CN111349375A - Water-based bi-component epoxy seal primer and preparation method thereof - Google Patents
Water-based bi-component epoxy seal primer and preparation method thereof Download PDFInfo
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- CN111349375A CN111349375A CN202010325720.0A CN202010325720A CN111349375A CN 111349375 A CN111349375 A CN 111349375A CN 202010325720 A CN202010325720 A CN 202010325720A CN 111349375 A CN111349375 A CN 111349375A
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- water
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 103
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 78
- 239000006185 dispersion Substances 0.000 claims abstract description 76
- 239000000080 wetting agent Substances 0.000 claims abstract description 24
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 23
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 21
- 239000003899 bactericide agent Substances 0.000 claims abstract description 21
- 239000004094 surface-active agent Substances 0.000 claims abstract description 21
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 26
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 claims description 25
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 16
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 11
- 229920001296 polysiloxane Polymers 0.000 claims description 10
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- -1 polysiloxanes Polymers 0.000 claims description 9
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 4
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 3
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 claims description 3
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 claims description 3
- 229960002887 deanol Drugs 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 239000012972 dimethylethanolamine Substances 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- 229940086542 triethylamine Drugs 0.000 claims description 3
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- 230000003115 biocidal effect Effects 0.000 claims description 2
- 239000003139 biocide Substances 0.000 claims description 2
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical group O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 claims description 2
- 238000000576 coating method Methods 0.000 abstract description 25
- 239000011248 coating agent Substances 0.000 abstract description 21
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 abstract description 18
- 239000001263 FEMA 3042 Substances 0.000 abstract description 18
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 abstract description 18
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 abstract description 18
- 229940033123 tannic acid Drugs 0.000 abstract description 18
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- 230000000694 effects Effects 0.000 abstract description 16
- 230000007613 environmental effect Effects 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003960 organic solvent Substances 0.000 abstract description 5
- 239000004519 grease Substances 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 18
- 239000002023 wood Substances 0.000 description 18
- 239000003973 paint Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 10
- 238000005507 spraying Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 description 4
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
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- 239000000203 mixture Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 229920001864 tannin Polymers 0.000 description 3
- 235000018553 tannin Nutrition 0.000 description 3
- 239000001648 tannin Substances 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
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- 238000005034 decoration Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920003009 polyurethane dispersion Polymers 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- VUWCWMOCWKCZTA-UHFFFAOYSA-N 1,2-thiazol-4-one Chemical class O=C1CSN=C1 VUWCWMOCWKCZTA-UHFFFAOYSA-N 0.000 description 1
- LXOFYPKXCSULTL-UHFFFAOYSA-N 2,4,7,9-tetramethyldec-5-yne-4,7-diol Chemical compound CC(C)CC(C)(O)C#CC(C)(O)CC(C)C LXOFYPKXCSULTL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 235000009135 Quercus rubra Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
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- 239000000839 emulsion Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
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- 230000000855 fungicidal effect Effects 0.000 description 1
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- 239000006221 furniture coating Substances 0.000 description 1
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- 240000003858 northern red oak Species 0.000 description 1
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Images
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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
-
- 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
- C09D7/63—Additives non-macromolecular organic
Abstract
The invention relates to the technical field of coatings, in particular to a water-based bi-component epoxy seal primer and a preparation method thereof, wherein the preparation raw materials at least comprise the following components in parts by weight: the water-based epoxy dispersion, a defoaming agent, a wetting agent, a surfactant, a neutralizing agent, a leveling agent, a film-forming assistant, a bactericide and water, wherein the component B comprises the following components: the curing agent can form a compact coating film when the waterborne two-component epoxy seal primer provided by the invention is used, has an excellent sealing effect, and can effectively prevent the seepage of organic solvents such as grease, tannic acid and the like; the coating film also has excellent mechanical properties such as high hardness, wear resistance and the like; in addition, the waterborne two-component epoxy seal primer provided by the invention does not contain organic solvents, is good in environmental protection, simple in production, convenient to construct and strong in permeability, and is worthy of popularization.
Description
Technical Field
The invention relates to the technical field of coatings, and particularly relates to a water-based bi-component epoxy seal primer and a preparation method thereof.
