CN116463019A - Quick-drying butanone-resistant waterborne acrylic amino baking varnish and preparation method thereof - Google Patents
Quick-drying butanone-resistant waterborne acrylic amino baking varnish and preparation method thereof Download PDFInfo
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- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000001035 drying Methods 0.000 title claims abstract description 40
- 239000002966 varnish Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000000839 emulsion Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229920003180 amino resin Polymers 0.000 claims abstract description 29
- 239000003377 acid catalyst Substances 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000000080 wetting agent Substances 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000013530 defoamer Substances 0.000 claims abstract description 9
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000003973 paint Substances 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 33
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- -1 hydroxypropyl Chemical group 0.000 description 4
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- 239000011527 polyurethane coating Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002318 adhesion promoter Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- QBDAFARLDLCWAT-UHFFFAOYSA-N 2,3-dihydropyran-6-one Chemical compound O=C1OCCC=C1 QBDAFARLDLCWAT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-O N-dimethylethanolamine Chemical compound C[NH+](C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-O 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000012972 dimethylethanolamine Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical group NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000000007 visual effect Effects 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
- C09D133/00—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 at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
Abstract
The invention belongs to the technical field of baking varnish, and particularly relates to quick-drying butanone-resistant waterborne acrylic amino baking varnish and a preparation method thereof, wherein the quick-drying butanone-resistant waterborne acrylic amino baking varnish is prepared from the following components in parts by weight: 50-60 parts of aqueous acrylic emulsion, 12-15 parts of amino resin, 0.1-0.2 part of defoamer, 0.3-0.8 part of pH regulator, 0.1-0.2 part of wetting agent, 1-3 parts of acid catalyst and 5-8 parts of deionized water, and the preparation method comprises the following steps: adding a defoaming agent and a wetting agent into the aqueous acrylic emulsion, stirring uniformly, adding a pH regulator to adjust the pH to 8-9, adding amino resin, continuously stirring uniformly, adding an acid catalyst, mixing uniformly, filtering, coating on a substrate, drying at 170-185 ℃ for 1-3min after the surface of the substrate is dried. The quick-drying butanone-resistant waterborne acrylic amino baking varnish provided by the invention has good brightness, fullness and compactness, and more importantly, is quick-drying and has excellent butanone resistance.
Description
Technical Field
The invention belongs to the technical field of baking varnish, and particularly relates to quick-drying butanone-resistant waterborne acrylic amino baking varnish and a preparation method thereof.
Background
The baking paint is a paint which is baked and dried to form a film according to a certain temperature, the solvent type paint is mainly used in the market at present, the solvent type paint uses an organic solvent as a diluent, a large amount of organic solvent volatilizes into the air in use, the performance of a coating film is affected, serious air pollution is caused, and therefore, the water-based paint is generated, the water-based paint uses water as the solvent, the toxicity and the irritation in the solvent type paint are avoided, and the environment-friendly property of the paint is rapidly promoted and applied.
In the prior art, part of water-based paint has the property basically similar to that of solvent-based paint, but has more defects, such as being incapable of meeting the requirement of quick surface drying, and being capable of effectively improving the drying speed by baking at a higher temperature; in addition, the butanone wiping resistance of the water-based paint is strictly required in certain special fields, namely, the water-based paint must have good compactness and insolubility in butanone after film formation, and the butanone wiping resistance and soaking resistance can be realized for a long time.
Chinese patent application No. 201710847822.7 proposes a butanone-resistant aqueous polyurethane coating and a film forming method thereof, wherein the aqueous polyurethane coating is prepared from A, B two components; wherein the component A comprises the following raw materials in percentage by weight: 55-65% of aqueous polyurethane resin emulsion, 0.3-0.5% of dispersing agent, 0.1-0.2% of foam inhibitor, 0.1-0.2% of leveling agent, 0.1-0.2% of wetting agent, 1-2% of film forming auxiliary agent, 0.2-0.6% of neutralizer, 0.02-0.1% of thickening agent and the balance of deionized water; the component B is a modified melamine resin cross-linking agent etherified by low formaldehyde; a, B components are mixed according to the weight ratio of 95 percent: 5% mixing, fully stirring in a high-speed stirrer, standing for defoaming, coating a PET substrate with a 30mm wire rod to prepare a film, baking in an oven at 180 ℃ for 1 minute to solidify and crosslink, and cooling at room temperature; the finally obtained coating has excellent solvent properties such as butanone resistance, not only enhances the dry and wet friction fastness of the coating, but also effectively enhances the organic solvent resistance of the polyurethane coating. Chinese patent application No. 201910672187.2 proposes a water-based acrylic amino baking varnish and a preparation method thereof, wherein the water-based acrylic amino baking varnish comprises the following raw material components in percentage by mass: 25-35% of water-based acrylic resin; 3-7% of amino resin; 0.1-0.5% of graphene; 2-4% of alumina; 2-4% of aluminum nitride; 1.5 to 2.1 percent of pH regulator; 10-15% of cosolvent; 0.1-0.5% of defoaming agent; 1-3% of dispersing agent; 0.1-0.5% of wetting agent; 0.1 to 0.5 percent of leveling agent; 1-2% of an adhesion promoter; 30-38% of deionized water, and the obtained water-based acrylic amino baking varnish has high film hardness, good adhesive force, good weather resistance, water resistance, salt water resistance and heat resistance, and can achieve good heat conduction and heat dissipation effects.
