CN111234632A - Water-based primer coating and using method thereof - Google Patents
Water-based primer coating and using method thereof Download PDFInfo
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- CN111234632A CN111234632A CN202010189175.7A CN202010189175A CN111234632A CN 111234632 A CN111234632 A CN 111234632A CN 202010189175 A CN202010189175 A CN 202010189175A CN 111234632 A CN111234632 A CN 111234632A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
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Abstract
The invention relates to a water-based primer coating and a using method thereof, the water-based primer coating comprises a first component and a second component, wherein the first component comprises 55-90 parts by mass of water-based hydroxypropyl resin/inorganic polymer and 5-9 parts by mass of dipropylene glycol butyl ether, the second component comprises 33-60 parts by mass of siloxane curing agent, and the water-based hydroxypropyl resin/inorganic polymer is organosilicon modified acrylic resin. The water-based primer coating is environment-friendly and is not easy to delaminate from a finish paint after being sprayed.
Description
Technical Field
The invention relates to the field of coatings, in particular to a water-based primer coating and a using method thereof.
Background
In recent years, the application range of the water-based wood coating is continuously expanded, and the used wood base materials are complicated; because the tannin in the wood substrate has good water solubility, the pigment in the finish paint is easy to pollute, the color of the finish paint coating is changed, for example, the white finish paint coating is yellow due to the exosmosis of the tannin, and the appearance is influenced.
At present, the main problem of preventing tannin from permeating outwards is to use an oil-based polyurethane coating to seal water-soluble tannin by adopting an oil-based primer, but the oil-based polyurethane is easy to volatilize and has poor environmental friendliness, and when a water-based finish is subsequently used, the paint expansion coefficients are different, and the primer and the finish are easy to delaminate.
Disclosure of Invention
In view of the above, there is a need for an environmentally friendly waterborne primer coating that does not readily delaminate from the topcoat.
The water-based primer coating comprises a first component and a second component, wherein the first component comprises 55-90 parts by mass of water-based hydroxypropyl resin/inorganic polymer and 5-9 parts by mass of dipropylene glycol butyl ether, the second component comprises 33-60 parts by mass of siloxane curing agent, and the water-based hydroxypropyl resin/inorganic polymer is organic silicon modified acrylic resin.
The components of the water-based primer coating do not contain oil-based polyurethane, so that the oil-based polyurethane is prevented from polluting the environment; meanwhile, the water-based primer coating is used as a water-based primer, the expansion coefficient of the water-based primer coating is similar to that of a finish paint, and the primer coating and the finish paint are not easy to delaminate in the using process. The water-based primer coating takes water-based hydroxypropyl resin/inorganic polymer which is easy to permeate into the interior of wood and is chelated with cations in the interior of the wood as a film forming substance, so that the tannin is fixed in the interior of the wood; and the cross-linking reaction of the water-based hydroxypropyl resin/inorganic polymer and the siloxane curing agent ensures that the formed primer has high compactness, good water resistance and strong sealing property.
In one embodiment, the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1: 1-1.5.
In one embodiment, the first component comprises 60-90 parts by mass of water-based hydroxypropyl resin/inorganic polymer and 5.5-9 parts by mass of dipropylene glycol butyl ether, and the second component comprises 37-60 parts by mass of siloxane curing agent.
In one embodiment, the first component further comprises 7.1 to 25 parts by mass of absolute ethyl alcohol.
In one embodiment, the first component further comprises 0.2-0.5 parts by mass of a wetting agent.
In one embodiment, the wetting agent is selected from at least one of silicone-based wetting agents and polyether-modified wetting agents.
In one embodiment, the first component further comprises 0.2-0.5 parts by mass of an antifoaming agent.
In one embodiment, the defoamer is selected from at least one of silicone defoamers and polyether modified defoamers.
In one embodiment, the first component further comprises 0.6 to 20 parts of water by mass.
The application method of the water-based primer coating comprises the following steps: the first component, the second component and 0.6-20 parts of water are mixed by mass and sprayed on the surface of a workpiece.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Some examples of the invention are given in the following. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
It should be noted that the parts in the present specification are parts by mass.
