CN115851095A - Water-based double-component top-coat paint and preparation method thereof - Google Patents
Water-based double-component top-coat paint and preparation method thereof Download PDFInfo
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Abstract
The application relates to the technical field of coatings, in particular to a water-based two-component top-coat paint and a preparation method thereof. The water-based two-component top-coat paint comprises a first component and a second component, wherein the first component comprises: 35-45 parts of aqueous hydroxyl acrylic emulsion, 30-40 parts of aqueous hydroxyl dispersion, 4-8 parts of film-forming additive, 0.2-1 part of wetting agent, 0.1-0.5 part of flatting agent, 3.3-9.5 parts of additive and 5-15 parts of deionized water; the second component comprises: 75-80 parts of water-dispersible HDI type isocyanate and 20-25 parts of propylene glycol monomethyl ether acetate; the mass ratio of the first component to the second component is 100:10 to 12. The obtained water-based double-component clear finish has the characteristics of high temperature resistance, good scratch resistance and excellent chemical resistance.
Description
Technical Field
The application belongs to the technical field of coatings, and particularly relates to a water-based two-component top-coat paint and a preparation method thereof.
Background
Along with the increasing enhancement of environmental awareness of people, the application range of solvent-based coatings is gradually limited, and the water-based wood coatings have the advantages of low Volatile Organic Compound (VOC) emission, low toxicity, non-combustibility, non-explosion, no fire hazard and the like, are more and more concerned and valued by people, and are also more and more popularized and applied in the market of industrial wood coatings. However, the rapid development of the waterborne wood coating in the market is restricted by the problems of poor wear resistance, low hardness, poor adhesion resistance, poor scratch resistance and the like of the waterborne wood coating, and the waterborne wood coating is particularly applied to office furniture with high requirements on wear resistance, hardness and steel cup mark resistance.
Therefore, the development of a water-borne wood coating with good steel cup watermark resistance effect is urgently needed to solve the problem of steel cup marks left on the surfaces of office furniture in the prior art for drinking tea frequently.
Disclosure of Invention
The application aims to provide a water-based two-component top-coat paint and a preparation method thereof, and aims to solve the problem of steel cup marks left on the surfaces of office furniture for frequent tea drinking in the prior art.
In order to achieve the purpose of the application, the technical scheme adopted by the application is as follows:
in a first aspect, the present application provides a water-based two-component top-coat paint, which comprises a first component and a second component, wherein the first component comprises the following components in parts by weight:
the second component comprises the following components in parts by weight:
75-80 parts of water dispersible HDI type isocyanate,
20-25 parts of propylene glycol methyl ether acetate;
the mass ratio of the first component to the second component is 100:10 to 12.
In a second aspect, the present application provides a method for preparing a water-based two-component top-coat paint, comprising the following steps:
providing each component material according to the water-based double-component clear finish;
carrying out first mixing and dispersing treatment on the aqueous hydroxyl acrylic emulsion, the aqueous hydroxyl dispersion and the auxiliary agent to obtain a first mixture;
carrying out second mixing and dispersing treatment on the first mixture, the film forming additive, the wetting agent and the flatting agent to obtain a first component raw material;
performing third mixing and dispersing treatment on the water-dispersible HDI type isocyanate and the propylene glycol monomethyl ether acetate to obtain a second component raw material;
and uniformly mixing the first component raw material and the second component raw material in proportion, standing to obtain the water-based two-component clear finish, and spraying.
The water-based two-component top-coat paint provided by the first aspect of the application comprises a first component and a second component, wherein the first component takes a water-based hydroxyl acrylic emulsion and a water-based hydroxyl dispersoid as main materials, and the water-based hydroxyl acrylic emulsion has small particle size, good compatibility and chemical resistance and is used in cooperation with the water-based hydroxyl dispersoid, so that the first component can be promoted to be uniformly mixed and not to easily cause agglomeration, and meanwhile, the water-based two-component top-coat paint is matched with a specific film forming auxiliary agent, a rheological agent and a wetting agent for use together, thereby further improving the physicochemical performance of the water-based two-component top-coat paint film, ensuring that the formed finished paint has good scratch resistance, excellent chemical resistance and low odor, and has good steel cup mark resistance effect when being sprayed on the surface of furniture, and solving the problem of steel cup marks left on the surface of office furniture when tea is frequently drunk.
