CN116875166A - Water-based plastic paint and preparation method thereof - Google Patents
Water-based plastic paint and preparation method thereof Download PDFInfo
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- CN116875166A CN116875166A CN202311024963.0A CN202311024963A CN116875166A CN 116875166 A CN116875166 A CN 116875166A CN 202311024963 A CN202311024963 A CN 202311024963A CN 116875166 A CN116875166 A CN 116875166A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 239000003973 paint Substances 0.000 title claims abstract description 95
- 229920003023 plastic Polymers 0.000 title claims abstract description 83
- 239000004033 plastic Substances 0.000 title claims abstract description 83
- 238000002360 preparation method Methods 0.000 title abstract description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 60
- 239000000843 powder Substances 0.000 claims description 56
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical class O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 47
- 239000006184 cosolvent Substances 0.000 claims description 34
- 239000002270 dispersing agent Substances 0.000 claims description 31
- 239000011521 glass Substances 0.000 claims description 30
- 239000000080 wetting agent Substances 0.000 claims description 29
- 239000002562 thickening agent Substances 0.000 claims description 28
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 23
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 23
- 239000002516 radical scavenger Substances 0.000 claims description 23
- 239000004925 Acrylic resin Substances 0.000 claims description 22
- 229920000178 Acrylic resin Polymers 0.000 claims description 22
- 230000003449 preventive effect Effects 0.000 claims description 20
- 238000000518 rheometry Methods 0.000 claims description 20
- 239000002518 antifoaming agent Substances 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- -1 alcohol ester Chemical class 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 239000011362 coarse particle Substances 0.000 claims description 2
- 239000010419 fine particle Substances 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical group 0.000 claims description 2
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical group O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000005282 brightening Methods 0.000 claims 2
- 238000005201 scrubbing Methods 0.000 abstract description 8
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 abstract description 7
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000005562 fading Methods 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 4
- 238000010924 continuous production Methods 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 description 15
- 239000013530 defoamer Substances 0.000 description 14
- 238000003756 stirring Methods 0.000 description 13
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000000654 additive Substances 0.000 description 10
- 230000000996 additive effect Effects 0.000 description 10
- 238000001914 filtration Methods 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229910014314 BYK190 Inorganic materials 0.000 description 8
- 239000003112 inhibitor Substances 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000003678 scratch resistant effect Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000002671 adjuvant Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000006254 rheological additive Substances 0.000 description 3
- 241000282693 Cercopithecidae Species 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 description 1
- 238000004131 Bayer process Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000012738 dissolution medium Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- QMYDVDBERNLWKB-UHFFFAOYSA-N propane-1,2-diol;hydrate Chemical compound O.CC(O)CO QMYDVDBERNLWKB-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2355/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2323/00 - C08J2353/00
- C08J2355/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The application relates to the technical field of paint, in particular to water-based plastic paint and a preparation method thereof. The application provides a water-based plastic paint and a preparation method thereof, wherein the water-based plastic paint provided by the application is a water-based plastic paint with full matte, high scratch resistance and high alcohol scratch resistance, the paint film gloss can reach 0 ℃, the scratch resistance is very good, the solvent resistance is good, the solvent scrubbing resistance of the paint film of the colored paint is not fading, and the water-based plastic paint is very suitable for being applied to medical appliances, in particular to medical appliances of an ABS (Acrylonitrile butadiene styrene) substrate. The preparation method of the water-based full-matte water-based plastic paint with high scratch resistance and high alcohol rub resistance has the advantages of simple operation and continuous production. Tests show that the water-based plastic paint provided by the application has the advantages of 0 degree of gloss, good adhesive force, good scratch resistance, no bright mark and no fading after scratch, and the alcohol scratch resistance times are as high as 188 times, and are obviously better than that of commercial plastic paint.
Description
Technical Field
The application relates to the technical field of paint, in particular to water-based plastic paint and a preparation method thereof.
Background
With the increasing awareness of the whole society of environmental protection, it is imperative to replace paint with environmental protection water paint. The water paint is a paint using water as a dissolution medium, has the advantages of no toxicity, environmental protection, no smell, few volatile matters, no combustion, no explosion and the like, and is a green environment-friendly product which does not use an organic solvent as a diluent. Meanwhile, along with the maturity of water-based technology and the national requirement on environmental protection, more and more electronic medical plastic products are added into the era of water-based coating, and the times are as small as medical equipment such as electronic sphygmomanometer shells, nucleic acid machine shells, dental medical tables, respirators and the like. Therefore, more and more enterprises require the adoption of water-based paint to meet the environmental requirements of clients and themselves.
The medical device housing has a hard requirement of good scratch resistance and alcohol scrubbing resistance, because medical devices are often sterilized with alcohol. However, the water-based plastic paint on the market has various defects such as scratch resistance, alcohol scrubbing resistance, 60-degree baking after spraying, poorer scratch resistance when the gloss is dumb, and influence on the application of products. Therefore, the water-based matte coating for the plastic, which has high scratch resistance and alcohol scratch resistance and does not need baking, is developed and becomes a problem to be solved urgently by manufacturers with prospective awareness in the medical instrument industry.
Disclosure of Invention
In view of the above, the technical problem to be solved by the application is to provide the water-based plastic paint and the preparation method thereof, wherein the water-based plastic paint provided by the application has high alcohol-scratch resistance and scratch resistance, and the luster is full-matte.
