CN111748256A - High-adhesion water transfer printing water-based paint and preparation method thereof - Google Patents
High-adhesion water transfer printing water-based paint 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
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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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
- C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
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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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention relates to a high-adhesion water-based paint for water transfer printing and a preparation method thereof, wherein the water-based paint comprises the following components in parts by mass: 40-60 parts of modified waterborne acrylic resin dispersoid, 5-10 parts of waterborne polyurethane dispersoid, 5-10 parts of waterborne cellulose acetate, 0.1-0.5 part of waterborne defoamer, 0.5-1 part of waterborne anti-settling additive, 0.1-0.5 part of waterborne wetting agent, 0.1-7 parts of waterborne dispersant, 0.1-0.5 part of waterborne anti-corrosion additive, 10-15 parts of film-forming additive, 10-15 parts of waterborne pigment, 10-15 parts of deionized water and 0.2-1.0 part of neutralizing additive. Compared with the prior art, the water-based environment-friendly water-based transfer printing coating has the advantages of water-based environment friendliness, excellent adhesive force performance, original excellent performance of a water-based transfer printing coating, and high adhesive force obtained by modifying main resin and proportionally mixing a formula.
Description
Technical Field
The invention relates to the field of coatings, and particularly relates to a high-adhesion water-based coating for water transfer printing and a preparation method thereof.
Background
The water-based process of paint and ink products is increasingly tightened, and the research of water-based paint becomes a hotspot in order to meet the water-based process of the products.
At present, the transfer printing coating for the automotive upholstery is widely used as a solvent type coating, the content of a solvent in the components of the solvent type coating is usually more than 40%, the environment is polluted, and meanwhile, the harm is caused to the health of coating workers. With the increasing importance of people on health and environmental protection, the nation also sets up the requirements on the air quality in the automobile and collects consumption taxes on the paint exceeding 420 g/L. The VOC requirements of automotive interior coatings from various automotive factories are gradually increasing, and these factors drive the automotive interior coatings to be healthy and environment-friendly.
However, the deviation of the adhesion of water-based paint has been a major problem preventing it from rapidly developing coverage.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a water-based transfer printing water-based paint with high adhesive force, which is obtained by modifying main resin and proportioning a formula, and has the advantages of water-based environmental protection, excellent adhesive force performance and the original excellent performance of the water-based transfer printing paint.
The purpose of the invention can be realized by the following technical scheme:
the demand for a wide variety of high performance aqueous coatings is also increasing, with water-transfer aqueous coatings being limited by their: (1) the aesthetic property is as follows: any natural grain, photo and picture file can be transferred on the product, so that the product has the desired scenery color. (2) The innovation is as follows: the water transfer printing technology can overcome the problems of complicated shapes and dead angles which can not be manufactured by the conventional printing and thermal transfer printing, pad printing, screen printing and surface coating. (3) The universality is as follows: it is suitable for surface printing of hardware, plastic, leather, glass, ceramic, wood and other products (cloth and paper are not suitable). Due to the attractiveness, universality and innovation, the method has a value-added effect on processed products. (4) Personalization: i shape I as you want, any pattern is designed as you want. (5) High efficiency: the picture is directly printed without plate making, and is immediately transferred (the whole process can be completed in 30 minutes, and most suitable for proofing). (6) The advantages are as follows: quick proofing, curved surface printing, personalized colored drawing and non-paper and cloth printed matter with small amount and many patterns. The advantages are widely applied, and the demand is increasing. However, the adhesion deviation is always a main problem that hinders the rapid development and coverage of the paint, so the invention aims to enhance the adhesion performance of the paint on the basis of taking the advantages into consideration, and the specific scheme is as follows:
a high-adhesion water-based paint for water transfer printing comprises the following components in parts by mass: 40-60 parts of modified waterborne acrylic resin dispersoid, 5-10 parts of waterborne polyurethane dispersoid, 5-10 parts of waterborne cellulose acetate, 0.1-0.5 part of waterborne defoamer, 0.5-1 part of waterborne anti-settling additive, 0.1-0.5 part of waterborne wetting agent, 0.1-7 parts of waterborne dispersant, 0.1-0.5 part of waterborne anti-corrosion additive, 10-15 parts of film-forming additive, 10-15 parts of waterborne pigment, 10-15 parts of deionized water and 0.2-1.0 part of neutralizing additive.