According to the preparation method of the water-based two-component top-coat paint provided by the second aspect of the application, the raw materials are mixed in batches to obtain the high-performance water-based two-component top-coat paint, the preparation method is simple and rapid, large instruments and equipment are not needed, the raw materials are convenient to obtain, and the wide application is facilitated.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
In this application, the term "and/or" describes an association relationship of associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a is present alone, A and B are present simultaneously, and B is present alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In this application, "at least one" means one or more, "a plurality" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one (a), b, or c", or "at least one (a), b, and c", may each represent: a, b, c, a-b (i.e. a and b), a-c, b-c, or a-b-c, wherein a, b, and c can be single or multiple respectively.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not imply an execution sequence, some or all of the steps may be executed in parallel or executed sequentially, and the execution sequence of each process should be determined by its function and inherent logic, and should not limit the implementation process of the embodiments of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The weight of the related components mentioned in the description of the embodiments of the present application may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, the content of the related components is scaled up or down within the scope disclosed in the description of the embodiments of the present application as long as it is scaled up or down according to the description of the embodiments of the present application. Specifically, the mass in the description of the embodiments of the present application may be in units of mass known in the chemical industry, such as μ g, mg, g, and kg.
The terms "first" and "second" are used for descriptive purposes only and are used for distinguishing purposes such as substances from one another, and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. For example, a first XX may also be referred to as a second XX, and similarly, a second XX may also be referred to as a first XX, without departing from the scope of embodiments of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The first aspect of the embodiments of the present application provides a water-based two-component top-coat paint, which comprises a first component and a second component, wherein the first component comprises the following components in parts by weight:
the second component comprises the following components in parts by weight:
75-80 parts of water dispersible HDI type isocyanate,
20-25 parts of propylene glycol methyl ether acetate;
the mass ratio of the first component to the second component is 100:10 to 12.
The water-based two-component top-coat paint provided by the first aspect of the embodiment of the application comprises a first component and a second component, wherein the first component takes water-based hydroxyl acrylic emulsion and water-based hydroxyl dispersoid as main materials, and the water-based hydroxyl acrylic emulsion has small particle size, good compatibility and chemical resistance and is used in cooperation with the water-based hydroxyl dispersoid, so that the first component can be promoted to be uniformly mixed and not to easily cause agglomeration, and meanwhile, the water-based two-component top-coat paint is matched with a specific film forming auxiliary agent, a rheological agent and a wetting agent for use, thereby further improving the physical and chemical properties of the water-based two-component top-coat paint film, ensuring that the formed finished paint has good scratch resistance, excellent chemical resistance and low odor, and has good steel cup mark resistance effect when being sprayed on the surface of furniture, and solving the problem of steel cup mark left on the surface of office furniture when being frequently drunk by tea.
Further, the water-based two-component top-coat paint comprises a first component and a second component, wherein the first component comprises 35-45 parts of water-based hydroxyl acrylic emulsion. The water-based hydroxyl acrylic emulsion has the advantages of small particle size, good compatibility, excellent chemical resistance, high transparency, excellent board surface effect, high hardness, good resistance, outstanding adhesive force and extremely high alcohol rub resistance.
In some embodiments, the added parts of the aqueous hydroxy acrylic emulsion in the first component of the aqueous two-component top-coat paint include, but are not limited to, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, and 45 parts.
