CN116239921B - Base color paint resin liquid coating for ultra-fast drying large-area spraying and preparation method thereof - Google Patents
Base color paint resin liquid coating for ultra-fast drying large-area spraying and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The invention belongs to the technical field of high polymer coating, and particularly relates to a primer resin liquid coating for ultra-fast drying large-area spraying and a preparation method thereof. The primer provided by the invention comprises raw materials such as thermoplastic acrylic resin, PMA, BAC, DBE, CYC, a dispersing agent, a silane coupling agent, polyethylene wax slurry, superfine calcined kaolin, fumed silica, cellulose acetate butyrate, an acrylic ester leveling agent, a polysiloxane leveling agent, color paste and the like. The primer resin liquid has excellent drying speed and adhesive force, can reach 0 level after the adhesive force is measured on the electrophoresis layer and the intermediate coating surface by scribing, and has quick drying and excellent color spreading performance; the surface is dried for 10-20min at room temperature, so that the requirement of shielding film shielding without back adhesion can be met, the fullness and glossiness of the varnish coating are obviously improved, the process time is greatly shortened, the energy consumption is reduced, and the production benefit is improved.
Description
Technical Field
The invention belongs to the technical field of high polymer coating, and particularly relates to a primer resin liquid coating for ultra-fast drying large-area spraying and a preparation method thereof.
Background
The primer is a coating which is directly coated on the surface of an object and is used as a solid foundation of a finish paint, is a first layer of a paint system, and is used for improving the adhesive force of the finish paint, increasing the fullness of the finish paint, providing alkali resistance, providing anti-corrosion function and the like, and simultaneously ensuring uniform absorption of the finish paint so that the paint system can play an optimal role. The primer is required to be firmly adhered on the object surface so as to increase the adhesive force of the upper layer coating and improve the decoration of the finish paint.
Chinese patent application CN 110891993A, "low temperature cure 1K primer and method of coating a substrate with 1K primer", provides a storage stable one-part aqueous primer composition comprising a melamine-formaldehyde crosslinker and a resin having groups that can react with the melamine-formaldehyde crosslinker under acid catalysis. The base coat composition is curable at a temperature of 110 ℃ when moisture cured with a solvent borne varnish composition comprising a polyisocyanate crosslinker.
Chinese patent application CN 112500780A discloses a water-based metallic primer for vehicles, belonging to the technical field of paint coatings. The aqueous metal base color paint for the vehicle is compounded by the aqueous acrylic acid dispersion, the aqueous acrylic polyurethane dispersion and the aqueous polyurethane dispersion according to a proportion, so that the obtained product is more environment-friendly than the traditional oily vehicle paint, and meanwhile, the defect that the aqueous vehicle paint is low in tolerance and easy to drop is overcome; the anti-MEK anti-scratch paint has the advantages of excellent water resistance, high temperature resistance, weather resistance, acid resistance, alkali resistance, gasoline resistance, engine oil resistance, high hardness and toughness, and excellent MEK anti-scratch performance.
However, the above-mentioned researches fail to solve the problem of blocking the back adhesion of the existing primer blocking film, so that it is highly demanded to develop a primer which is not back adhered after the spraying and surface drying in the construction process.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a primer resin liquid coating for ultra-fast drying large-area spraying and a preparation method thereof. The primer resin liquid has excellent drying speed and adhesive force, can reach 0 level after the adhesive force is measured on the electrophoresis layer and the intermediate coating surface by scribing, and has quick drying and excellent color spreading performance; the surface is dried for 10-20min at room temperature, so that the requirement of shielding film shielding without back adhesion can be met, the fullness and glossiness of the varnish coating are obviously improved, the process time is greatly shortened, the energy consumption is reduced, and the production benefit is improved.
The technical scheme of the invention is as follows:
the base color paint resin liquid coating for ultra-fast drying large-area spraying comprises the following raw materials in parts by weight: 35-40 parts of thermoplastic acrylic resin, 3-4.6 parts of PMA, 7-8 parts of BAC, 2-4 parts of DBE, 2-4 parts of CYC, 0.5-1 part of dispersing agent, 2-4 parts of silane coupling agent, 4-5 parts of polyethylene wax slurry, 10-12 parts of superfine calcined kaolin, 0.5-1.2 parts of fumed silica, 22.7-30 parts of cellulose acetate butyrate, 0.5-1 part of acrylate leveling agent, 0.2-0.3 part of polysiloxane leveling agent and 100-110 parts of color paste.