Furthermore, the molecular weight of the modified waterborne acrylic resin dispersoid is between 1000-10000, the molecular weight distribution index is between 1.0 and 2.0, and the structure is any one of trackless, block and alternating.
Further, the modified aqueous acrylic resin dispersion is prepared by the following steps:
(1) heating isopropanol, and dropwise adding Methyl Methacrylate (MMA), Butyl Acrylate (BA), methyl acrylate (AA), hydroxyethyl methacrylate (HEMA) and Azobisisobutyronitrile (AIBN) into the isopropanol;
(2) then, dripping hydroxypropyl acrylate, Methyl Methacrylate (MMA) and a small amount of Azodiisobutyronitrile (AIBN), and then heating and preserving heat;
(3) then cooling, dropwise adding ammonia water to adjust the pH value of the system to 7-8, and then adding deionized water and stirring;
(4) after stirring evenly for about 10min, the solvent isopropanol is pumped out to obtain the modified aqueous acrylic resin dispersoid.
Furthermore, the mass ratio of Methyl Methacrylate (MMA), Butyl Acrylate (BA), methyl acrylate (AA), hydroxyethyl methacrylate (HEMA) and Azobisisobutyronitrile (AIBN) is (20-30): (10-20): (10-20): (35-40): (3-5).
Further, the temperature of the isopropanol in the step (1) is increased to 81-83 ℃, and the dropping time is 40-60 min.
Further, the dripping time in the step (2) is 12-18min, the temperature rise is 83-86 ℃, and the heat preservation time is 2.5-3.5 h.
Further, the mass ratio of Azobisisobutyronitrile (AIBN) described in step (2) to Azobisisobutyronitrile (AIBN) described in step (1) is (0.05-0.1): 1; the mass ratio of the Methyl Methacrylate (MMA) in the step (2) to the Methyl Methacrylate (MMA) in the step (1) is (0.5-1): 1.
Further, the temperature for reducing the temperature in the step (3) is 48-52 ℃.
A preparation method of the high-adhesion water transfer printing water-based paint comprises the following steps:
(1) wetting and soaking an aqueous dispersant for the aluminum powder pigment or the pearlescent pigment by mass with deionized water for later use;
(2) adding the modified aqueous acrylic resin dispersoid, the aqueous polyurethane dispersoid, the aqueous anti-corrosion auxiliary agent, the aqueous defoaming agent and the film-forming auxiliary agent into a reactor according to the parts by mass, and uniformly stirring;
(3) adding a neutralization auxiliary agent to adjust the pH value of the system to be 7.5-8.0, adding the mixture obtained in the step (1), and uniformly stirring;
(4) adding water-based cellulose acetate and a water-based wetting agent according to the mass parts, uniformly stirring, adding a water-based anti-settling thickening agent, and then adjusting the pH value to 7.5-8.0 by using a neutralization auxiliary agent;
(5) adding water-based pigment according to the mass parts, adding deionized water to adjust the viscosity of the system to 50-60KU, and then adjusting the pH value of the system to 7.5-8.0 by using a neutralization auxiliary agent to obtain the high-adhesion water-based transfer printing coating.
Further, the wetting and soaking time in the step (1) is 1-5 h.
Compared with the prior art, the invention has the following characteristics:
(1) excellent adhesion: the adhesive property to the material is excellent, and the problem that the force-water transfer printing technology is easy to paint off is solved;
(2) different modified water-based acrylic resin can be selected for different materials so as to achieve good adhesiveness and construction property;
(3) different modified monomers are added in the resin polymerization process to meet different performance requirements. Such as: hard monomers (MMA, MA, ST) impart hardness, abrasion resistance, tensile strength, etc. to the coating film; the soft monomers (BA, EA, EHA) impart toughness, elongation, durability, etc. to the coating film.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
The preparation method of the high-adhesion water transfer printing water-based paint comprises the following steps
(1) Preparation of modified aqueous acrylic resin dispersion:
(1-1) A250 ml four-necked flask equipped with a reflux condenser, a dropping funnel with constant pressure, a mechanical stirrer and a thermometer was charged with an amount of isopropyl alcohol and heated to reflux temperature (about 82 ℃ C.), and after the reflux was stabilized, the monomer mixture of MMA, BA, AA, HEMA and AIBN was added dropwise over 40 to 60 min. After the dripping is finished for 20min,
(1-2) adding HEA and a small amount of AIBN again, and finishing adding within about 15 min; then the temperature is increased to 85 ℃, and the reaction is kept for 3 hours.