In some embodiments, specifically selected products of the aqueous hydroxyacrylic emulsions include, but are not limited to, wanhua 4701 or Corsai Polymer XK102 or Fuguoshan technologies 2008 hydroxyacrylic emulsions
Further, the aqueous two-component top-coat paint comprises a first component and a second component, wherein the first component comprises 30-40 parts of aqueous hydroxyl dispersion. The aqueous hydroxyl dispersion has excellent performance, so that the aqueous hydroxyl dispersion can be uniformly mixed with other components in the mixing process, and agglomeration is not easy to cause so as to influence the use of subsequent finish paint.
In some embodiments, the added parts of the aqueous hydroxyl dispersion in the first component of the aqueous two-component top-coat paint include, but are not limited to, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts.
In some embodiments, specifically selected products of the aqueous hydroxyl dispersion include, but are not limited to, wanhua 4166 or Corsikon 2755
Further, the water-based two-component clear finish paint comprises a first component and a second component, wherein the first component comprises 4-8 parts of a film-forming assistant. The film forming assistant is added, so that the formed clear finish can quickly form a film, a continuous paint film is formed, and the film breaking phenomenon is not easy to occur.
In some embodiments, the coalescent is a mixture of dipropylene glycol methyl ether and dipropylene glycol butyl ether or a mixture of dipropylene glycol methyl ether and diethylene glycol butyl ether. In some implementations, the mass ratio of dipropylene glycol methyl ether to dipropylene glycol butyl ether is 1:2.
in some embodiments, the film-forming aid is added in the first component of the aqueous two-component top-coat paint in parts including, but not limited to, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts.
Further, the water-based two-component clear finish paint comprises a first component and a second component, wherein the first component comprises 0.2-1 part of wetting agent. The wetting agent is added, so that the surface tension of the system can be reduced strongly, and excellent substrate wetting and leveling property and unstable foam can be obtained.
In some embodiments, the wetting agent is selected from silicone-based wetting agents. In some implementations, the wetting agent is selected from any one of TEGO4100, byK349, byK346, and W3618.
In some embodiments, the wetting agent is added in the first component of the aqueous two-component top-coat paint in parts including, but not limited to, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part.
Further, the water-based two-component top-coat paint comprises a first component and a second component, wherein the first component comprises 0.1-0.5 part of a flatting agent. The leveling agent is added to promote the coating to form a flat, smooth and uniform coating film in the drying film-forming process. Can effectively reduce the surface tension of the finishing liquid and improve the leveling property and uniformity of the finishing liquid. Can improve the permeability of the coating liquid, reduce the possibility of generating spots and stains during the brush coating, increase the coverage and ensure that the formed film is uniform and natural.
In some embodiments, the leveling agent is selected from any one of the modesty Levaslip 455 silicone leveling agent and the pioneered PW336 acrylic leveling agent.
In some embodiments, the leveling agent is added in the first component of the aqueous two-component top-coat paint in parts including, but not limited to, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part.
Further, the water-based two-component top-coat paint comprises a first component and a second component, wherein the first component comprises 3.3-9.5 parts of an auxiliary agent, and the auxiliary agent can be cooperated with other components, so that the integral property of the water-based two-component top-coat paint is improved.
In some embodiments, the adjuvant comprises the following components in parts by weight:
in some embodiments, the auxiliary agent in the first component of the aqueous two-component top-coat paint comprises 0.2-1 part of dispersant, and the dispersant is added to facilitate the dispersion and stabilization of the extinction wax powder.
In some embodiments, the dispersant is selected from a high molecular weight block copolymer solution. In some embodiments, the dispersant is selected from TGAO755W.
In some embodiments, the added parts of the dispersant include, but are not limited to, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part.
In some embodiments, the auxiliary agent in the first component of the aqueous two-component top-coat paint comprises 0.2-1 part of defoaming agent, and the defoaming agent is added to be uniformly mixed with the aqueous polyurethane, so that the generation of foam in the system is reduced, and the generation of bubbles in production and construction is reduced.
In some embodiments, the defoamer is selected from at least one of a defoaming polymer, a polysiloxane, a mineral oil type defoamer. In some embodiments, the antifoaming agent is selected from TEGO902W.
