CN110205011B - High-brightness high-tolerance water-based gloss finish without generating dark bubbles and miliaria, and preparation method and application thereof - Google Patents
High-brightness high-tolerance water-based gloss finish without generating dark bubbles and miliaria, and preparation method and application thereof Download PDFInfo
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- CN110205011B CN110205011B CN201910549687.7A CN201910549687A CN110205011B CN 110205011 B CN110205011 B CN 110205011B CN 201910549687 A CN201910549687 A CN 201910549687A CN 110205011 B CN110205011 B CN 110205011B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/722—Combination of two or more aliphatic and/or cycloaliphatic polyisocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
Abstract
The invention provides a water-based glossy finish paint, which comprises the following components: a component A and a component B; the component A comprises 50-110 parts by weight of water-based hydroxyl acrylic resin, 3-6 parts by weight of cosolvent, 0.2-0.5 part by weight of wetting agent, 0.2-0.5 part by weight of defoaming agent, 0.2-0.6 part by weight of thickening agent, 0.3-0.5 part by weight of mildew preventive, 0-25 parts by weight of color paste and water; the component B comprises 60-110 parts by weight of hydrophilic modified isophorone diisocyanate and hexamethylene diisocyanate, 15-30 parts by weight of propylene glycol methyl ether acetate and 0.5-2 parts by weight of a water removing agent. The paint provided by the invention has the advantages of higher brightness, environmental protection, yellowing resistance, higher hardness, water resistance, chemical resistance and other performances; and the paint has high temperature tolerance, can be cured at normal temperature without miliaria, has high fullness of paint films and almost no hidden bubbles in the paint films, and is very suitable for coating production of bathroom cabinets.
Description
Technical Field
The invention relates to the technical field of water-based gloss finish, in particular to water-based gloss finish, a preparation method and application thereof, and especially relates to water-based gloss finish with high brightness, high resistance and no hidden bubbles or miliaria, and a preparation method and application thereof.
Background
The paint is a continuous solid film which is coated on the surface of a protected or decorated object and can form firm adhesion with the object to be coated, also called paint film or coating, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding or not adding pigment, filler, corresponding auxiliary agent and using organic solvent or water.
The paint has many categories, wherein the categories are classified according to the product form and mainly include: solvent-based coatings, water-based coatings, powder-based coatings, high-solids coatings, metallic coatings, pearlescent coatings, and solventless coatings; the brightness of the coating film can be dull, flat, matte and high (bright). The construction method is divided into the following steps: putty, primer, finish and the like. The primer is a coating directly applied to a substrate in multi-layer coating. The adhesive is mainly used for sealing a white substrate (wood), balancing materials, increasing adhesion of a finish coating and the like. The top coat, also called finish coat, is the last coat to be applied in multilayer coating, should have good resistance to external conditions, must have necessary hue and decorativeness, and has protective effect on the base coat. The decorative effect and weather resistance of the finish are not only dependent on the binder used, but also are very dependent on the pigment used and the formulation process.
With the increasing awareness of the society on environmental protection, the environmental protection water paint is indispensable to replace paint. The water paint is a paint taking water as a dissolving medium, has the advantages of no toxicity, environmental protection, no odor, few volatile matters, no combustion, no explosion and the like, and is a green and environment-friendly product without using an organic solvent as a diluent. Meanwhile, with the improvement of the life quality of people, most people have higher and higher requirements on home decoration, the decoration of a toilet and a kitchen is an important part of the home decoration, and high-gloss paint is mostly used in the aspect of coating of a bathroom cabinet.
Therefore, more and more enterprises adopt the water-based high-brightness wood lacquer to meet the environmental protection requirements of customers and the enterprises. However, the existing water-based high-gloss woodware coating in the market has various defects, such as insufficient brightness, poor tolerance, and especially miliaria, dark bubbles and the like easily generated in the drying process, so that the overall coating effect is greatly influenced.
Therefore, how to research an aqueous woodenware coating with high brightness and high resistance and without miliaria and dark bubbles is one of the problems to be solved by manufacturers with prospective consciousness in the industry.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide an aqueous top-coat paint, a preparation method and applications thereof, and in particular to an aqueous top-coat paint with high brightness, high resistance and no blister or miliaria. The high-gloss water-based wood finish provided by the invention has the advantages that the brightness can reach more than 95%, the resistance of a paint film is good, and prickly heat and dark bubbles are not generated in the drying process.
The invention provides a water-based glossy finish paint, which comprises the following components: a component A and a component B;
the component A is as follows:
the component B is as follows:
60-110 parts by weight of a hydrophilic modified diisocyanate curing agent;
15-30 parts by weight of propylene glycol methyl ether acetate;
0.5-2 parts by weight of a water removing agent;
the hydrophilic modified diisocyanate curing agent comprises hydrophilic modified isophorone diisocyanate and hydrophilic modified hexamethylene diisocyanate.
Preferably, the mass ratio of the component A to the component B is 100: (20-30);
the aqueous hydroxyl acrylic resin comprises high hydroxyl acrylic resin and/or low hydroxyl acrylic resin;
the hydroxyl content of the high-hydroxyl acrylic resin is 3-4%;
the hydroxyl content of the low-hydroxyl acrylic resin is 1-2%.
Preferably, the aqueous hydroxy acrylic resin comprises a high hydroxy acrylic resin and a low hydroxy acrylic resin;
the using amount of the high-hydroxyl acrylic resin is 30-60 parts by weight;
the dosage of the low-hydroxyl acrylic resin is 20-50 parts by weight;
the solid content of the high-hydroxyl acrylic resin is 40-47%;
the solid content of the low-hydroxyl acrylic resin is 40-45%.
Preferably, the amount of the hydrophilic modified isophorone diisocyanate is 30-50 parts by weight;
the amount of the hydrophilic modified hexamethylene diisocyanate is 30-60 parts by weight;
the water-based varnish is water-based woodware varnish.
