CN114989682A - Dip-coating paint for water-based tape measure and preparation method thereof - Google Patents
Dip-coating paint for water-based tape measure and preparation method thereof Download PDFInfo
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- CN114989682A CN114989682A CN202210747629.7A CN202210747629A CN114989682A CN 114989682 A CN114989682 A CN 114989682A CN 202210747629 A CN202210747629 A CN 202210747629A CN 114989682 A CN114989682 A CN 114989682A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 238000003618 dip coating Methods 0.000 title claims abstract description 44
- 239000003973 paint Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 35
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229920003180 amino resin Polymers 0.000 claims abstract description 27
- 239000003822 epoxy resin Substances 0.000 claims abstract description 27
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000012948 isocyanate Substances 0.000 claims abstract description 26
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 26
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 25
- 239000000080 wetting agent Substances 0.000 claims abstract description 24
- 238000007665 sagging Methods 0.000 claims abstract description 22
- 239000002562 thickening agent Substances 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 21
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 18
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 18
- FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 239000013530 defoamer Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 12
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 150000003863 ammonium salts Chemical class 0.000 claims description 5
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 4
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 4
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 4
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 4
- 229920000142 Sodium polycarboxylate Polymers 0.000 claims description 4
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 4
- 229960002887 deanol Drugs 0.000 claims description 4
- 239000012972 dimethylethanolamine Substances 0.000 claims 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 claims description 2
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229910021485 fumed silica Inorganic materials 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 14
- 238000000576 coating method Methods 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 12
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- 238000004132 cross linking Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- -1 hydroxypropyl Chemical group 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 239000001038 titanium pigment Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 230000011987 methylation Effects 0.000 description 1
- 238000007069 methylation reaction Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical group O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 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
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/80—Processes for incorporating ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A dip-coating paint for a water-based tape measure belongs to the field of water-based paint, and comprises the following components in parts by weight: 45-55 parts of water-based hydroxy acrylic acid secondary dispersion, 1-2 parts of water-based epoxy resin, 6-10 parts of partially methylated amino resin, 0.1-0.5 part of pH regulator, 2-6 parts of film-forming assistant, 0.5-1 part of dispersant, 0.1-0.3 part of wetting agent, 0.1-0.3 part of defoamer, 1-2 parts of water-based closed isocyanate curing agent, 10-20 parts of water, 20-25 parts of titanium dioxide, 0.5-1 part of anti-settling and anti-sagging assistant and 0.2-0.5 part of thickener. Stirring a pH regulator, a dispersing agent, a wetting agent, a defoaming agent, titanium dioxide and an anti-settling and anti-sagging auxiliary agent to obtain early-stage water slurry, and then uniformly stirring the water-based hydroxyl acrylic acid secondary dispersion, the partially methylated amino resin, the water-based epoxy resin, the water-based closed isocyanate curing agent, the early-stage water slurry, the film-forming auxiliary agent and the thickening agent to obtain the dip-coating paint for the water-based measuring tape. The dip-coating paint for the water-based tape measure, which is prepared by the invention, has the advantages of low VOC content, high adhesive force, high hardness, excellent salt spray resistance and the like.
Description
Technical Field
The invention belongs to the field of water-based paint, and particularly relates to dip-coating paint for a water-based tape measure and a preparation method thereof.
Background
The tape paint belongs to special paint and is only limited to the coating of steel tape for measurement. Due to the characteristics of the steel tape and the requirements of the coating process, the performance requirements of the steel tape are as follows: the paint film has high adhesive force, impact resistance, flexibility, hardness and corrosion resistance, and the coating mode generally adopts a dip-coating construction mode, so that the paint is convenient and has high efficiency. The currently known water-based tape coating is mainly water-soluble acrylic coating, and the water-soluble acrylic resin contains about 30% of solvent, which is technically improved to a certain extent compared with solvent-based coating, but the organic solvent content of the water-based tape coating cannot meet the latest environmental protection requirement.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a dip-coating paint for a water-based tape measure and a preparation method thereof. The dip-coating paint for the water-based tape measure adopts the water-based hydroxypropyl secondary dispersion as a main film forming substance, all components in the whole formula are matched with each other, the prepared dip-coating paint for the water-based tape measure has low VOC content compared with solvent-based paint and water-soluble paint, and the paint has the advantages of excellent film forming property, high adhesive force and hardness, excellent salt spray resistance, excellent sagging resistance and the like.