(1-3) cooling to 50 ℃, adding ammonia water to adjust the pH value of the system to 7-8, adding deionized water after about 10min, and strongly stirring.
(1-4) after uniformly stirring, extracting a solvent isopropanol, supplementing water, stirring for diluting, and discharging to obtain the required modified aqueous acrylic resin dispersion solution;
the mass ratio of Methyl Methacrylate (MMA), Butyl Acrylate (BA), methyl acrylate (AA), hydroxyethyl methacrylate (HEMA) and Azobisisobutyronitrile (AIBN) is 20:10:10:35: 5.
The mass ratio of Azobisisobutyronitrile (AIBN) in step (1-2) to Azobisisobutyronitrile (AIBN) in step (1-1) is 0.05: 1; the mass ratio of Methyl Methacrylate (MMA) described in the step (1-2) to Methyl Methacrylate (MMA) described in the step (1-1) was 0.5: 1.
(2) Soaking 7 parts of waterborne aluminum powder and silver bead powder in a waterborne dispersant (HY-804A) and 12.5 parts of deionized water for 2 hours for later use;
(3) adding 50 parts of modified waterborne acrylic resin dispersoid (with the molecular weight of 2000 and the molecular weight distribution index of 1.5), 7 parts of waterborne polyurethane dispersoid, 0.3 part of waterborne anti-corrosion auxiliary agent (MB-11), 0.15 part of waterborne defoaming agent (BYK-028) and 10 parts of film-forming auxiliary agent Loxanol CA5308 in turn during stirring, stirring for 20 minutes at the speed of 300-;
(4) then slowly adding the mixed solution in the step (2) while stirring, and stirring for 20min at the speed of 300-500 r/min;
(5) adding 10 parts of water-based cellulose acetate (20% Solus 3050) while stirring, slowly adding 0.3 part of water-based wetting agent (BYK-346), adding 1 part of water-based anti-settling additive (RHELSTE 299) to adjust the viscosity, and adjusting the pH value to about 7.8 by using a neutralizing additive DMEA;
(6) and (3) adjusting the color difference to a specified value by using 10-15 parts of water-based pigment, and adjusting the pH to 7.8 by using a neutralizing additive DMEA to obtain the high-adhesion water-based water transfer printing coating.
The water transfer printing coating obtained above is used for manufacturing a plate, and the test result is as follows:
example 2
The preparation method of the high-adhesion water transfer printing water-based paint comprises the following steps
(1) Preparation of modified aqueous acrylic resin dispersion:
(1-1) A250 ml four-necked flask equipped with a reflux condenser, a dropping funnel with constant pressure, a mechanical stirrer and a thermometer was charged with an amount of isopropyl alcohol and heated to reflux temperature (about 82 ℃ C.), and after the reflux was stabilized, the monomer mixture of MMA, BA, AA, HEMA and AIBN was added dropwise over 40 to 60 minutes.
(1-2) after finishing dripping for 20min, starting to drip HEA and a small amount of AIBN, and finishing dripping for about 15 min; then the temperature is increased to 85 ℃, and the reaction is kept for 3 hours.
(1-3) cooling to 50 ℃, adding ammonia water to adjust the pH value of the system to 7-8, adding deionized water after about 10min, and strongly stirring.
(1-4) after uniformly stirring, extracting a solvent isopropanol, supplementing water, stirring for diluting, and discharging to obtain the required modified aqueous acrylic resin dispersion solution;
the mass ratio of Methyl Methacrylate (MMA), Butyl Acrylate (BA), methyl acrylate (AA), hydroxyethyl methacrylate (HEMA) and Azobisisobutyronitrile (AIBN) is 20:10:10:35: 5.
