CN111849280A - Water-based plastic paint, preparation method and application - Google Patents
Water-based plastic paint, preparation method and application Download PDFInfo
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- CN111849280A CN111849280A CN202010714960.XA CN202010714960A CN111849280A CN 111849280 A CN111849280 A CN 111849280A CN 202010714960 A CN202010714960 A CN 202010714960A CN 111849280 A CN111849280 A CN 111849280A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
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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
- C09D7/20—Diluents or solvents
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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
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a water-based plastic paint, a preparation method and application thereof, wherein the water-based plastic paint comprises the following components in parts by weight: 50-75 parts of water-based acrylic resin emulsion; 2-26 parts of pigment; 1-2 parts of a dispersant; 0.2-0.5 part of wetting and leveling agent; 0.1-1 part of defoaming agent; 10-15 parts of a film-forming assistant; 3-5 parts of a thickening agent; 0.1-0.3 part of pH regulator; 1-30 parts of deionized water; wherein the glass transition temperature of the aqueous acrylic resin emulsion is more than or equal to 90 ℃. The aqueous plastic paint has the characteristics of high wear resistance, good film forming property, chemical resistance, environmental protection, quick drying in construction and the like, and because the aqueous emulsion is used and the deionized water is used as the diluent to replace the traditional benzene solvent, the VoC content in the finished paint can be effectively reduced, and the environmental protection requirement is better met.
Description
Technical Field
The invention belongs to the technical field of paints, and particularly relates to a water-based plastic paint, a preparation method and application.
Background
The plastic paint is used as finish paint for coating, is widely applied to the surfaces of products such as household appliances, electronic products, toys and the like, and has higher requirements on better chemical resistance and environmental protection.
After the existing products coated with plastic paint on the surface are used for a long time, the plastic paint is easily damaged by chemicals (such as sweat) or is partially melted, and the adverse phenomena of decoloration, gloss reduction and the like are generated.
Therefore, it is urgently needed to develop a plastic paint with better chemical resistance.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a water-based plastic paint, a preparation method and an application thereof, so as to solve the problem that the chemical resistance of the existing plastic paint is poor. In order to solve the technical problems, the invention provides a water-based plastic paint which comprises the following components in parts by weight:
50-75 parts of water-based acrylic resin emulsion;
2-26 parts of pigment;
1-2 parts of a dispersant;
0.2-0.5 part of wetting and leveling agent;
0.1-1 part of defoaming agent;
10-15 parts of a film-forming assistant;
3-5 parts of a thickening agent;
0.1-0.3 part of pH regulator;
1-30 parts of deionized water;
wherein the glass transition temperature of the aqueous acrylic resin emulsion is more than or equal to 90 ℃.
Further, the film-forming assistant is an alcohol ether solvent or an alcohol ester solvent.
Further, the pigment is at least one of titanium dioxide and organic pigment.
Further, the pigment also comprises aluminum powder.
Further, the light-absorbing material also comprises a delustering agent.
Further, the matting agent is 0.1 to 6 parts by weight.
A preparation method of the water-based plastic paint comprises the following steps:
step A, uniformly mixing 1-30 parts of deionized water, 1-2 parts of dispersing agent, 0.1-1 part of defoaming agent, 2-26 parts of pigment, 1.5-2.5 parts of thickening agent and 5-10 parts of film-forming agent to obtain water-based resin-free color paste;
step B, sequentially adding 50-75 parts of aqueous acrylic resin emulsion, the balance of defoaming agent, 0.1-0.3 part of pH regulator, 0.2-0.5 part of wetting and leveling agent, the balance of film forming agent and the balance of thickening agent into the aqueous resin-free color paste to obtain the aqueous plastic paint;
wherein, when each raw material is added, the raw materials are mixed evenly and then the next raw material is added.
Further, the pigment is formed by mixing more than 2 colors of pigments.
The preparation method of the water-based plastic paint comprises the steps of respectively preparing single-color water-based plastic paints with different colors according to the method, and then mixing the single-color water-based plastic paints to obtain the water-based plastic paint with the target color.
The application of the water-based plastic paint is to mix the water-based plastic paint or the water-based plastic paint prepared by the preparation method with deionized water and adjust the mixture to a target viscosity.
The embodiment of the invention has the following beneficial effects: the plastic paint prepared by taking the acrylic resin emulsion with high TG point as a main component and matching with the film forming additive, the wetting and leveling agent, the defoaming agent and the thickening agent has the characteristics of high wear resistance, good film forming property, chemical resistance, environmental protection, quick drying in construction and the like, and solves the problem that the plastic paint is easily damaged by chemicals (such as sweat) or is partially melted to generate undesirable defects of decoloration, gloss reduction and the like after the existing product coated with the plastic paint on the surface is used for a long time. In addition, deionized water is adopted as a diluent of the aqueous emulsion used in the invention to replace the traditional benzene solvent, so that the VoC content in the finished coating can be effectively reduced, and the aqueous emulsion meets the requirement of environmental protection.