The invention adopts the specific technical scheme that:
a dip-coating paint for a water-based tape measure comprises the following components in parts by weight: 45-55 parts of water-based hydroxyl acrylic acid secondary dispersion, 1-2 parts of water-based epoxy resin, 6-10 parts of partially methylated amino resin, 0.1-0.5 part of pH regulator, 2-6 parts of film-forming assistant, 0.5-1 part of dispersant, 0.1-0.3 part of wetting agent, 0.1-0.3 part of defoaming agent, 1-2 parts of water-based closed isocyanate curing agent, 10-20 parts of water, 20-25 parts of titanium dioxide, 0.5-1 part of anti-settling anti-sagging assistant and 0.2-0.5 part of thickening agent.
As a further technical scheme, the dip-coating paint for the water-based tape measure comprises the following components in parts by weight: 50 parts of water-based hydroxyl acrylic acid secondary dispersion, 1.5 parts of water-based epoxy resin, 8 parts of partially methylated amino resin, 0.3 part of pH regulator, 5 parts of film-forming assistant, 0.8 part of dispersant, 0.2 part of wetting agent, 0.2 part of defoaming agent, 1.5 parts of water-based closed isocyanate curing agent, 14 parts of water, 22 parts of titanium dioxide, 0.8 part of anti-settling and anti-sagging assistant and 0.4 part of thickening agent.
As a further technical scheme, the PH regulator is dimethylethanolamine or 2-amino-2-methyl-1-propanol.
As a further technical scheme, the film-forming auxiliary agent is one or more of dipropylene glycol methyl ether, dipropylene glycol butyl ether, propylene glycol butyl ether, diethylene glycol butyl ether and isobutanol.
As a further technical scheme, the dispersant is a sodium polycarboxylate dispersant or an ammonium salt dispersant.
According to a further technical scheme, the wetting agent is a water-based organic silicon wetting agent, the defoaming agent is a polyether siloxane copolymer defoaming agent, the anti-settling anti-sagging auxiliary agent is fumed silica, and the thickening agent is an associated polyurethane thickening agent.
A preparation method of dip-coating paint for a water-based measuring tape comprises the following steps:
A. weighing the components according to the proportion of the dip-coating paint for the water-based tape measure for later use;
B. adding water into a reactor, sequentially adding a pH regulator, a dispersing agent, a wetting agent, a defoaming agent, titanium dioxide and an anti-settling anti-sagging auxiliary agent into the reactor at a stirring speed A, uniformly stirring to obtain a mixture A, and grinding the mixture A to obtain early-stage water slurry;
C. adding the water-based hydroxyl acrylic acid secondary dispersion into a reactor, sequentially adding part of methylated amino resin, water-based epoxy resin, water-based closed isocyanate curing agent, early-stage water slurry, film-forming assistant and thickening agent into the reactor at a stirring speed B, and then uniformly stirring to obtain the dip-coating paint for the water-based measuring tape.
As a further technical scheme, the stirring speed A in the step B is 500-800rmp, and the step of sequentially adding the PH regulator, the dispersant, the wetting agent, the defoamer, the titanium pigment and the anti-settling and anti-sagging auxiliary agent into the reactor is to sequentially add the PH regulator, the dispersant, the wetting agent, the defoamer, the titanium pigment and the anti-settling and anti-sagging auxiliary agent into the reactor every 3-8 min.
As a further technical scheme, in the step C, the stirring speed B is 500-800rmp, and the partially methylated amino resin, the aqueous epoxy resin, the aqueous blocked isocyanate curing agent, the early-stage water slurry, the film-forming assistant and the thickening agent are sequentially added into the reactor every 8-15 min.
The invention has the beneficial effects that:
1. according to the invention, the dip-coating paint for the water-based tape measure is optimally designed, the proportion is combined with the preparation method, the water-based hydroxypropyl secondary dispersion is selected as a main film forming substance, and all components in the whole formula are matched with each other, so that the mutual cooperation and enhancement effects are achieved.