Preferably, the co-solvent comprises one or more of texanol, dipropylene glycol butyl ether, dipropylene glycol methyl ether, and propylene glycol;
the wetting agent comprises tego 4200 and/or tego wet 270;
the antifoaming agent comprises BYK028 and/or tego 902W;
the thickener comprises TT615 and/or OS 6050;
the mildew preventive comprises one or more of BEK-200L, Polyphase AF3, Polyphase PW40 and Polyphase 689;
the color paste comprises aqueous titanium white paste;
the water removing agent comprises one or more OF Additive Ti, Additive OF and OMG Additive TI.
The invention also provides a preparation method of the water-based glossy finish paint, which comprises the following steps:
1) adding a cosolvent, a wetting agent, a mildew preventive, a thickening agent and a defoaming agent into the water-based hydroxyl acrylic resin, and mixing to obtain a component A;
carrying out second mixing on the hydrophilic modified diisocyanate curing agent, propylene glycol methyl ether acetate and a water removing agent to obtain a component B;
when the water-based glossy finish paint is used, the component A and the component B obtained in the step are combined to obtain the water-based glossy finish paint.
Preferably, the fineness of the component A is less than or equal to 10 μm;
the mixing time is 30-60 min;
the mixing speed is 800-1000 r/min;
the second mixing time is 30-60 min;
the rotating speed of the second mixing is 1000-1500 r/min;
the raw materials added into the water-based hydroxyl acrylic resin also comprise color paste.
Preferably, the preparation steps of the component A are as follows:
a) premixing the filtered water-based hydroxyl acrylic resin and a defoaming agent to obtain a mixture;
b) slowly adding a cosolvent, a wetting agent, a mildew preventive and a thickening agent into the mixture obtained in the step, and mixing to obtain a component A;
the second mixing is carried out under a dry condition;
the component B needs to be stored under anhydrous and closed conditions.
Preferably, the fineness of the filtered water-based hydroxyl acrylic resin is less than or equal to 10 microns;
the premixing time is 30-60 min;
the rotation speed of the premixing is 1500-1800 r/min;
the conditions under which step b) is carried out are:
and (c) taking a mixture sample, dripping a wetting agent, spraying, observing whether the appearance of the coating film is shrinkage cavity or not, and performing the step b) after confirming that no shrinkage cavity exists.
The invention also provides the application of the water-based gloss finish paint in any one of the technical schemes or the water-based gloss finish paint prepared by the preparation method in any one of the technical schemes in the furniture coating process;
the furniture comprises a sanitary cabinet.
The invention provides a water-based glossy finish paint, which comprises the following components: a component A and a component B; the component A comprises 50-110 parts by weight of water-based hydroxyl acrylic resin, 3-6 parts by weight of cosolvent, 0.2-0.5 part by weight of wetting agent, 0.2-0.5 part by weight of defoaming agent, 0.2-0.6 part by weight of thickening agent, 0.3-0.5 part by weight of mildew preventive, 0-25 parts by weight of color paste and water; the component B comprises 60-110 parts by weight of hydrophilic modified diisocyanate curing agent, 15-30 parts by weight of propylene glycol methyl ether acetate and 0.5-2 parts by weight of water removing agent; the hydrophilic modified diisocyanate curing agent comprises hydrophilic modified isophorone diisocyanate and hydrophilic modified hexamethylene diisocyanate. Compared with the prior art, the invention aims at the problems of insufficient brightness, poor tolerance, especially easy miliaria and dark bubbles in the drying process of the existing water-based high-brightness wood lacquer, and the like, and the whole coating effect is greatly influenced.
The water-based finishing coat with the bright light is high in brightness, good in resistance of a paint film and free of miliaria and dark bubbles in the drying process. The invention overcomes the problems of too large addition amount, low gloss, poor compatibility and slow reaction of a hydrophilic modified IPDI curing agent in the prior art, does not bias the technology of applying the hydrophilic modified IPDI curing agent to water-based wood paint, creatively shares water-based HDI and IPDI, mixes the HDI and the IPDI according to a specific proportion, fully exerts the characteristics of high hardness and good tolerance of the IPDI curing agent after drying, and effectively solves the problems that the water-based HDI curing agent has low hardness and is easy to generate miliaria and dark bubbles when being thick-coated and can not be solved by combining the HDI curing agent and the HDI curing agent as a curing agent of high-gloss water-based wood finish paint, and can greatly improve the hardness, the dark bubbles, the miliaria and the tolerance of the bright paint. The water-based bright finish paint is further obtained by specially selecting and proportioning various additives, has higher brightness, can be compared favorably with oil paint, is more environment-friendly and yellowing-resistant compared with the oil paint, and has stronger performances of hardness, water resistance, chemical resistance and the like; furthermore, the ordinary water-based bright wood paint is very easy to generate miliaria after the temperature exceeds 30 ℃, but the water-based bright finishing paint has high temperature tolerance, can be cured at normal temperature (0-40 ℃) without generating miliaria, has high fullness of a paint film, almost has no hidden bubbles in the paint film, and is very suitable for coating production of bathroom cabinets. In addition, the preparation method of the water-based high-brightness water-based wood coating provided by the invention is simple in process, strong in operability, capable of realizing continuous production and suitable for popularization and application of industrial scale production.
Experimental results show that the high-gloss water-based wood finish provided by the invention not only has the brightness of over 95 percent, but also has good resistance of a paint film and does not generate miliaria and dark bubbles in the drying process.
Detailed Description
For a further understanding of the invention, preferred embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are included merely to further illustrate the features and advantages of the invention and are not intended to limit the invention to the claims.
All of the starting materials of the present invention, without particular limitation as to their source, may be purchased commercially or prepared according to conventional methods well known to those skilled in the art.
All the raw materials of the present invention are not particularly limited in their purity, and analytical purification is preferably employed in the present invention.
All the raw materials of the invention have the same trade marks as the conventional trade marks in the field, each trade mark is clear and definite in the field of related application, and the raw materials can be purchased from the market by the technicians in the field according to the trade marks and the corresponding application.
