CN112745707A - Environment-friendly coating and preparation method and application thereof - Google Patents
Environment-friendly coating and preparation method and application thereof Download PDFInfo
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- CN112745707A CN112745707A CN202011592949.7A CN202011592949A CN112745707A CN 112745707 A CN112745707 A CN 112745707A CN 202011592949 A CN202011592949 A CN 202011592949A CN 112745707 A CN112745707 A CN 112745707A
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- C09D5/08—Anti-corrosive 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
- C09D7/43—Thickening agents
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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
Abstract
The invention relates to the technical field of coatings, and particularly discloses an environment-friendly coating and a preparation method and application thereof. The environment-friendly coating adopts water-based acrylic acid as a base material for film formation, is environment-friendly, environment-friendly and nontoxic, has good washing resistance, stain resistance, aging resistance and corrosion resistance, is wide in application range, is particularly suitable for the field of home decoration, and has wide market prospect.
Description
Technical Field
The invention belongs to the field of indoor decoration, particularly relates to a decoration material, and a preparation method and application thereof, and particularly relates to an environment-friendly coating, and a preparation method and application thereof.
Background
In recent years, with the increasing demand of people for home decoration and the increasing demand of people, the quality of environment-friendly materials is also more and more emphasized. The coating is used as a home decoration material with a large dosage, is usually coated on the surface of a wall or furniture and directly contacts with air, so that the coating is easy to age and deteriorate. In addition, if the environmental protection performance is not good, the user is also greatly influenced. Therefore, with the enhancement of environmental protection and health consciousness of people, the water-based paint is popular with consumers in the development time of recent years by virtue of the characteristics of low carbon, energy conservation, environmental friendliness and the like. Meanwhile, along with the improvement of production technology and the diversification of performance, the water-based paint exists in a plurality of industries, such as buildings, decorations, furniture, home decoration, household appliances, automobiles, ships, traffic, light industry, electric power and the like; in addition, the excellent environmental protection property of the water-based paint is continuously replacing solvent-based paint, occupies the market share of the solvent-based paint and enables the solvent-based paint to continuously develop at a high speed.
The water-based paint is paid attention to the market, so that the use amount of toxic organic solvents can be effectively reduced, the pollution to the atmosphere is reduced, the water-based paint belongs to a resource-saving material because the solvent is water, the coating environment is safe and sanitary, a storage place of a construction place has no fire hazard, construction equipment can be used without being greatly modified, post-combustion equipment does not need to be invested, energy is saved, and the like. However, since the paint product is directly exposed to the outside and is often stained and contacted by various stains, and a user also frequently scrubs the paint product, the water-based paint is required to have certain brushing resistance, stain resistance and corrosion resistance on the basis of no toxicity and environmental protection so as to ensure long-term use without aging and aging, thereby meeting the use requirements of consumers.
Disclosure of Invention
The invention aims to provide an environment-friendly coating, and a preparation method and application thereof.
Therefore, the technical scheme of the invention is as follows:
in a first aspect, the invention provides an environment-friendly coating, which at least comprises the following components in parts by weight:
water-based acrylic acid: 65-85 parts by weight
Nano silicon dioxide acrylate composite emulsion: 20-25 parts by weight
Propylene glycol diacetate: 15-25 parts by weight
Ethylene glycol butyl ether: 24-37 parts by weight
Polyvinyl alcohol: 1.5-2.5 parts by weight
N-butanol: 3 to 5 parts by weight of
Polysiloxane: 0.08-0.14 weight part
Nonionic polyurethane thickener: 0.3 to 0.8 part by weight
Alcohol nonionic surfactant: 0.4 to 1 weight portion
Deionized water: 50-60 parts by weight;
the environmentally friendly coating further comprises isocyanate, wherein the weight part of the isocyanate is 15-25% of the weight part of the hydroxyl in the polyvinyl alcohol (the values can be, for example, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25% and all values in the range, which are not listed due to space limitation).