The PMA is propylene glycol methyl ether acetate;
the BAC is butyl acetate;
the DBE is a dibasic acid ester mixture;
the CYC is cyclohexanone.
Further, the base paint resin liquid coating comprises the following raw materials in parts by weight: 40 parts of thermoplastic acrylic resin, 4 parts of PMA, 7 parts of BAC, 2 parts of DBE, 4 parts of CYC, 0.6 part of dispersing agent, 4 parts of silane coupling agent, 4 parts of polyethylene wax slurry, 10 parts of superfine calcined kaolin, 1 part of fumed silica, 22.7 parts of cellulose acetate butyrate, 0.5 part of acrylate leveling agent, 0.2 part of polysiloxane leveling agent and 100 parts of color paste.
Further, the color paste comprises the following raw materials in parts by weight: 30-40 parts of hydroxy acrylic resin, 1-3 parts of dispersing agent, 0.5-1 part of fumed silica, 50-65 parts of rutile titanium dioxide, 3-6 parts of PMA and 1-3 parts of BAC.
Further, the color paste comprises the following raw materials in parts by weight: 33 parts of hydroxy acrylic resin, 2 parts of dispersing agent, 1 part of fumed silica, 60 parts of rutile titanium dioxide, 3 parts of PMA and 1 part of BAC.
Further, the preparation method of the color paste comprises the following steps:
adding BAC and PMA into a cylinder, stirring and mixing for 5-10min at 300-600 rpm, then adding dispersant, hydroxy acrylic resin, fumed silica and rutile titanium pigment, pre-dispersing at 900-1200 rpm, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15um, the temperature is below 50 ℃, and the flow is 10-15L/min to obtain color paste.
Further, the dispersing agent is: lu Borun 20000 and 20000.
Further, the preparation method of the base color paint resin liquid coating for ultra-fast drying large-area spraying comprises the following steps:
sequentially adding thermoplastic acrylic resin, PMA, BAC, DBE, CYC, a dispersing agent, polyethylene wax slurry, superfine calcined kaolin and fumed silica in a formula amount, pre-dispersing at 900-1200 rpm, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15um, and obtaining slurry at the temperature below 50 ℃ and the flow rate of 10-15L/min; the invention grinds the fineness of the raw materials to below 15 mu m, can improve the flatness and leveling of the surface of a paint film, and can effectively increase the combination property of pigment and resin to form a relatively uniform resin-pigment mixture.
Step (2), adding cellulose acetate butyrate (CAB resin for short), an acrylic ester leveling agent and a polysiloxane leveling agent into the step (1) according to the dosage amount, and stirring for 5-10min at 300-600 rpm;
step (3), adding the silane coupling agent with the formula amount into the step (2), stirring for 5-10min at 300-600 rpm;
and (4) adding color paste into the step (3), stirring for 5-10min at 300-600 rpm.
Thermoplastic acrylic resins are a class of thermoplastic resins made by polymerizing acrylic acid, methacrylic acid, and derivatives thereof (e.g., esters, nitriles, amides). Coatings containing thermoplastic acrylic resins have the fundamental advantage of acrylic coatings: the weather resistance (approaching the level of the cross-linked acrylic paint) is good, the gloss retention and the color retention are excellent, and the water resistance, the acid resistance and the alkali resistance are good; there are also some disadvantages: the solid content is low (the viscosity is high when the solid content is high, the wiredrawing phenomenon is easy to occur when spraying), the coating film is poor in fullness, easy to crack at low temperature, high in Wen Yifa viscosity, poor in solvent release, slower in solid drying, poor in solvent resistance and the like. Therefore, the primer using the thermoplastic acrylic resin as a raw material has poor adhesion, reduced impact resistance and difficult construction.