The application provides a water-based plastic paint, which comprises a component A and a component B;
the component A comprises:
hydroxy acrylic resin: 50-80 parts by weight;
modified glass powder: 3-10 parts by weight;
wax powder: 0.5 to 2 parts by weight;
the component B comprises:
matte hydrophilically modified hexamethylene diisocyanate curing agent: 25-45 parts by weight;
light hydrophilically modified hexamethylene diisocyanate curing agent: 25-40 parts by weight;
propylene glycol methyl ether acetate: 15-40 parts by weight.
The water-based plastic paint provided by the application comprises a component A and a component B; the weight ratio of the component A to the component B is 100:5 to 10, preferably 100: 7-8. The inventor creatively discovers that the full-matte water-based plastic paint with high alcohol-scratch resistance can be obtained by combining the hydroxyl acrylic resin, the modified glass powder and the wax powder and matching with a certain proportion of matte and glossy hydrophilic modified hexamethylene diisocyanate curing agent.
The component A in the aqueous plastic paint provided by the application comprises 50-80 parts by weight of hydroxy acrylic resin. In certain embodiments of the present application, the component A preferably comprises 60 to 80 parts by weight, more preferably 65 to 75 parts by weight, and most preferably 68 to 73 parts by weight of the hydroxy acrylic resin. In one embodiment, the component A includes 50 to 60 parts by weight of a hydroxy acrylic resin. The hydroxy acrylic resin is one of the aqueous resins, and is most preferably phenylpropenoid hydroxy acrylic resin in order to improve the application effect of the product. The specific source of the hydroxyacrylic resin is not particularly limited in the present application, and those skilled in the art can prepare or purchase it according to conventional methods. In one embodiment, the hydroxy acrylic resin is preferably a commercially available aqueous hydroxy acrylic emulsion having a trade name 381, preferably 39-41% solids and 1.1% hydroxyl content, manufactured by Gemini.
The component A in the water-based plastic paint provided by the application comprises 3-10 parts by weight of modified glass powder. In certain embodiments of the application, the component A preferably comprises 4 to 9 parts by weight of the modified glass frit, more preferably 5 to 8 parts by weight, and most preferably 6 to 7 parts by weight. The modified glass powder not only improves the hardness and scratch resistance, but also plays a role in extinction. The specific source of the modified glass frit is not particularly limited in the present application, and may be prepared or purchased according to a conventional method by those skilled in the art. In some embodiments, the modified glass frit of the present application has a mesh size of 4000 to 6000 mesh. In one embodiment, the modified glass frit is preferably a monkey san 5000 mesh modified glass frit; in particular to modified glass powder with HX5000 as a brand of monkey holy chemical industry production.
The component A in the water-based plastic paint provided by the application comprises 0.5-2 parts by weight of wax powder. In certain embodiments of the present application, the component A preferably comprises 0.7 to 1.8 parts by weight of wax powder, most preferably 1 to 1.5 parts by weight. The wax powder has hardness greater than H, can play a role in extinction besides improving scratch resistance, and is preferably at least one of 2382 wax powder or 2093 wax powder. The specific source of the wax powder is not particularly limited in the present application, and may be prepared or purchased according to conventional methods by those skilled in the art. In one embodiment, the wax powder is preferably at least one of 2382 wax powder or 2093 wax powder of the chemical industry of Dragon sea, jiangxi province.
The component B in the water-based plastic paint provided by the application comprises 25-45 parts by weight of matte hydrophilic modified hexamethylene diisocyanate curing agent. In certain embodiments of the present application, the component B preferably comprises 30 to 40 parts by weight, most preferably 32 to 38 parts by weight, of the matte hydrophilically modified hexamethylene diisocyanate curing agent. The matte hydrophilic modified hexamethylene diisocyanate curing agent is selected from coarse particle size matting curing agents, has the particle size range of 800-1000 microns, is emulsified in a water phase, and is mainly used as a cross-linking agent of a water-based hydroxyl polyol base material, and is preferably 2547 curing agent. The specific source of the matte hydrophilically modified hexamethylene diisocyanate curing agent is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In one embodiment, the matte hydrophilically modified hexamethylene diisocyanate curing agent of the present application is preferably a matte hydrophilically modified hexamethylene diisocyanate curing agent manufactured by bayer company under the trade designation 2547.
The component B in the water-based plastic paint provided by the application comprises 25-40 parts by weight of a light hydrophilic modified hexamethylene diisocyanate curing agent. In certain embodiments of the present application, the component B preferably comprises 27 to 38 parts by weight, most preferably 30 to 35 parts by weight, of the gloss hydrophilically modified hexamethylene diisocyanate curing agent. The light hydrophilic modified hexamethylene diisocyanate curing agent is a curing agent which can be used for water-based paint, is selected from fine particle size light curing agents, has a particle size range of 150-200 microns, is particularly a cross-linking agent suitable for a water-based system, and can form a high-gloss low-fog film, preferably 2655 curing agent. The specific source of the light hydrophilically modified hexamethylene diisocyanate curing agent is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In one embodiment, the gloss hydrophilically modified hexamethylene diisocyanate curing agent of the present application is preferably a gloss hydrophilically modified hexamethylene diisocyanate curing agent manufactured by bayer under the trade designation 2655.