The invention adopts the water-based acrylic acid as the base material for film formation, mainly considers the good weather resistance of the base material, and matches with the alcohol nonionic surfactant, the nonionic polyurethane thickener and other additives, thereby further improving the characteristics of wetting, leveling, defoaming, anti-sticking, thickening and the like of the base material, improving the adaptability of the base material and being capable of being applied to wider construction and use conditions. In addition, hydroxyl functional groups of the polyvinyl alcohol and the n-butyl alcohol can play a role in crosslinking with isocyanate (a high molecular chain of the polyvinyl alcohol has a large specific surface area, and the n-butyl alcohol also plays a role in assisting dissolution and film formation), and form a covalent bond with a matrix material, namely the waterborne acrylic acid, so that the coating is ensured to have a regular arrangement structure; the gaps of the arrangement structure are filled by the nano silicon dioxide acrylate composite emulsion. Because the deionized water volatilizes, the nano silicon dioxide acrylate composite emulsion can further fill up the gap left by water volatilization, and the compactness and the density inside the coating are improved, thereby macroscopically improving the strength of the coating.
Wherein the aqueous acrylic acid may be in the range of 65 parts by weight, 66 parts by weight, 67 parts by weight, 68 parts by weight, 69 parts by weight, 70 parts by weight, 71 parts by weight, 72 parts by weight, 73 parts by weight, 74 parts by weight, 75 parts by weight, 76 parts by weight, 77 parts by weight, 78 parts by weight, 89 parts by weight, 80 parts by weight, 81 parts by weight, 82 parts by weight, 83 parts by weight, 84 parts by weight, or 85 parts by weight, and all values in the range are not listed due to space limitation. The parts by weight of the nano-silica acrylate composite emulsion may be 20 parts by weight, 21 parts by weight, 22 parts by weight, 23 parts by weight, 24 parts by weight, 25 parts by weight, and all values within the ranges, which are not illustrated due to space limitations. The propylene glycol diacetate can be present in an amount of 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts by weight and all values within the stated ranges, which are not intended to be limiting due to space considerations. The ethylene glycol monobutyl ether may be 24 parts by weight, 25 parts by weight, 26 parts by weight, 27 parts by weight, 28 parts by weight, 29 parts by weight, 30 parts by weight, 31 parts by weight, 32 parts by weight, 33 parts by weight, 34 parts by weight, 35 parts by weight, 36 parts by weight, 37 parts by weight, and all values within the stated ranges, which are not enumerated herein due to space limitations. The weight parts of the polyvinyl alcohol may be 1.5 parts by weight, 1.6 parts by weight, 1.7 parts by weight, 1.8 parts by weight, 1.9 parts by weight, 2.0 parts by weight, 2.1 parts by weight, 2.2 parts by weight, 2.3 parts by weight, 2.4 parts by weight, 2.5 parts by weight, and all values within the ranges, which are not enumerated herein due to space limitations. The weight part of n-butanol may be 3 weight parts, 3.1 weight parts, 3.2 weight parts, 3.3 weight parts, 3.4 weight parts, 3.5 weight parts, 3.6 weight parts, 3.7 weight parts, 3.8 weight parts, 3.9 weight parts, 4.0 weight parts, 4.1 weight parts, 4.2 weight parts, 4.3 weight parts, 4.4 weight parts, 4.5 weight parts, 4.6 weight parts, 4.7 weight parts, 4.8 weight parts, 4.9 weight parts, 5.0 weight parts and all values within the range, which are not enumerated due to space limitation. The weight parts of the polysiloxane may be 0.08 parts by weight, 0.09 parts by weight, 0.10 parts by weight, 0.11 parts by weight, 0.12 parts by weight, 0.13 parts by weight, 0.14 parts by weight, and all values within the stated ranges, which are not listed again for reasons of space limitation. The weight parts of the nonionic polyurethane thickener can be 0.3 parts by weight, 0.4 parts by weight, 0.5 parts by weight, 0.6 parts by weight, 0.7 parts by weight, 0.8 parts by weight, and all values within the stated ranges, which are not listed again for reasons of space limitation. The weight part of the alcohol-based nonionic surfactant may be 0.4 parts by weight, 0.5 parts by weight, 0.6 parts by weight, 0.7 parts by weight, 0.8 parts by weight, 0.9 parts by weight, 1.0 parts by weight, and all values within the range, which are not listed due to space limitation. The weight parts of the deionized water may be 50 parts by weight, 51 parts by weight, 52 parts by weight, 53 parts by weight, 54 parts by weight, 55 parts by weight, 56 parts by weight, 57 parts by weight, 58 parts by weight, 59 parts by weight, 60 parts by weight, and all values within the ranges, which will not be enumerated herein due to space limitations.
