CN116200068B - Water-based environment-friendly paint - Google Patents
Water-based environment-friendly paint Download PDFInfo
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- CN116200068B CN116200068B CN202310164136.5A CN202310164136A CN116200068B CN 116200068 B CN116200068 B CN 116200068B CN 202310164136 A CN202310164136 A CN 202310164136A CN 116200068 B CN116200068 B CN 116200068B
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- potassium permanganate
- water
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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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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 environment-friendly coating, which contains potassium permanganate impregnated alumina. The paint contains potassium permanganate impregnated alumina, and the potassium permanganate impregnated alumina has excellent and wide adsorption capacity, can effectively inhibit and adsorb the emitted VOC, so that the water-based paint can not only generate VOC and harmful substances, but also adsorb the VOC and the harmful substances in the environment, and has substantial help of environmental protection and health when applied to the conditions of closed environments such as indoor and in-car environments.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based environment-friendly coating.
Background
The paint is a continuous film which is coated on the surface of the protected or decorated object and can form firm adhesion with the coated object, and is usually a viscous liquid prepared by using resin, oil or emulsion as main materials, adding or not adding pigment and filler, adding corresponding auxiliary agents and using organic solvent or water.
Traditional paint is also called paint, contains volatile organic solvents, and with the increasing awareness of people on environmental protection and health, the release amount of organic solvents and harmful substances in the paint is limited in various countries. The water-based paint makes technological change to a certain extent on the current situation, the water-based paint takes water as a diluent, does not contain organic solvent, does not contain benzene, toluene, dimethylbenzene, formaldehyde and free TDI toxic heavy metals, and can meet the requirements of people on environmental protection and health.
In addition, many functional-enhancing coatings have been developed as water-based coatings are being studied. For example, chinese patent application No. 201410649322.9 discloses a water-based rust paint and a preparation method thereof, the paint is prepared from the following raw materials: styrene-acrylic emulsion, montmorillonite, a transforming agent, a transforming accelerator, a defoaming agent, a thickening agent, a freeze-thawing stabilizer, a dispersing agent, an adhesion promoter, pigment and water. The water-based paint with rust is nontoxic and environment-friendly, has excellent adhesive force, and has stronger compactness and enhanced corrosion resistance due to the addition of montmorillonite.
For another example, a Chinese patent application with application number 202010801641.2 discloses a water-based paint. The water-based paint comprises the following raw materials in parts by weight: 20-40 parts of acrylic emulsion; 2-8 parts of 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate; 0.2-0.6 part of graphene oxide; 3-8 parts of lotus leaf hydrophobizing agent; 40-80 parts of water. The water paint has excellent antifouling, waterproof and anticorrosive performance.
For another example, the Chinese patent application with the application number of 201710065708.9 discloses an anti-impact high-weather-resistance water-based industrial anti-corrosion coating and a preparation method thereof, wherein the anti-impact high-weather-resistance water-based industrial anti-corrosion coating adopts main resin polyurethane modified acrylate emulsion and auxiliary resin water-based polyurethane dispersoid to be compounded and cooperated; introducing nano silicon dioxide inorganic superfine material; through grading pigment filler and adding functional environment-friendly antirust pigment; novel substrate wetting and shrink prevention Kong Chuji and the like are introduced. The coating film of the anti-impact high-weather-resistance water-based industrial anti-corrosion coating has excellent impact resistance, weather resistance, corrosion resistance and chemical resistance, high hardness, strong adhesive force, good scratch resistance, health and environmental protection and convenient construction.
More research on water-based paints is focused on how to improve durability, such as stain resistance, cold resistance, heat resistance, alkali resistance, etc. But there is little research on the environmental protection performance of the water-based paint, especially how to improve the adsorption of organic solvents and harmful substances in the environment after the water-based paint forms a coating.
Disclosure of Invention
Aiming at the problem of how to improve the adsorption of organic solvents and harmful substances in the environment after the water-based paint forms a coating in the prior art, the inventor finds that the potassium permanganate impregnated alumina has excellent and wide adsorption capacity and can effectively inhibit and adsorb the emitted VOC in the related literature, and provides the following technical scheme:
the invention provides a water-based environment-friendly coating, which contains potassium permanganate impregnated alumina.
As an improvement of the technical scheme, the mass fraction of the potassium permanganate impregnated alumina accounting for the whole paint is not more than 1.6%.
As an improvement of the technical scheme, the paint contains potassium permanganate impregnated alumina and titanium dioxide.