Background
With the promotion of the living taste of people and the high concern on health, the future home decoration and furniture coating markets are bound to be the water-based paint. The popularization of the water-based wood coating is very beneficial to the reasonable utilization of resources and the improvement of environmental sanitation. As the operability of the construction of the water-based wood coating is enhanced, domestic well-known decoration companies intend to use the water-based wood coating comprehensively, train painters to establish corresponding construction teams and initiate water-based movement. Nowadays, the safety and environmental protection indexes of the paint are increasingly emphasized, and the water-based wood paint is gradually accepted by the market due to the characteristics of low harm and low pollution.
In recent years, the furniture material mostly takes solid wood as the main material, but the application of the water-based wood lacquer to the solid wood also has some problems, such as the sealing effect of part of the water-based wood lacquer is not ideal, and grease and tannic acid can not be sealed; the solid wood with multiple fibers and wood ribs is difficult to treat, and the rib expansion phenomenon is easy to occur; part of solid wood is soft, the hardness of the water-based wood paint is generally lower than that of the oil paint, and a paint film and wood are easy to collapse simultaneously after collision, so that the appearance is influenced.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides a water-based two-component epoxy seal primer, which at least comprises the following raw materials in parts by weight: 65-85 parts of aqueous epoxy dispersoid, 0.3-0.9 part of defoaming agent, 0.2-0.8 part of wetting agent, 0.1-0.9 part of surfactant, 0.01-0.4 part of neutralizer, 0.2-0.7 part of flatting agent, 2-10 parts of film-forming additive, 0.01-0.3 part of bactericide and 12-30 parts of water, wherein the component B comprises the following components: 10-25 parts of a curing agent.
In a preferred embodiment of the present invention, the aqueous epoxy dispersion is a bisphenol a epoxy dispersion and/or an epoxidized meta-xylylenediamine dispersion.
As a preferred embodiment of the present invention, the aqueous epoxy dispersion is a combination of a bisphenol a epoxy dispersion and an epoxidized meta-xylylenediamine dispersion, wherein the mass ratio of the bisphenol a epoxy dispersion to the epoxidized meta-xylylenediamine dispersion is 3: (0.8-1.2).
In a preferred embodiment of the present invention, the defoaming agent is one or more selected from the group consisting of an aqueous non-silicone fatty acid polymer, a modified polyacrylic acid polymer, a polyoxyethylene ether, and a modified polysiloxane.
In a preferred embodiment of the present invention, the wetting agent is polyether-modified polysiloxane and/or polyether-modified polydimethylsiloxane.
As a preferred technical scheme of the invention, the neutralizing agent is selected from one or more of triethylamine, triethanolamine, dimethylethanolamine and 2-amino-2-methyl-1-propanol.
In a preferred embodiment of the present invention, the film-forming aid is one or more selected from the group consisting of propylene glycol butyl ether, dipropylene glycol methyl ether, and propylene glycol phenyl ether.
As a preferable technical scheme, the bactericide is selected from isothiazolinone and/or benzisothiazolinone.
In a preferred embodiment of the present invention, the curing agent is a water-based amine curing agent.
The second aspect of the invention provides a preparation method of a water-based two-component epoxy seal primer, which is characterized by comprising the following steps:
(1) adding the aqueous epoxy dispersion into a container, adding a defoaming agent, a wetting agent, a surfactant, a neutralizer and a leveling agent at the rotating speed of 800-1000 rpm, dispersing at the rotating speed of 1200-1500rpm, and dispersing for 10 min; premixing the film-forming auxiliary agent and water, then adding the film-forming auxiliary agent and the water at the rotating speed of 800-1000 rpm, dispersing for 5-10min, then adding the bactericide, uniformly stirring at the rotating speed of 600-800 rpm, filtering and packaging to obtain a main material;
(2) uniformly mixing the main material with a curing agent and water, wherein the mass ratio of the main material to the curing agent to the water is 1: 0.2: (0.5-0.7) to obtain the product.