Preferably, the molecular weight of the aqueous acrylic acid is 5 × 105-5×106For example, it may be 5 × 105、6×105、7×105、8×105、9×105、1.0×106、2.0×106、3.0×106、4.0×106、5.0×106And all values within the range recited, are not to be construed as limiting due to space limitations.
Preferably, the polyvinyl alcohol has a degree of alcoholysis of from 85 to 89, and can be, for example, 85, 85.5, 86, 86.5, 87, 87.5, 88, 88.5, 89 and all values within the stated ranges, which are not to be considered due to space limitations.
Preferably, the environment-friendly coating further comprises a defoaming agent;
preferably, the defoamer is an ester defoamer.
Preferably, the environment-friendly coating further comprises a dispersant;
preferably, the dispersant is sodium polycarboxylate and/or sodium polyacrylate.
As a preferred technical scheme, the environment-friendly coating at least comprises the following components in parts by weight:
water-based acrylic acid: 65-85 parts by weight
Nano silicon dioxide acrylate composite emulsion: 20-25 parts by weight
Propylene glycol diacetate: 15-25 parts by weight
Ethylene glycol butyl ether: 24-37 parts by weight
Polyvinyl alcohol: 1.5-2.5 parts by weight
N-butanol: 3 to 5 parts by weight of
Polysiloxane: 0.08-0.14 weight part
Nonionic polyurethane thickener: 0.3 to 0.8 part by weight
Alcohol nonionic surfactant: 0.4 to 1 weight portion
Deionized water: 50-60 parts by weight;
ester defoaming agent: 0.5 to 1 part by weight
Sodium polycarboxylate and/or sodium polyacrylate: 1-5 parts by weight;
the environment-friendly coating also comprises isocyanate, wherein the weight part of the isocyanate is 15-25% of that of hydroxyl in the polyvinyl alcohol.
In a second aspect, the present invention provides a method for preparing the environmentally friendly coating according to the first aspect, which at least comprises the following steps:
1) adding aqueous acrylic acid into the reaction kettle, stirring for 10-20min (for example, 10min, 11min, 12min, 13min, 14min, 15min, 16min, 17min, 18min, 19min, 20min), and stirring at 100-200rpm (for example, 100rpm, 110rpm, 120rpm, 130rpm, 140rpm, 150rpm, 160rpm, 170rpm, 180rpm, 190rpm, 200 rpm);
2) adding polyvinyl alcohol, isocyanate, deionized water and nano-silica acrylate composite emulsion into the product obtained in the step 1) in sequence, stirring for 10-20min (for example, 10min, 11min, 12min, 13min, 14min, 15min, 16min, 17min, 18min, 19min, 20min), and stirring at 400-700rpm (400rpm, 450rpm, 500rpm, 550rpm, 600rpm, 650rpm, 700 rpm);
3) adding propylene glycol diacetate, ethylene glycol butyl ether, n-butanol, polysiloxane, nonionic polyurethane thickener and alcohol nonionic surfactant into the mixture obtained in step 2), stirring for 40-50min (for example, 40min, 41min, 42min, 43min, 44min, 45min, 46min, 47min, 48min, 49min), and stirring at 300-500rpm (for example, 300rpm, 320rpm, 340rpm, 360rpm, 380rpm, 400rpm, 420rpm, 440rpm, 460rpm, 480rpm, 500 rpm); filtering to obtain the environment-friendly coating.