However, the prior art has not reported on quick-drying butanone-resistant aqueous acrylic amino baking paints.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides quick-drying butanone-resistant water-based acrylic amino baking paint and a preparation method thereof.
The technical scheme of the invention is realized as follows:
the quick-drying butanone-resistant water-based acrylic amino baking varnish is prepared from the following components in parts by weight: 50-60 parts of aqueous acrylic emulsion, 12-15 parts of amino resin, 0.1-0.2 part of defoamer, 0.3-0.8 part of pH regulator, 0.1-0.2 part of wetting agent, 1-3 parts of acid catalyst and 5-8 parts of deionized water.
The invention is a single-component system, has relatively few components and no forbidden substances, thus the preparation operation is relatively simple, the components are relatively environment-friendly, and the invention has the advantage of cost.
Preferably, the aqueous acrylic emulsion is aqueous acrylic emulsion W5658 produced by Tianjin Guo materials science and technology Co., ltd, the amino resin is any one of M12-80, M16-80 and M12-90 produced by Tianjin Guo materials science and technology Co., ltd, and the acid catalyst is AC-95 produced by Tianjin Guo materials science and technology Co., ltd.
If common acrylic emulsion is selected, the dosage of the acid catalyst is increased for film formation after short-time baking, but the increase of the dosage of the acid catalyst influences the butanone wiping resistance effect of a baking varnish. In the application, the acrylic emulsion is water-based acrylic emulsion W5658 produced by Tianjin Guo materials science and technology, the amino resin is any one of M12-80, M16-80 and M12-90 produced by Tianjin Guo materials science and technology, the catalyst (mainly playing a drying role) is AC-95 produced by Tianjin Guo materials science and technology, and the unexpected discovery is that a paint film with high compactness, excellent butanone resistance, good brightness and smooth hand feeling can be obtained after the three are baked for a short time without adding components such as dispersing agents, flatting agents, film forming auxiliary agents, thickening agents and adhesion promoters.
Further preferably, the defoamer is FM-002 manufactured by Tianjin Guo materials science and technology Co. In the water-based baking varnish system, the paint film is easy to generate bubbles, shrinkage cavities and the like. Because the surface tension of water is large, compared with water dilutable acrylic resin, the aqueous acrylic emulsion is more difficult to foam, and the FM-002 foam-removing performance is best and the paint film has no shrinkage cavity and other problems.
Further preferably, the wetting agent is WT-1866 manufactured by Tianjin Guo materials science and technology Co.
Further preferably, the pH adjustor is N, N-Dimethylethanolamine (DMEA).
The invention also provides a preparation method of the quick-drying butanone-resistant water-based acrylic amino baking paint, which comprises the following operations: adding a defoaming agent and a wetting agent into the aqueous acrylic emulsion, stirring uniformly, adding a pH regulator to adjust the pH to 8-9, adding amino resin, continuously stirring uniformly, adding an acid catalyst, mixing uniformly, filtering, coating on a substrate, and drying at 170-185 ℃ for 1-3min after the surface of the substrate is dried.
Preferably, the filtration is performed with 200 mesh gauze.
Further preferably, the paint film is dried for 1.5min at 180 ℃ after the paint film is dried, the more stable the paint film is adhered with longer drying time, and the paint film is proved by a plurality of tests, and the paint film can meet the requirement by drying for 1.5min at 180 ℃ on the premise of ensuring butanone wiping resistance, which is the operation condition with minimum energy consumption.
The quick-drying butanone-resistant aqueous acrylic amino baking varnish provided by the invention takes aqueous acrylic emulsion W5658 produced by Tianjin Guo materials and any one of M12-80, M16-80 and M12-90 produced by Tianjin Guo materials as main components, and can obtain a compact film layer with good butanone-resistant wiping performance under the drying action of AC-95 produced by Tianjin Guo materials.