In some embodiments, the number of portions of defoamer added includes, but is not limited to, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part.
In some embodiments, the auxiliary agent in the first component of the aqueous two-component top-coat paint comprises 0.2-0.5 part of bactericide, and the bactericide is added to inhibit the growth of bacteria in the top-coat paint, so that the obtained material can keep an antibacterial surface.
In some embodiments, the bactericide is selected from chloromethylisothiazolinone, which provides a bactericide chloromethylisothiazolinone that is formaldehyde free and is added to the formulation to enhance the stability of the coating and to prevent the growth of bacteria.
In some embodiments, the added parts of the germicide include, but are not limited to, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts.
In some embodiments, the adjuvant in the first component of the aqueous two-component top-coat paint comprises 1.5-2.5 parts of matting wax powder, and the matting wax powder is added to act synergistically with other main components, so that the paint film is compact and excellent in high-temperature resistance and water resistance.
In some embodiments, the matte wax powder is selected from PTFE wax powders.
In some embodiments, the added parts of matting wax powder include, but are not limited to, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.0 parts, 2.1 parts, 2.2 parts, 2.3 parts, 2.4 parts, 2.5 parts.
In some embodiments, the auxiliary agent in the first component of the aqueous two-component top-coat paint comprises 1-2 parts of matting powder, and the matting powder is added to achieve a synergistic effect with other main components and can reduce the gloss of a paint film.
In some embodiments, the matte wax powder is selected from fumed silica.
In some embodiments, the added parts of the matting powder include, but are not limited to, 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.0 parts.
In some embodiments, the auxiliary agent in the first component of the aqueous two-component top-coat paint comprises 0.1-1 part of scratch resistant auxiliary agent, and the scratch resistant auxiliary agent is added to act synergistically with other main components to enhance the smoothness and water resistance of a paint film.
In some embodiments, the scratch resistant aid is selected from scratch resistant aids selected from silicone molecular materials. In some embodiments, the scratch resistant aid is selected from DOWSIL 210S Additive
In some embodiments, the added parts of the scratch resistant aid include, but are not limited to, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part.
In some embodiments, in the first component of the aqueous two-component top-coat paint, the auxiliary agent comprises 0.1-0.5 part of pH regulator, and the pH regulator is added to regulate the pH of the whole top-coat paint, so that the raw material properties of each component are more excellent.
In some embodiments, the pH adjusting agent is selected from 2-amino-2-methyl-1-propanol. In some embodiments, the pH adjusting agent is selected from AMP-95, a chemical company of ANGUS.
In some embodiments, the added parts of the pH adjusting agent include, but are not limited to, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts.
In some embodiments, the adjuvant comprises 0.1-1 part of thickener in the first component of the aqueous two-component top-coat paint, and the thickener is added for the purpose of controlling the viscosity of the paint during manufacturing and construction.
In some embodiments, the thickener is selected from polyurethane thickeners. In some embodiments, the thickener is selected from the group consisting of the chemical PUR40 of gelatin.
In some embodiments, the added parts of the thickener include, but are not limited to, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part.
Further, the water-based two-component top-coat paint comprises a first component and a second component, wherein the first component comprises 5-15 parts of deionized water. In some embodiments, the deionized water is selected from industrial grade 3 deionized water.
In some embodiments, the added parts of deionized water in the first component of the aqueous two-component top-coat paint include, but are not limited to, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, and 15 parts.
Further, the water-based two-component clear finish paint comprises a first component and a second component, wherein the second component comprises 75-80 parts of water-dispersible HDI type isocyanate and 20-25 parts of propylene glycol monomethyl ether acetate. The water dispersible HDI isocyanate is a screened and diluted curing agent and has good compatibility and operability.
In some embodiments, the added parts of the water-dispersible HDI-type isocyanate include, but are not limited to, 75 parts, 76 parts, 77 parts, 78 parts, 79 parts, 80 parts.