The mass ratio of Azobisisobutyronitrile (AIBN) in step (1-2) to Azobisisobutyronitrile (AIBN) in step (1-1) is 0.05: 1; the mass ratio of Methyl Methacrylate (MMA) described in the step (1-2) to Methyl Methacrylate (MMA) described in the step (1-1) was 0.5: 1.
(2) Soaking 7 parts of water-based aluminum powder and silver bead powder with a water-based dispersant (such as HY-804A) and 12.5 parts of deionized water for 2 hours for later use;
(3) adding 50 parts of modified waterborne acrylic resin dispersoid (with the molecular weight of 2000 and the molecular weight distribution index of 1.5), 7 parts of waterborne polyurethane dispersoid, 0.3 part of waterborne anti-corrosion auxiliary agent (MB-11), 0.15 part of waterborne defoaming agent (BYK-028) and 10 parts of film-forming auxiliary agent Loxanol CA5308 in turn during stirring, stirring for 20 minutes at the speed of 300-;
(4) then slowly adding the mixed solution in the step (2) while stirring, and stirring for 20min at the speed of 300-500 r/min;
(5) adding 10 parts of water-based cellulose acetate (20% Solus 3050) while stirring, slowly adding 0.3 part of water-based wetting agent (BYK-346), adding 1 part of water-based anti-settling additive (RHELSTE 299) to adjust the viscosity, and adjusting the pH value to about 7.8 by using a neutralizing additive DMEA;
(6) and adjusting the color difference to a specified value by using a corresponding water-based pigment, and adjusting the pH to 7.8 by using a neutralizing additive DMEA to obtain the high-adhesion water-based water transfer printing coating.
Example 3
The preparation method of the high-adhesion water transfer printing water-based paint comprises the following steps
(1) Preparation of modified aqueous acrylic resin dispersion:
(1-1) A250 ml four-necked flask equipped with a reflux condenser, a dropping funnel with constant pressure, a mechanical stirrer and a thermometer was charged with an amount of isopropyl alcohol and heated to reflux temperature (about 82 ℃ C.), and after the reflux was stabilized, the monomer mixture of MMA, BA, AA, HEMA and AIBN was added dropwise over 40 to 60 minutes.
(1-2) after finishing the dripping for 20min, starting to drip HEA, MMA (1:1) and a small amount of AIBN, and finishing the dripping for about 15 min; then the temperature is increased to 85 ℃, and the reaction is kept for 3 hours.
(1-3) cooling to 50 ℃, adding ammonia water to adjust the pH value of the system to 7-8, adding deionized water after about 10min, and strongly stirring.
(1-4) after uniformly stirring, extracting a solvent isopropanol, supplementing water, stirring for diluting, and discharging to obtain the required modified aqueous acrylic resin dispersion solution;
the mass ratio of Methyl Methacrylate (MMA), Butyl Acrylate (BA), methyl acrylate (AA), hydroxyethyl methacrylate (HEMA) and Azobisisobutyronitrile (AIBN) is 30:20:20:40: 3.
The mass ratio of Azobisisobutyronitrile (AIBN) in step (1-2) to Azobisisobutyronitrile (AIBN) in step (1-1) is 0.1: 1; the mass ratio of Methyl Methacrylate (MMA) in the step (1-2) to Methyl Methacrylate (MMA) in the step (1-1) is 1: 1.