The water-based primer coating comprises a first component and a second component, wherein the first component comprises 55-90 parts by mass of water-based hydroxypropyl resin/inorganic polymer and 5-9 parts by mass of dipropylene glycol butyl ether, the second component comprises 33-60 parts by mass of siloxane curing agent, and the water-based hydroxypropyl resin/inorganic polymer is organic silicon modified acrylic resin.
The term "aqueous hydroxypropyl resin/inorganic polymer" as used herein refers to a hydroxypropyl group-containing polymer modified with an inorganic substance. The aqueous hydroxypropyl resin/inorganic polymer acts as a film forming material, whose cations readily penetrate into the wood and chelate with the tannins present in the wood, thus fixing them in the wood. In addition, the water-based hydroxypropyl resin/water-based hydroxypropyl of the inorganic polymer can also increase the toughness of the film layer after film formation. The molecular weight of the water-based hydroxypropyl resin/inorganic polymer is 5000-10000. Preferably, the molecular weight of the water-based hydroxypropyl resin/inorganic polymer is 8000-10000. The term "aqueous hydroxypropyl resin/inorganic polymer" as used herein refers to a polymer containing hydroxypropyl groups modified with inorganic substances. Further, the mass portion of the water-based hydroxypropyl resin/inorganic polymer is 60-90 portions. Preferably, the mass portion of the aqueous hydroxypropyl resin/inorganic polymer is 65 parts, 70 parts, 75 parts, 82 parts or 90 parts. Furthermore, the mass portion of the water-based hydroxypropyl resin/inorganic polymer is 75-90 portions.
Dipropylene glycol butyl ether (DPNB) acts as a solvent in the above-described waterborne primer coating. Furthermore, the mass part of the dipropylene glycol butyl ether in the water-based primer coating is 5.5-9 parts. Furthermore, the mass portion of the dipropylene glycol butyl ether is 7.5 to 9.
The siloxane curing agent functions as a film-forming crosslinker for the waterborne hydroxypropyl resin/inorganic polymer in the waterborne primer coating. Furthermore, the mass portion of the siloxane curing agent is 37 to 60 portions. Preferably, the mass part of the silicone curing agent is 37 parts, 40 parts, 50 parts, 55 parts or 60 parts. In one embodiment, the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1: 1-1.5. Further, the mass ratio of the siloxane curing agent to the aqueous hydroxypropyl resin/inorganic polymer is 1: 1.5. The film forming effect can be good by setting the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer according to the above setting.
In one embodiment, the first component comprises 60-90 parts by mass of water-based hydroxypropyl resin/inorganic polymer and 5.5-9 parts by mass of dipropylene glycol butyl ether, the second component comprises 37-60 parts by mass of siloxane curing agent, the water-based hydroxypropyl resin/inorganic polymer is selected from organosilicon modified acrylic resin, and the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1: 1-1.5.
In one embodiment, the first component further comprises 7.1 to 25 parts by mass of absolute ethyl alcohol. The function of the absolute ethyl alcohol is to quickly and effectively assist the penetration of the film forming substances and assist the film forming. Preferably, the mass portion of the absolute ethyl alcohol is 15 to 25.
In one embodiment, the first component further comprises a wetting agent in an amount of 0.2 to 0.5 parts by mass. Preferably, the wetting agent is 0.2 to 0.4 parts by mass. Further, the wetting agent is selected from at least one of a silicone wetting agent and a polyether modified wetting agent.
In one embodiment, the first component further comprises 0.2-0.5 parts by mass of an antifoaming agent. Preferably, the mass portion of the defoaming agent is 0.2 to 0.34. Further, the defoaming agent is selected from at least one of a silicone defoaming agent and a polyether modified defoaming agent.
In one embodiment, the first component further comprises 0.6 to 20 parts by mass of water. Further, the mass portion of the water is 0.6 to 10.