2. In the invention, the water-based hydroxypropyl secondary dispersion is a main film-forming substance and takes part of methylated amino resin as a cross-linking agent to carry out curing cross-linking reaction, but the part of methylated amino resin is easy to self-cross-link due to too large hydroxymethyl activity and has relatively poor performance due to less cross-linking with resin hydroxyl, so that a closed isocyanate curing agent is added, the closed isocyanate curing agent can release isocyanate groups to react with the hydroxymethyl groups on the part of methylated amino resin to form a cross-linking structure, the cross-linking density is increased, the salt mist resistance, water resistance, chemical resistance and other performances of the water-based resin can be obviously improved, in addition, the epoxy resin is added, and the water-based hydroxypropyl secondary dispersion, the part of methylated amino resin, the closed isocyanate curing agent and the epoxy resin carry out complex chemical reaction, thereby playing a mutual synergistic and synergistic effects, the epoxy resin is taken as an additive and interweaved with a cross-linking structure generated by other components, so that the whole structure is more stable, the paint can keep better light and color retention during baking, and the paint has excellent water resistance, salt mist resistance and acid and alkali resistance.
3. The components are added at different nodes in batches, so that the reaction of each stage is fully performed, and the prepared dip-coating paint for the water-based tape measure has the characteristics of high strength, strong adhesive force and the like by controlling the proportion, the adding mode and the stirring mode of the components.
4. The partially methylated amino resin is partially methylated melamine resin, the amino resin has less free hydroxymethyl, high methylation degree and low molecular weight, a certain amount of imino groups are reserved in molecules, the amino resin is soluble in water, and the partially methylated amino resin is suitable for being used as a cross-linking agent of an aqueous coating, can perform cross-linking reaction during curing and can also perform self-polycondensation reaction, so that a coating with excellent performance can be obtained.
Detailed Description
The water-based hydroxy acrylic acid secondary dispersion is XG3801 produced by constant water new optical new material science and technology Limited, part of methylated amino resin is CYMEL327 produced by cyanogen special chemical Shanghai Limited, the polycarboxylate sodium salt dispersant is TEGO755W produced by Yingchui Special chemical (Shanghai) Limited, the ammonium salt dispersant is BYK760 produced by Germany BYK, the wetting agent is TEGO4100 produced by Yingchui Special chemical (Shanghai) Limited, the defoaming agent is TEGO902W produced by Yingchui special chemical (Shanghai) Limited, and the water is deionized water; other raw materials used are all available from the market unless otherwise specified.
Detailed description of the preferred embodiments
Example 1
A. Weighing the components according to the following formula of the dip-coating paint for the water-based measuring tape for later use: 50 parts of water-based hydroxyl acrylic acid secondary dispersion, 1.5 parts of water-based epoxy resin, 8 parts of partially methylated amino resin, 0.3 part of pH regulator, 5 parts of film-forming assistant, 0.8 part of dispersant, 0.2 part of wetting agent, 0.2 part of defoaming agent, 1.5 parts of water-based closed isocyanate curing agent, 14 parts of deionized water, 22 parts of titanium dioxide, 0.8 part of anti-settling and anti-sagging assistant and 0.4 part of thickening agent;
wherein the film-forming additive comprises 60 percent of diethylene glycol butyl ether and 40 percent of isobutanol by weight percent, the PH regulator is dimethylethanolamine, and the dispersant is a sodium polycarboxylate dispersant;
B. adding deionized water into a reactor, sequentially adding a pH regulator, a dispersing agent, a wetting agent, a defoaming agent, titanium dioxide and an anti-settling and anti-sagging auxiliary agent into the reactor every 5min at a stirring speed of 600rmp, uniformly stirring to obtain a mixture A, and grinding the mixture A to the fineness of 10 micrometers to obtain early-stage water slurry;
C. adding the water-based hydroxyl acrylic acid secondary dispersion into a reactor, sequentially adding part of methylated amino resin, water-based epoxy resin, a water-based closed isocyanate curing agent, the early-stage water slurry, a film-forming auxiliary agent and a thickening agent into the reactor every 10min at a stirring speed of 600rmp, and then stirring for 30min at a stirring speed of 900rmp until the materials are uniform to obtain the dip-coating paint for the water-based tape measure.