(2) Soaking 7 parts of water-based aluminum powder and silver bead powder with a water-based dispersant (such as HY-804A) and 12.5 parts of deionized water for 2 hours for later use;
(3) adding 50 parts of modified waterborne acrylic resin dispersoid (with the molecular weight of 2000 and the molecular weight distribution index of 1.5), 7 parts of waterborne polyurethane dispersoid, 0.3 part of waterborne anti-corrosion auxiliary agent (MB-11), 0.15 part of waterborne defoaming agent (BYK-028) and 10 parts of film-forming auxiliary agent Loxanol CA5308 in turn during stirring, stirring for 20 minutes at the speed of 300-;
(4) then slowly adding the mixed solution in the step (2) while stirring, and stirring for 20min at the speed of 300-500 r/min;
(5) adding 10 parts of water-based cellulose acetate (20% Solus 3050) while stirring, slowly adding 0.3 part of water-based wetting agent (BYK-346), adding 1 part of water-based anti-settling additive (RHELSTE 299) to adjust the viscosity, and adjusting the pH value to about 7.8 by using a neutralizing additive DMEA;
(6) and adjusting the color difference to a specified value by using a corresponding water-based pigment, and adjusting the pH to 7.8 by using a neutralizing additive DMEA to obtain the high-adhesion water-based water transfer printing coating.
Comparative example 1
(1) Soaking 7 parts of water-based aluminum powder and silver bead powder with a water-based dispersant (such as HY-804A) and 14 parts of deionized water for 2 hours for later use;
(2) adding 50 parts of AS-2800 (Fangguan city square), 7 parts of aqueous polyurethane dispersion, 0.3 part of aqueous anti-corrosion auxiliary agent (MB-11), 0.15 part of aqueous defoaming agent (BYK-028) and 10 parts of film-forming auxiliary agent Loxanol CA5308 in sequence during stirring, stirring for 20 minutes at 500r/min at 300-;
(3) then slowly adding the mixed solution in the step (1) while stirring, and stirring for 20min at the speed of 300-500 r/min;
(4) adding 10 parts of water-based cellulose acetate (20% Solus 3050) while stirring, slowly adding 0.3 part of water-based wetting agent (BYK-346), adding 1 part of water-based anti-settling additive (RHELSTE 299) to adjust the viscosity, and adjusting the pH value to about 7.8 by using a neutralizing additive DMEA;
(5) and adjusting the color difference to a specified value by using a corresponding water-based pigment, and adjusting the pH to 7.8 by using a neutralizing additive DMEA to obtain the high-adhesion water-based water transfer printing coating.
Comparative example 2
(1) Soaking 7 parts of water-based aluminum powder and silver bead powder with a water-based dispersant (such as HY-804A) and 14 parts of deionized water for 2 hours for later use;
(2) adding 50 parts of AA-566 (in Korea), 7 parts of aqueous polyurethane dispersion, 0.3 part of aqueous anti-corrosion auxiliary agent (MB-11), 0.15 part of aqueous defoaming agent (BYK-028), 12.5 parts of deionized water and 10 parts of film-forming auxiliary agent Loxanol CA5308 in sequence during stirring, stirring for 20 minutes at 500r/min under 300-;
(3) then slowly adding the mixed solution in the step (1) while stirring, and stirring for 20min at the speed of 300-500 r/min;
(4) adding 10 parts of water-based cellulose acetate (20% Solus 3050) while stirring, slowly adding 0.3 part of water-based wetting agent (BYK-346), adding 1 part of water-based anti-settling additive (RHELSTE 299) to adjust the viscosity, and adjusting the pH value to about 7.8 by using a neutralizing additive DMEA;
(5) and adjusting the color difference to a specified value by using a corresponding water-based pigment, and adjusting the pH to 7.8 by using a neutralizing additive DMEA to obtain the high-adhesion water-based water transfer printing coating.
The comparative examples of the various examples have a comparison of their properties as shown in the following table:
the embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The high-adhesion water-based paint for water transfer printing is characterized by comprising the following components in parts by mass: 40-60 parts of modified waterborne acrylic resin dispersoid, 5-10 parts of waterborne polyurethane dispersoid, 5-10 parts of waterborne cellulose acetate, 0.1-0.5 part of waterborne defoamer, 0.5-1 part of waterborne anti-settling additive, 0.1-0.5 part of waterborne wetting agent, 0.1-7 parts of waterborne dispersant, 0.1-0.5 part of waterborne anti-corrosion additive, 10-15 parts of film-forming additive, 10-15 parts of waterborne pigment, 10-15 parts of deionized water and 0.2-1.0 part of neutralizing additive.