In one embodiment, the first component comprises 60 to 90 parts by mass of water-based hydroxypropyl resin/inorganic polymer, 5.5 to 9 parts by mass of dipropylene glycol butyl ether and 7.1 to 25 parts by mass of absolute ethyl alcohol, and the second component comprises 37 to 60 parts by mass of siloxane curing agent. Wherein the water-based hydroxypropyl resin/inorganic polymer is organic silicon modified acrylic resin, and the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1:1 to 1.5.
In one embodiment, the first component comprises 60 to 90 parts by mass of water-based hydroxypropyl resin/inorganic polymer, 5.5 to 9 parts by mass of dipropylene glycol butyl ether, 7.1 to 25 parts by mass of absolute ethyl alcohol and 0.2 to 0.5 part by mass of wetting agent, and the second component comprises 37 to 60 parts by mass of siloxane curing agent. Wherein the water-based hydroxypropyl resin/inorganic polymer is organic silicon modified acrylic resin, and the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1: 1.5.
in one embodiment, the first component comprises, by mass, 60 to 90 parts of a water-based hydroxypropyl resin/inorganic polymer, 5.5 to 9 parts of dipropylene glycol butyl ether, 7.1 to 25 parts of absolute ethyl alcohol, 0.2 to 0.5 part of a wetting agent and 0.2 to 0.5 part of an antifoaming agent, and the second component comprises 37 to 60 parts of a siloxane curing agent. Wherein the water-based hydroxypropyl resin/inorganic polymer is organic silicon modified acrylic resin, and the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1: 1.5.
in one embodiment, the first component comprises 75-90 parts by mass of water-based hydroxypropyl resin/inorganic polymer, 7.5-9 parts by mass of dipropylene glycol butyl ether, 15-25 parts by mass of absolute ethyl alcohol, 0.2-0.5 part by mass of wetting agent, 0.2-0.5 part by mass of defoaming agent and 0.6-20 parts by mass of water, and the second component comprises 37-60 parts by mass of siloxane curing agent. Wherein the water-based hydroxypropyl resin/inorganic polymer is organic silicon modified acrylic resin, and the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1: 1.5.
the components of the water-based primer coating do not contain oil-based polyurethane, so that the oil-based polyurethane is prevented from polluting the environment; meanwhile, the water-based primer coating is water-based and has a similar expansion coefficient with the finish paint, and the primer and the finish paint are not easy to delaminate in the using process. The water-based primer coating takes water-based hydroxypropyl resin/inorganic polymer which is easy to permeate into the interior of wood and is chelated with cations in the interior of the wood as a film forming substance, so that the tannin is fixed in the interior of the wood; and the cross-linking reaction of the water-based hydroxypropyl resin/inorganic polymer and the siloxane curing agent ensures that the primer after film formation has high compactness, better water resistance, stronger closure and better toughness.
The preparation method of the water-based primer coating comprises the following steps:
providing raw materials of a first component, and mixing the raw materials of the first component to obtain a first component; and
providing raw materials of a second component, and mixing the raw materials of the second component to obtain the second component.
Further, the raw materials are added one by one while stirring, and the mixture is stirred at a rotation speed of 500 to 800 rpm.
The preparation method of the water-based primer coating is simple and convenient, and is suitable for industrial production.
The application method of the water-based primer coating comprises the following steps:
the first component, the second component and 0.6-20 parts of water are mixed by mass parts and then sprayed on the surface of a workpiece.
Of course, when the first component includes 0.6 to 20 parts of water, the first component and the second component may be directly mixed and then sprayed.
The application method of the water-based primer coating is simple and convenient, and the components of the water-based primer coating do not contain oil-based polyurethane, so that the oil-based polyurethane is prevented from polluting the environment, and the water-based primer coating is high in environmental friendliness.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The following detailed description is given with reference to specific examples. The following examples are not specifically described, and other components except inevitable impurities are not included. The examples, which are not specifically illustrated, employ drugs and equipment, all of which are conventional in the art. The experimental procedures, in which specific conditions are not indicated in the examples, were carried out according to conventional conditions, such as those described in the literature, in books, or as recommended by the manufacturer.