Detailed Description
The invention provides a plastic paint which comprises the following components in parts by weight: 50-75 parts of water-based acrylic resin emulsion; 2-26 parts of pigment; 1-2 parts of a dispersant; 0.2-0.5 part of wetting and leveling agent; 0.1-1 part of defoaming agent; 10-15 parts of a film-forming assistant; 3-5 parts of a thickening agent; 0.1-0.3 part of pH regulator; 1-30 parts of deionized water, wherein the glass transition Temperature (TG) of the aqueous acrylic resin emulsion is more than or equal to 90 ℃.
In the plastic paint component, the functions of all the additives are as follows: the wetting and leveling agent can well wet the plastic paint and the substrate, and the plastic paint is uniformly distributed on the substrate, so that various surface defects are reduced. Such as shrinkage cavity, fish eye, orange peel, etc. The defoaming agent reduces the generation of bubbles in the construction and storage processes of the plastic paint, eliminates the generated bubbles, and finally achieves the aims of no bubbles on the surface of a paint film, no pinholes and other surface defects. The film-forming assistant can promote the micro-droplets of the coating polymer to be dissolved and fused into a continuous film, and the film-forming assistant gradually volatilizes and escapes after film formation, thereby playing a role in quick drying. The thickening agent can keep the pigment with large specific gravity in the plastic paint in a uniformly dispersed state for a longer time, prevent the pigment from precipitating, and prolong the shelf life of the plastic paint.
The invention takes the acrylic resin emulsion with high TG point (TG is more than or equal to 90 ℃) as a main component, and the plastic paint formed by the acrylic resin emulsion with high TG point has the characteristics of good chemical resistance, high hardness, good adhesive force to various base materials and the like. However, the high-TG resins require high temperature and long time for film formation, and therefore, a larger amount of high-boiling-point film-forming agent needs to be supplemented to achieve good film-forming effect, and an excessive amount of high-boiling-point film-forming agent inevitably affects the surface drying rate. The invention provides a plastic paint which is made by taking acrylic resin emulsion with high TG point as a main component and matching with a film forming additive, a wetting leveling agent, a defoaming agent and a thickening agent, and has the characteristics of high wear resistance, good film forming property, chemical resistance, environmental protection, quick drying in construction and the like. In addition, deionized water is adopted as a diluent of the aqueous emulsion liquid used in the invention to replace the traditional benzene solvent, no volatile organic compound (VoC) is contained, the VoC content in the finished coating can be effectively reduced, the VoC in the whole component is less than 420g/L, and almost no odor exists. According to environmental protection tests, heavy metals, o-benzene and PAHS can pass RN71-3, ASTM F963, RoHS (EU)26015/863 and GB 24613 requirements.
In one embodiment, the film forming auxiliary agent is an alcohol ether solvent or an alcohol ester solvent, the film forming agent has good volatility, can keep the leveling property of a coating film after volatilization, reduces the defects of sagging, blooming and the like, can realize the effect of quickly forming a film by adding a small amount of the film forming auxiliary agent on the premise of ensuring the high TG point of the acrylic resin, perfectly unifies the production of chemical resistance and film forming efficiency, and can be compounded with partial antifreezing agent in the film forming auxiliary agent for cold regions so as to increase the application range of the product.
In one embodiment, the pH adjusting agent is an ammonia based weakly basic compound; the thickening agent is polyurethane; the wetting and leveling agent is modified organic silicon.
In one embodiment, the pigment can be titanium dioxide or an organic pigment, or the mixture of the titanium dioxide and the organic pigment can realize the diversification of the color. Preferably, aluminum powder can be added into the pigment, different metal textures can be obtained along with different particle sizes of the aluminum powder, luxurious and honorable visual senses can be generated, and the additional value of the product is improved.
In one embodiment, a flatting agent can be further added, preferably, the addition amount is 0.1-6 parts by weight, so that the obtained plastic paint has low surface gloss and good soft feeling, has a certain thixotropic anti-sagging effect, and reduces sagging during construction.
Based on the embodiment of the plastic paint, the invention also provides an embodiment of a preparation method of the plastic paint, which comprises the following steps:
and step A, uniformly mixing 1-30 parts of deionized water, 1-2 parts of dispersing agent, 0.1-1 part of defoaming agent, 2-26 parts of pigment, 1.5-2.5 parts of thickening agent and 5-10 parts of film-forming agent to obtain the water-based resin-free color paste.