2. The high-adhesion water-based paint for water transfer printing according to claim 1, wherein the modified water-based acrylic resin dispersion has a molecular weight of 1000-10000, a molecular weight distribution index of 1.0-2.0, and a structure of any one of trackless, block and alternating.
3. The high-adhesion water-based transfer printing coating as claimed in claim 1, wherein the modified water-based acrylic resin dispersion is prepared by the following steps:
(1) heating isopropanol, and dropwise adding methyl methacrylate, butyl acrylate, methyl acrylate, hydroxyethyl methacrylate and azobisisobutyronitrile into the isopropanol;
(2) then dripping hydroxypropyl acrylate, methyl methacrylate and a small amount of azodiisobutyronitrile, and then heating and preserving heat;
(3) then cooling, dropwise adding ammonia water to adjust the pH value of the system to 7-8, and then adding deionized water and stirring;
(4) and after stirring uniformly, extracting the isopropanol solvent to obtain the modified aqueous acrylic resin dispersoid.
4. The water-based paint with high adhesion for water transfer printing of claim 3, wherein the mass ratio of methyl methacrylate, butyl acrylate, methyl acrylate, hydroxyethyl methacrylate and azobisisobutyronitrile is (20-30): (10-20): (35-40): (3-5).
5. The high-adhesion water-based transfer printing coating as claimed in claim 3, wherein the temperature of the isopropanol in the step (1) is increased to 81-83 ℃, and the dropping time is 40-60 min.
6. The high-adhesion water-based transfer printing coating as claimed in claim 3, wherein the dropping time in the step (2) is 12-18min, the temperature rise is 83-86 ℃, and the heat preservation time is 2.5-3.5 h.
7. The high-adhesion water-based transfer printing coating material according to claim 3, wherein the mass ratio of the azobisisobutyronitrile in the step (2) to the azobisisobutyronitrile in the step (1) is (0.05-0.1): 1; the mass ratio of the methyl methacrylate in the step (2) to the methyl methacrylate in the step (1) is (0.5-1): 1.
8. The high-adhesion water-based transfer printing coating material according to claim 3, wherein the temperature for reducing the temperature in the step (3) is 48-52 ℃.
9. The preparation method of the high-adhesion water transfer printing water-based paint according to claim 1, characterized by comprising the following steps:
(1) wetting and soaking the aqueous dispersant by deionized water according to the mass part for later use;
(2) adding the modified aqueous acrylic resin dispersoid, the aqueous polyurethane dispersoid, the aqueous anti-corrosion auxiliary agent, the aqueous defoaming agent and the film-forming auxiliary agent into a reactor according to the parts by mass, and uniformly stirring;
(3) adding a neutralization auxiliary agent to adjust the pH value of the system to be 7.5-8.0, adding the mixture obtained in the step (1), and uniformly stirring;
(4) adding water-based cellulose acetate and a water-based wetting agent according to the mass parts, uniformly stirring, adding a water-based anti-settling thickening agent, and then adjusting the pH value to 7.5-8.0 by using a neutralization auxiliary agent;
(5) adding water-based pigment according to the mass parts, adding deionized water to adjust the viscosity of the system to 50-60KU, and then adjusting the pH value of the system to 7.5-8.0 by using a neutralization auxiliary agent to obtain the high-adhesion water-based transfer printing coating.
10. The preparation method of the high-adhesion water-based transfer printing coating material according to claim 9, wherein the wetting and soaking time in the step (1) is 1-5 h.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670441A (en) * | 2015-12-03 | 2016-06-15 | 陶栋梁 | Water-based paint composition and preparation method thereof |
| CN108587351A (en) * | 2018-03-30 | 2018-09-28 | 上海长润化工有限公司 | A kind of automotive trim water transfer aqueous priming paint coating and preparation method thereof |
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2020
- 2020-06-30 CN CN202010612396.0A patent/CN111748256A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670441A (en) * | 2015-12-03 | 2016-06-15 | 陶栋梁 | Water-based paint composition and preparation method thereof |
| CN108587351A (en) * | 2018-03-30 | 2018-09-28 | 上海长润化工有限公司 | A kind of automotive trim water transfer aqueous priming paint coating and preparation method thereof |
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