The primer resin liquid coating for ultra-fast drying large-area spraying provided by the invention can greatly improve the surface drying time (10-20 min) of 1K paint at room temperature by using thermoplastic acrylic resin, superfine calcined kaolin and a silane coupling agent and cooperating with CAB resin and color paste, so that the requirement of shielding film on non-back adhesion can be met, the construction property in large-area construction can be met, the paint film can not shrink and adhere poorly due to the fact that the paint film is dried too fast, and the construction time can be shortened due to the fact that the paint film is dried fast. The thermoplastic acrylic resin is quick to dry, the surface drying time of the primer resin liquid coating can be greatly improved, but the problems of too fast shrinkage of the primer resin liquid coating film, poor adhesive force, poor coating film fullness, easy brittle fracture at low temperature, high Wen Yifa viscosity, poor solvent release and the like are also brought. In the research and development process, the inventor finds that the thermoplastic acrylic resin, the CAB resin and the color paste (the raw materials in the color paste are ground to a certain fineness) can greatly improve the surface drying of the 1K color paint for 10-20min at room temperature, so that the paint film can not shrink and have poor adhesive force due to too fast drying, and the quick drying can be satisfied, and the construction time is shortened; the superfine calcined kaolin is added in the system, so that the release rate of the solvent can be accelerated, the cost is reduced, the flexibility of a paint film is improved, and the penetration of glue in the color-coated adhesive tape to the paint film during color coating is reduced; and the silane coupling agent is added, so that the hydrogen bonding acting force between the coatings can be greatly increased, and further, the adhesive force, the flexibility and other performances of the base color paint resin liquid coating are improved.
Compared with the prior art, the primer resin liquid coating for ultra-fast drying large-area spraying and the preparation method thereof have the following advantages:
(1) The primer resin liquid has excellent adhesive force and ultra-fast drying speed, the adhesive force of the obtained product on the surfaces of the electrophoresis layer and the middle coating is 0-1 grade, the primer resin liquid has high vividness (dry film 15-25 um), and the surface drying at room temperature is 10-20min, so that the requirement of shielding film shielding non-back adhesion can be met; has a lower VOC value (VOC emission value in the range of 500-600 g/L); the existing oil-based bus 1K color paint color-registering in the market is baked and cooled to cover the color registering process of the coating finish paint; the invention has the surface drying at room temperature for 10-20min, can reach the capability of shielding the non-back adhesion of the shielding film, and obviously improves the fullness and appearance of the varnish; meanwhile, the invention has lower voc emission value, is more environment-friendly and energy-saving, shortens the process time and improves the production benefit.
Detailed Description
The invention is further illustrated by the following description of specific embodiments, which are not intended to be limiting, and various modifications or improvements can be made by those skilled in the art in light of the basic idea of the invention, but are within the scope of the invention as long as they do not depart from the basic idea of the invention.
In the following examples and comparative examples, the reagents not specifically described were conventional reagents, and were purchased from conventional reagent manufacturers and sales companies, and the information of some raw material manufacturers and the like was as follows:
the raw material purchase information used in the present invention is shown in the following table:
table 1: raw material purchase information table
Table 2: base coat raw materials dosage table (parts by weight/part) of inventive examples 1-3 and comparative examples 1-5
Note that: in the table "/" indicates that no substance was added.
Table 3: raw material usage amount (parts by weight/part) of color paste in the base paints of examples 1-3 and comparative examples 1-5 of the present invention
Note that: in the table "/" indicates that no substance was added.
Example 1
1. The preparation method of the base color paint resin liquid coating for ultra-fast drying large-area spraying comprises the following steps:
sequentially adding thermoplastic acrylic resin, PMA, BAC, DBE, CYC, a dispersing agent, polyethylene wax slurry, superfine calcined kaolin and fumed silica in a formula amount, pre-dispersing at 900 revolutions per minute, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15 mu m, and obtaining slurry at the temperature of below 50 ℃ and the flow rate of 10L/min;
step (2), adding cellulose acetate butyrate, an acrylic ester leveling agent and a polysiloxane leveling agent in the formula amount into the step (1), and stirring for 5min at 300 revolutions per minute;
step (3), adding the silane coupling agent with the formula amount into the step (2), stirring for 5min at 300 rpm;
and (4) adding color paste into the step (3), stirring for 5min at 300 rpm.
2. The preparation method of the color paste comprises the following steps:
mixing BAC and PMA in a formula amount in a cylinder for 5min under stirring at 300 rpm, adding dispersant, hydroxy acrylic resin, fumed silica and rutile titanium pigment in a formula amount, pre-dispersing at 900 rpm, grinding to a raw material fineness of below 15um by using a horizontal sand mill, and obtaining color paste at a temperature of below 50 ℃ and a flow of 10L/min.