Has the advantages that: the invention provides a water-based bi-component epoxy seal primer and a preparation method thereof, which can be prepared into a bi-component primer by selecting a water-based epoxy dispersion to replace common water-based film forming substances, such as acrylic acid dispersion or polyurethane dispersion and the like, and matching with other auxiliary agents and a curing agent component; when the waterborne two-component epoxy seal primer provided by the invention is used, a compact coating film can be formed, the sealing effect is excellent, and the seepage of organic solvents such as grease, tannic acid and the like can be effectively prevented; the coating film also has excellent mechanical properties such as high hardness, wear resistance and the like; in addition, the waterborne two-component epoxy seal primer provided by the invention does not contain organic solvents, is good in environmental protection, simple in production, convenient to construct and strong in permeability, and is worthy of popularization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a graph showing the comparative effect of tannic acid on board sealing;
description of the symbols:
1-represents spraying only the waterborne two-component epoxy sealer prepared in example 1;
2-spraying the waterborne two-component epoxy seal primer prepared in example 1, drying for 4 hours at 35 ℃, slightly polishing, and then spraying a waterborne white primer on the surface;
3-spraying the water-based double-component epoxy seal primer prepared in the example 1, drying for 4 hours at 35 ℃, slightly polishing, spraying a water-based white primer on the surface, and finally spraying a water-based white finish;
21-no paint is sprayed on the sheet;
22-only spraying a layer of water-based white primer on the surface of the plate;
23-spraying a layer of water-based white primer on the surface of the plate, and finally spraying a layer of water-based white finish;
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
In order to solve the technical problems, the first aspect of the invention provides a water-based two-component epoxy seal primer, which at least comprises the following raw materials in parts by weight: 65-85 parts of aqueous epoxy dispersoid, 0.3-0.9 part of defoaming agent, 0.2-0.8 part of wetting agent, 0.1-0.9 part of surfactant, 0.01-0.4 part of neutralizer, 0.2-0.7 part of flatting agent, 2-10 parts of film-forming additive, 0.01-0.3 part of bactericide and 12-30 parts of water, wherein the component B comprises the following components: 10-25 parts of a curing agent.
In a preferred embodiment, the water-based two-component epoxy seal primer of the invention is prepared from at least the following raw materials in parts by weight: 70-80 parts of water-based epoxy dispersoid, 0.4-0.8 part of defoaming agent, 0.3-0.7 part of wetting agent, 0.3-0.7 part of surfactant, 0.05-0.3 part of neutralizing agent, 0.3-0.6 part of flatting agent, 3-8 parts of film-forming additive, 0.05-0.2 part of bactericide and 15-25 parts of water, wherein the component B comprises the following components: 16-23 parts of a curing agent.
In a most preferred embodiment, the water-based two-component epoxy seal primer of the present invention is prepared from at least, by weight, component a: 75 parts of aqueous epoxy dispersoid, 0.6 part of defoaming agent, 0.5 part of wetting agent, 0.5 part of surfactant, 0.1 part of neutralizing agent, 0.5 part of flatting agent, 5 parts of film-forming assistant, 0.1 part of bactericide and 20 parts of water, wherein the component B comprises the following components in parts by weight: and 20 parts of a curing agent.
Aqueous epoxy dispersions
In a preferred embodiment, the aqueous epoxy dispersion of the present invention is a bisphenol a epoxy dispersion and/or an epoxidized meta-xylylenediamine dispersion.
In a more preferred embodiment, the aqueous epoxy dispersion of the present invention is a combination of a bisphenol a epoxy dispersion and an epoxidized meta-xylylenediamine dispersion, wherein the mass ratio of the bisphenol a epoxy dispersion to the epoxidized meta-xylylenediamine dispersion is 3: (0.8-1.2).
In a more preferred embodiment, the aqueous epoxy dispersion of the present invention is a combination of a bisphenol a epoxy dispersion and an epoxidized meta-xylylenediamine dispersion, wherein the mass ratio of the bisphenol a epoxy dispersion to the epoxidized meta-xylylenediamine dispersion is 3: 1.03.
in a more preferred embodiment, the bisphenol A epoxy dispersion of the present invention has an epoxy equivalent weight of 176-185 g/eq.
In a most preferred embodiment, the bisphenol A epoxy dispersion of the present invention is commercially available from a manufacturer including, but not limited to, Dow, U.S. under the designation DER 330.
In a more preferred embodiment, the epoxidized meta-xylylenediamine dispersion of the present invention has an epoxy content per unit volume of 95 to 110 g/eq.
In a most preferred embodiment, the epoxidized meta-xylylenediamine dispersion of the present invention is commercially available from a manufacturer including, but not limited to, Shenzhen, Jia Dida chemical Co., Ltd, under the designation ERISYS GA-240.
Defoaming agent
The defoaming agent of the present invention is a substance that can reduce the surface tension of water, solutions, suspensions, etc., prevent the formation of foam, or reduce or eliminate the original foam.
In a preferred embodiment, the defoaming agent of the present invention is selected from one or more of an aqueous non-silicone fatty acid polymer, a modified polyacrylic acid polymer, a polyoxyethylene ether, and a modified polysiloxane.