Example 2
A. Weighing the components according to the following formula of the dip-coating paint for the water-based measuring tape for later use: 45 parts of water-based hydroxyl acrylic acid secondary dispersion, 1 part of water-based epoxy resin, 6 parts of partially methylated amino resin, 0.3 part of pH regulator, 4 parts of film-forming assistant, 1 part of dispersant, 0.1 part of wetting agent, 0.1 part of defoamer, 2 parts of water-based closed isocyanate curing agent, 20 parts of deionized water, 25 parts of titanium dioxide, 1 part of anti-settling and anti-sagging assistant and 0.5 part of thickener;
wherein the film-forming additive is calculated according to the weight percentage and consists of 50 percent of dipropylene glycol methyl ether and 50 percent of isobutanol, the PH regulator is dimethylethanolamine, and the dispersant is ammonium salt dispersant;
B. adding deionized water into a reactor, sequentially adding a pH regulator, a dispersing agent, a wetting agent, a defoaming agent, titanium dioxide and an anti-settling anti-sagging auxiliary agent into the reactor every 8min at a stirring speed of 500rmp, uniformly stirring to obtain a mixture A, and grinding the mixture A to the fineness of 10 microns to obtain early-stage water slurry;
C. adding the water-based hydroxyl acrylic acid secondary dispersion into a reactor, sequentially adding part of methylated amino resin, water-based epoxy resin, a water-based closed isocyanate curing agent, the early-stage water slurry, a film-forming auxiliary agent and a thickening agent into the reactor every 15min at a stirring speed of 500rmp, and then stirring for 35min at a stirring speed of 500rmp until the materials are uniform to obtain the dip-coating paint for the water-based tape measure.
Example 3
A. Weighing the components according to the following formula of the dip-coating paint for the water-based measuring tape for later use: 55 parts of water-based hydroxy acrylic acid secondary dispersion, 2 parts of water-based epoxy resin, 10 parts of partially methylated amino resin, 0.5 part of pH regulator, 6 parts of film-forming assistant, 0.5 part of dispersant, 0.3 part of wetting agent, 0.3 part of defoamer, 1 part of water-based closed isocyanate curing agent, 10 parts of deionized water, 20 parts of titanium dioxide, 0.5 part of anti-settling and anti-sagging assistant and 0.2 part of thickener;
wherein the film-forming additive comprises 40 percent of dipropylene glycol methyl ether, 30 percent of diethylene glycol butyl ether and 30 percent of isobutanol by weight percentage, the PH regulator is 2-amino-2-methyl-1-propanol, and the dispersant is a sodium polycarboxylate dispersant;
B. adding deionized water into a reactor, sequentially adding a pH regulator, a dispersing agent, a wetting agent, a defoaming agent, titanium dioxide and an anti-settling anti-sagging auxiliary agent into the reactor every 3min at the stirring speed of 800rmp, uniformly stirring to obtain a mixture A, and grinding the mixture A to the fineness of 10 microns to obtain early-stage water slurry;
C. adding the water-based hydroxyl acrylic acid secondary dispersion into a reactor, sequentially adding part of methylated amino resin, water-based epoxy resin, a water-based closed isocyanate curing agent, the early-stage water slurry, a film-forming auxiliary agent and a thickening agent into the reactor every 8min at the stirring speed of 800rmp, and then stirring for 25min at the stirring speed of 1000rmp until the materials are uniform to obtain the dip-coating paint for the water-based tape measure.
Example 4
A. Weighing the components according to the following formula of the dip-coating paint for the water-based measuring tape for later use: 50 parts of water-based hydroxyl acrylic acid secondary dispersion, 2 parts of water-based epoxy resin, 8 parts of partially methylated amino resin, 0.1 part of pH regulator, 2 parts of film-forming assistant, 0.8 part of dispersant, 0.2 part of wetting agent, 0.3 part of defoaming agent, 2 parts of water-based closed isocyanate curing agent, 15 parts of deionized water, 23 parts of titanium dioxide, 0.6 part of anti-settling anti-sagging assistant and 0.3 part of thickening agent;
wherein the film-forming assistant is diethylene glycol monobutyl ether, the PH regulator is 2-amino-2-methyl-1-propanol, and the dispersant is ammonium salt dispersant;
B. adding deionized water into a reactor, sequentially adding a pH regulator, a dispersing agent, a wetting agent, a defoaming agent, titanium dioxide and an anti-settling anti-sagging auxiliary agent into the reactor every 5min at a stirring speed of 600rmp, uniformly stirring to obtain a mixture A, and grinding the mixture A to the fineness of 10 microns to obtain early-stage water slurry;
C. adding the aqueous hydroxy acrylic acid secondary dispersion into a reactor, sequentially adding part of methylated amino resin, aqueous epoxy resin, aqueous blocked isocyanate curing agent, early-stage water slurry, film-forming assistant and thickening agent into the reactor every 10min at the stirring speed of 600rmp, and then stirring for 30min at the stirring speed of 900rmp until the materials are uniform to obtain the dip-coating paint for the aqueous tape.