The component B in the water-based plastic paint provided by the application comprises 15-40 parts by weight of propylene glycol methyl ether acetate. In certain embodiments of the present application, component B preferably comprises propylene glycol methyl ether acetate in an amount of 20 to 35 parts by weight, and most preferably comprises 25 to 30 parts by weight. The propylene glycol methyl ether acetate (PMA) of the present application is not particularly limited and may be prepared or purchased according to a conventional method by those skilled in the art, and is preferably PMA manufactured by dow chemical company.
In the aqueous plastic paint provided by the application, the component A further comprises:
cosolvent: 3 to 6 parts by weight;
wetting agent: 0.1 to 0.5 weight portion;
dispersing agent: 0.1 to 1 part by weight;
defoaming agent: 0.1 to 0.5 weight portion;
and (3) a thickening agent: 0.2 to 0.6 weight portion;
mildew preventive: 0.1 to 0.3 weight portion;
rheology aid: 0.1 to 0.4 weight portion;
color paste: 0 to 35 parts by weight;
and water: 0 to 10 parts by weight;
the component B further comprises: water scavenger: 0.5 to 2 parts by weight.
The component A in the aqueous plastic paint provided by the application also comprises 3-6 parts by weight of cosolvent. In certain embodiments of the present application, the component A preferably comprises 3.5 to 5.5 parts by weight, most preferably 4 to 5 parts by weight, of the co-solvent. In one embodiment, the component A includes 3 to 4 parts of a cosolvent. The cosolvent is selected from at least one of alcohol ester cosolvent, alcohol ether cosolvent or alcohol cosolvent; the specific source of the co-solvent is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In certain embodiments of the present application, the co-solvent is selected from one or more of texanol, dipropylene glycol butyl ether, dipropylene glycol methyl ether, or propylene glycol, more preferably texanol or dipropylene glycol butyl ether. In one embodiment, the co-solvent is selected from Texanol, specifically the co-solvent available under the trademark Texanol from Eastman company. In one embodiment, the co-solvent is selected from dipropylene glycol butyl ether, specifically co-solvent under the trademark DPnB manufactured by Dow Corp.
The component A in the water-based plastic paint provided by the application also comprises 0.1-0.5 part by weight of wetting agent. In certain embodiments of the present application, the component A preferably comprises 0.2 to 0.4 parts by weight of wetting agent, most preferably 0.25 to 0.35 parts by weight. The wetting agent is selected from siloxane type gemini structure wetting agents; the specific source of the wetting agent is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to a conventional method. In certain embodiments of the application, the wetting agent is selected from tego wet 4100 or tego wet 270 wetting agents. In one embodiment, the wetting agent is selected from wetting agents manufactured by Digao under the trademark tego wet 4100.
The component A in the water-based plastic paint provided by the application also comprises 0.1-1 part by weight of dispersing agent. In certain embodiments of the present application, the component A preferably comprises 0.3 to 0.8 parts by weight of dispersant, more preferably 0.5 to 0.8 parts by weight, and most preferably 0.6 to 0.7 parts by weight. The dispersant of the application is selected from polymeric dispersants; the present application is not particularly limited to the specific source of the dispersant, and one skilled in the art can prepare or purchase the dispersant according to a conventional method. In certain embodiments of the present application, the dispersant is selected from at least one of a BYK190 dispersant or a tego Dispers 735W dispersant; specifically, the dispersant is preferably at least one selected from a dispersant having a brand of BYK190 manufactured by the company pick, germany and a dispersant having a brand of tego Dispers 735W manufactured by the company dygao.
The component A in the water-based plastic paint provided by the application also comprises 0.1-0.5 part by weight of defoamer. In certain embodiments of the present application, the component A preferably comprises from 0.2 to 0.4 parts by weight of an antifoaming agent, most preferably from 0.25 to 0.35 parts by weight. The defoamer is at least one of organosilicon defoamer or polyether siloxane defoamer; the specific source of the defoamer is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In certain embodiments of the present application, the defoamer is selected from at least one of a BYK028 defoamer or a tego airex902W defoamer; specifically, the antifoaming agent is preferably selected from the antifoaming agent of BYK028 manufactured by the company pich germany or the antifoaming agent of tego airex902W manufactured by the company dygao. Wherein BYK028 is an organosilicon defoamer produced by Pick chemical production in Germany, and is light gray liquid, and the effective component is 100%; tego airex902W is a high-efficiency deaerator produced by Digao, germany, and is particularly effective in eliminating microbubbles.
The component A in the water-based plastic paint provided by the application also comprises 0.2-0.6 part by weight of thickener. In certain embodiments of the present application, the component A preferably comprises 0.3 to 0.5 parts by weight of the thickener, most preferably 0.35 to 0.45 parts by weight. The thickener is selected from polyurethane associative thickeners; the specific source of the thickener is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In certain embodiments of the application, the thickener is selected from at least one of XS83 or Pur 65; specifically, the thickener is preferably at least one selected from a thickener with a brand of XS83 produced by the company of ordinary high-tech auxiliary, or a thickener with a brand of Pur65 produced by Ming Ling, germany.