In some embodiments, the added parts of propylene glycol methyl ether acetate include, but are not limited to, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts.
Further, the mass ratio of the first component to the second component is 100:10 to 12. In some embodiments, the mass ratio of the first component to the second component is 100:10.
the second aspect of the embodiment of the application provides a preparation method of a water-based two-component top-coat paint, which comprises the following steps:
s01, providing each component material according to the water-based two-component clear finish;
s02, carrying out first mixing and dispersing treatment on the water-based hydroxyl acrylic emulsion, the water-based hydroxyl dispersion and the auxiliary agent to obtain a first mixture;
s03, carrying out second mixing and dispersing treatment on the first mixture, the film forming aid, the wetting agent and the flatting agent to obtain a first component raw material;
s04, performing third mixing and dispersing treatment on the water-dispersible HDI type isocyanate and propylene glycol monomethyl ether acetate to obtain a second component raw material;
s05, uniformly mixing the first component raw material and the second component raw material in proportion, standing to obtain the water-based double-component clear finish, and spraying.
According to the preparation method of the water-based two-component top-coat paint provided by the second aspect of the embodiment of the application, the raw materials are mixed in batches to obtain the high-performance water-based two-component top-coat paint, the preparation method is simple and rapid, large instruments and equipment are not needed, the raw materials are convenient to obtain, and the preparation method is beneficial to wide application.
In some embodiments, the aqueous two-component top coat provides the same types and amounts of the materials as described above, and for brevity, are not described further herein.
Specifically, the preparation method comprises the following steps:
adding the aqueous hydroxyl acrylic emulsion and the aqueous hydroxyl dispersion into a tank, starting a stirrer to stir at 700r/min, adding the defoaming agent, the dispersing agent, the bactericide, the pH regulator, the flatting powder, the flatting wax and the scratch-resistant auxiliary agent, adding a proper thickening agent to improve the system viscosity, regulating the speed of the dispersing machine to 1500r/min, dispersing for 25 minutes, and scraping to ensure that the fineness is less than 25 micrometers;
reducing the stirring speed of the stirrer to 700r/min, adding the rest raw materials while stirring, dispersing for 15 minutes, and adjusting the viscosity of the washing machine to a proper range;
according to the main agent: aqueous curing agent: water =100:10:15 Mixing evenly (mass ratio), standing for 5 minutes, and spraying on the office table top with the prepared clear primer.
The following description will be given with reference to specific examples.
Example 1
Water-based two-component top-coat paint and preparation method thereof
The water-based double-component clear finish paint comprises:
a first component:
a second component:
80 parts of water-dispersible HDI type isocyanate,
20 parts of propylene glycol methyl ether acetate.
The preparation method of the water-based two-component clear finish comprises the following steps:
adding the aqueous hydroxyl acrylic emulsion and the aqueous hydroxyl dispersion into a tank, starting a stirrer to stir at 700r/min, adding the defoaming agent, the dispersing agent, the bactericide, the pH regulator, the flatting powder, the flatting wax and the scratch-resistant auxiliary agent, adding a proper thickening agent to improve the system viscosity, regulating the speed of the dispersing machine to 1500r/min, dispersing for 25 minutes, and scraping to ensure that the fineness is less than 25 micrometers;
reducing the stirring speed of the stirrer to 700r/min, adding the rest raw materials while stirring, dispersing for 15 minutes, and adjusting the viscosity of the washing machine to a proper range;
according to the main agent: aqueous curing agent: water =100:10:15 Mixing evenly (mass ratio), standing for 5 minutes, and spraying on the office table top with the prepared clear primer.
Example 2
Water-based double-component top-coat paint and preparation method thereof
The water-based two-component top-coat paint comprises:
a first component:
a second component:
80 parts of HDI type isocyanate which can be dispersed in water,
20 parts of propylene glycol methyl ether acetate.