In a more preferred embodiment, the defoamer of the present invention is commercially available from a manufacturer including, but not limited to, BYK-024, Germany.
In a more preferred embodiment, the defoamer of the present invention is commercially available from a manufacturer including, but not limited to, Kyowa chemical company, model 902W, Shanghai.
In a more preferred embodiment, the defoamer of the present invention is a combination of BYK-024 and diutan 902W, wherein the mass ratio of BYK-024 to diutan 902W is 1: (0.5-1.5).
In a most preferred embodiment, the defoamer of the present invention is a combination of BYK-024 and diutan 902W, wherein the mass ratio of BYK-024 to diutan 902W is 1: 1.
the invention selects the organic silicon defoamer, does not contain VOC and has good compatibility. The addition is convenient, the coating can be used for various coatings, and particularly has good effect when being matched with polyether siloxane copolymer; the reason why this is possible is that the polyether siloxane copolymer contains a silica component, has a synergistic effect with the silicone antifoaming agent, is capable of effectively removing fine bubbles in the system, and has high compatibility in the aqueous epoxy dispersion, particularly, the mass ratio of BYK-024 to dike 902W is 1: (0.5-1.5), the effect is best.
Wetting agent
The wetting agent of the present invention is a surfactant of a substance that can make solid materials more easily wetted by water by reducing the surface energy thereof.
In a preferred embodiment, the wetting agent according to the invention is a polyether-modified polysiloxane and/or a polyether-modified polydimethylsiloxane.
In a most preferred embodiment, the wetting agent of the present invention is digao 4100, which is commercially available from a manufacturer including, but not limited to, shenzhen, lan bo environmental technologies ltd.
Surface active agent
The surfactant is a substance which is added in a small amount and can cause the interface state of a solution system of the surfactant to change obviously. Has fixed hydrophilic and lipophilic groups and can be directionally arranged on the surface of the solution.
In a preferred embodiment, the surfactant of the present invention is a nonionic surfactant.
In a most preferred embodiment, the surfactants of the present invention are commercially available from a manufacturer including, but not limited to, American air chemical AP under the designation Surfynol 104 DPM.
Neutralizing agent
The neutralizing agent of the present invention is a substance capable of dissolving a water-soluble resin in water by forming a polymer resin salt in a coating material. The neutralizing agent has an influence on the water solubility of the resin, the storage stability, viscosity, curing speed of the coating, and yellowing of the paint film, and different neutralizing agents are selected according to the variety of the resin.
In a preferred embodiment, the neutralizing agent according to the present invention is selected from one or more of triethylamine, triethanolamine, dimethylethanolamine, 2-amino-2-methyl-1-propanol.
In a more preferred embodiment, the neutralizing agent of the present invention is 2-amino-2-methyl-1-propanol.
In a most preferred embodiment, the 2-amino-2-methyl-1-propanol of the present invention is commercially available from a manufacturer including, but not limited to Dow USA under the trade designation AMP-95.
The invention adopts the neutralizing agent, can effectively control the pH value of the system and reduce the formula cost, and particularly selects AMP-95 as the multifunctional amine auxiliary agent, thereby not only having the effect of stably adjusting the pH value of the emulsion, but also having the functions of moistening and dispersing.
Leveling agent
The leveling agent is a common coating additive, can promote a coating to form a flat, smooth and uniform coating film in a drying film-forming process, can effectively reduce the surface tension of a coating liquid, and improves the leveling property and uniformity. Can improve the permeability of the coating liquid, reduce the possibility of generating spots and stains during the brush coating, increase the coverage and ensure that the formed film is uniform and natural.
In a preferred embodiment, the leveling agent disclosed by the invention is selected from one or more of Glide 410, Glide 482, BYK-380N, BYK-381, BYK-307 and BYK-346.
In a most preferred embodiment, the leveling agent of the present invention is BYK-346.
Film forming aid
The film-forming assistant is also called a coalescing assistant, can promote the plastic flow and elastic deformation of a high molecular compound, improves the coalescing performance, can form a film in a wider construction temperature range, and is a vanishable plasticizer.
In a preferred embodiment, the coalescent of the present invention is selected from one or more of propylene glycol butyl ether, dipropylene glycol methyl ether, propylene glycol phenyl ether.
In a most preferred embodiment, the coalescent of the present invention is dipropylene glycol butyl ether.
