film forming additive consists of propylene glycol methyl ether and dipropylene glycol methyl ether according to the mass ratio of 1:1) and 1 part of flatting agent; 1 part of water-based color paste;
the preparation method of the organosilicon modified acrylic ester emulsion comprises the following steps: adding 12ml of 25% sodium vinylsulfonate, 220ml of methacrylic acid, 75ml of butyl acrylate and 1.5g of ammonium persulfate into 500ml of water, uniformly stirring, heating to 65 ℃ in a water bath, dropwise adding 3% gamma-methacryloxypropyl trimethoxysilane while stirring, wherein the total dropwise adding volume of the 3% gamma-methacryloxypropyl trimethoxysilane is 3ml, controlling the dropwise adding time within 20min, keeping the temperature for 30min after the dropwise adding of the gamma-methacryloxypropyl trimethoxysilane is finished, and cooling to room temperature to obtain the organosilicon modified acrylate emulsion.
The preparation method of the water-based easy-to-tear film coating comprises the following steps: respectively adding butyl acrylate, ethyl acrylate, vinyl acetate, vegetable oil, water, a dispersing agent and a defoaming agent into a container, stirring, adding an organosilicon modified acrylic ester emulsion and polyacrylic acid, and uniformly stirring to obtain a mixed solution; and adding a film forming auxiliary agent and a leveling agent into the mixed solution, uniformly stirring, and then adding water-based color paste to obtain the water-based easy-to-tear film coating.
Example 2
The embodiment provides a water-based easy-tearing film coating, which comprises the following raw materials in parts by mass: 10 parts of butyl acrylate, 10 parts of ethyl acrylate, 3.5 parts of vinyl acetate, 0.5 part of vegetable oil, 4 parts of water, 0.5 part of dispersing agent, 1.5 parts of defoaming agent, 68 parts of organosilicon modified acrylic ester emulsion, 0.5 part of polyacrylic acid, 0.5 part of propylene glycol methyl riddle and 0.5 part of flatting agent; 0.5 part of water-based color paste;
the preparation method of the organosilicon modified acrylic ester emulsion comprises the following steps: adding 10ml of 25% sodium vinylsulfonate, 150ml of methacrylic acid, 50ml of butyl acrylate and 1g of ammonium persulfate into 500ml of water, uniformly stirring, heating to 50 ℃ in a water bath, dropwise adding 3% gamma-methacryloxypropyl trimethoxysilane while stirring, controlling the dropwise adding time within 20min, keeping the temperature for 30min after the dropwise adding of the gamma-methacryloxypropyl trimethoxysilane is finished, and cooling to room temperature to obtain the organosilicon modified acrylate emulsion.
The preparation method of the water-based easy-tearing film coating is the same as that of the example 1.
Example 3
The embodiment provides a water-based easy-tearing film coating, which comprises the following raw materials in parts by mass: 20 parts of butyl acrylate, 20 parts of ethyl acrylate, 7.5 parts of vinyl acetate, 1.5 parts of vegetable oil, 6 parts of water, 1.5 parts of dispersing agent, 4.5 parts of defoamer, 32 parts of organosilicon modified acrylic ester emulsion, 1.5 parts of polyacrylic acid, 2.5 parts of dipropylene glycol methyl ether and 1.5 parts of flatting agent; 1.5 parts of water-based color paste;
the preparation method of the organosilicon modified acrylic ester emulsion comprises the following steps: adding 15ml of 25% sodium vinylsulfonate, 300ml of methacrylic acid, 100ml of butyl acrylate and 2g of ammonium persulfate into 500ml of water, uniformly stirring, heating to 80 ℃ in a water bath, dropwise adding 3% gamma-methacryloxypropyl trimethoxysilane while stirring, controlling the dropwise adding time within 20min, keeping the temperature for 30min after the dropwise adding of the gamma-methacryloxypropyl trimethoxysilane is finished, and cooling to room temperature to obtain the organosilicon modified acrylate emulsion.
The preparation method of the water-based easy-tearing film coating is the same as that of the example 1.
Comparative example 1
This comparative example is different from example 1 in that an acrylic emulsion was substituted for the silicone-modified acrylate emulsion in example 1, and the other components and experimental procedure were the same as in example 1.
Comparative example 2
This comparative example differs from example 1 in that the silicone-modified acrylate emulsion in example 1 was replaced with an aqueous polyurethane, and the other components and experimental procedures were the same as in example 1.
Comparative example 3
This comparative example differs from example 1 in that in the step of producing the silicone modified acrylate emulsion, 3% by mass of gamma-methacryloxypropyl trimethoxysilane was not added.