Example 2
1. The preparation method of the base color paint resin liquid coating for ultra-fast drying large-area spraying comprises the following steps:
sequentially adding thermoplastic acrylic resin, PMA, BAC, DBE, CYC, a dispersing agent, polyethylene wax slurry, superfine calcined kaolin and fumed silica in a formula amount, pre-dispersing at 1200 revolutions per minute, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15 mu m, and obtaining slurry at the temperature of below 50 ℃ and the flow rate of 15L/min;
step (2), adding cellulose acetate butyrate, an acrylic ester leveling agent and a polysiloxane leveling agent in the dosage amount into the step (1), and stirring for 10min at 600 revolutions per minute;
step (3), adding the silane coupling agent with the formula amount into the step (2), stirring for 10min at 600 revolutions per minute;
and (4) adding the color paste with the formula amount into the step (3), stirring for 10min at 600 revolutions per minute.
2. The preparation method of the color paste comprises the following steps:
adding BAC and PMA in the formula amount into a cylinder, stirring and mixing for 10min at 600 revolutions per minute, then adding the dispersant, the hydroxy acrylic resin, the fumed silica and the rutile titanium pigment in the formula amount, pre-dispersing at 1200 revolutions per minute, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15um, and obtaining the color paste at the temperature below 50 ℃ and the flow of 15L/min.
Example 3
1. The preparation method of the base color paint resin liquid coating for ultra-fast drying large-area spraying comprises the following steps:
sequentially adding thermoplastic acrylic resin, PMA, BAC, DBE, CYC, a dispersing agent, polyethylene wax slurry, superfine calcined kaolin and fumed silica in a formula amount, pre-dispersing at 1000 revolutions per minute, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15 mu m, and obtaining slurry at the temperature of below 50 ℃ and the flow rate of 15L/min;
step (2), adding cellulose acetate butyrate, an acrylic ester leveling agent and a polysiloxane leveling agent in the dosage amount into the step (1), and stirring for 5min at 600 revolutions per minute;
step (3), adding the silane coupling agent with the formula amount into the step (2), stirring for 5min at 600 revolutions per minute;
and (4) adding color paste into the step (3), stirring for 10min at 300 rpm.
2. The preparation method of the color paste comprises the following steps:
adding BAC and PMA in the formula amount into a cylinder, stirring and mixing for 5min at 600 revolutions per minute, then adding the dispersant, the hydroxy acrylic resin, the fumed silica and the rutile titanium pigment in the formula amount, pre-dispersing at 1000 revolutions per minute, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15um, and obtaining the color paste at the temperature below 50 ℃ and the flow of 15L/min.
Comparative examples 1 to 5
Comparative examples 1 to 5 are different from example 3 in that the base paint resin liquid coating portion raw materials or the amounts thereof are different, specifically referring to tables 2, 3.
Comparative example 6
Comparative example 6 differs from example 3 in that talc was used instead of ultrafine calcined kaolin.
Comparative example 7
Comparative example 7 differs from example 3 in that the acrylate leveling agent (model BYK-358N) was replaced with a polysiloxane leveling agent of BYK company model BYK-306.
Comparative example 8
Comparative example 8 differs from example 3 in that the starting material was not ground in the preparation step (1); the raw materials are not ground in the preparation process of the color paste.
Test example:
test object: the base color paint resin liquid coating obtained in the examples and the comparative examples.
The test method comprises the following steps:
(1) The detection method comprises the following steps: GB/T9286-2021; detecting items: adhesion of the centering coating;
(2) The detection method comprises the following steps: GB/T5209-1985; detecting items: water resistance (days) of the composite coating; adhesion, grade;
(3) The detection method comprises the following steps: drying at normal temperature for 10min, and testing the back adhesion condition of the color paint after color separation by using a color separation adhesive tape and a shielding film; detecting items: the back adhesion condition of the colored paint;
(4) The detection method comprises the following steps: GB/T9754-2007; detecting items: gloss (60 ° angle);
(5) The detection method comprises the following steps: ASTM D5767-95-2004; detecting items: DOI;
(6) The detection method comprises the following steps: GB/T1732-2020; detecting items: impact resistance (kg.cm) of the composite coating;
(7) The detection method comprises the following steps: GB/T1865-2009, GB/T1766-2008; checking items: weather resistance (artificial weathering test);
test results:
the test results are shown in tables 4, 5 and 6.