The invention provides a water-based glossy finish paint, which comprises the following components: a component A and a component B;
the component A is as follows:
the component B is as follows:
60-110 parts by weight of a hydrophilic modified diisocyanate curing agent;
15-30 parts by weight of propylene glycol methyl ether acetate;
0.5-2 parts by weight of a water removing agent;
the hydrophilic modified diisocyanate curing agent comprises hydrophilic modified isophorone diisocyanate and hydrophilic modified hexamethylene diisocyanate.
The component A comprises 50-110 parts by weight of water-based hydroxyl acrylic resin, 3-6 parts by weight of cosolvent, 0.2-0.5 part by weight of wetting agent, 0.2-0.5 part by weight of defoaming agent, 0.2-0.6 part by weight of thickening agent, 0.3-0.5 part by weight of mildew preventive, 0-25 parts by weight of color paste and water. Wherein the content of the first and second substances,
the adding amount of the water-based acrylic resin is 50-110 parts by weight, preferably 55-105 parts by weight, more preferably 60-100 parts by weight, more preferably 65-95 parts by weight, more preferably 70-90 parts by weight, and more preferably 75-85 parts by weight.
The concrete choice of the waterborne acrylic resin is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to production conditions, use conditions and performance requirements, and the waterborne acrylic resin preferably comprises high-hydroxyl acrylic resin and/or low-hydroxyl acrylic resin, and particularly preferably comprises high-hydroxyl acrylic resin and low-hydroxyl acrylic resin in order to better ensure the performance, the use effect and the preparation process of the waterborne glossy finish paint.
The definition of the high hydroxyl acrylic resin is not particularly limited in principle, and can be defined by the conventional definition of the high hydroxyl acrylic resin well known to those skilled in the art, and the person skilled in the art can select and adjust the definition according to the production situation, the use situation and the performance requirement. The hydroxyl content of the high hydroxyl acrylic resin is preferably 3 to 4 percent, more preferably 3.2 to 3.8 percent, and more preferably 3.4 to 3.6 percent. The solid content of the high hydroxyl acrylic resin is preferably 40-47%, more preferably 41-46%, more preferably 42-45%, and more preferably 43-44%. Specifically, the present invention is not particularly limited to a specific source of the high hydroxyl acrylic resin, and the high hydroxyl acrylic resin may be prepared or purchased according to a conventional method by those skilled in the art, and is preferably a commercially available aqueous acrylic polyol dispersion having a trade name of a2601, manufactured by kostew (bayer), with a solid content of preferably 44% to 47% and a hydroxyl content of preferably 3.9%.
The amount of the high hydroxyl acrylic resin is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to production conditions, use conditions and performance requirements, and in order to better ensure the performance, use effect and preparation process of the water-based glossy finish paint, the amount of the high hydroxyl acrylic resin is preferably 30-60 parts by weight, more preferably 35-55 parts by weight, more preferably 40-50 parts by weight, and more preferably 43-48 parts by weight.
The definition of the low-hydroxyl acrylic resin is not particularly limited in principle, and can be defined by the conventional definition of the low-hydroxyl acrylic resin well known to those skilled in the art, and the selection and adjustment can be made by those skilled in the art according to the production situation, the use situation and the performance requirement. The hydroxyl content of the low-hydroxyl acrylic resin is preferably 1-2%, more preferably 1.2-1.8%, and more preferably 1.4-1.6%. The solid content of the low-hydroxyl acrylic resin is preferably 40-45%, more preferably 41-44%, and more preferably 42-43%. Specifically, the present invention is not particularly limited to the specific source of the low-hydroxyl acrylic resin, and the low-hydroxyl acrylic resin is preferably an aqueous hydroxy propionic acid resin having a trade name of PA-4801, manufactured by Guangzhi New materials science and technology Co., Ltd, which is commercially available, and has a solid content of preferably 40% and a hydroxyl content of preferably 1.8%, and can be prepared or purchased according to a conventional method by those skilled in the art.
The amount of the low-hydroxyl acrylic resin is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to production conditions, use conditions and performance requirements, in order to better ensure the performance, use effect and preparation process of the water-based glossy finish, the amount of the low-hydroxyl acrylic resin is preferably 20-50 parts by weight, more preferably 25-45 parts by weight, more preferably 30-40 parts by weight, and more preferably 33-37 parts by weight.
The addition amount of the cosolvent is 3-6 parts by weight, preferably 3.5-5.5 parts by weight, more preferably 4-5 parts by weight, and more preferably 4.2-4.8 parts by weight.
The invention is not limited in particular to the specific choice of the cosolvent, which can be selected and adjusted by the skilled person according to the production conditions, the use conditions and the performance requirements, and the invention is used for better ensuring the performance, the use effect and the preparation process of the waterborne glossy finish paint. More specifically, the present invention is not particularly limited to a specific source of the cosolvent, and those skilled in the art can prepare or purchase the cosolvent according to a conventional method, wherein the Texanol of the present invention is preferably Texanol manufactured by Eastman company, and the dipropylene glycol butyl ether of the present invention is preferably DPnB manufactured by dow company, usa.
The addition amount of the wetting agent is 0.2 to 0.5 part by weight, preferably 0.22 to 0.48 part by weight, more preferably 0.25 to 0.45 part by weight, more preferably 0.28 to 0.43 part by weight, and more preferably 0.3 to 0.4 part by weight.
The specific choice of the wetting agent is not particularly limited in the present invention, and can be selected and adjusted by those skilled in the art according to the production conditions, the use conditions and the performance requirements, and the wetting agent preferably comprises tego 4200 and/or tego wet 270, more preferably tego wet 4200, in the present invention, for better ensuring the performance, the use effect and the preparation process of the waterborne glossy finish. More specifically, the present invention is not particularly limited with respect to the specific source of the wetting agent, and those skilled in the art can prepare or purchase the wetting agent according to conventional methods, and the present invention is preferably a wetting agent manufactured by digao corporation under the trade name tego wet 4200.
The addition amount of the defoaming agent is 0.2-0.5 part by weight, preferably 0.25-0.45 part by weight, more preferably 0.3-0.4 part by weight, and more preferably 0.32-0.38 part by weight.