The water-based hydroxypropyl resin/inorganic polymer in the following examples is PT1813A of Nanchang Yushi science and technology company, and the molecular weight of the water-based hydroxypropyl resin/inorganic polymer is 8000-10000; the organosilicon wetting agent is BYK-024 from BYK company; the silicone defoamer was TEGO 810. The siloxane curing agent is B3-5 of Nanchang Yushi science and technology company.
Example 1
(1) 50 parts of water-based hydroxypropyl resin/inorganic polymer, 20 parts of water, 5 parts of dipropylene glycol butyl ether (DPNB), 24.6 parts of absolute ethyl alcohol, 0.2 part of organosilicon wetting agent, 0.2 part of organosilicon antifoaming agent and 33 parts of siloxane curing agent are weighed respectively in parts by mass.
(2) Mixing 50 parts of water-based hydroxypropyl resin/inorganic polymer, 20 parts of water, 5 parts of dipropylene glycol butyl ether (DPNB), 24.6 parts of absolute ethyl alcohol, 0.2 part of organosilicon wetting agent and 0.2 part of organosilicon defoaming agent at the rotating speed of 500 revolutions per minute to obtain a first component; the second component was 33 parts of a silicone curing agent.
(3) And (3) taking the oil-based polyurethane as a positive control group, and taking the water-based primer coating formed by mixing the first component and the second component prepared in the step (2) as a test group to respectively perform yellowing degree tests. Specifically, the number of the pines of the positive control group and the test group is respectively 20, the coating of the positive control combined test group is respectively sprayed on the corresponding pines without deoiling treatment of each group, and the pines are dried for 4 hours; and then placing the mixture in an oven, drying the mixture for 7 days at 50 ℃, judging the yellowing degree by using a color difference instrument, and counting the result. Determining that the pine is qualified when the color difference change is within 2%; pine wood was judged to be unacceptable if the change in color difference was more than 2%, and was also visible to the naked eye if the change in color difference was more than 2%.
Tests show that pine trees with the color difference change of the test group within 2 percent account for 80 percent of the total number of the pine trees; the pine wood with the color difference change within 2 percent of the positive control group accounts for 90 percent of the total number of the pine wood in the group. The qualification rate of the test group is 80 percent; the percent of pass of the positive control group is 90 percent
Example 2
(1) 55 parts of water-based hydroxypropyl resin/inorganic polymer, 20 parts of water, 5.5 parts of dipropylene glycol butyl ether (DPNB), 19.1 parts of absolute ethyl alcohol, 0.2 part of organosilicon wetting agent, 0.2 part of organosilicon antifoaming agent and 37 parts of siloxane curing agent are weighed respectively in parts by mass.
(2) 55 parts of water-based hydroxypropyl resin/inorganic polymer, 20 parts of water, 5.5 parts of dipropylene glycol butyl ether (DPNB), 19.1 parts of absolute ethyl alcohol, 0.2 part of organosilicon wetting agent and 0.2 part of organosilicon defoaming agent are mixed under the condition that the rotating speed is 500 revolutions per minute to obtain a first component. The second component was 37 parts of a silicone curing agent.
(3) And (3) taking the oil-based polyurethane as a positive control group, and taking the water-based primer coating formed by mixing the first component and the second component prepared in the step (2) as a test group to respectively perform yellowing degree tests. Specifically, the number of the pines of the positive control group and the test group is respectively 20, the coating of the positive control combined test group is respectively sprayed on the corresponding pines without deoiling treatment of each group, and the pines are dried for 4 hours; and then placing the mixture in an oven, drying the mixture for 7 days at 50 ℃, judging the yellowing degree by using a color difference instrument, and counting the result. Determining that the pine is qualified when the color difference change is within 2%; pine wood was judged to be unacceptable if the change in color difference was more than 2%, and was also visible to the naked eye if the change in color difference was more than 2%.