Comparative example 4
This comparative example was different from example 1 in that no polyacrylic acid was added, and the other components and experimental procedure were the same as in example 1.
Comparative example 5
This comparative example was different from example 1 in that no vegetable oil was added, and the other components and experimental procedure were the same as in example 1.
Comparative example 6
This comparative example was different from example 1 in that glycerin was used instead of the vegetable oil in example 1, and the other components and experimental procedure were the same as in example 1.
Comparative example 7
This comparative example was different from example 1 in that no vinyl acetate was added, and the other components and experimental procedure were the same as in example 1.
Performance testing
1. Adhesion test
The testing method comprises the following steps: the paints of examples 1 to 3 and comparative examples 1 to 7 were respectively applied to the surfaces of a paint spray booth, a paint spray rack, a precision instrument and a kitchen tile, each having an area of 5cm×5cm, the thickness of the paint was kept between 0.10 and 0.20mm, and the paint was left at room temperature for 48 hours, and after performing a manual peeling test, the residue of each group of paint was recorded, as shown in table 1.
Table 1 results of the adhesion test for each group of coatings
2. The paints of examples 1 to 3 and comparative examples 1 to 7 were applied to the surfaces of kitchen tiles and left at normal temperature for 48 hours, and then were subjected to water resistance, tear strength, tensile strength, peel strength, maximum elongation at break, transparency, gloss and other index measurements, respectively, wherein the water resistance was measured by the method of GB/T1733-1993; the detection method of the tearing strength refers to GB/T529; the method for detecting the peeling strength refers to GB/T2792; the tensile strength detection method refers to GB/T528; maximum elongation at break GB/T528; the light transmittance detection method refers to GB/T1721-1989; the gloss detection method is referred to GB/T9754-2007. The test results are shown in Table 2.
TABLE 2 coating Performance test results
When evaluating the performance of the water-based paint, the tensile strength is required to be kept within the range of not less than 6MPA as much as possible, the 90-degree peeling strength is required to be kept within the range of 10-50N/mm as much as possible, the maximum elongation at break is controlled within the range of 100-300%, the water-based paint can be ensured to have better peeling property, the tearing strength and the tensile strength are required to be kept at higher levels, the water-based peeling paint is not easy to tear or break in the peeling process, the elongation at break and the 90-degree peeling strength are required to be ensured within a certain range, the peeling strength is too high to cause the phenomenon of difficult peeling, and the peeling strength is too low to cause the adhesive force to be too low; too high elongation at break also affects the strength of the coating, making it difficult to meet the requirements for the coating strength, and too low elongation at break also tends to cause incomplete peeling.
As can be seen from table 1, the paints of examples 1 to 3 were applied to the surfaces of the spray booth, the spray hanger, the precision instrument and the kitchen tile respectively, and the paints of comparative examples 1 to 7 were peeled off entirely without breaking the coating, whereas the paints of comparative examples 1 to 7 were applied to the surfaces of the spray booth, the spray hanger, the precision instrument and the kitchen tile respectively, and they were different from each other in peeling off, which may be related to the lack of a certain component in comparative examples 1 to 7 and also to the material of the object to be sprayed.
As can be seen from table 2, the paints of examples 1 to 3 are excellent in all of the indexes such as water resistance, tear strength, tensile strength, peel strength, maximum elongation at break, transparency, gloss and the like, and the three groups of paints are good in transparency, high in gloss and good in water resistance, can be peeled off easily all at once after being torn from a place, and are completely peeled off without residue. However, in comparative examples 1 to 3, poor water resistance was observed, the coating film peeled off and had some adhesion at peeling, and the transparency and gloss were reduced as compared with examples, indicating that the silicone modified acrylate emulsion had a great influence on the properties of the coating, especially the water resistance, and that the system could not form a silicone three-dimensional crosslinked network structure, resulting in poor water resistance of the prepared coating, regardless of whether the silicone modified acrylate emulsion was replaced with an acrylic emulsion or the silicone modified acrylate emulsion was replaced with an aqueous polyurethane, or in the step of preparing the silicone modified acrylate emulsion, 3% by mass of γ -methacryloxypropyl trimethoxysilane was not added. From the data in table 2, it can be seen that, although the coating film peeling phenomenon does not occur in comparative examples 4 to 6, the indexes such as tear strength, tensile strength, peeling strength, maximum elongation at break, transparency and gloss are all significantly reduced compared with the examples, which indicates that the system cannot form a stable gel state when polyacrylic acid or vegetable oil is absent in the system, so that the compatibility of the aqueous color paste and the system is poor, and migration and aggregation of other particles which do not participate in crosslinking to the surface layer of the system cannot be inhibited, so that the coating has poor transparency, no gloss and residues during peeling. The four indexes of tear strength, tensile strength, peel strength and maximum elongation at break in comparative example 7 are all worse than those in comparative examples 4 to 6, but the two indexes of transparency and gloss are better than those in comparative examples 4 to 6, and the addition of polyacrylic acid and vegetable oil to the system is proved to be beneficial to improving the transparency and gloss of the coating from the reverse side, whereas the lack of vinyl acetate in the system has a greater influence on the strippability of the coating than the absence of polyacrylic acid and vegetable oil, whereas the addition of a proper amount of vinyl acetate is beneficial to improving the cohesive energy and the stripping force of the coating.