The concrete choice of the defoaming agent is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to production conditions, use conditions and performance requirements, and the defoaming agent preferably comprises BYK028 and/or tego airex902w, more preferably BYK028 or tego airex902w, so as to better ensure the performance, the use effect and the preparation process of the water-based glossy finish paint. More specifically, the present invention is not particularly limited to a specific source of the antifoaming agent, and those skilled in the art can prepare or purchase the antifoaming agent according to a conventional method, and the present invention is preferably an antifoaming agent manufactured by BYK028, manufactured by BYK, germany, or tego airex902w, manufactured by digao. Wherein BYK028 is an organic silicon defoamer produced by German Bike chemistry, light gray liquid and 100 percent of effective components. Tego airex902w is a high efficiency defoamer produced by Digao, Germany.
The thickener of the present invention is added in an amount of 0.2 to 0.6 part by weight, preferably 0.25 to 0.55 part by weight, more preferably 0.3 to 0.5 part by weight, more preferably 0.35 to 0.45 part by weight, more preferably 0.37 to 0.43 part by weight.
The concrete choice of the thickener is not particularly limited in principle, and can be selected and adjusted by the skilled person according to the production conditions, the use conditions and the performance requirements, and the thickener preferably comprises TT615 and/or OS6050, more preferably TT615 or OS6050, in order to better ensure the performance, the use effect and the preparation process of the water-based glossy finish paint. More specifically, the present invention is not particularly limited with respect to the specific source of the thickener, and those skilled in the art can prepare or purchase the thickener according to conventional methods, and the thickener of the present invention is preferably a Guangzhou chemical product having a trade name of OS6050, a Dow specialty chemical product of TT 615.
The addition amount of the mildew inhibitor is 0.3-0.5 weight part, preferably 0.32-0.48 weight part, more preferably 0.35-0.45 weight part, and more preferably 0.37-0.43 weight part.
The specific choice of the mildew preventive is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to production conditions, use conditions and performance requirements, and in order to better ensure the performance, use effect and preparation process of the water-based glossy finish, the mildew preventive preferably comprises one or more of BEK-200L, polypase AF3, polypase PW40 and polypase 689, more preferably BEK-200L, polypase AF3, polypase PW40 or polypase 689, and even more preferably BEK-200L. More specifically, the source of the mildew preventive is not particularly limited, and the mildew preventive can be prepared or purchased by a person skilled in the art according to a conventional method, and the mildew preventive is preferably a mildew preventive manufactured by Guangzhou chemical industry and having a trademark BEK-200L.
The addition amount of the color paste is 0-25 parts by weight, preferably 5-25 parts by weight, more preferably 12-24 parts by weight, more preferably 15-23 parts by weight, and more preferably 18-21 parts by weight.
The specific selection of the color paste is not particularly limited in principle, and the color paste can be selected and adjusted by a person skilled in the art according to the production condition, the use condition and the performance requirement. The concrete source of the color paste is not particularly limited by the invention, the color paste can be prepared or purchased by the technicians in the field according to the conventional method, and the invention is preferably the 1008-SI aqueous titanium white paste produced by Guangzhou Kedi.
The water is not particularly limited in the present invention, but is within the concept well known to those skilled in the art, and the present invention is preferably deionized water.
The water-based glossy finish paint comprises a component B, wherein the component B comprises 60-110 parts by weight of hydrophilic modified diisocyanate curing agent, 15-30 parts by weight of propylene glycol methyl ether acetate and 0.5-2 parts by weight of water removing agent. Wherein the content of the first and second substances,
the hydrophilic modified diisocyanate curing agent is added in an amount of 60 to 110 parts by weight, preferably 65 to 105 parts by weight, more preferably 70 to 100 parts by weight, more preferably 75 to 95 parts by weight, and more preferably 80 to 90 parts by weight.
In the present invention, in order to better ensure the performance, the use effect and the preparation process of the waterborne glossy finish, the hydrophilically modified diisocyanate curing agent preferably comprises hydrophilically modified isophorone diisocyanate and/or hydrophilically modified hexamethylene diisocyanate, and particularly preferably comprises hydrophilically modified isophorone diisocyanate and hydrophilically modified hexamethylene diisocyanate.
In the invention, the amount of the hydrophilic modified isophorone diisocyanate is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to production conditions, use conditions and performance requirements, and in order to better ensure the performance, use effect and preparation process of the water-based glossy finish paint, the amount of the hydrophilic modified isophorone diisocyanate added is preferably 30-50 parts by weight, more preferably 32-48 parts by weight, more preferably 35-45 parts by weight, and more preferably 38-43 parts by weight. More specifically, the present invention does not specifically limit the specific source of the hydrophilic modified isophorone diisocyanate (IPDI), which can be prepared or purchased according to conventional methods by those skilled in the art, and is preferably hydrophilic modified isophorone diisocyanate (IPDI) having a brand number of 4098-71, which is produced by wanhua chemistry.
The amount of the hydrophilic modified hexamethylene diisocyanate is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to production conditions, use conditions and performance requirements, and in order to better ensure the performance, use effect and preparation process of the water-based glossy finish paint, the amount of the hydrophilic modified hexamethylene diisocyanate added is preferably 30-60 parts by weight, more preferably 35-55 parts by weight, more preferably 40-50 parts by weight, and more preferably 43-48 parts by weight. More specifically, the present invention does not particularly limit the specific source of the hydrophilically modified hexamethylene diisocyanate, which can be prepared or purchased according to a conventional method by those skilled in the art, and is preferably a hydrophilically modified Hexamethylene Diisocyanate (HDI) manufactured by bayer having a trade name of 2655.
The propylene glycol methyl ether acetate is added in an amount of 15-30 parts by weight, preferably 18-28 parts by weight, and more preferably 20-25 parts by weight.
The specific source of the propylene glycol methyl ether acetate is not particularly limited in principle, and the propylene glycol methyl ether acetate (PMA) can be prepared or purchased by a person skilled in the art according to a conventional method, and is preferably PMA produced by Dow chemical company in order to better ensure the performance, the using effect and the preparation process of the water-based glossy finish paint.