Preferably, step 3) further comprises the step of adding an antifoaming agent and a dispersing agent to the mixture obtained in step 2).
In the preparation method, the molecular weight of the high polymer material polyvinyl alcohol can be obviously increased under the same viscosity by adding three batches of materials, and the density of curing crosslinking is improved, so that a large number of stable chemical bonds are formed, and the effect of stable performance is achieved. Fully dissolving a matrix material, adding polyvinyl alcohol and isocyanate to enable the dissolved matrix material and the matrix material to form a cross-linked covalent regular arrangement structure, and filling gaps with the nano-silica acrylate composite emulsion to further improve the density; the material is added for three times to effectively coat free active groups, so that the stability of the coating is enhanced, the aging resistance and the stain resistance of the coating are improved, and the stable property of the coating is realized. Meanwhile, the residual free volatile organic compounds can be effectively reduced, the release of the free volatile organic compounds is reduced, and the environmental protection performance of the coating is improved.
In a third aspect, the present invention provides the use of the environmentally friendly coating of the first aspect in the field of interior finishing.
Compared with the prior art, the invention at least has the following beneficial effects:
the environment-friendly paint provided by the invention adopts water-based acrylic acid as a base material for film formation, mainly considers the good weather resistance of the paint, and is matched with an alcohol nonionic surfactant, a nonionic polyurethane thickener and other additives, so that the characteristics of wetting, leveling, defoaming, anti-sticking, thickening and the like of the paint are further improved, the adaptability of the paint is improved, and the paint can be applied to wider construction and use conditions. In addition, hydroxyl functional groups of the polyvinyl alcohol and the n-butyl alcohol can play a role in crosslinking with isocyanate (a high molecular chain of the polyvinyl alcohol has a large specific surface area, and the n-butyl alcohol also plays a role in assisting dissolution and film formation), and form a covalent bond with a matrix material, namely the waterborne acrylic acid, so that the coating is ensured to have a regular arrangement structure; the gaps of the arrangement structure are filled by the nano silicon dioxide acrylate composite emulsion. Because the deionized water is volatilized, the nano silicon dioxide acrylate composite emulsion can further fill gaps left by volatilization of water, and the compactness of the interior of the coating are improved, so that the washing resistance, the stain resistance, the aging resistance and the corrosion resistance of the coating are macroscopically improved.
Detailed Description
The present invention will be further described with reference to the following examples, which are not intended to limit the invention in any way.
Example 1
The specific formulation of this example is as follows:
water-based acrylic acid: 65 parts by weight
Nano silicon dioxide acrylate composite emulsion: 20 parts by weight of
Propylene glycol diacetate: 15 parts by weight of
Ethylene glycol butyl ether: 24 parts by weight
Polyvinyl alcohol: 1.5 parts by weight
N-butanol: 3 parts by weight of
Polysiloxane: 0.08 parts by weight
Nonionic polyurethane thickener: 0.3 part by weight
Alcohol nonionic surfactant: 0.4 part by weight
Deionized water: 50 parts by weight;
ester defoaming agent: 0.5 part by weight
Sodium polycarboxylate: 1 part by weight;
the environment-friendly coating also comprises isocyanate, wherein the weight part of the isocyanate is 15% of that of hydroxyl in the polyvinyl alcohol.
The preparation method of the embodiment comprises the following specific steps:
1) adding the water-based acrylic acid into a reaction kettle, and stirring for 10min at the stirring speed of 100 rpm;
2) sequentially adding polyvinyl alcohol, isocyanate, deionized water and nano silicon dioxide acrylate composite emulsion into the product obtained in the step 1), stirring for 10min at the stirring speed of 400 rpm;
3) adding propylene glycol diacetate, ethylene glycol monobutyl ether, n-butyl alcohol, polysiloxane, a nonionic polyurethane thickener and an alcohol nonionic surfactant into the mixture obtained in the step 2), and stirring for 40 minutes at a stirring speed of 300 rpm; filtration gave the product of example 1.