Compared with the prior art, the quick-drying butanone-resistant waterborne acrylic amino baking paint provided by the invention has good glossiness, fullness and compactness, a paint film is flat, smooth and good in hand feeling, more importantly, quick-drying and excellent butanone-resistant performance, and can meet the application requirements of certain special fields with strict butanone-resistant wiping performance requirements, such as the fields of glass, ceramics, liquid crystal display screen protection layers, various metal finishing varnishes and the like.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The water-based acrylic emulsion is the main resin of the water-based acrylic amino baking paint, and the performance of the water-based acrylic amino baking paint not only affects the baking time, but also directly affects the performance of a paint film. In the prior art, the aqueous acrylic emulsion has a plurality of brands, different brands of components and different performances, and the requirements of butanone resistance can be met only by theoretically selecting the aqueous acrylic emulsion modified by special monomers to improve the crosslinking density and hardness of a paint film. In the following examples, the aqueous acrylic emulsion W5658 (hydroxyl content 3%) produced by Tianjin Guo materials science and technology Co., ltd was used and reacted with amino resin more easily to form a dense network structure crosslinked, which in turn was conducive to obtaining a paint film having good compactness and chemical resistance.
The amino resin is a curing agent which reacts with the resin at a certain temperature to form a network structure cross-link, and the cross-link is formed by the reaction of the amino resin with functional groups on the acrylic resin and the polycondensation reaction between the amino resin. The amino resin in the market has various types, and the selection of the amino resin not only affects the baking temperature of the paint film, but also affects the compactness and the chemical resistance of the paint film. The amino resin in the following examples is any one of M12-80, M16-80 and M12-90 produced by Tianjin Guogong Material science and technology Co., ltd. And the three groups of amino resins have high crosslinking density, good compatibility and water solubility, are easy to carry out polycondensation reaction with hydroxyl groups in the aqueous acrylic resin, and can also carry out self-polycondensation reaction, so that the film formation is more compact after the amino resins are crosslinked and solidified with the aqueous acrylic emulsion.
In order to meet the requirement of quick drying, a proper drier needs to be added into the system. Acid catalysts such as NACURE 5225 dodecylbenzenesulfonic acid, JIN X49-110 dinonylnaphthalene disulfonic acid, and Zhan Xin CYCAT 296-9 (phosphoric acid modified catalyst, zhan Xin resin (Shanghai) Co., ltd.) are commonly used in the prior art. The catalyst in the following examples was AC-95, which is an amine-blocked p-toluenesulfonic acid produced by Tianjin Guo materials science and technology Co., ltd, and was more excellent in compatibility and stability than the above-mentioned prior art.
In the following examples, the defoamer was FM-002 manufactured by Tianjin Guo materials science and technology Co., ltd., the wetting agent was WT-1866 manufactured by Tianjin Guo materials science and technology Co., ltd., the pH regulator was N, N-dimethylethanolamine, and the pH regulator was N, N-dimethylethanolamine which was 10% by mass of that manufactured by Yangzi petrochemical Basff.
Example 1
A quick-drying butanone-resistant water-based acrylic amino baking varnish is prepared from the following components: 55g of aqueous acrylic emulsion, 13.5g of amino resin, 0.15g of defoamer, 0.5g of pH regulator, 0.15g of wetting agent, 2g of acid catalyst and 6g of deionized water, wherein the amino resin is specifically M12-80 manufactured by Tianjin Guo materials science and technology Co.
The preparation method comprises the following steps: adding a defoaming agent and a wetting agent into the aqueous acrylic emulsion, stirring uniformly, adding a pH regulator to adjust the pH to 8.5, adding amino resin, continuously stirring uniformly, adding an acid catalyst, mixing uniformly, filtering with 200-mesh gauze, coating the mixture on a glass substrate by using a wire rod, drying the glass substrate at 180 ℃ for 1.5min after the surface of the glass substrate is dried, and cooling the glass substrate at room temperature.
Example 2
A quick-drying butanone-resistant water-based acrylic amino baking varnish is prepared from the following components: 50g of aqueous acrylic emulsion, 15g of amino resin, 0.1g of defoamer, 0.8g of pH regulator, 0.1g of wetting agent, 3g of acid catalyst and 5g of deionized water, wherein the amino resin is specifically M16-80 manufactured by Tianjin Guo materials science and technology Co.