The addition amount of the water removing agent is 0.5-2 parts by weight, preferably 0.7-1.8 parts by weight, more preferably 0.8-1.5 parts by weight, and more preferably 1-1.3 parts by weight.
The specific selection OF the water removing agent is not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to the production condition, the use condition and the performance requirement, in order to better ensure the performance, the use effect and the preparation process OF the water-based bright finish paint, the water removing agent preferably comprises one or more OF Additive Ti, Additive OF and OMG Additive TI, more preferably Additive Ti, Additive OF or OMG Additive TI, and more preferably Additive Ti. More specifically, the specific source of the water-removing agent is not particularly limited, and the water-removing agent can be prepared or purchased by a person skilled in the art according to a conventional method, and the water-removing agent produced by Bayer and having the brand name of Additive Ti is preferred in the invention.
The water-based gloss finish paint comprises a component A and a component B, the specific proportion of the component A and the component B is not particularly limited in principle, and the water-based gloss finish paint can be selected and adjusted by a person skilled in the art according to the product condition, the use condition and the performance requirement, in order to better ensure the performance, the use effect and the preparation process of the water-based gloss finish paint, the mass ratio of the component A to the component B is preferably 100: (20-30), more preferably 100: (22-28), more preferably 100: (24-26).
The invention also provides a preparation method of the water-based glossy finish paint, which comprises the following steps:
1) adding a cosolvent, a wetting agent, a mildew preventive, a thickening agent and a defoaming agent into the water-based hydroxyl acrylic resin, and mixing to obtain a component A;
carrying out second mixing on the hydrophilic modified diisocyanate curing agent, propylene glycol methyl ether acetate and a water removing agent to obtain a component B;
when the water-based glossy finish paint is used, the component A and the component B obtained in the step are combined to obtain the water-based glossy finish paint.
In the preparation method of the invention, the specific preferred scheme of the raw materials and the preferred values of the adding parts are consistent with the specific preferred scheme of the components in the water-based glossy finish paint and the preferred values of the adding parts, and are not repeated here.
The cosolvent, the wetting agent, the mildew preventive, the thickening agent and the defoaming agent are added into the water-based hydroxyl acrylic resin and mixed to obtain the component A. Wherein, the raw materials added into the water-based hydroxyl acrylic resin can also comprise color paste.
The invention is not limited in particular to the specific mode and parameters of the mixing in principle, and can be selected and adjusted by the skilled person according to the production condition, the use condition and the performance requirement, and the mixing is preferably stirring mixing in order to better ensure the performance, the use effect and the preparation process of the water-based glossy finish paint. The mixing speed is preferably 800-1000r/min, more preferably 820-980 r/min, more preferably 850-950 r/min, and more preferably 880-920 r/min. The mixing time is preferably 30-60 min, more preferably 35-55 min, and still more preferably 40-50 min.
In order to better ensure the performance, the using effect and the preparation process of the water-based glossy finish paint, complete and refine the process flow, the method preferably further comprises a filtering step after mixing, and particularly preferably adopts a filter screen for filtering. The fineness of the component A of the present invention is preferably 10 μm or less, more preferably 8 μm or less, and still more preferably 5 μm or less.
In order to better ensure the performance, the using effect and the preparation process of the water-based glossy finish paint, and complete and refine the process flow, the preparation steps of the component A are preferably as follows:
a) premixing the filtered water-based hydroxyl acrylic resin and a defoaming agent to obtain a mixture;
b) ) slowly adding the cosolvent, the wetting agent, the mildew preventive and the thickening agent into the mixture obtained in the step (a) and mixing to obtain the component A.
The specific parameters of the filtered waterborne hydroxyl acrylic resin are not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to the production condition, the use condition and the performance requirement, in order to better ensure the performance, the use effect and the preparation process of the waterborne glossy finish paint, the fineness of the filtered waterborne hydroxyl acrylic resin is preferably less than or equal to 10 μm, more preferably less than or equal to 8 μm, and more preferably less than or equal to 5 μm. .
The specific mode and parameters of the premixing are not particularly limited in principle, and can be selected and adjusted by a person skilled in the art according to the production condition, the use condition and the performance requirement. The rotation speed of the premixing is preferably 1500-1800r/min, more preferably 1550-1750 r/min, and more preferably 1600-1700 r/min. The time for premixing is preferably 30-60 min, more preferably 35-55 min, and still more preferably 40-50 min.
The specific parameters of the slow addition are not particularly limited in principle, and can be selected and adjusted by those skilled in the art according to the production condition, the use condition and the performance requirement, and in order to better ensure the performance, the use effect and the preparation process of the water-based glossy finish paint, the slow addition speed is preferably 5-10 wt%/min, more preferably 6-9 wt%/min, and more preferably 7-8 wt%/min of the required added substances.
More preferably, in order to further ensure the performance, the use effect and the preparation process of the water-based glossy finish paint, complete and refine the process flow, the conditions for performing the step b) are preferably as follows:
and (b) directly adding a wetting agent into the mixture or taking a mixture sample, dripping the wetting agent into the mixture, spraying the mixture, observing whether the appearance of the coating film is shrunk, and performing the step b) after confirming that no shrinkage is formed, namely mixing the mixture obtained in the step (a), the cosolvent, the wetting agent, the mildew preventive and the thickening agent to obtain the component A.
The component B is obtained by carrying out second mixing on the hydrophilic modified diisocyanate curing agent, the propylene glycol monomethyl ether acetate and the water removing agent.
The specific mode and parameters of the second mixing are not particularly limited in principle, and can be selected and adjusted by those skilled in the art according to the production condition, the use condition and the performance requirement. The rotation speed of the second mixing is preferably 1000-1500 r/min, more preferably 1100-1400 r/min, and more preferably 1200-1300 r/min. The second mixing time is preferably 30-60 min, more preferably 35-55 min, and still more preferably 40-50 min.
In order to better ensure the performance, the using effect and the preparation process of the water-based glossy finish paint, complete and refine the process flow, the second mixing is preferably carried out under the drying condition. The component B needs to be stored under anhydrous and closed conditions.