The component A in the aqueous plastic paint provided by the application also comprises 0.1-0.3 part by weight of mildew inhibitor. In certain embodiments of the application, the component A preferably comprises from 0.15 to 0.25 parts by weight, most preferably from 0.18 to 0.22 parts by weight, of a mildewproof agent. The mildew preventive is selected from isothiazolinone in-tank mildew preventive; the specific source of the mildew preventive is not particularly limited in the present application, and may be prepared or purchased according to a conventional method by those skilled in the art. In certain embodiments of the present application, the mildew inhibitor is selected from the group consisting of BEK-200L mildew inhibitor or the KATHON-LX300 mildew inhibitor of Dow chemical. In one embodiment, the mildew inhibitor is preferably selected from mildew inhibitors of BEK-200L, manufactured by Guanzhong Zhou chemical industry.
The component A in the water-based plastic paint provided by the application also comprises 0.1-0.4 part by weight of rheological additive. In certain embodiments of the present application, the component A preferably comprises 0.2 to 0.3 parts by weight of a rheology aid, most preferably 0.22 to 0.28 parts by weight. The rheological auxiliary agent is selected from polyurethane association type rheological auxiliary agents; the particular source of the rheology aid is not particularly limited in this application and may be prepared or purchased by one skilled in the art according to conventional methods. In certain embodiments of the application, the rheology aid is selected from at least one of PUR85 rheology aid or coapsur 2025 rheology aid. In one embodiment, the rheology aid is preferably selected from the rheology aid of the brand PUR85 manufactured by Ming Ling, germany or the rheology aid of the brand coapsur 2025 manufactured by Gaotai aid.
The component A in the water-based plastic paint provided by the application also comprises 0-35 parts by weight of color paste. In certain embodiments of the present application, the component A preferably comprises 15 to 23 parts by weight of color paste, and most preferably comprises 18 to 21 parts by weight. In one embodiment, the component A comprises 25 to 30 parts by weight of color paste. The color paste can be selected according to actual requirements; in one embodiment, the color paste of the present application is selected from white color paste. In one embodiment, the color paste is selected from BEK1008-SI.
The component A in the water-based plastic paint provided by the application also comprises 0-10 parts by weight of water. The water is not particularly limited in the present application, and the present application is preferably deionized water according to the concept well known to those skilled in the art.
The component B in the water-based plastic paint provided by the application also comprises 0.5-2 parts by weight of a water removing agent. In certain embodiments of the present application, the component B preferably comprises 0.8 to 1.5 parts by weight of the water scavenger, most preferably 1 to 1.3 parts by weight. The water scavenger according to the present application is not particularly limited, and may be any water scavenger for isocyanate known to those skilled in the art. In some embodiments, the water scavenger is selected from isocyanate-type water scavengers. The specific source of the water scavenger is not particularly limited in the present application, and may be prepared or purchased according to a conventional method by those skilled in the art. In one embodiment, the water scavenger is preferably selected from the group consisting of an Additive Ti water scavenger or INCOZOL 2. In one embodiment, the water scavenger is preferably selected from the group consisting of the water scavengers of the bayer process under the designation Additive Ti.
In certain embodiments of the present application, the component a of the aqueous plastic paint provided by the present application comprises: hydroxy acrylic resin: 50-60 parts by weight; cosolvent: 3 to 4 parts by weight; wetting agent: 0.25 to 0.35 weight portion; dispersing agent: 0.3 to 0.8 weight portion; defoaming agent: 0.25 to 0.35 weight portion; and (3) a thickening agent: 0.35 to 0.45 weight portion; mildew preventive: 0.18 to 0.22 weight portion; rheology aid: 0.2 to 0.3 weight portion; color paste: 25-30 parts by weight; modified glass powder: 5-8 parts by weight; wax powder: 1 to 1.5 parts by weight; and water: 1 to 2 parts by weight; the component B comprises: matte hydrophilically modified hexamethylene diisocyanate curing agent: 30-40 parts by weight; light hydrophilically modified hexamethylene diisocyanate curing agent: 30-35 parts by weight; propylene glycol methyl ether acetate: 25-30 parts by weight; and a water scavenger: 1 to 1.3 parts by weight.
In one embodiment, the aqueous plastic paint provided by the application comprises the following components in percentage by weight: component a and component B of 8; the component A comprises: hydroxy acrylic resin: 60 parts by weight; cosolvent: 3 parts by weight; wetting agent: 0.3 parts by weight; dispersing agent: 0.3 parts by weight; defoaming agent: 0.3 parts by weight; and (3) a thickening agent: 0.4 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.3 parts by weight; color paste: 25 parts by weight; modified glass powder: 6 parts by weight; wax powder: 2 parts by weight; and water: 2 parts by weight; the component B comprises: matte hydrophilically modified hexamethylene diisocyanate curing agent: 40 parts by weight; light hydrophilically modified hexamethylene diisocyanate curing agent: 35 parts by weight; propylene glycol methyl ether acetate: 25 parts by weight; and a water scavenger: 1 part by weight.
In one embodiment, the aqueous plastic paint provided by the application comprises the following components in percentage by weight: 7, component a and component B; the component A comprises: hydroxy acrylic resin: 53 parts by weight; cosolvent: 4 parts by weight; wetting agent: 0.3 parts by weight; dispersing agent: 0.8 parts by weight; defoaming agent: 0.3 parts by weight; and (3) a thickening agent: 0.5 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.3 parts by weight; color paste: 30 parts by weight; modified glass powder: 7 parts by weight; wax powder: 2 parts by weight; and water: 1 part by weight; the component B comprises: matte hydrophilically modified hexamethylene diisocyanate curing agent: 40 parts by weight; light hydrophilically modified hexamethylene diisocyanate curing agent: 35 parts by weight; propylene glycol methyl ether acetate: 25 parts by weight; and a water scavenger: 1 part by weight.