The preparation method comprises the following steps: adding a defoaming agent and a wetting agent into the aqueous acrylic emulsion, stirring uniformly, adding a pH regulator to adjust the pH to 9, adding amino resin, continuously stirring uniformly, finally adding an acid catalyst, uniformly mixing, filtering with 200-mesh gauze, coating the mixture on a glass substrate by using a wire rod, drying the glass substrate at 170 ℃ for 3min after the surface of the glass substrate is dried, and cooling the glass substrate at room temperature.
Example 3
A quick-drying butanone-resistant water-based acrylic amino baking varnish is prepared from the following components: 60g of aqueous acrylic emulsion, 12g of amino resin, 0.2g of defoamer, 0.3g of pH regulator, 0.2g of wetting agent, 1g of acid catalyst and 8g of deionized water, wherein the amino resin is specifically M12-90 manufactured by Tianjin Guo materials science and technology Co.
The preparation method comprises the following steps: adding a defoaming agent and a wetting agent into the aqueous acrylic emulsion, stirring uniformly, adding a pH regulator to adjust the pH to 8, adding amino resin, continuously stirring uniformly, finally adding an acid catalyst, uniformly mixing, filtering with 200-mesh gauze, coating the mixture on a glass substrate by using a wire rod, drying the glass substrate at 185 ℃ for 1min after the surface of the glass substrate is dried, and cooling the glass substrate at room temperature.
Comparative example 1
In comparison with example 1, only the aqueous acrylic emulsion W5658 produced by Tianjin Guo materials science and technology Co., ltd was replaced with "Kebang resin KB-7877 aqueous hydroxypropyl emulsion".
Comparative example 2
In comparison with example 1, only the aqueous acrylic emulsion W5658 produced by "Tianjin Guo materials science and technology Co., ltd was replaced with" Guangzhou Yangsheng aqueous hydroxypropyl emulsion AC 6130".
Comparative example 3
In comparison with example 1, only the acid catalyst was replaced with "NACURE 5225 dodecylbenzenesulfonic acid" by "AC-95 produced by Tianjin Guo materials science, inc.
Comparative example 4
In comparison with example 1, only the acid catalyst "AC-95 produced by Tianjin Guo materials science and technology Co., ltd" was replaced with "Zhan Xin CYCAT 296-9".
Comparative example 5
In comparison with example 1, the aqueous acrylic emulsion W5658 produced by Tianjin Guo materials science and technology Co., ltd was replaced with "Kebang resin KB-7877 aqueous hydroxypropyl emulsion", and the acid catalyst AC-95 produced by Tianjin Guo materials science and technology Co., ltd was replaced with "NACURE 5225 dodecylbenzenesulfonic acid".
Comparative example 6
In comparison with example 1, the aqueous acrylic emulsion W5658 produced by Tianjin Guo materials science and technology Co., ltd was replaced with "Guangzhou Yangshen aqueous hydroxypropyl emulsion AC 6130", and the acid catalyst AC-95 produced by Tianjin Guo materials science and technology Co., ltd was replaced with "Zhan Xin CYCAT 296-9".
Blank example 1
In comparison with example 1, only the acid catalyst "AC-95" manufactured by Tianjin Guo materials science and technology Co., ltd was removed.
The appearance of the products obtained in examples 1-3 was smooth and even according to the visual colorimetric observations of GB 9761-2008 paints and varnishes. The hardness of the products obtained in examples 1-3 was measured according to GBT 6739-2006 paint and varnish pencil method and was 3H and above. The adhesion to glass was rated 1 according to the cross-hatch test of GB-T9286-1998 colored and clear lacquer films. According to the conventional test means in the field, the water resistance, acid and alkali resistance, wet heat resistance and salt fog resistance are all qualified.
The products obtained in examples 1 to 3 and comparative examples 1 to 4 (each example and comparative example were provided with 5 replicates each for performance testing) were subjected to butanone rub resistance testing using the same test method as in the prior art (chinese patent application No. 201710847822.7) in the background art, and the results are shown in the following table:
from the test results of examples 1-3 in the above tables, it can be seen that: under the conditions defined by the invention, the aqueous acrylic amino baking varnish with good butanone wiping resistance can be obtained. From the test results of blank example 1 and comparative examples 1 to 6 in the above table, it can be seen that: when no acid catalyst is added or the brand of the acid catalyst and the aqueous acrylic emulsion used in the invention is changed, the butanone wiping resistance of the obtained product is remarkably reduced. The quick-drying butanone-resistant aqueous acrylic amino baking varnish provided by the invention has good acetone wiping resistance after being cured at high temperature, and the performance is the result of the synergistic effect and mutual promotion of the aqueous acrylic emulsion, the amino resin and the acid catalyst selected by the invention, which are indispensable.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The quick-drying butanone-resistant water-based acrylic amino baking varnish is prepared from the following components in parts by weight: 50-60 parts of aqueous acrylic emulsion, 12-15 parts of amino resin, 0.1-0.2 part of defoamer, 0.3-0.8 part of pH regulator, 0.1-0.2 part of wetting agent, 1-3 parts of acid catalyst and 5-8 parts of deionized water.