Bactericide
The bactericide is mainly applied to water-based paint.
In a preferred embodiment, the fungicide according to the invention is selected from isothiazolinones and/or benzisothiazolinone.
In a more preferred embodiment, the biocide of the present invention is methylisothiazolinone.
Curing agent
The curing agent, also known as a hardener, curing agent or setting agent, of the present invention is a substance or mixture that enhances or controls the curing reaction. The resin curing is carried out by carrying out chemical reactions such as condensation, ring closure, addition or catalysis to enable the thermosetting resin to generate an irreversible change process, and the curing is completed by adding a curing agent. The curing agent is an indispensable additive, and the curing agent is required to be added when the epoxy resin is used as an adhesive, a coating and a casting material, otherwise, the epoxy resin cannot be cured. The variety of the curing agent has great influence on the mechanical property, heat resistance, water resistance, corrosion resistance and the like of the cured product.
In a preferred embodiment, the curing agent of the present invention is a waterborne amine curing agent.
In a most preferred embodiment, the curing agent of the present invention is DEH 805, commercially available from a manufacturer including, but not limited to, Chongqing Kangyin chemical Co.
In a second aspect, the present invention provides a method for preparing a waterborne two-component epoxy primer sealer, comprising the steps of:
(1) adding the aqueous epoxy dispersion into a container, adding a defoaming agent, a wetting agent, a surfactant, a neutralizer and a leveling agent at the rotating speed of 800-1000 rpm, dispersing at the rotating speed of 1200-1500rpm, and dispersing for 10 min; premixing the film-forming auxiliary agent and water, then adding the film-forming auxiliary agent and the water at the rotating speed of 800-1000 rpm, dispersing for 5-10min, then adding the bactericide, uniformly stirring at the rotating speed of 600-800 rpm, filtering and packaging to obtain a main material;
(2) and (2) uniformly mixing the main material, the curing agent and water, wherein the mass ratio of the main material to the curing agent to the water is 1: 0.2: 0.5-0.7.
The inventor finds in experiments that the waterborne epoxy seal clear primer disclosed by the invention can obtain a compact coating effect by selecting a waterborne epoxy dispersion to replace common waterborne film forming substances such as an acrylic dispersion or a polyurethane dispersion and reacting with a curing agent, has an excellent seal effect, and can effectively prevent grease and tannic acid from exuding. The reason for possible existence is that the invention selects the waterborne epoxy dispersoid with a certain epoxy equivalent and can generate deep crosslinking reaction with the curing agent containing amino, namely, epoxy groups in the dispersoid component and amino groups in the curing agent component react to generate epoxy-amine bonds, and a compact coating layer can be obtained; in addition, the multifunctional epoxidized meta-xylylenediamine dispersion can reduce the viscosity of the component A, improve the penetration wettability of the product, and simultaneously improve the adhesive density of the system due to the structure, thereby further improving the hardness of the whole paint film. In addition, the seal transparent primer does not contain organic solvent, has good environmental protection, simple production, convenient construction and strong permeability, and solves the problems of influence on the performance of the coating film and construction difficulty caused by the complexity of wood material in the coating process of the water-based wood coating by adopting the water-based epoxy seal transparent primer provided by the invention.
It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the raw materials used are commercially available from national chemical reagents, unless otherwise specified.
Examples
In order to better understand the above technical solutions, the following detailed descriptions will be provided with reference to specific embodiments. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention. In addition, the raw materials are commercially available and the extraction methods of the extract are all conventional extraction methods, if not otherwise specified.
Example 1
The preparation method provides a water-based bi-component epoxy seal primer, which comprises the following preparation raw materials in parts by weight: 75 parts of aqueous epoxy dispersoid, 0.6 part of defoaming agent, 0.5 part of wetting agent, 0.5 part of surfactant, 0.1 part of neutralizing agent, 0.5 part of flatting agent, 5 parts of film-forming assistant, 0.1 part of bactericide and 20 parts of water, wherein the component B comprises the following components in parts by weight: and 20 parts of a curing agent.
The aqueous epoxy dispersion is a combination of a bisphenol A epoxy dispersion and an epoxidized meta-xylylenediamine dispersion, wherein the mass ratio of the bisphenol A epoxy dispersion to the epoxidized meta-xylylenediamine dispersion is 3: 1.03.
the bisphenol a epoxy dispersion is commercially available from the dow usa under the designation DER 330.