The application provides a preparation method of the water-based plastic paint, which comprises the following steps: and mixing the component A and the component B to obtain the water-based plastic paint. In some embodiments of the present application, the preparation method of the aqueous plastic paint provided by the present application includes: the preparation method comprises the steps of mixing hydroxyl acrylic resin, a cosolvent, a wetting agent, a dispersing agent, a defoaming agent, a thickening agent, a mildew preventive, a rheological additive, color paste, modified glass powder, wax powder, water, matte hydrophilic modified hexamethylene diisocyanate curing agent, a gloss hydrophilic modified hexamethylene diisocyanate curing agent, propylene glycol methyl ether acetate and a water removing agent to obtain the water-based plastic paint.
The preparation method of the component A comprises the following steps: mixing the hydroxy acrylic resin, the cosolvent, the wetting agent, the dispersing agent, the defoaming agent, the thickening agent, the mildew preventive, the rheological additive, the color paste, the modified glass powder, the wax powder and the water to obtain the component A. Specifically, the application firstly mixes the filtered hydroxy acrylic resin and the defoamer, and carries out the first dispersion for more than 25 minutes at the rotating speed of 1500 r/min-1800 r/min; after dispersing until no shrinkage cavity exists, reducing the rotating speed to 800-1000 r/min for second dispersing; and then mixing and stirring the mixture with a cosolvent, a dispersing agent, modified glass powder, wax powder, a wetting agent, a mildew inhibitor, a rheological aid, color paste and a thickening agent to obtain the component A. In one embodiment, filtering the hydroxy acrylic resin into a clean container by a 400-mesh filter screen, adding an antifoaming agent, and adjusting the disperser to 1500-1800 r/min for first dispersion for more than 25min; spraying two drops of wetting agent into a sampling drop to observe whether the appearance of a coating film is shrinkage cavity or not, and adjusting the rotating speed of a dispersing machine to 800-1000 r/min for second dispersion after no shrinkage cavity is confirmed; slowly adding cosolvent, dispersant, modified glass powder and wax powder into the mixture, controlling the rotating speed to be 800-1000 r/min, stirring the mixture for 15 minutes, sequentially adding wetting agent, mildew inhibitor, rheological auxiliary agent, color paste and thickener into the mixture, stirring the mixture for 30 minutes, and filtering the mixture by a 400-mesh filter screen after the mixture is detected to be qualified, thus obtaining the component A. The hydroxyl acrylic resin, the cosolvent, the wetting agent, the dispersing agent, the defoamer, the thickener, the mildew preventive, the rheological aid, the color paste, the modified glass powder, the wax powder and the water are the same as the above, and no repeated description is provided.
The preparation method of the component B comprises the following steps: and mixing the matte hydrophilic modified hexamethylene diisocyanate curing agent, the bright hydrophilic modified hexamethylene diisocyanate curing agent, propylene glycol methyl ether acetate and the water removing agent to obtain the component B. In one embodiment, the application mixes and stirs matte hydrophilic modified hexamethylene diisocyanate curing agent, bright hydrophilic modified hexamethylene diisocyanate curing agent, propylene glycol methyl ether acetate and water removing agent uniformly and then split-charges the mixture into a closed iron tank to obtain the component B. The matte hydrophilic modified hexamethylene diisocyanate curing agent, the glossy hydrophilic modified hexamethylene diisocyanate curing agent, the propylene glycol methyl ether acetate and the water scavenger are the same as the above, and are not repeated.
The water-based plastic paint is prepared by mixing the component A and the component B prepared by the method. The application can prepare the component A and the component B firstly, and then mix the component A and the component B to obtain the water-based plastic paint. The application has no sequence for the synthesis sequence of the component A and the component B. The proportion of the component A and the component B in the application is the same as that described above, and the description is omitted.
The application also provides a medical device, which comprises a substrate and the aqueous plastic paint coated on the surface of the substrate or the aqueous plastic paint prepared by the preparation method. In certain embodiments of the application, the substrate is an ABS plastic substrate or a PC plastic substrate, preferably an ABS plastic substrate. The aqueous plastic paint disclosed by the application has excellent adhesive force on an ABS (Acrylonitrile butadiene styrene) substrate or a PC (polycarbonate) substrate, does not need baking, can reach the optimal state of paint film performance after being dried at room temperature for 2-3 days, is resistant to alcohol scrubbing and does not fade, and is very suitable for the coating production of medical instrument shells of the ABS substrate.
The application provides a water-based plastic paint and a preparation method thereof. The water-based plastic paint provided by the application is a water-based plastic paint with full matte, high scratch resistance and high alcohol rub resistance, the paint film gloss can reach 0 degrees, the scratch resistance is very good, the solvent resistance is good, the solvent rub resistance of the paint film of the colored paint is not fading, and the paint film is very suitable for being applied to medical appliances, in particular to medical appliances of ABS base materials. The preparation method of the water-based full-matte water-based plastic paint with high scratch resistance and high alcohol rub resistance has the advantages of simple operation and continuous production. Tests show that the water-based plastic paint provided by the application has the advantages of 0 degree of gloss, good adhesive force, good scratch resistance, no bright mark and no fading after scratch, and the alcohol scratch resistance times are as high as 188 times, and are obviously better than that of commercial plastic paint.