The above is merely an embodiment of the present application, and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present application, should be included in the scope of the claims of the present application.
Claims (9)
1. The water-based easy-to-tear film coating is characterized by comprising the following raw materials in parts by mass:
10-20 parts of butyl acrylate, 10-20 parts of ethyl acrylate, 3.5-7.5 parts of vinyl acetate, 0.5-1.5 parts of vegetable oil, 4-6 parts of water, 0.5-1.5 parts of dispersing agent, 1.5-4.5 parts of defoamer, 32-68 parts of organosilicon modified acrylate emulsion, 0.5-1.5 parts of polyacrylic acid, 0.5-2.5 parts of film forming auxiliary agent and 0.5-1.5 parts of flatting agent; 0.5-1.5 parts of water-based color paste;
the preparation method of the organosilicon modified acrylic ester emulsion comprises the following steps: adding 10-15 ml of 25% sodium vinylsulfonate, 150-300 ml of methacrylic acid, 50-100 ml of butyl acrylate and 1-2 g of ammonium persulfate into 500ml of water, uniformly stirring, heating in a water bath, dropwise adding 3% gamma-methacryloxypropyl trimethoxysilane while stirring, controlling the dropwise adding time within 20min, continuously preserving heat for 30min after the dropwise adding of gamma-methacryloxypropyl trimethoxysilane is finished, and cooling to room temperature to obtain the organosilicon modified acrylate emulsion.
2. The aqueous easy-to-tear film coating according to claim 1, wherein the water bath heating temperature is controlled to be 50-80 ℃.
3. The aqueous easy-to-tear film coating according to claim 1, wherein the total volume of the gamma-methacryloxypropyl trimethoxysilane drops is 2-4 ml.
4. The aqueous easy-to-tear film coating of claim 1, wherein the dispersant is an acrylate dispersant.
5. The aqueous easy tear film coating of claim 1 wherein the defoamer is a silane modified polyether.
6. The aqueous easy-to-tear film coating of claim 1, wherein the film forming aid is propylene glycol methyl ether and/or dipropylene glycol methyl ether.
7. The aqueous easy-to-tear film coating of claim 1, wherein the leveling agent is a fluorine modified acrylic leveling agent.
8. The method for producing an aqueous easy-to-tear film coating according to any one of claims 1 to 7, comprising the steps of: respectively adding butyl acrylate, ethyl acrylate, vinyl acetate, vegetable oil, water, a dispersing agent and a defoaming agent into a container, stirring, adding an organosilicon modified acrylic ester emulsion and polyacrylic acid, and uniformly stirring to obtain a mixed solution; and adding a film forming auxiliary agent and a leveling agent into the mixed solution, uniformly stirring, and then adding water-based color paste to obtain the water-based easy-to-tear film coating.
9. The use of the aqueous easy-to-tear film coating according to any one of claims 1 to 7, characterized in that the aqueous easy-to-tear film coating is applied to the protection of surfaces of paint spray booths, paint spray hangers, precision instruments, kitchen tiles.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594380A (en) * | 2004-07-09 | 2005-03-16 | 中山大学 | Process for preparing silicon acrylic latex |
| CN102719125A (en) * | 2012-06-12 | 2012-10-10 | 天长市巨龙车船涂料有限公司 | Anti-sticking water-based coating |
| CN114015307A (en) * | 2021-12-01 | 2022-02-08 | 广东百屋乐建筑科技有限公司 | Single-component water-based acrylic acid strippable paint and preparation method and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594380A (en) * | 2004-07-09 | 2005-03-16 | 中山大学 | Process for preparing silicon acrylic latex |
| CN102719125A (en) * | 2012-06-12 | 2012-10-10 | 天长市巨龙车船涂料有限公司 | Anti-sticking water-based coating |
| CN114015307A (en) * | 2021-12-01 | 2022-02-08 | 广东百屋乐建筑科技有限公司 | Single-component water-based acrylic acid strippable paint and preparation method and application thereof |
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