The epoxidized meta-xylylenediamine dispersion can be obtained by commercial production, and the manufacturer is Shenzhen Jia Dida chemical Co., Ltd, and the trademark is ERISYS GA-240.
The defoaming agent is a combination of BYK-024 and digao 902W, wherein the mass ratio of BYK-024 to digao 902W is 1: 1.
the wetting agent is DIgao 4100, which can be obtained by commercial purchase, and the manufacturer is Shenzhen Shenbo environmental protection science and technology Limited.
The neutralizer is 2-amino-2-methyl-1-propanol, and the 2-amino-2-methyl-1-propanol is commercially available from Dow USA under the trade name AMP-95.
The leveling agent is BYK-346.
The film-forming aid is dipropylene glycol butyl ether.
The bactericide is methylisothiazolinone.
The curing agent is DEH 805, which is commercially available and is produced by Chongqing Kaiyn chemical Co.
The preparation method of the water-based bi-component epoxy seal primer comprises the following steps:
(1) adding the aqueous epoxy dispersion into a container, adding a defoaming agent, a wetting agent, a surfactant, a neutralizer and a leveling agent at the rotation speed of 900rpm, dispersing at the rotation speed of 1300rpm, and dispersing for 10 min; premixing the film-forming assistant and water, then adding at the rotation speed of 950rpm, dispersing for 8min, then adding the bactericide, stirring uniformly at the rotation speed of 700rpm, filtering and packaging to obtain a main material;
(2) uniformly mixing the main material with a curing agent and water, wherein the mass ratio of the main material to the curing agent to the water is 1: 0.2: 0.6, thus obtaining the product.
Example 2
The preparation method provides a water-based bi-component epoxy seal primer, which comprises the following preparation raw materials in parts by weight: the component A comprises: 65 parts of aqueous epoxy dispersoid, 0.3 part of defoaming agent, 0.2 part of wetting agent, 0.1 part of surfactant, 0.01 part of neutralizer, 0.2 part of flatting agent, 2 parts of film-forming assistant, 0.01 part of bactericide and 12 parts of water, wherein the component B comprises the following components: 10 parts of curing agent.
The aqueous epoxy dispersion is a combination of a bisphenol A epoxy dispersion and an epoxidized meta-xylylenediamine dispersion, wherein the mass ratio of the bisphenol A epoxy dispersion to the epoxidized meta-xylylenediamine dispersion is 3: 1.03.
the bisphenol a epoxy dispersion is commercially available from the dow usa under the designation DER 330.
The epoxidized meta-xylylenediamine dispersion can be obtained by commercial production, and the manufacturer is Shenzhen Jia Dida chemical Co., Ltd, and the trademark is ERISYS GA-240.
The defoaming agent is a combination of BYK-024 and digao 902W, wherein the mass ratio of BYK-024 to digao 902W is 1: 1.
the wetting agent is DIgao 4100, which can be obtained by commercial purchase, and the manufacturer is Shenzhen Shenbo environmental protection science and technology Limited.
The neutralizer is 2-amino-2-methyl-1-propanol, and the 2-amino-2-methyl-1-propanol is commercially available from Dow USA under the trade name AMP-95.
The leveling agent is BYK-346.
The film-forming aid is dipropylene glycol butyl ether.
The bactericide is methylisothiazolinone.
The curing agent is DEH 805, which is commercially available and is produced by Chongqing Kaiyn chemical Co.
The preparation method of the water-based bi-component epoxy seal primer comprises the following steps:
(1) adding the aqueous epoxy dispersion into a container, adding a defoaming agent, a wetting agent, a surfactant, a neutralizer and a leveling agent at the rotation speed of 900rpm, dispersing at the rotation speed of 1300rpm, and dispersing for 10 min; premixing the film-forming assistant and water, then adding at the rotation speed of 950rpm, dispersing for 8min, then adding the bactericide, stirring uniformly at the rotation speed of 700rpm, filtering and packaging to obtain a main material;
(2) and uniformly mixing the main material, the curing agent and water, wherein the mass ratio of the main material to the curing agent to the water is 1: 0.2: 0.6.
Example 3
The preparation method provides a water-based bi-component epoxy seal primer, which comprises the following preparation raw materials in parts by weight: 85 parts of aqueous epoxy dispersoid, 0.9 part of defoaming agent, 0.8 part of wetting agent, 0.9 part of surfactant, 0.4 part of neutralizer, 0.7 part of flatting agent, 10 parts of film-forming assistant, 0.3 part of bactericide, 30 parts of water and a component B: 25 parts of curing agent.