Detailed Description
The application discloses a water-based plastic paint and a preparation method thereof. Those skilled in the art can, with the benefit of this disclosure, suitably modify the process parameters to achieve this. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and are deemed to be included in the present application. While the methods and applications of this application have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that the application can be practiced and practiced with modification and alteration and combination of the methods and applications herein without departing from the spirit and scope of the application.
All the raw materials of the present application are not particularly limited in their sources, and may be purchased on the market or prepared according to conventional methods well known to those skilled in the art. All the raw materials of the present application are not particularly limited in purity, and analytical purity is preferably used in the present application. All raw materials of the application are of the conventional grades in the field, each grade is clear and definite in the field of relevant application, and the person skilled in the art can purchase the raw materials from the market according to the grade and the corresponding application. The materials in the examples of the present application are all commercially available, and the brands and manufacturers are consistent with those described in the specification of the present application.
The application is further illustrated by the following examples:
example 1
The full-matte, high scratch-resistant and high alcohol-scratch-resistant water-based plastic paint is prepared according to the following proportion:
a component:
aqueous resin 381:60 parts by weight; cosolvent texanol:3 parts by weight; defoamer BYK028:0.3 parts by weight; wetting agent tego wet 4100:0.3 parts by weight; dispersant BYK190:0.5 parts by weight; modified glass powder: 6 parts by weight; wax powder 2093:2 parts by weight; thickener PUR65:0.4 parts by weight; rheology adjuvant coapsur 2025:0.3 parts by weight; white color paste: 25 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; deionized water: 2 parts by weight;
and the component B comprises the following components:
matte hydrophilically modified hexamethylene diisocyanate curing agent 2547:40 parts by weight; gloss hydrophilic modified hexamethylene diisocyanate curing agent 2655:35 parts by weight; propylene glycol methyl ether acetate PMA:25 parts by weight; water scavenger Additive Ti:1 part by weight;
wherein the weight ratio of the component A to the component B is 100:8.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering the aqueous resin 381 into a clean container by using a 400-mesh filter screen, adding BYK028, adjusting the disperser to 1600r/min, and dispersing for 25min;
2) Two droplets of tego wet 4100 are sampled, whether the appearance of the coating film is shrinkage cavity is observed, and after no shrinkage cavity is confirmed, the rotating speed of the dispersing machine is adjusted to 900r/min;
3) Slowly adding texanol, tego wet 4100, BYK190, modified glass powder, wax powder 2093, PUR65, COAPUR2025, white paste and BEK-200L, stirring for 30min, and filtering with 400 mesh filter screen after detection is qualified to obtain component A.
The preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 2547, 2655, PMA and Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B finished product;
and mixing the prepared finished product of the component A and the finished product of the component B according to a proportion to prepare the full-matte, high-scratch-resistance and high-alcohol-scratch-resistance water-based plastic paint.
Example 2
The full-matte, high scratch-resistant and high alcohol-scratch-resistant water-based plastic paint is prepared according to the following proportion:
a component:
aqueous resin 381:53 parts by weight; cosolvent DPnB:4 parts by weight; defoaming agent Tego airex902W:0.3 parts by weight; wetting agent Tego wet 4100:0.3 parts by weight; dispersant Tego Dispers 735W:0.8 parts by weight; modified glass powder: 7 parts by weight; wax powder 2093:2 parts by weight; thickener XS83:0.5 parts by weight; rheology auxiliary Pur45:0.3 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; white color paste: 30 parts by weight; deionized water: 1 part by weight.
And the component B comprises the following components:
matte hydrophilically modified hexamethylene diisocyanate curing agent 2547:40 parts by weight; gloss hydrophilic modified hexamethylene diisocyanate curing agent 2655:35 parts by weight; 25 parts by weight of propylene glycol methyl ether acetate PMA; water scavenger Additive Ti:1 part by weight;
wherein the weight ratio of the component A to the component B is 100:7.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering the aqueous resin 381 into a clean container by using a 400-mesh filter screen, adding Tego airex902W, adjusting the disperser to 1600r/min, and dispersing for 25min;
2) Two Tego wet 4100 drops are sampled, whether the appearance of the coating film is shrinkage cavity is observed by spraying, and after no shrinkage cavity is confirmed, the rotating speed of the dispersing machine is adjusted to 900r/min;
3) Slowly adding DPnB, tego wet 4100, tego Dispers 735W, modified glass powder, wax powder 2093, XS83, pur45, BEK-200L and white paste, stirring for 30min, and filtering by a 400-mesh filter screen after the detection is qualified to obtain a component A finished product.
The preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 2547, 2655, PMA and Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B finished product.
And mixing the prepared finished product of the component A and the finished product of the component B according to a proportion to prepare the full-matte, high-scratch-resistance and high-alcohol-scratch-resistance water-based plastic paint.