2. The quick-drying butanone-resistant aqueous acrylic amino baking paint of claim 1, wherein: the aqueous acrylic emulsion is aqueous acrylic emulsion W5658 produced by Tianjin Guo materials science and technology, the amino resin is any one of M12-80, M16-80 and M12-90 produced by Tianjin Guo materials science and technology, and the acid catalyst is AC-95 produced by Tianjin Guo materials science and technology.
3. The quick-drying butanone-resistant aqueous acrylic amino baking paint of claim 2, wherein: the defoamer is FM-002 produced by Tianjin Guo materials science and technology Co.
4. The quick-drying butanone-resistant aqueous acrylic amino baking paint of claim 2, wherein: the wetting agent is WT-1866 produced by Tianjin Guo materials science and technology Co.
5. The quick-drying butanone-resistant aqueous acrylic amino baking paint of claim 2, wherein: the pH regulator is N, N-dimethylethanolamine.
6. A method for preparing the quick-drying butanone-resistant aqueous acrylic amino baking varnish according to any one of claims 1 to 5, which is characterized in that: the operation is as follows: adding a defoaming agent and a wetting agent into the aqueous acrylic emulsion, stirring uniformly, adding a pH regulator to adjust the pH to 8-9, adding amino resin, continuously stirring uniformly, adding an acid catalyst, mixing uniformly, filtering, coating on a substrate, and drying at 170-185 ℃ for 1-3min after the surface of the substrate is dried.
7. The method for preparing the quick-drying butanone-resistant aqueous acrylic amino baking varnish according to claim 6, which is characterized in that: the filtration was performed using 200 mesh gauze.
8. The method for preparing the quick-drying butanone-resistant aqueous acrylic amino baking varnish according to claim 6, which is characterized in that: and after the surface is dried, drying the mixture at 180 ℃ for 1.5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310554697.6A CN116463019A (en) | 2023-05-16 | 2023-05-16 | Quick-drying butanone-resistant waterborne acrylic amino baking varnish and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110256711A (en) * | 2019-06-21 | 2019-09-20 | 浙江兆泽实业有限公司 | A kind of water-fastness film of aqueous quick-drying and preparation method thereof |
| CN110305547A (en) * | 2019-06-14 | 2019-10-08 | 江苏兰陵高分子材料有限公司 | A kind of water soluble acrylic acid amino-stoving varnish of low-temperature bake and preparation method thereof |
| CN111704836A (en) * | 2020-04-29 | 2020-09-25 | 湖北中科博策新材料科技有限公司 | Low-temperature baking water paint and production process thereof |
| CN112574626A (en) * | 2020-11-26 | 2021-03-30 | 清远市实创涂料科技有限公司 | Pure water-based multifunctional coating and preparation method and application thereof |
| CN116063887A (en) * | 2023-01-13 | 2023-05-05 | 浙江尚品飞轿制漆有限公司 | High-weather-resistance and super-wear-resistance electrostatic coating water-based finish paint and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305547A (en) * | 2019-06-14 | 2019-10-08 | 江苏兰陵高分子材料有限公司 | A kind of water soluble acrylic acid amino-stoving varnish of low-temperature bake and preparation method thereof |
| CN110256711A (en) * | 2019-06-21 | 2019-09-20 | 浙江兆泽实业有限公司 | A kind of water-fastness film of aqueous quick-drying and preparation method thereof |
| CN111704836A (en) * | 2020-04-29 | 2020-09-25 | 湖北中科博策新材料科技有限公司 | Low-temperature baking water paint and production process thereof |
| CN112574626A (en) * | 2020-11-26 | 2021-03-30 | 清远市实创涂料科技有限公司 | Pure water-based multifunctional coating and preparation method and application thereof |
| CN116063887A (en) * | 2023-01-13 | 2023-05-05 | 浙江尚品飞轿制漆有限公司 | High-weather-resistance and super-wear-resistance electrostatic coating water-based finish paint and preparation method thereof |
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