The aqueous epoxy dispersion is a combination of a bisphenol A epoxy dispersion and an epoxidized meta-xylylenediamine dispersion, wherein the mass ratio of the bisphenol A epoxy dispersion to the epoxidized meta-xylylenediamine dispersion is 3: 1.03.
the bisphenol a epoxy dispersion is commercially available from the dow usa under the designation DER 330.
The epoxidized meta-xylylenediamine dispersion can be obtained by commercial production, and the manufacturer is Shenzhen Jia Dida chemical Co., Ltd, and the trademark is ERISYS GA-240.
The defoaming agent is a combination of BYK-024 and digao 902W, wherein the mass ratio of BYK-024 to digao 902W is 1: 1.
the wetting agent is DIgao 4100, which can be obtained by commercial purchase, and the manufacturer is Shenzhen Shenbo environmental protection science and technology Limited.
The neutralizer is 2-amino-2-methyl-1-propanol, and the 2-amino-2-methyl-1-propanol is commercially available from Dow USA under the trade name AMP-95.
The leveling agent is BYK-346.
The film-forming aid is dipropylene glycol butyl ether.
The bactericide is methylisothiazolinone.
The curing agent is DEH 805, which is commercially available and is produced by Chongqing Kaiyn chemical Co.
The preparation method of the water-based bi-component epoxy seal primer comprises the following steps:
(1) adding the aqueous epoxy dispersion into a container, adding a defoaming agent, a wetting agent, a surfactant, a neutralizer and a leveling agent at the rotation speed of 900rpm, dispersing at the rotation speed of 1300rpm, and dispersing for 10 min; premixing the film-forming assistant and water, then adding at the rotation speed of 950rpm, dispersing for 8min, then adding the bactericide, stirring uniformly at the rotation speed of 700rpm, filtering and packaging to obtain a main material;
(2) uniformly mixing the main material with a curing agent and water, wherein the mass ratio of the main material to the curing agent to the water is 1: 0.2: 0.6, thus obtaining the product.
Example 4
Similar to example 1, except that the aqueous epoxy dispersion was a bisphenol a epoxy dispersion, commercially available from dow, usa under the designation DER 330.
Example 5
Similar to example 1, except that the aqueous epoxy dispersion was epoxidized meta-xylylenediamine dispersion, which was commercially available from Shenzhen, Jia Di Da chemical Co., Ltd., brand number ERISYS GA-240.
Example 6
Similar to example 1, except that the aqueous epoxy dispersion was an acrylic dispersion purchased from Zibojiafeng chemical technology development Co., Ltd under the designation JF 2025.
Evaluation of Performance
1. And (3) sealing tannin effect test: after 6 non-polished wood boards containing tannic acid were taken, carefully polished, coated with the aqueous two-component epoxy sealer prepared in examples 1 to 6, dried at 35 ℃ for 4 hours, lightly polished, sprayed with a white topcoat on the surface, and 6 boards were placed in 50 ℃ ovens, respectively, and after dried for 72 hours, the tannic acid sealing effect was measured by comparison, and the results are shown in table 1 below.
TABLE 1 tannic acid effectiveness test
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| Effect | Is free of | Is free of | Is free of | Small amount of | Small amount of | A large number of |
Wherein, none means that there is no trace of tannin exudation; small amount means that a small amount of tannic acid exudes; by large is meant that a large amount of tannic acid exudes; as can be seen from Table 1, when the aqueous two-component epoxy sealer contains both the bisphenol A epoxy dispersion and the epoxidized meta-xylylenediamine dispersion, the effect of blocking tannin penetration is the best.