Comparative example 1
The full-matte, high scratch-resistant and high alcohol-scratch-resistant water-based plastic paint is prepared according to the following proportion:
a component:
aqueous resin 381:60 parts by weight; cosolvent texanol:3 parts by weight; defoamer BYK028:0.3 parts by weight; wetting agent tego wet 4100:0.3 parts by weight; dispersant BYK190:0.5 parts by weight; modified glass powder: 8 parts by weight; thickener PUR65:0.4 parts by weight; rheology adjuvant coapsur 2025:0.3 parts by weight; white color paste: 25 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; deionized water: 2 parts by weight;
and the component B comprises the following components:
matte hydrophilically modified hexamethylene diisocyanate curing agent 2547:40 parts by weight; gloss hydrophilic modified hexamethylene diisocyanate curing agent 2655:35 parts by weight; propylene glycol methyl ether acetate PMA:25 parts by weight; water scavenger Additive Ti:1 part by weight;
wherein, the weight ratio of A, B components is 100:8.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering the aqueous resin 381 into a clean container by using a 400-mesh filter screen, adding BYK028, adjusting the disperser to 1600r/min, and dispersing for 25min;
2) Two droplets of tego wet 4100 are sampled, whether the appearance of the coating film is shrinkage cavity is observed, and after no shrinkage cavity is confirmed, the rotating speed of the dispersing machine is adjusted to 900r/min;
3) Slowly adding texanol, tego wet 4100, BYK190, modified glass powder, PUR65, COAPUR2025, white slurry and BEK-200L, stirring for 30min, and filtering with 400 mesh filter screen after detection is qualified to obtain component A;
the preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 2547, 2655, PMA and Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B finished product.
And mixing the prepared finished product of the component A and the prepared finished product of the component B according to the proportion to prepare the water-based plastic paint.
Comparative example 2
The full-matte, high scratch-resistant and high alcohol-scratch-resistant water-based plastic paint is prepared according to the following proportion:
a component:
aqueous resin 381:60 parts by weight; cosolvent texanol:3 parts by weight; defoamer BYK028:0.3 parts by weight; wetting agent tego wet 4100:0.3 parts by weight; dispersant BYK190:0.5 parts by weight; wax powder 2093:2 parts by weight; thickener PUR65:0.4 parts by weight; rheology adjuvant coapsur 2025:0.3 parts by weight; white color paste: 25 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; deionized water: 2 parts by weight;
and the component B comprises the following components:
matte hydrophilically modified hexamethylene diisocyanate curing agent 2547:40 parts by weight; gloss hydrophilic modified hexamethylene diisocyanate curing agent 2655:35 parts by weight; propylene glycol methyl ether acetate PMA:25 parts by weight; water scavenger Additive Ti:1 part by weight;
A. the weight ratio of the component B is 100:8.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering the aqueous resin 381 into a clean container by using a 400-mesh filter screen, adding BYK028, adjusting the disperser to 1600r/min, and dispersing for 25min;
2) Two droplets of tego wet 4100 are sampled, whether the appearance of the coating film is shrinkage cavity is observed, and after no shrinkage cavity is confirmed, the rotating speed of the dispersing machine is adjusted to 900r/min;
3) Slowly adding texanol, tego wet 4100, BYK190, 2093 wax powder, PUR65, COAPUR2025, white slurry and BEK-200L, stirring for 30min, and filtering with 400 mesh filter screen after detection is qualified to obtain component A;
the preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 2547, 2655, PMA and Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B finished product.
And mixing the prepared finished product of the component A and the prepared finished product of the component B according to the proportion to prepare the water-based plastic paint.
Example 5
The aqueous full-matt plastic paints prepared in examples 1-2 and comparative examples 1-2 above were compared to commercial aqueous matt plastic paints (commercial plastic paints from guangzhou kangzheng polymer HS 203). Taking the prepared sample and commercial plastic paint, respectively adding water-based red, yellow and black color paste with the same proportion to prepare the same color, respectively adding curing agents according to the proportion, uniformly stirring and adjusting the mixture to the same viscosity, respectively spraying the mixture on an ABS plastic plate and a PC plastic plate, naturally drying the mixture at room temperature, testing the adhesive force, the gloss and the scratch resistance of a paint film on the plastic on the next day, testing the alcohol scrubbing resistance of the paint film on the third day, dipping a white cloth strip with alcohol for wiping to see whether the color is lost, testing the alcohol scrubbing fading condition after the seventh day, and simultaneously testing the times of alcohol scrubbing resistance, wherein the test results are shown in table 1:
TABLE 1
From the comparison result of example 5, it can be seen that: the water-based matte plastic paint prepared by the application has the advantages of 0 degree of gloss, good adhesive force, good scratch resistance, no bright mark, alcohol scrubbing resistance, no fading, low VOC content, and is very suitable for the coating production of medical instrument shells of ABS substrates.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical scheme of the present application and the inventive concept thereof, and should be covered by the scope of the present application.
Claims (10)
1. The water-based plastic paint is characterized by comprising a component A and a component B;
the component A comprises:
hydroxy acrylic resin: 50-80 parts by weight;
modified glass powder: 3-10 parts by weight;
wax powder: 0.5 to 2 parts by weight;
the component B comprises:
matte hydrophilically modified hexamethylene diisocyanate curing agent: 25-45 parts by weight;
light hydrophilically modified hexamethylene diisocyanate curing agent: 25-40 parts by weight;
propylene glycol methyl ether acetate: 15-40 parts by weight.