The preparation method of the water-based two-component clear finish comprises the following steps:
adding the aqueous hydroxyl acrylic emulsion and the aqueous hydroxyl dispersion into a tank, starting a stirrer to stir at 700r/min, adding the defoaming agent, the dispersing agent, the bactericide, the pH regulator, the flatting powder, the flatting wax and the scratch-resistant auxiliary agent, adding a proper thickening agent to improve the system viscosity, regulating the speed of the dispersing machine to 1500r/min, dispersing for 25 minutes, and scraping to ensure that the fineness is less than 25 micrometers;
reducing the temperature of the stirrer to 700r/min, adding the rest raw materials while stirring, dispersing for 15 minutes, and adjusting the viscosity of a washing machine to a proper range;
according to the main agent: aqueous curing agent: water =100:10:15 Mixing evenly (mass ratio), standing for 5 minutes, and spraying on the office table top with the prepared clear primer.
Comparative example 1
Commercial water-based double-component matte clear finishing coat
A second component:
70-80 parts of water dispersible HDI type isocyanate,
20-30 parts of propylene glycol methyl ether acetate.
And (3) performance testing:
the products obtained in the example 1, the example 2 and the comparative example 1 are sprayed on PU clear primer by using oily PU clear finish as reference, and the products are subjected to bottom coloring according to the construction process 1, 2 times of PU clear primer, 3 times of surface color correction, 4 times of water-based two-component matte clear finish, and are tested after being dried for 7 days at normal temperature, and the test method is as follows: A1L stainless steel cup filled with boiling water was placed on the paint film and naturally cooled and heated, and the change of the paint film was observed.
And (4) analyzing results:
the products obtained in the examples 1, 2 and 1 are sprayed on PU clear primer by using oily PU clear finish as reference, the base coloring is carried out according to the construction process 1, 2 times of PU clear primer, 3 times of surface color correction, and 4 times of aqueous two-component matte clear finish is dried for 7 days at normal temperature, and the test results are shown in the table 1, so that the aqueous two-component clear finishes obtained in the examples 1 and 2 are as intact as PU full-matte clear finish paint films, while the aqueous two-component finish paint film provided in the comparative example 1 is provided with steel cup circle imprints, and the paint film is bright and cannot be recovered.
TABLE 1
In conclusion, the water-based two-component top-coat paint provided by the application comprises a first component and a second component, wherein the first component takes a water-based hydroxyl acrylic emulsion and a water-based hydroxyl dispersion as main materials, the water-based hydroxyl acrylic emulsion has small particle size and good compatibility, and is resistant to chemicals and is used in cooperation with the water-based hydroxyl dispersion, so that the first component can be uniformly mixed and is not easy to agglomerate, and meanwhile, the water-based two-component top-coat paint is matched with a specific film forming additive, a rheological agent and a wetting agent for use, the physicochemical property of a coating film of the water-based two-component top-coat paint is further improved, the formed finished paint is good in scratch resistance, excellent in chemical resistance and low in smell, the top-coat paint has a good steel cup mark resistant effect when being sprayed on the surface of furniture, and the problem of steel cup marks left on the surface of office furniture frequently drunk tea is solved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The water-based two-component top-coat paint is characterized by comprising a first component and a second component, wherein the first component comprises the following components in parts by weight:
the second component comprises the following components in parts by weight:
75-80 parts of water dispersible HDI type isocyanate,
20-25 parts of propylene glycol methyl ether acetate;
the mass ratio of the first component to the second component is 100:10 to 12.
2. The aqueous two-component top-coat paint according to claim 1, wherein the auxiliary comprises the following components in parts by weight:
3. the aqueous two-component clear top coat paint of claim 1 wherein the coalescent is selected from the group consisting of a mixture of dipropylene glycol methyl ether and dipropylene glycol butyl ether or a mixture of dipropylene glycol methyl ether and diethylene glycol butyl ether; and/or the presence of a gas in the gas,
the wetting agent is selected from organosilicon wetting agents; and/or the presence of a gas in the atmosphere,
the leveling agent is selected from any one of a modesty Levaslip 455 silicone leveling agent and a pioneered PW336 acrylic leveling agent.