Tests show that pine trees with the color difference change of the test group within 2 percent account for 90 percent of the total number of the pine trees; the pine wood with the color difference change within 2 percent of the positive control group accounts for 90 percent of the total number of the pine wood in the group. The qualification rate of the test group is 90 percent; the percent of pass of the positive control group is 90 percent
Example 3
(1) Respectively weighing 75 parts of water-based hydroxypropyl resin/inorganic polymer, 10 parts of water, 7.5 parts of dipropylene glycol butyl ether (DPNB), 7.1 parts of absolute ethyl alcohol, 0.2 part of organosilicon wetting agent, 0.2 part of organosilicon antifoaming agent and 50 parts of siloxane curing agent in parts by mass.
(2) 75 parts of water-based hydroxypropyl resin/inorganic polymer, 10 parts of water, 7.5 parts of dipropylene glycol butyl ether (DPNB), 7.1 parts of absolute ethyl alcohol, 0.2 part of organosilicon wetting agent and 0.2 part of organosilicon defoaming agent are mixed under the condition that the rotating speed is 500 revolutions per minute to obtain a first component. The second component was 50 parts of a silicone curing agent.
(3) And (3) taking the oil-based polyurethane as a positive control group, and taking the water-based primer coating formed by mixing the first component and the second component prepared in the step (2) as a test group to respectively perform yellowing degree tests. Specifically, the number of the pines of the positive control group and the test group is respectively 20, the coating of the positive control combined test group is respectively sprayed on the corresponding pines without deoiling treatment of each group, and the pines are dried for 4 hours; and then placing the mixture in an oven, drying the mixture for 7 days at 50 ℃, judging the yellowing degree by using a color difference instrument, and counting the result. Determining that the pine is qualified when the color difference change is within 2%; pine wood was judged to be unacceptable if the change in color difference was more than 2%, and was also visible to the naked eye if the change in color difference was more than 2%.
Tests show that pine trees with the color difference change of the test group within 2 percent account for 95 percent of the total number of the pine trees; the pine wood with the color difference change within 2 percent of the positive control group accounts for 90 percent of the total number of the pine wood in the group. The qualification rate of the test group is 95 percent; the positive control group had a yield of 90%.
Example 4
(1) By mass, respectively weighing 90 parts of water-based hydroxypropyl resin/inorganic polymer, 0.6 part of water, 9 parts of dipropylene glycol butyl ether (DPNB), 0.2 part of organosilicon wetting agent, 0.2 part of organosilicon antifoaming agent and 60 parts of siloxane curing agent.
(2) 90 parts of water-based hydroxypropyl resin/inorganic polymer, 0.6 part of water, 9 parts of dipropylene glycol butyl ether (DPNB), 0.2 part of organosilicon wetting agent and 0.2 part of organosilicon defoamer are mixed under the condition that the rotating speed is 500 revolutions per minute to obtain a first component. The second component was 60 parts of a silicone curing agent.
(3) And (3) taking the oil-based polyurethane as a positive control group, and taking the water-based primer coating formed by mixing the first component and the second component prepared in the step (2) as a test group to respectively perform yellowing degree tests. Specifically, the number of the pines of the positive control group and the test group is respectively 20, the coating of the positive control combined test group is respectively sprayed on the corresponding pines without deoiling treatment of each group, and the pines are dried for 4 hours; and then placing the mixture in an oven, drying the mixture for 7 days at 50 ℃, judging the yellowing degree by using a color difference instrument, and counting the result. Determining that the pine is qualified when the color difference change is within 2%; pine wood was judged to be unacceptable if the change in color difference was more than 2%, and was also visible to the naked eye if the change in color difference was more than 2%.
Tests show that pine trees with the color difference change of the test group within 2 percent account for 100 percent of the total number of the pine trees; the pine wood with the color difference change within 2 percent of the positive control group accounts for 90 percent of the total number of the pine wood in the group. The qualification rate of the test group is 100 percent; the positive control group had a yield of 90%.