When the water-based gloss finish paint provided by the invention is used, the water-based gloss finish paint can be obtained after the component A and the component B obtained in the above steps are combined.
The invention is not limited in particular in terms of the specific manner and parameters of the combination, and the manner and parameters of the combination of the water-based glossy top coat before use, which are well known to those skilled in the art, can be selected and adjusted by those skilled in the art according to the use situation, performance requirements and coating requirements.
In order to better ensure the performance, the using effect and the preparation process of the water-based gloss finish paint, and complete and refine the process flow, the preparation process of the water-based gloss finish paint can specifically comprise the following steps:
the preparation method of the component A comprises the following steps:
11) filtering the high hydroxyl acrylic resin and the low hydroxyl acrylic resin with the formula amount into a clean container by using a 300-mesh filter screen, adding a defoaming agent, adjusting a dispersing machine to 1500-1800r/min, and dispersing for more than 25 min;
12) sampling and dripping two drops of wetting agent for spraying to observe whether the appearance of the coating film is shrunk or not, and adjusting the rotating speed of the dispersion machine to 800-1000r/min after confirming that no shrinkage is formed;
13) slowly adding cosolvent, wetting agent, mildew preventive, white color paste and thickener, stirring for 30min, and filtering with 400 mesh filter screen to obtain component A.
The preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding hydrophilic modified isophorone diisocyanate (IPDI), hydrophilic modified Hexamethylene Diisocyanate (HDI), propylene glycol monomethyl ether acetate and a water removing agent at one time, mixing and stirring uniformly, and then subpackaging in a closed iron tank.
When in use, the A, B components are uniformly mixed according to a proportion to obtain the waterborne wood coating with high brightness, high resistance and no miliaria and dark bubbles.
The invention also provides the application of the water-based gloss finish paint in any technical scheme or the water-based gloss finish paint prepared by the preparation method in any technical scheme in the furniture coating process.
The specific choice of the furniture is not particularly limited in principle by the present invention, and may be a broad furniture concept well known to those skilled in the art, which can be selected and adjusted according to the use situation, environmental requirements and performance requirements, and the present invention is to better ensure the performance and use effect of the water-based gloss finish, and the furniture is preferably a bathroom cabinet. The present invention is not particularly limited to the specific manner of coating, and may be applied in the manner of coating of a water-based glossy finish paint known to those skilled in the art, and the present invention is preferably spray coating.
The steps of the invention provide a water-based light finish paint with high brightness, high resistance and no hidden bubbles and miliaria, and a preparation method and application thereof. The high-gloss waterborne wood finish provided by the invention has high brightness, good resistance of a paint film and no miliaria or dark bubbles in a drying process. According to the invention, the water-based HDI and the IPDI are shared and mixed according to a specific proportion, so that the characteristics of high hardness and good tolerance of the IPDI curing agent after drying are fully exerted, the water-based HDI curing agent and the IPDI curing agent are combined to be used as the curing agent of the high-gloss water-based wood finish paint, the problems that the existing water-based HDI curing agent is low in hardness and prone to generating miliaria and dark bubbles when being thick-coated are effectively solved, and the problems that the existing water-based HDI curing agent cannot be solved are solved, so that the problems of hardness, dark bubbles, miliaria and tolerance of the two-component light paint are greatly improved. The invention further uses the special selection and proportion of various auxiliary agents, especially the matching use of the high-hydroxyl resin and the low-hydroxyl resin in a specific proportion, so that the generation of miliaria is slowed down better, the hardness can be ensured, and the high-hydroxyl resin is comprehensively balanced to have better hardness and fullness, but the miliaria is easier to generate and the drying speed is slower; the low-hydroxyl resin has the characteristics of better drying property and avoidance of miliaria. The water-based bright finish paint is finally obtained, the brightness of the paint is higher, the paint can be compared favorably with oil paint, and compared with the oil paint, the paint is more environment-friendly, yellowing-resistant, and has stronger performances of hardness, water resistance, chemical resistance and the like; furthermore, the ordinary water-based bright wood paint is very easy to generate miliaria after the temperature exceeds 30 ℃, but the water-based bright finishing paint has high temperature tolerance, can be cured at normal temperature (0-40 ℃) without generating miliaria, has high fullness of a paint film, almost has no hidden bubbles in the paint film, and is very suitable for coating production of bathroom cabinets. In addition, the preparation method of the water-based high-brightness water-based wood coating provided by the invention is simple in process, strong in operability, capable of realizing continuous production and suitable for popularization and application of industrial scale production.
Experimental results show that the high-gloss water-based wood finish provided by the invention not only has the brightness of over 95 percent, but also has good resistance of a paint film and does not generate miliaria and dark bubbles in the drying process.
For further illustration of the present invention, the following will describe in detail a water-based top-coat paint and its preparation method and application in conjunction with the following examples, but it should be understood that these examples are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and specific procedures are given, only for further illustration of the features and advantages of the present invention, but not for limitation of the claims of the present invention, and the scope of the present invention is not limited to the following examples.
The materials described in the examples are commercially available and are given by the manufacturer and the reference numerals described in the specification.
Example 1
The water-based wood lacquer with high brightness, high resistance and no miliaria and dark bubbles is prepared according to the following mixture ratio:
the component A comprises: a2601: 50%, PA-4801: 35%, texanol: 5%, BYK 028: 0.3%, tego wet 4200: 0.3%, OS6050: 1%, BEK-200L: 0.2%, deionized water: 8 percent;
the component B comprises: 4098-71: 40%, 2655: 45%, PMA: 14%, Additive Ti: 1 percent.
A. The weight ratio of the component B is 100: 30.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) filtering the aqueous resins A2601 and PA-4801 into a clean container by a 300-mesh filter screen, adding BYK028, adjusting a dispersion machine to 1500-;
2) sampling and dripping two drops of tego wet 4200 to observe whether the appearance of the coating film is shrunk or not, and adjusting the rotating speed of the dispersion machine to 800-;
3) slowly adding texanol, tego wet 4200, BEK-200L and OS6050, stirring for 30min, and filtering with a 400-mesh filter screen to obtain the component A.
The preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 4098-71, 2655, PMA and Additive Ti once, mixing and stirring uniformly, and subpackaging into a closed iron tank.
The water-based bright top-coat which does not generate miliaria and dark bubbles is prepared.
The detection results of the aqueous high-brightness high-resistance miliaria-free and dark-bubble-free woodenware paint prepared in the embodiment 1 of the invention are detected according to the GBT 23999-one 2009 waterborne woodenware paint for interior decoration, and the performance parameters are shown in Table 1:
TABLE 1
Example 2
The water-based wood lacquer with high brightness, high resistance and no miliaria and dark bubbles is prepared according to the following mixture ratio:
the component A comprises: a2601: 40%, PA-4801: 30%, texanol: 5%, BYK 028: 0.3%, tego wet 4200: 0.3%, OS6050: 1%, BEK-200L: 0.2%, white paste: 20%, deionized water: 3.2 percent of
The component B comprises: 4098-71: 40%, 2655: 45%, PMA: 14%, Additive Ti: 1 percent of
A. The weight ratio of the component B is 100: 20.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) filtering the water-based resins A2601 and PA-4801 into a clean container by using a 300-mesh filter screen, adding BYK028, adjusting a dispersing machine to 1500-1800r/min, and dispersing for 25 min;
2) sampling and dripping two drops of tego wet 4200 to observe whether the appearance of the coating is shrunk or not, and adjusting the rotating speed of the dispersion machine to 800-1000r/min after confirming that no shrinkage is formed;
3) slowly adding texanol, tego wet 4200, BEK-200L, white slurry and OS6050, stirring for 30min, and filtering with a 400-mesh filter screen to obtain the component A.
The preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 4098-71, 2655, PMA and Additive Ti once, mixing and stirring uniformly, and subpackaging into a closed iron tank.
The water-based bright white finish paint which does not generate miliaria and dark bubbles is prepared.
Example 3:
the water-based top-coat finish prepared in examples 1 to 2 and a commercially available water-based top-coat finish (guangzhou kangzheng polymer) were coated in the following manner, and table 2 shows a conventional coating process.
TABLE 2
| Item | Procedure (ii) | Require that |
| 1 | Deburring | Sealing primer and 100% deionized water are sprayed uniformly |
| 2 | 240# abrasive paper grinding | Polishing and flattening |
| 3 | Seal primer | Uniformly spray wet |
| 4 | 400# sandpaper grinding | Polishing and flattening |
| 5 | White primer | Uniformly spray wet |
| 6 | 400# sandpaper grinding | Polishing and flattening |
| 7 | White primer | Uniformly spray wet |
| 8 | 400# sandpaper grinding | Polishing and flattening |
| 9 | Water-based glossy finish paint | Uniformly spray wet |
And (3) carrying out related performance test on the finish after the finish is coated, and referring to the water-based wood coating for indoor decoration and fitment in GBT 239990-plus 2009. The test data includes: 1) after the water-based glossy finish paint is sprayed, the water-based glossy finish paint is respectively placed at the environmental conditions of 15 ℃, 20 ℃, 30 ℃ and 38 ℃ for drying, the dark bubble and miliaria conditions of the paint film are observed after the water-based glossy finish paint is dried, and the test results are shown in table 3.
TABLE 3
2) After the water-based gloss finish paint is sprayed and dried for 7 days at room temperature, the interlayer adhesion of the paint film, 50% alcohol resistance for 1 hour and 6 hours, and 10% acetic acid resistance for 1 hour and 6 hours are measured; 50g/L NaHCO resistant31h and 6 h; boiling water scalding resistance is realized for 24 h; the test results are shown in Table 4.
TABLE 4
| Test items | Example 1 | Example 2 | Commercial gloss finish |
| Gloss (60 degree angle) | 97° | 95° | 92° |
| Adhesion force | 0 | 0 | 1 |
| Resisting 50% alcohol for 1h | No abnormality | No abnormality | No abnormality |
| Resisting 50% alcohol for 6h | No abnormality | No abnormality | The paint film is whitish and foamed |
| Resisting 10% acetic acid for 1h | No abnormality | No abnormality | No abnormality |
| Resisting 10% acetic acid for 6h | No abnormality | No abnormality | Film whitening |
| 50g/L NaHCO resistant3 1h | No abnormality | No abnormality | No abnormality |
| 50g/L NaHCO resistant3 6h | No abnormality | No abnormality | Slight whitening of the paint film |
| Boiling water scalding resistant 24h | No abnormality | No abnormality | Film whitening |
From the comparison results of example 3, it can be seen that: the water-based glossy finish paint prepared by the invention has the advantages of high gloss, strong adhesive force, good water resistance and chemical resistance, difficult occurrence of dark bubbles and miliaria and low VOC content, and is very suitable for coating production of bathroom cabinets.
Example 4
The main agent prepared according to the example 1 is used as the component A, different curing agent ratios are used as the component B, the paint film effect is compared, the drying temperature is 35 degrees, the relative humidity is 70 percent, the proportion of the component A to the component B is 100: 30. the test results are shown in Table 5.
B1 formula: 4098-71: 40%, 2655: 45%, PMA: 14%, Additive Ti: 1 percent of
B2 formula: 4098-71: 50%, 2655: 35%, PMA: 14%, Additive Ti: 1 percent of
B3 formula: 2655: 85%, PMA: 14%, Additive: 1 percent of
B4 formula: 4098-71: 90%, PMA: 9%, Additive: 1 percent of
Table 5:
the results in Table 5 show that 4098-71 curing agents and 2566 curing agents, which are mixed and matched in a certain proportion, can obtain a coating with perfect surface effect and performance, while the above curing agents, which are used alone, cannot obtain satisfactory coating effect and cannot meet the construction requirements.