2. The aqueous plastic paint of claim 1, wherein the component a further comprises:
cosolvent: 3 to 6 parts by weight;
wetting agent: 0.1 to 0.5 weight portion;
dispersing agent: 0.1 to 1 part by weight;
defoaming agent: 0.1 to 0.5 weight portion;
and (3) a thickening agent: 0.2 to 0.6 weight portion;
mildew preventive: 0.1 to 0.3 weight portion;
rheology aid: 0.1 to 0.4 weight portion;
color paste: 0 to 35 parts by weight;
and water: 0 to 10 parts by weight;
the component B further comprises: water scavenger: 0.5 to 2 parts by weight.
3. The aqueous plastic paint according to claim 1, wherein the weight ratio of component a to component B is 100:5 to 10.
4. The aqueous plastic paint according to claim 1, wherein in component a, the modified glass powder is selected from modified glass powders having a mesh number of 4000 to 6000;
the wax powder is selected from wax powder with hardness higher than H.
5. The aqueous plastic paint according to claim 2, wherein, in component A,
the hydroxy acrylic resin is selected from phenylpropenoid hydroxy acrylic resins;
the cosolvent is selected from at least one of alcohol ester cosolvent, alcohol ether cosolvent or alcohol cosolvent;
the wetting agent is selected from siloxane type gemini structure wetting agents;
the dispersant is selected from polymeric dispersants;
the defoaming agent is at least one of organosilicon defoaming agent or polyether siloxane defoaming agent;
the thickener is selected from polyurethane associative thickeners;
the mildew preventive is selected from isothiazolinone in-tank mildew preventive;
the rheological aid is selected from polyurethane association type rheological aids;
the color paste is selected from white color paste;
in the component B, the component B is a mixture,
the matte hydrophilic modified hexamethylene diisocyanate curing agent is selected from coarse particle size matting curing agents;
the brightening hydrophilic modified hexamethylene diisocyanate curing agent is selected from fine particle size brightening curing agents;
the water scavenger is selected from isocyanate type water scavenger.
6. The aqueous plastic paint according to claim 2, wherein the component a comprises:
hydroxy acrylic resin: 50-60 parts by weight; cosolvent: 3 to 4 parts by weight; wetting agent: 0.25 to 0.35 weight portion; dispersing agent: 0.3 to 0.8 weight portion; defoaming agent: 0.25 to 0.35 weight portion; and (3) a thickening agent: 0.35 to 0.45 weight portion; mildew preventive: 0.18 to 0.22 weight portion; rheology aid: 0.2 to 0.3 weight portion; color paste: 25-30 parts by weight; modified glass powder: 5-8 parts by weight; wax powder: 1 to 1.5 parts by weight; and water: 1 to 2 parts by weight;
the component B comprises:
matte hydrophilically modified hexamethylene diisocyanate curing agent: 30-40 parts by weight; light hydrophilically modified hexamethylene diisocyanate curing agent: 30-35 parts by weight; propylene glycol methyl ether acetate: 25-30 parts by weight; and a water scavenger: 1 to 1.3 parts by weight.
7. The aqueous plastic paint according to claim 6, characterized in that it comprises a weight ratio of 100: component a and component B of 8;
the component A comprises: hydroxy acrylic resin: 60 parts by weight; cosolvent: 3 parts by weight; wetting agent: 0.3 parts by weight; dispersing agent: 0.3 parts by weight; defoaming agent: 0.3 parts by weight; and (3) a thickening agent: 0.4 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.3 parts by weight; color paste: 25 parts by weight; modified glass powder: 6 parts by weight; wax powder: 2 parts by weight; and water: 2 parts by weight;
the component B comprises: matte hydrophilically modified hexamethylene diisocyanate curing agent: 40 parts by weight; light hydrophilically modified hexamethylene diisocyanate curing agent: 35 parts by weight; propylene glycol methyl ether acetate: 25 parts by weight; and a water scavenger: 1 part by weight;
or alternatively, the process may be performed,
the weight ratio of the components is 100:7, component a and component B;
the component A comprises: hydroxy acrylic resin: 53 parts by weight; cosolvent: 4 parts by weight; wetting agent: 0.3 parts by weight; dispersing agent: 0.8 parts by weight; defoaming agent: 0.3 parts by weight; and (3) a thickening agent: 0.5 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.3 parts by weight; color paste: 30 parts by weight; modified glass powder: 7 parts by weight; wax powder: 2 parts by weight; and water: 1 part by weight;
the component B comprises: matte hydrophilically modified hexamethylene diisocyanate curing agent: 40 parts by weight; light hydrophilically modified hexamethylene diisocyanate curing agent: 35 parts by weight; propylene glycol methyl ether acetate: 25 parts by weight; and a water scavenger: 1 part by weight.
8. The method for preparing an aqueous plastic paint according to any one of claims 1 to 7, comprising: and mixing the component A and the component B to obtain the water-based plastic paint.
9. A medical device comprising a substrate and the aqueous plastic paint of any one of claims 1 to 7 or the aqueous plastic paint produced by the production method of claim 8 applied to the surface of the substrate.
10. The medical device of claim 9, wherein the substrate is an ABS plastic substrate or a PC plastic substrate.
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