Example 2
The specific formulation of this example is as follows:
water-based acrylic acid: 75 parts by weight of
Nano silicon dioxide acrylate composite emulsion: 23 parts by weight
Propylene glycol diacetate: 20 parts by weight of
Ethylene glycol butyl ether: 30 parts by weight of
Polyvinyl alcohol: 2.0 parts by weight
N-butanol: 4 parts by weight of
Polysiloxane: 0.11 part by weight
Nonionic polyurethane thickener: 0.55 part by weight
Alcohol nonionic surfactant: 0.7 parts by weight
Deionized water: 55 parts by weight;
ester defoaming agent: 0.75 part by weight
Sodium polyacrylate: 3 parts by weight;
the environment-friendly coating also comprises isocyanate, and the weight part of the isocyanate is 20% of that of hydroxyl in the polyvinyl alcohol.
The preparation method of the embodiment comprises the following specific steps:
1) adding the water-based acrylic acid into a reaction kettle, and stirring for 15min at the stirring speed of 150 rpm;
2) sequentially adding polyvinyl alcohol, isocyanate, deionized water and nano silicon dioxide acrylate composite emulsion into the product obtained in the step 1), stirring for 15min at a stirring speed of 550 rpm;
3) adding propylene glycol diacetate, ethylene glycol monobutyl ether, n-butyl alcohol, polysiloxane, a nonionic polyurethane thickener and an alcohol nonionic surfactant into the mixture obtained in the step 2), and stirring for 45min at the stirring speed of 400 rpm; filtration gave the product of example 2.
Example 3
The specific formulation of this example is as follows:
water-based acrylic acid: 85 parts by weight
Nano silicon dioxide acrylate composite emulsion: 25 parts by weight of
Propylene glycol diacetate: 25 parts by weight of
Ethylene glycol butyl ether: 37 parts by weight
Polyvinyl alcohol: 2.5 parts by weight
N-butanol: 5 parts by weight of
Polysiloxane: 0.14 part by weight
Nonionic polyurethane thickener: 0.8 part by weight
Alcohol nonionic surfactant: 1 part by weight
Deionized water: 60 parts by weight;
ester defoaming agent: 1 part by weight
Sodium polycarboxylate and sodium polyacrylate mixture: 5 parts by weight;
the environment-friendly coating also comprises isocyanate, and the weight part of the isocyanate is 25% of that of hydroxyl in the polyvinyl alcohol.
The preparation method of the embodiment comprises the following specific steps:
1) adding the water-based acrylic acid into a reaction kettle, and stirring for 20min at the stirring speed of 200 rpm;
2) sequentially adding polyvinyl alcohol, isocyanate, deionized water and nano silicon dioxide acrylate composite emulsion into the product obtained in the step 1), stirring for 20min at the stirring speed of 700 rpm;
3) adding propylene glycol diacetate, ethylene glycol monobutyl ether, n-butyl alcohol, polysiloxane, a nonionic polyurethane thickener and an alcohol nonionic surfactant into the mixture obtained in the step 2), and stirring for 50min at the stirring speed of 500 rpm; filtration gave the product of example 3.
Comparative example 1
The procedure was as in example 1 except that the amount of the nano-silica acrylate composite emulsion was 5 parts by weight.
Comparative example 2
The procedure of example 1 was repeated except that the nano-silica acrylate composite emulsion was replaced with a nano-silica composite emulsion.
Comparative example 3
The procedure was as in example 1 except that the polyvinyl alcohol was 0.5 part by weight.
Comparative example 4
The procedure was the same as in example 1 except that the polyvinyl alcohol was replaced with polyethylene glycol.
Comparative example 5
The procedure was as in example 1 except that the amount of n-butanol was 1 part by weight.
Comparative example 6
The procedure was the same as in example 1 except that n-butanol was replaced with ethanol.
Comparative example 7
The procedure was as in example 1 except that the isocyanate was omitted.
Comparative example 8
The procedure was the same as in example 1 except that the isocyanate was replaced with cyanate ester.
Comparative example 9
The procedure is as in example 1 except that the nonionic polyurethane thickener is omitted.