4. The aqueous two-component top-coat paint of claim 2 wherein the dispersant is selected from high molecular weight block copolymer solutions.
5. The aqueous two-component top-coat paint of claim 2, wherein the defoamer is selected from at least one of a foam-breaking polymer, a polysiloxane, a mineral oil defoamer; and/or the presence of a gas in the gas,
the delustering wax powder is selected from PTFE wax; and/or the presence of a gas in the gas,
the matting powder is selected from fumed silica.
6. The aqueous two-component top-coat paint of claim 2, wherein the bactericide is selected from chloromethyl isothiazolinone.
7. The aqueous two-component top-coat paint of claim 2, wherein the pH adjuster is selected from 2-amino-2-methyl-1-propanol.
8. The aqueous two-component top-coat paint of claim 2, wherein the scratch resistance aid is selected from silicone molecular materials.
9. The aqueous two-component top-coat paint of claim 2, wherein the thickener is selected from polyurethane thickeners.
10. A preparation method of a water-based two-component top-coat paint is characterized by comprising the following steps:
the aqueous two-component top-coat paint according to any one of claims 1 to 9 providing the component materials;
carrying out first mixing and dispersing treatment on the aqueous hydroxyl acrylic emulsion, the aqueous hydroxyl dispersion and the auxiliary agent to obtain a first mixture;
carrying out second mixing and dispersing treatment on the first mixture, the film forming additive, the wetting agent and the flatting agent to obtain a first component raw material;
performing third mixing and dispersing treatment on the water-dispersible HDI type isocyanate and the propylene glycol monomethyl ether acetate to obtain a second component raw material;
and uniformly mixing the first component raw material and the second component raw material in proportion, carrying out static treatment to obtain the water-based two-component clear finish, and spraying.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105086805A (en) * | 2015-09-22 | 2015-11-25 | 佛山市顺德区吕邦化工有限公司 | High-hardness water-borne double-component wood-ware varnish with high wear resistance and preparing method thereof |
| CN106221541A (en) * | 2016-08-25 | 2016-12-14 | 北京建筑材料科学研究总院有限公司 | A kind of aqueous dual-component woodwork coating and preparation method thereof |
| CN108034346A (en) * | 2017-12-21 | 2018-05-15 | 万华化学（宁波）有限公司 | A kind of coating system for the composition and its formation for being used to produce aqueous coating |
| CN111944402A (en) * | 2020-07-21 | 2020-11-17 | 广东立邦长润发科技材料有限公司 | High-water-resistance water-based two-component matte top-coat paint and preparation method thereof |
| CN113480926A (en) * | 2019-05-21 | 2021-10-08 | 河北晨阳工贸集团有限公司 | High-resistance double-component environment-friendly water-based matte clear finish paint |
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2022
- 2022-12-14 CN CN202211614904.4A patent/CN115851095A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105086805A (en) * | 2015-09-22 | 2015-11-25 | 佛山市顺德区吕邦化工有限公司 | High-hardness water-borne double-component wood-ware varnish with high wear resistance and preparing method thereof |
| CN106221541A (en) * | 2016-08-25 | 2016-12-14 | 北京建筑材料科学研究总院有限公司 | A kind of aqueous dual-component woodwork coating and preparation method thereof |
| CN108034346A (en) * | 2017-12-21 | 2018-05-15 | 万华化学（宁波）有限公司 | A kind of coating system for the composition and its formation for being used to produce aqueous coating |
| CN113480926A (en) * | 2019-05-21 | 2021-10-08 | 河北晨阳工贸集团有限公司 | High-resistance double-component environment-friendly water-based matte clear finish paint |
| CN111944402A (en) * | 2020-07-21 | 2020-11-17 | 广东立邦长润发科技材料有限公司 | High-water-resistance water-based two-component matte top-coat paint and preparation method thereof |
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