Comparative example 1
The present comparative example is different from example 1 only in that comparative example 1 does not contain the aqueous epoxy resin, and the remaining kinds of components, contents of components, and preparation processes are consistent with example 1.
Comparative example 2
The comparative example is different from example 1 only in that comparative example 2 does not contain the aqueous blocked isocyanate curing agent and the remaining kinds of components, contents of components and preparation process are consistent with example 1.
Comparative example 3
The comparative example is different from example 1 only in that comparative example 3 does not contain the aqueous epoxy resin and the aqueous blocked isocyanate curing agent, and the kinds, contents and preparation processes of the remaining components are consistent with example 1.
Second, performance test
Coating the water-based tape measure prepared in the embodiment and the comparative example by dip coating with a dip coating paint in a dip coating manner, wherein the baking temperature is 150-160 ℃, the baking time is 15-20min, and then the performance of the coating is detected, the performance test result is shown in table 1, wherein the gloss, pencil hardness, adhesive force, impact strength, flexibility, water resistance, salt mist resistance, acid resistance and alkali resistance tests are performed according to the national standard GB/T9756-2018, wherein the larger the gloss unit value is, the smoother the paint film surface is, and the better the gloss is; the VOC test was obtained from gas chromatography tests.
TABLE 1
As can be seen from table 1, the dip coating for the aqueous tape measure prepared in comparative example 1 does not contain the aqueous epoxy resin and is reduced in gloss, hardness, salt spray resistance, acid resistance, and alkali resistance to various degrees as compared with example 1, the dip coating for the aqueous tape measure prepared in comparative example 2 does not contain the aqueous blocked isocyanate curing agent and is greatly reduced in gloss, hardness, water resistance, salt spray resistance, acid resistance, and alkali resistance, the dip coating for the aqueous tape measure prepared in comparative example 3 does not contain the aqueous epoxy resin and the aqueous blocked isocyanate curing agent and is not much different in performance from the dip coating for the aqueous tape measure prepared in comparative example 2, and thus it can be seen that a small amount of the aqueous epoxy resin alone as an additive does not greatly affect the performance of the dip coating for the aqueous tape measure, but when the aqueous epoxy resin and the aqueous blocked isocyanate curing agent are added together to the coating, can generate mutual synergy and synergy with other components, can keep better gloss and color retention when the coating is baked, and has excellent water resistance, salt mist resistance and acid and alkali resistance.
Claims (9)
1. The dip-coating paint for the water-based tape is characterized by comprising the following components in parts by weight: 45-55 parts of water-based hydroxyl acrylic acid secondary dispersion, 1-2 parts of water-based epoxy resin, 6-10 parts of partially methylated amino resin, 0.1-0.5 part of pH regulator, 2-6 parts of film-forming assistant, 0.5-1 part of dispersant, 0.1-0.3 part of wetting agent, 0.1-0.3 part of defoaming agent, 1-2 parts of water-based closed isocyanate curing agent, 10-20 parts of water, 20-25 parts of titanium dioxide, 0.5-1 part of anti-settling anti-sagging assistant and 0.2-0.5 part of thickening agent.
2. The dip coating for the water-based tape measure according to claim 1, comprising the following components in parts by weight: 50 parts of water-based hydroxyl acrylic acid secondary dispersion, 1.5 parts of water-based epoxy resin, 8 parts of partially methylated amino resin, 0.3 part of pH regulator, 5 parts of film-forming assistant, 0.8 part of dispersant, 0.2 part of wetting agent, 0.2 part of defoaming agent, 1.5 parts of water-based closed isocyanate curing agent, 14 parts of water, 22 parts of titanium dioxide, 0.8 part of anti-settling and anti-sagging assistant and 0.4 part of thickening agent.