Comparative example 10
The procedure was the same as in example 1 except that the alcoholic nonionic surfactant was omitted.
Performance testing
The products prepared in examples 1-3 and comparative examples 1-10 were tested for properties using the following main instruments:
BGD 528 multifunctional scrub resistant instrument (Daggeda precision instruments (Guangzhou) Co., Ltd.), BGD 516/3 intelligent gloss instrument (Daggeda precision instruments (Guangzhou) Co., Ltd.); HS-3001A-S computer-based servo tensile tester (Shanghai and Sancheng instruments science and technology Co., Ltd.); SRA surface roughness tester (kluss scientific instruments (shanghai) ltd.), QUA uv accelerated weatherometer (Q-LAB, usa), and the like.
The test procedure for scrub resistance was carried out according to ISO 11998-. In order to ensure the scientificity of test data, each test adopts 3 sample plates to carry out parallel test, and the test data is the average value of the 3 sample plates.
The test procedure for stain resistance was carried out in accordance with GB/T9780-. To ensure the scientific nature of the test data, the arithmetic mean of the stain staining was taken over 3 test areas per test result (ensuring that the relative error of the replicates was ≦ 5%).
The experimental procedure for the resistance to artificial aging was carried out in accordance with GB/T1766-2008 "method for rating the aging of paints and varnishes), and the coatings obtained in the examples and comparative examples were treated by an artificial accelerated aging method for about 800 hours (equivalent to about 36 months of natural exposure in Beijing area), respectively rated for the light loss rating, discoloration rating, powdering rating, cracking rating, foaming rating, peeling rating, mold growth rating and mottle rating (S0-S5 rating: S0 rating is unchanged, i.e., the resistance to aging is the best, and S5 rating is changed the most severely, i.e., the resistance to aging is the worst).
The results of specific tests for scrub resistance and stain resistance are shown in table 1. In addition, the content of Volatile Organic Compounds (VOC) is also detected. As can be seen from Table 1, the overall results of the scrub and stain resistance of examples 1-3 are evident from comparative examples 1-10, which illustrate that the formulation and combination of ingredients in the present invention significantly improves the scrub and stain resistance. The analysis reason may be that the hydroxyl functional groups of the polyvinyl alcohol and the n-butyl alcohol can perform a crosslinking function with isocyanate (the high molecular chain of the polyvinyl alcohol has a large specific surface area, and the n-butyl alcohol also has a function of assisting dissolution to form a film), and form a covalent bond with the aqueous acrylic acid of the matrix material, so that the coating is ensured to have a regular arrangement structure; the gaps of the arrangement structure are filled by the nano silicon dioxide acrylate composite emulsion. Because the deionized water is volatilized, the nano silicon dioxide acrylate composite emulsion can further fill gaps left by volatilization of water, and the compactness and the density of the interior of the coating are improved, so that the strength of the coating is macroscopically improved, and the scrubbing resistance and the stain resistance of the coating are effectively improved; in addition, the coating disclosed by the invention has no volatile organic compound, is safe and environment-friendly to use and has no pollution.
TABLE 1
The results of the specific test for resistance to artificial aging are shown in table 2. We have rated 8 indicators of their resistance to artificial aging individually, and from Table 2 it is apparent that the resistance to artificial aging of examples 1-3 is generally due to comparative examples 1-10.