The foregoing has outlined in detail the present invention providing a high brightness, high durability, non-blistering, non-miliaria waterborne gloss finish, a method of making the same, and an application thereof, wherein certain embodiments have been set forth herein in order to provide a more thorough understanding of the present invention and the principles and implementations thereof, wherein the above detailed description of the embodiments is provided to facilitate an understanding of the present invention's process and its core concepts, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any combination thereof. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The scope of the invention is defined by the claims and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (10)
1. The water-based glossy finish paint for furniture coating is characterized by comprising a component A and a component B;
the component A is as follows:
the aqueous hydroxyl acrylic resin comprises high hydroxyl acrylic resin and low hydroxyl acrylic resin;
the hydroxyl content of the high-hydroxyl acrylic resin is 3-4%;
the hydroxyl content of the low-hydroxyl acrylic resin is 1-2%;
the component B is as follows:
the hydrophilic modified diisocyanate curing agent comprises hydrophilic modified isophorone diisocyanate and hydrophilic modified hexamethylene diisocyanate;
the water-based varnish is water-based woodware varnish.
2. The water-based glossy finish paint according to claim 1, wherein the mass ratio of the component A to the component B is 100: (20-30).
3. The water-based glossy finish paint according to claim 1, wherein the amount of the high hydroxyl acrylic resin is 30-60 parts by weight;
the dosage of the low-hydroxyl acrylic resin is 20-50 parts by weight;
the solid content of the high-hydroxyl acrylic resin is 40-47%;
the solid content of the low-hydroxyl acrylic resin is 40-45%.
4. The water-based glossy finish paint according to claim 1, wherein the amount of the hydrophilic modified isophorone diisocyanate is 30-50 parts by weight;
the amount of the hydrophilic modified hexamethylene diisocyanate is 30-60 parts by weight.
5. The waterborne glossy topcoat of claim 1 wherein the co-solvent comprises one or more of texanol, dipropylene glycol butyl ether, dipropylene glycol methyl ether, and propylene glycol;
the wetting agent comprises tego 4200 and/or tego wet 270;
the antifoaming agent comprises BYK028 and/or tego 902W;
the thickener comprises TT615 and/or OS 6050;
the mildew preventive comprises one or more of BEK-200L, Polyphase AF3, Polyphase PW40 and Polyphase 689;
the color paste comprises aqueous titanium white paste;
the water removing agent comprises one or more OF Additive Ti, Additive OF and OMG Additive TI.
6. A method for preparing the water-based glossy finish paint according to any one of claims 1 to 5, characterized by comprising the following steps:
1) adding a cosolvent, a wetting agent, a mildew preventive, a thickening agent and a defoaming agent into the water-based hydroxyl acrylic resin, and mixing to obtain a component A;
carrying out second mixing on the hydrophilic modified diisocyanate curing agent, propylene glycol methyl ether acetate and a water removing agent to obtain a component B;
when the water-based glossy finish paint is used, the component A and the component B obtained in the step are combined to obtain the water-based glossy finish paint.
7. The method according to claim 6, wherein the fineness of the component A is 10 μm or less;
the mixing time is 30-60 min;
the mixing speed is 800-1000 r/min;
the second mixing time is 30-60 min;
the rotating speed of the second mixing is 1000-1500 r/min;
the raw materials added into the water-based hydroxyl acrylic resin also comprise color paste.
8. The preparation method according to claim 6, wherein the preparation steps of the component A are specifically:
a) premixing the filtered water-based hydroxyl acrylic resin and a defoaming agent to obtain a mixture;
b) slowly adding a cosolvent, a wetting agent, a mildew preventive and a thickening agent into the mixture obtained in the step, and mixing to obtain a component A;
the second mixing is carried out under a dry condition;
the component B needs to be stored under anhydrous and closed conditions.
9. The production method according to claim 8, wherein the fineness of the filtered aqueous hydroxyacrylic resin is 10 μm or less;
the premixing time is 30-60 min;
the rotation speed of the premixing is 1500-1800 r/min;
the conditions under which step b) is carried out are:
and (c) taking a mixture sample, dripping a wetting agent, spraying, observing whether the appearance of the coating film is shrinkage cavity or not, and performing the step b) after confirming that no shrinkage cavity exists.
10. The use of the water-based glossy top coat according to any one of claims 1 to 5 or the water-based glossy top coat prepared by the preparation method according to any one of claims 6 to 8 in a furniture coating process;
the furniture comprises a sanitary cabinet.
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| CN111171696A (en) * | 2020-03-02 | 2020-05-19 | 上海立邦长润发涂料有限公司 | Water-based double-component matte white finish and preparation method thereof |
| CN111349384B (en) * | 2020-04-15 | 2021-10-12 | 南京长江涂料有限公司 | Weather-resistant water-based sand textured paint and preparation method thereof |
| CN111440521A (en) * | 2020-05-12 | 2020-07-24 | 东莞真诚化工有限公司 | Recoating environment-friendly water-based plastic polyurethane paint and preparation method thereof |
| CN111777933A (en) * | 2020-06-10 | 2020-10-16 | 惠州市奥亚皇冠涂料有限公司 | Aqueous two-component white elastic wood finish and preparation method thereof |
| CN111690314A (en) * | 2020-06-19 | 2020-09-22 | 广东立邦长润发科技材料有限公司 | Water-based double-component matte clear finish paint and preparation method thereof |
| CN113969092A (en) * | 2021-12-01 | 2022-01-25 | 龚亮 | Environment-friendly coating composition for improving furniture brightness |
| CN114621663B (en) * | 2022-04-19 | 2022-12-09 | 上海立邦长润发涂料有限公司 | Water-based two-component glossy finish paint and preparation method thereof |
| CN115960498B (en) * | 2022-09-21 | 2024-03-15 | 上海君子兰新材料股份有限公司 | Aqueous two-component solid color finishing paint for woodware and preparation method thereof |
| CN116285633B (en) * | 2023-05-25 | 2023-08-08 | 广东德冠薄膜新材料股份有限公司 | Environment-friendly hardening paint, environment-friendly hardening polyolefin film and preparation method thereof |
| CN116875166A (en) * | 2023-08-15 | 2023-10-13 | 深圳市雷巴环保材料有限公司 | Water-based plastic paint and preparation method thereof |
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