And step B, sequentially adding 50-75 parts of aqueous acrylic resin emulsion, the balance of defoaming agent, 0.1-0.3 part of pH regulator, 0.2-0.5 part of wetting and leveling agent, the balance of film forming agent and the balance of thickening agent into the aqueous resin-free color paste to obtain the plastic paint.
Specifically, each raw material is added, and then the next raw material is added after the raw materials are uniformly mixed. According to the method, the single-color plastic paint can be prepared, and users can mix various single-color plastic paints according to different proportions according to needs to obtain the plastic paint with the needed color. When the pigment is added in step a, a mixed pigment capable of obtaining a target color may be directly added. The plastic paint can be directly used for coating, or can be diluted to the required viscosity by adding deionized water before use and then coated.
The invention is further illustrated by the following specific examples.
EXAMPLE 1 preparation of white Plastic paint
(1) The preparation method of the water-based resin-free white color paste specifically comprises the following steps:
and step S11, adding 1 part of polymer dispersant into 8 parts of deionized water, and uniformly stirring.
And step S12, adding 0.1 part of alkynol defoaming agent, and uniformly stirring.
And step S13, adding 25 parts of titanium dioxide, and uniformly stirring.
And step S14, adding 2 parts of gas silicon anti-settling agent (thickening agent), and uniformly stirring.
And step S15, adding 5 parts of an antifreezing agent (film forming agent), and uniformly stirring to obtain the water-based resin-free white color paste.
(2) The preparation of the white plastic paint specifically comprises the following steps:
and step S21, adding 50 parts of water-based acrylic resin emulsion into the water-based resin-free white color paste prepared in the step (1), and uniformly stirring at a medium speed.
Step S22, adding 0.2 part of alkynol defoaming agent, and dispersing at high speed; after being dispersed evenly, the mixture is adjusted to be at medium speed.
And step S23, adding 0.1 part of pH regulator, and uniformly stirring at medium speed.
And step S24, adding 0.2 part of wetting and leveling agent, and uniformly stirring at medium speed.
And step S25, adding 5 parts of alcohol ether film-forming assistant, and uniformly stirring at medium speed.
And step S26, adding 1 part of gas silicon anti-settling agent, and uniformly stirring at medium speed to obtain the white plastic paint.
EXAMPLE 2 preparation of Black Plastic paint
(1) The preparation method of the water-based resin-free black color paste specifically comprises the following steps:
and step S11, adding 2 parts of polymer dispersant into 28 parts of deionized water, and uniformly stirring.
And step S12, adding 0.4 part of alkynol defoaming agent, and uniformly stirring.
And step S13, adding 12 parts of carbon black and stirring uniformly.
And step S14, adding 2 parts of gas silicon anti-settling agent (thickening agent), and uniformly stirring.
And step S15, adding 5 parts of an antifreezing agent (film forming agent), and uniformly stirring to obtain the water-based resin-free black color paste.
(2) The preparation of the black plastic paint specifically comprises the following steps:
and step S21, adding 72 parts of water-based acrylic resin emulsion into the water-based resin-free black color paste prepared in the step (1), and uniformly stirring at a medium speed.
Step S22, adding 0.5 part of alkynol defoaming agent, and dispersing at high speed; after being dispersed evenly, the mixture is adjusted to be at medium speed.
And step S23, adding 0.25 part of pH regulator, and uniformly stirring at medium speed.
And step S24, adding 0.45 part of wetting and leveling agent, and uniformly stirring at medium speed.
And step S25, adding 10 parts of alcohol ether film-forming aid, and uniformly stirring at medium speed.
And step S26, adding 2.5 parts of gas-silicon anti-settling agent, and uniformly stirring at medium speed to obtain the black plastic paint.
EXAMPLE 3 preparation of Red Plastic paint
(1) The preparation method of the water-based resin-free red color paste specifically comprises the following steps:
and step S11, adding 1.65 parts of polymer dispersant into 20 parts of deionized water, and uniformly stirring.
And step S12, adding 0.3 part of alkynol defoaming agent, and uniformly stirring.
And step S13, adding 15 parts of red organic pigment and uniformly stirring.
And step S14, adding 2 parts of gas silicon anti-settling agent (thickening agent), and uniformly stirring.
And step S15, adding 5 parts of an antifreezing agent (film forming agent), and uniformly stirring to obtain the water-based resin-free red color paste.
(2) The red plastic paint is prepared by the following steps:
and step S21, adding 72 parts of water-based acrylic resin emulsion into the water-based resin-free red color paste prepared in the step (1), and uniformly stirring at a medium speed.
Step S22, adding 0.35 part of alkynol defoaming agent, and dispersing at high speed; after being dispersed evenly, the mixture is adjusted to be at medium speed.