3. The dip coating for the water-based tape measure according to any one of claims 1 to 2, wherein the PH adjuster is dimethylethanolamine or 2-amino-2-methyl-1-propanol.
4. The dip-coating paint for the water-based measuring tape according to any one of claims 1 to 2, wherein the film forming auxiliary agent is one or more of dipropylene glycol methyl ether, dipropylene glycol butyl ether, propylene glycol butyl ether, diethylene glycol butyl ether and isobutanol.
5. The dip coating for an aqueous tape measure according to any one of claims 1 to 2, wherein the dispersant is a sodium polycarboxylate dispersant or an ammonium salt dispersant.
6. The dip-coating paint for the water-based tape measure according to any one of claims 1 to 2, wherein the wetting agent is a water-based silicone wetting agent, the defoaming agent is a polyether siloxane copolymer defoaming agent, the anti-settling anti-sagging auxiliary agent is fumed silica, and the thickener is an associated polyurethane thickener.
7. The method of preparing a dip coating for an aqueous tape measure of claim 1, comprising the steps of:
A. weighing the components according to the proportion of the dip-coating paint for the water-based tape measure for later use;
B. adding water into a reactor, sequentially adding a pH regulator, a dispersing agent, a wetting agent, a defoaming agent, titanium dioxide and an anti-settling anti-sagging auxiliary agent into the reactor at a stirring speed A, uniformly stirring to obtain a mixture A, and grinding the mixture A to obtain early-stage water slurry;
C. and adding the aqueous hydroxyl acrylic acid secondary dispersion into a reactor, sequentially adding part of methylated amino resin, aqueous epoxy resin, aqueous blocked isocyanate curing agent, early-stage water slurry, film-forming assistant and thickening agent into the reactor at a stirring speed B, and then uniformly stirring to obtain the dip-coating paint for the aqueous tape.
8. The preparation method of the dip coating for the water-based tape measure as claimed in claim 7, wherein the stirring speed A in the step B is 500-800rmp, and the pH regulator, the dispersant, the wetting agent, the defoamer, the titanium dioxide and the anti-settling and anti-sagging auxiliary agent are sequentially added into the reactor every 3-8 min.
9. The preparation method of the dip-coating paint for the water-based tape measure as claimed in claim 7, wherein the stirring speed B in the step C is 500-800rmp, and the partially methylated amino resin, the water-based epoxy resin, the water-based blocked isocyanate curing agent, the early-stage water slurry, the film-forming assistant and the thickener are sequentially added into the reactor every 8-15 min.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210747629.7A CN114989682A (en) | 2022-06-29 | 2022-06-29 | Dip-coating paint for water-based tape measure and preparation method thereof |
| PCT/CN2022/133261 WO2024001004A1 (en) | 2022-06-29 | 2022-11-21 | Waterborne dipping coating for measuring tape and preparation method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210747629.7A CN114989682A (en) | 2022-06-29 | 2022-06-29 | Dip-coating paint for water-based tape measure and preparation method thereof |
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| CN114989682A true CN114989682A (en) | 2022-09-02 |
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| CN202210747629.7A Pending CN114989682A (en) | 2022-06-29 | 2022-06-29 | Dip-coating paint for water-based tape measure and preparation method thereof |
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| CN (1) | CN114989682A (en) |
| WO (1) | WO2024001004A1 (en) |
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| CN115505305A (en) * | 2022-09-29 | 2022-12-23 | 合肥学院 | High-performance water-based anticorrosive paint and preparation method thereof |
| CN115537108A (en) * | 2022-10-12 | 2022-12-30 | 安徽衡光新材料科技有限公司 | Water-based nanoscale anticorrosive paint for watch shells and preparation method thereof |
| CN115678403A (en) * | 2022-11-02 | 2023-02-03 | 佛山阳光逸采涂料科技有限公司 | Water-based electronic component insulating coating and preparation method thereof |
| WO2024001004A1 (en) * | 2022-06-29 | 2024-01-04 | 广东衡光新材料科技有限公司 | Waterborne dipping coating for measuring tape and preparation method therefor |
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Also Published As
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| WO2024001004A1 (en) | 2024-01-04 |
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