2. And (3) testing the comparative effect of the plate seal tannic acid: respectively taking 2 boards which are not polished and contain tannic acid, after careful polishing, dividing each board into three parts, respectively putting the two boards into an oven at 50 ℃, drying for 72 hours, and then carrying out comparative test on the tannic acid sealing effect.
the 21 st part of the right red rubber sheet material shows that the sheet material is not sprayed with any paint; part 22 shows that only one layer of water-based white primer is sprayed on the surface of the plate; part 23 shows that the surface of the plate is firstly sprayed with a layer of water-based white primer and finally sprayed with a layer of water-based white finish;
the comparative effect graph of the plate package tannic acid is shown in fig. 1, wherein the 23 rd part is obviously yellowed compared with the 3 rd part; in comparison with section 2 and section 22, section 22 turned significantly yellow. In conclusion, after the tannic acid-containing red rubber sheet which is not treated by the seal primer on the right is coated with the white product, yellow tannic acid obviously permeates from the white bottom, and after the aqueous two-component epoxy seal primer is sprayed, the whole coating does not have the phenomena of yellowing and bleeding, and the effect is obvious. According to the comparison effect of the left plate and the right plate, the aqueous double-component transparent epoxy seal primer can seal the tannic acid in the wood plate by self-crosslinking reaction and cannot penetrate out, and the sealing effect on the wood plate containing the tannic acid is excellent.
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (10)
1. The water-based bi-component epoxy seal primer is characterized by at least comprising the following preparation raw materials in parts by weight: 65-85 parts of aqueous epoxy dispersoid, 0.3-0.9 part of defoaming agent, 0.2-0.8 part of wetting agent, 0.1-0.9 part of surfactant, 0.01-0.4 part of neutralizer, 0.2-0.7 part of flatting agent, 2-10 parts of film-forming additive, 0.01-0.3 part of bactericide and 12-30 parts of water, wherein the component B comprises the following components: 10-25 parts of a curing agent.
2. The aqueous two-component epoxy sealer according to claim 1, wherein said aqueous epoxy dispersion is a bisphenol a epoxy dispersion and/or an epoxidized meta-xylylenediamine dispersion.
3. The aqueous two-component epoxy primer sealer according to claim 1 or 2, wherein the aqueous epoxy dispersion is a combination of a bisphenol a epoxy dispersion and an epoxidized meta-xylylenediamine dispersion, wherein a mass ratio of the bisphenol a epoxy dispersion and the epoxidized meta-xylylenediamine dispersion is 3: (0.8-1.2).
4. The waterborne two-component epoxy primer sealer according to claim 1, wherein the defoamer is selected from one or more of waterborne non-silicone fatty acid polymers, modified polyacrylic acid polymers, polyoxyethylene ethers, modified polysiloxanes.
5. The waterborne two-component epoxy primer sealer according to claim 1, wherein the wetting agent is polyether-modified polysiloxane and/or polyether-modified polydimethylsiloxane.
6. The waterborne two-component epoxy sealer according to claim 1, wherein the neutralizing agent is selected from one or more of triethylamine, triethanolamine, dimethylethanolamine, 2-amino-2-methyl-1-propanol.
7. The waterborne two-component epoxy sealer primer according to claim 1, wherein the coalescent is selected from one or more of propylene glycol butyl ether, dipropylene glycol methyl ether, propylene glycol phenyl ether.
8. The aqueous two-component epoxy sealer according to claim 1, wherein the biocide is selected from isothiazolinone and/or benzisothiazolinone.
9. The waterborne two-part epoxy primer sealer according to claim 1, wherein the curing agent is a waterborne amine curing agent.
10. Method for preparing a water-borne two-component epoxy primer sealer according to any one of claims 1-9, characterized in that it comprises the steps of:
(1) adding the aqueous epoxy dispersion into a container, adding a defoaming agent, a wetting agent, a surfactant, a neutralizer and a leveling agent at the rotating speed of 800-1000 rpm, dispersing at the rotating speed of 1200-1500rpm, and dispersing for 10 min; premixing the film-forming auxiliary agent and water, then adding the film-forming auxiliary agent and the water at the rotating speed of 800-1000 rpm, dispersing for 5-10min, then adding the bactericide, uniformly stirring at the rotating speed of 600-800 rpm, filtering and packaging to obtain a main material;
(2) and (2) uniformly mixing the main material, the curing agent and water, wherein the mass ratio of the main material to the curing agent to the water is 1: 0.2: 0.5-0.7.
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| CN114316738A (en) * | 2021-12-30 | 2022-04-12 | 湖南宏泰新材料有限公司 | Epoxy transparent primer coating for water-based carbon fiber substrate fishing rod |
| CN114950914A (en) * | 2022-05-05 | 2022-08-30 | 浙江万昌家具股份有限公司 | Treatment process of tannic acid on wood chair frame |
| CN116814132A (en) * | 2023-06-29 | 2023-09-29 | 深圳安盾海洋新材料有限公司 | Water-based waterproof anti-corrosion sealing primer and preparation method thereof |
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