Example 5
(1) By mass, respectively weighing 90 parts of water-based hydroxypropyl resin/inorganic polymer, 4 parts of water, 5 parts of dipropylene glycol butyl ether (DPNB), 0.5 part of organosilicon wetting agent, 0.5 part of organosilicon antifoaming agent and 60 parts of siloxane curing agent.
(2) 90 parts of water-based hydroxypropyl resin/inorganic polymer, 4 parts of water, 5 parts of dipropylene glycol butyl ether (DPNB), 0.5 part of organosilicon wetting agent and 0.5 part of organosilicon antifoaming agent are mixed under the condition that the rotating speed is 500 revolutions per minute to obtain a first component. The second component was 60 parts of a silicone curing agent.
(3) And (3) taking the oil-based polyurethane as a positive control group, and taking the water-based primer coating formed by mixing the first component and the second component prepared in the step (2) as a test group to respectively perform yellowing degree tests. Specifically, the number of the pines of the positive control group and the test group is respectively 20, the coating of the positive control combined test group is respectively sprayed on the corresponding pines without deoiling treatment of each group, and the pines are dried for 4 hours; and then placing the mixture in an oven, drying the mixture for 7 days at 50 ℃, judging the yellowing degree by using a color difference instrument, and counting the result. Determining that the pine is qualified when the color difference change is within 2%; pine wood was judged to be unacceptable if the change in color difference was more than 2%, and was also visible to the naked eye if the change in color difference was more than 2%.
Tests show that pine trees with the color difference change of the test group within 2 percent account for 90 percent of the total number of the pine trees; the pine wood with the color difference change within 2 percent of the positive control group accounts for 90 percent of the total number of the pine wood in the group. The qualification rate of the test group is 90 percent; the positive control group had a yield of 90%.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The water-based primer coating is characterized by comprising a first component and a second component, wherein the first component comprises 55-90 parts by mass of water-based hydroxypropyl resin/inorganic polymer and 5-9 parts by mass of dipropylene glycol butyl ether, the second component comprises 33-60 parts by mass of siloxane curing agent, and the water-based hydroxypropyl resin/inorganic polymer is organic silicon modified acrylic resin.
2. The water-based primer coating as claimed in claim 1, wherein the mass ratio of the siloxane curing agent to the water-based hydroxypropyl resin/inorganic polymer is 1: 1-1.5.
3. The water-based primer coating according to claim 1, wherein the first component comprises 60 to 90 parts by mass of water-based hydroxypropyl resin/inorganic polymer and 5.5 to 9 parts by mass of dipropylene glycol butyl ether, and the second component comprises 37 to 60 parts by mass of siloxane curing agent.
4. The water-based primer coating according to any one of claims 1 to 3, characterized in that the first component further comprises 7.1 to 25 parts by mass of absolute ethyl alcohol.
5. The water-based primer coating according to claim 4, wherein the first component further comprises 0.2 to 0.5 parts by mass of a wetting agent.
6. The water-based primer coating according to claim 5, wherein the wetting agent is at least one selected from the group consisting of silicone-based wetting agents and polyether-modified wetting agents.
7. The water-based primer coating according to claim 5, characterized in that the first component further comprises 0.2 to 0.5 parts by mass of an antifoaming agent.
8. The water-based primer coating according to claim 7, wherein the defoaming agent is at least one selected from the group consisting of a silicone defoaming agent and a polyether modified defoaming agent.
9. The water-based primer coating according to any one of claims 1 to 3, characterized in that the first component further comprises 0.6 to 20 parts by mass of water.
10. The method of using the water-based primer coating of any one of claims 1 to 8, comprising the steps of: the first component, the second component and 0.6-20 parts of water are mixed by mass and sprayed on the surface of a workpiece.
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| CN111925698A (en) * | 2020-07-16 | 2020-11-13 | 珠海展辰新材料股份有限公司 | Water-based woodenware coating and preparation method thereof |
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| CN111925698A (en) * | 2020-07-16 | 2020-11-13 | 珠海展辰新材料股份有限公司 | Water-based woodenware coating and preparation method thereof |
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