TABLE 4 Table 4
TABLE 5
TABLE 6
As can be seen from tables 4, 5 and 6, the primer resin liquid paint of the present invention has the following excellent properties:
(1) Adhesion to the electrophoretic coating, grade 0-1; adhesion of the middle coating, grade 0-1;
(2) Color separation test: the color separation test is carried out by using a 3M,471 color separation adhesive tape and a color separation shielding protective film, and the test result of the primer resin liquid coating obtained by the invention is that no adhesive tape print, no film print and no back adhesion are caused;
(3) After the water resistance test is carried out for 10 days at the temperature of 40 ℃ of the composite coating, the adhesive force is measured to be 0-1 grade;
(4) The appearance effect after finishing paint is coated, the gloss is 60 degrees and the angle is 99.5-99.8, and the DOI value is 90.6-92.5;
(5) Impact resistance (film thickness of composite coating 130-150 μm, impact strength not less than 50 kg ∙ cm).
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (6)
1. The base color paint resin liquid coating for ultra-fast drying large-area spraying is characterized by comprising the following raw materials in parts by weight: 35-40 parts of thermoplastic acrylic resin, 3-4.6 parts of PMA, 7-8 parts of BAC, 2-4 parts of DBE, 2-4 parts of CYC, 0.5-1 part of dispersing agent, 2-4 parts of silane coupling agent, 4-5 parts of polyethylene wax slurry, 10-12 parts of superfine calcined kaolin, 0.5-1.2 parts of fumed silica, 22.7-30 parts of cellulose acetate butyrate, 0.5-1 part of acrylate leveling agent, 0.2-0.3 part of polysiloxane leveling agent and 100-110 parts of color paste;
the color paste comprises the following raw materials in parts by weight: 30-40 parts of hydroxy acrylic resin, 1-3 parts of dispersing agent, 0.5-1 part of fumed silica, 50-65 parts of rutile titanium dioxide, 3-6 parts of PMA and 1-3 parts of BAC;
the preparation method of the base color paint resin liquid coating for ultra-fast drying large-area spraying comprises the following steps:
sequentially adding thermoplastic acrylic resin, PMA, BAC, DBE, CYC, a dispersing agent, polyethylene wax slurry, superfine calcined kaolin and fumed silica in a formula amount, pre-dispersing at 900-1200 rpm, grinding at a temperature below 50 ℃ and a flow of 10-15L/min to obtain slurry;
step (2), adding cellulose acetate butyrate, an acrylic ester leveling agent and a polysiloxane leveling agent in the dosage amount into the step (1), and stirring for 5-10min at 300-600 r/min;
step (3), adding the silane coupling agent with the formula amount into the step (2), stirring for 5-10min at 300-600 rpm;
step (4) adding color paste into the step (3), stirring for 5-10min at 300-600 rpm;
and grinding the color paste in the preparation process.
2. The base color paint resin liquid coating for ultra-fast dry large-area spraying according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 40 parts of thermoplastic acrylic resin, 4 parts of PMA, 7 parts of BAC, 2 parts of DBE, 4 parts of CYC, 0.6 part of dispersing agent, 4 parts of silane coupling agent, 4 parts of polyethylene wax slurry, 10 parts of superfine calcined kaolin, 1 part of fumed silica, 22.7 parts of cellulose acetate butyrate, 0.5 part of acrylate leveling agent, 0.2 part of polysiloxane leveling agent and 100 parts of color paste.
3. The base color paint resin liquid coating for ultra-fast dry large-area spraying according to claim 1, wherein the color paste comprises the following raw materials in parts by weight: 33 parts of hydroxy acrylic resin, 2 parts of dispersing agent, 1 part of fumed silica, 60 parts of rutile titanium dioxide, 3 parts of PMA and 1 part of BAC.
4. The base color paint resin liquid coating for ultra-fast dry large-area spraying according to claim 1, wherein the preparation method of the color paste comprises the following steps:
adding BAC and PMA into a cylinder, stirring and mixing for 5-10min at 300-600 rpm, then adding dispersant, hydroxy acrylic resin, fumed silica and rutile titanium pigment, pre-dispersing at 900-1200 rpm, grinding by using a horizontal sand mill until the fineness of the raw materials is below 15um, and obtaining the color paste at the temperature below 50 ℃ and the flow rate of 10-15L/min.
5. The base paint resin liquid paint for ultra-fast dry large area spraying according to claim 1, wherein the dispersant is: lu Borun 20000 and 20000.
6. The base color paint resin liquid coating for ultra-fast dry large area spraying according to claim 1, wherein the raw materials in the step (1) are pre-dispersed and then ground to a fineness of less than 15um by using a horizontal sand mill.
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| CN116239921A (en) | 2023-06-09 |
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