TABLE 2
| Light loss | Color change | Powdering | Cracking of | Foaming | Exfoliation | Mold growth | Speckle | |
| Example 1 | S1 | S2 | S2 | S1 | S1 | S2 | S1 | S1 |
| Example 2 | S1 | S2 | S2 | S1 | S1 | S2 | S1 | S1 |
| Example 3 | S1 | S2 | S2 | S1 | S1 | S2 | S1 | S1 |
| Comparative example 1 | S5 | S4 | S3 | S5 | S3 | S5 | S4 | S5 |
| Comparative example 2 | S5 | S4 | S1 | S5 | S3 | S5 | S5 | S2 |
| Comparative example 3 | S5 | S5 | S3 | S4 | S3 | S5 | S5 | S5 |
| Comparative example 4 | S5 | S5 | S3 | S5 | S4 | S5 | S5 | S5 |
| Comparative example 5 | S5 | S5 | S2 | S5 | S5 | S5 | S4 | S3 |
| Comparative example 6 | S4 | S5 | S3 | S5 | S3 | S5 | S4 | S4 |
| Comparative example 7 | S5 | S4 | S3 | S5 | S2 | S4 | S4 | S4 |
| Comparative example 8 | S5 | S4 | S3 | S5 | S2 | S5 | S4 | S3 |
| Comparative example 9 | S5 | S4 | S3 | S4 | S3 | S5 | S5 | S5 |
| Comparative example 10 | S4 | S5 | S1 | S5 | S3 | S5 | S3 | S4 |
The corrosion resistance test comprises the following basic steps: the prepared coating is sprayed on the surface of the galvanized iron with the surface treated by an air spraying method, the temperature is increased to 240 ℃ in a gradient manner, the drying treatment is carried out for 6 hours, and the coating is cooled to room temperature for testing. 3 replicates of each example or comparative example were set, all numbered and subjected to a soaking test using 10% strength sulfuric acid, according to the standard of GB/T9274-1988, determination of color paints and varnishes-liquid-resistant Medium, and the results show that the surfaces of the samples treated with the coating materials prepared in examples 1 to 3 were not significantly changed after 120 hours of soaking, the surfaces of the samples of comparative examples 1, 4 and 6 were heavily rusted, and the surfaces of the samples of the other comparative examples were slightly rusted, indicating that the eco-friendly coating material of the present invention has good corrosion resistance.
In conclusion, the environment-friendly coating provided by the invention adopts the water-based acrylic acid as a base material for film formation, the good weather resistance of the environment-friendly coating is mainly considered, and the environment-friendly coating is matched with the alcohol nonionic surfactant, the nonionic polyurethane thickener and other additives, so that the characteristics of wetting, leveling, defoaming, anti-sticking, thickening and the like are further improved, the adaptability of the environment-friendly coating is improved, and the environment-friendly coating can be applied to wider construction and use conditions. In addition, hydroxyl functional groups of the polyvinyl alcohol and the n-butyl alcohol can play a role in crosslinking with isocyanate (a high molecular chain of the polyvinyl alcohol has a large specific surface area, and the n-butyl alcohol also plays a role in assisting dissolution and film formation), and form a covalent bond with a matrix material, namely the waterborne acrylic acid, so that the coating is ensured to have a regular arrangement structure; the gaps of the arrangement structure are filled by the nano silicon dioxide acrylate composite emulsion. Because the deionized water is volatilized, the nano silicon dioxide acrylate composite emulsion can further fill gaps left by volatilization of water, and the compactness of the interior of the coating are improved, so that the washing resistance, the stain resistance, the aging resistance and the corrosion resistance of the coating are macroscopically improved.
It is to be noted and understood that various modifications and improvements can be made to the invention described in detail above without departing from the spirit and scope of the invention as claimed in the appended claims. Accordingly, the scope of the claimed subject matter is not limited by any of the specific exemplary teachings provided.
The applicants hereby give notice that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. The environment-friendly coating is characterized by at least comprising the following components in parts by weight:
water-based acrylic acid: 65-85 parts by weight
Nano silicon dioxide acrylate composite emulsion: 20-25 parts by weight
Propylene glycol diacetate: 15-25 parts by weight
Ethylene glycol butyl ether: 24-37 parts by weight
Polyvinyl alcohol: 1.5-2.5 parts by weight
N-butanol: 3 to 5 parts by weight of
Polysiloxane: 0.08-0.14 weight part
Nonionic polyurethane thickener: 0.3 to 0.8 part by weight
Alcohol nonionic surfactant: 0.4 to 1 weight portion
Deionized water: 50-60 parts by weight;
the environment-friendly coating also comprises isocyanate, wherein the weight part of the isocyanate is 15-25% of that of hydroxyl in the polyvinyl alcohol.