And step S23, adding 0.25 part of pH regulator, and uniformly stirring at medium speed.
And step S24, adding 0.45 part of wetting and leveling agent, and uniformly stirring at medium speed.
And step S25, adding 8 parts of alcohol ether film-forming aid, and uniformly stirring at medium speed.
And step S26, adding 2 parts of gas-silicon anti-settling agent, and uniformly stirring at medium speed to obtain the red plastic paint.
When the aqueous resin-free monochromatic color paste is prepared, the monochromatic pigments can be compounded and mixed together to prepare the required color directly, or various monochromatic plastic paints can be prepared respectively and then mixed according to the requirements. When coating, deionized water can be added to further dilute to the required viscosity according to the requirement.
The plastic paint obtained in examples 1-3 was diluted with 5 times of deionized water, mixed uniformly, coated on a plastic substrate, dried, and subjected to performance testing, the testing methods and results are shown in table 1 below.
TABLE 1 Performance test
As can be seen from the above description, compared with the prior art, the beneficial effects of the present invention are: the plastic paint prepared by taking the acrylic resin emulsion with high TG point as a main component and matching with the film forming additive, the wetting and leveling agent, the defoaming agent and the thickening agent has the characteristics of high wear resistance, good film forming property, chemical resistance, environmental protection, quick drying in construction and the like, and solves the problem that the plastic paint is easily damaged by chemicals (such as sweat) or is partially melted to generate undesirable defects of decoloration, gloss reduction and the like after the existing product coated with the plastic paint on the surface is used for a long time. In addition, deionized water is adopted as a diluent of the aqueous emulsion used in the invention to replace the traditional benzene solvent, so that the VoC content in the finished coating can be effectively reduced, and the aqueous emulsion meets the requirement of environmental protection.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. The water-based plastic paint is characterized by comprising the following components in parts by weight:
50-75 parts of water-based acrylic resin emulsion;
2-26 parts of pigment;
1-2 parts of a dispersant;
0.2-0.5 part of wetting and leveling agent;
0.1-1 part of defoaming agent;
10-15 parts of a film-forming assistant;
3-5 parts of a thickening agent;
0.1-0.3 part of pH regulator;
1-30 parts of deionized water;
wherein the glass transition temperature of the aqueous acrylic resin emulsion is more than or equal to 90 ℃.
2. The aqueous plastic paint according to claim 1, wherein the film-forming aid is an alcohol ether solvent or an alcohol ester solvent.
3. The aqueous plastic paint of claim 1, wherein the pigment is at least one of titanium dioxide and an organic pigment.
4. The aqueous plastic paint of claim 3, wherein the pigment further comprises aluminum powder.
5. The aqueous plastic paint of claim 1, further comprising a matting agent.
6. The aqueous plastic paint according to claim 5, wherein the matting agent is 0.1 to 6 parts by weight.
7. A method of preparing the aqueous plastic paint of claim 1, comprising:
step A, uniformly mixing 1-30 parts of deionized water, 1-2 parts of dispersing agent, 0.1-1 part of defoaming agent, 2-26 parts of pigment, 1.5-2.5 parts of thickening agent and 5-10 parts of film-forming agent to obtain water-based resin-free color paste;
step B, sequentially adding 50-75 parts of aqueous acrylic resin emulsion, the balance of defoaming agent, 0.1-0.3 part of pH regulator, 0.2-0.5 part of wetting and leveling agent, the balance of film forming agent and the balance of thickening agent into the aqueous resin-free color paste to obtain the aqueous plastic paint;
wherein, when each raw material is added, the raw materials are mixed evenly and then the next raw material is added.
8. The method for preparing the water-based plastic paint according to claim 7, wherein the pigment is formed by mixing more than 2 colors of pigments.
9. A preparation method of water-based plastic paint is characterized in that single-color water-based plastic paint with different colors is respectively prepared according to the method of claim 7, and then the single-color water-based plastic paints are mixed to obtain the water-based plastic paint with the target color.
10. Use of an aqueous plastic paint, characterized in that the aqueous plastic paint according to any one of claims 1 to 6 or the aqueous plastic paint prepared by the preparation method according to any one of claims 7 to 9 is mixed with deionized water to adjust to a target viscosity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010714960.XA CN111849280A (en) | 2020-07-23 | 2020-07-23 | Water-based plastic paint, preparation method and application |
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| CN202010714960.XA CN111849280A (en) | 2020-07-23 | 2020-07-23 | Water-based plastic paint, preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113549379A (en) * | 2021-05-24 | 2021-10-26 | 江门市冠华科技有限公司 | Laser-engravable water-based shading paint for plastic keys |
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Application publication date: 20201030 |