2. The environmental-friendly coating material according to claim 1, wherein the environmental-friendly coating material is characterized in thatIn that the molecular weight of the aqueous acrylic acid is 5X 105-5×106。
3. The environment-friendly paint according to claim 1 or 2, wherein the alcoholysis degree of the polyvinyl alcohol is 85-89.
4. The eco-friendly paint according to any one of claims 1 to 3, further comprising an antifoaming agent; preferably, the defoamer is an ester defoamer.
5. The eco-friendly paint according to any one of claims 1 to 4, further comprising a dispersant; preferably, the dispersant is sodium polycarboxylate and/or sodium polyacrylate.
6. The method for preparing environment-friendly paint according to any one of claims 1-5, characterized by comprising at least the following steps:
1) adding the water-based acrylic acid into a reaction kettle, and stirring for 10-20min at the stirring speed of 100-200 rpm;
2) sequentially adding polyvinyl alcohol, isocyanate, deionized water and nano silicon dioxide acrylate composite emulsion into the product obtained in the step 1), and stirring for 10-20min at the stirring speed of 400-700 rpm;
3) adding propylene glycol diacetate, ethylene glycol monobutyl ether, n-butyl alcohol, polysiloxane, nonionic polyurethane thickener and alcohol nonionic surfactant into the mixture obtained in the step 2), and stirring for 40-50min at the stirring speed of 300-500 rpm; filtering to obtain the environment-friendly coating.
7. The method according to claim 6, wherein the step 3) further comprises the step of adding an antifoaming agent and a dispersing agent to the mixture obtained in the step 2).
8. Use of the environmentally friendly coating according to any one of claims 1 to 5 in the field of interior decoration.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110184088A1 (en) * | 2010-01-27 | 2011-07-28 | Basf Se | Coating materials comprising composite particles |
| CN105061700A (en) * | 2015-08-14 | 2015-11-18 | 华南理工大学 | Nano-silica/polyacrylate organic and inorganic hybrid water-dispersible resin and preparation method thereof |
| CN105273556A (en) * | 2015-11-30 | 2016-01-27 | 桂林市和鑫防水装饰材料有限公司 | Preparation method of polyacrylate/nano silicon dioxide composite emulsion coating material |
| CN105331268A (en) * | 2015-11-20 | 2016-02-17 | 广州聚注专利研发有限公司 | Low-carbon waterborne coating and preparation method thereof |
| CN105482548A (en) * | 2015-12-28 | 2016-04-13 | 佛山市天元汇邦装饰材料有限公司 | Environment-friendly PVC (polyvinyl chloride) decorative film and preparation method thereof |
| CN108690476A (en) * | 2017-03-09 | 2018-10-23 | 盛世安泰建筑工程（北京）有限公司 | Acrylate paint and preparation method thereof |
-
2020
- 2020-12-29 CN CN202011592949.7A patent/CN112745707A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110184088A1 (en) * | 2010-01-27 | 2011-07-28 | Basf Se | Coating materials comprising composite particles |
| CN105061700A (en) * | 2015-08-14 | 2015-11-18 | 华南理工大学 | Nano-silica/polyacrylate organic and inorganic hybrid water-dispersible resin and preparation method thereof |
| CN105331268A (en) * | 2015-11-20 | 2016-02-17 | 广州聚注专利研发有限公司 | Low-carbon waterborne coating and preparation method thereof |
| CN105273556A (en) * | 2015-11-30 | 2016-01-27 | 桂林市和鑫防水装饰材料有限公司 | Preparation method of polyacrylate/nano silicon dioxide composite emulsion coating material |
| CN105482548A (en) * | 2015-12-28 | 2016-04-13 | 佛山市天元汇邦装饰材料有限公司 | Environment-friendly PVC (polyvinyl chloride) decorative film and preparation method thereof |
| CN108690476A (en) * | 2017-03-09 | 2018-10-23 | 盛世安泰建筑工程（北京）有限公司 | Acrylate paint and preparation method thereof |
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Application publication date: 20210504 |