As an improvement of the technical scheme, the potassium permanganate impregnated alumina and the titanium dioxide account for no more than 14.2% of the total mass fraction of the whole coating.
As improvement of the technical scheme, the mass ratio of the potassium permanganate impregnated alumina to the titanium dioxide is 1:1.
as an improvement of the technical scheme, the coating contains a composite material of potassium permanganate impregnated alumina and titanium dioxide, wherein the composite material of the potassium permanganate impregnated alumina and the titanium dioxide accounts for no more than 16.6% of the total mass fraction of the whole coating.
As an improvement of the technical scheme, the preparation method of the potassium permanganate impregnated aluminum oxide and titanium dioxide composite material comprises the following steps:
1) Immersing activated alumina in a potassium permanganate solution to obtain a potassium permanganate-loaded alumina wet material;
2) Dissolving ethyl orthosilicate in an ethanol solution, and then sequentially adding ammonia water and alumina wet materials loaded with potassium permanganate into the ethanol solution of the ethyl orthosilicate;
3) Adding titanium dioxide, treating for more than 12 hours under ultrasonic condition, centrifuging, washing and drying.
As an improvement of the technical scheme, the ultrasonic condition is 40kHz, and the treatment time is 12-18 hours.
The beneficial effects of the invention are as follows: the paint contains potassium permanganate impregnated alumina, and the potassium permanganate impregnated alumina has excellent and wide adsorption capacity, can effectively inhibit and adsorb the emitted VOC, so that the water-based paint can not only generate VOC and harmful substances, but also adsorb the VOC and the harmful substances in the environment, and has substantial help of environmental protection and health when applied to the conditions of closed environments such as indoor and in-car environments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
The water-based environment-friendly paint comprises the following basic components: acrylate emulsion, defoamer, leveling agent, film forming auxiliary agent and deionized water, wherein the proportion states of the components according to the mass ratio are shown in table 1:
TABLE 1
In the table, the acrylate emulsion, the defoamer, the leveling agent, the film-forming auxiliary agent and the deionized water are relatively common proportion assembly modes in the industry, and each component can be finely adjusted according to specific conditions in actual use, but the performance of the coating is not obviously affected.
Based on this, the inventors set standard components for better comparative study, and the proportional relationship of the components is: 30 parts of acrylate emulsion, 0.3 part of defoamer, 0.2 part of flatting agent, 5 parts of film forming auxiliary agent and 25 parts of deionized water.
Based on the standard components, the inventor adds potassium permanganate impregnated alumina, wherein the static adsorption capacity of the potassium permanganate can be determined according to the requirement, 20% of the static adsorption capacity is adopted in each embodiment of the invention, and the particle diameter of the potassium permanganate impregnated alumina is 200-400 mu m and is verified by embodiments 1-8.
Examples 1 to 8
The amounts of the components added in this set of examples are shown in Table 2.
TABLE 2
The water-based environment-friendly paint is obtained by uniformly mixing the components.
The aqueous environmental protection paint prepared in the above example was subjected to spray coating test, and the results are shown in table 3.
TABLE 3 Table 3
From the test results of examples 1 to 8 described above, it was found that, when potassium permanganate impregnated alumina was added, there was little effect on the brushing properties, but as the amount of addition increased after potassium permanganate impregnated alumina, there was an effect on the appearance color of the coating formed, which was probably related to the dark appearance exhibited by potassium permanganate impregnated alumina.
The results of the tests performed using the "JCT 2188-2013 purification performance of indoor air purification adsorbent" standard are shown in Table 4.
TABLE 4 Table 4
From table 3, it was found that the excellent adsorption performance of the potassium permanganate-impregnated alumina itself also plays a role in the paint, and the adsorption effect on formaldehyde is more remarkable as the addition amount of the potassium permanganate-impregnated alumina increases.
In combination with examples 1 to 8, it was found that in order to make the aqueous environmental protection paint have a sufficiently strong adsorptivity for harmful substances or TVOC, as much potassium permanganate impregnated alumina as possible can be added to the aqueous environmental protection paint, but the color development of the potassium permanganate impregnated alumina itself affects the natural color of the aqueous environmental protection paint.
The inventor knows that titanium dioxide has high whiteness as an auxiliary agent commonly used in industry, and the covering power is commonly increased in the paint. The inventors designed experiments 9-16 to explore the effect of titanium dioxide on the decolorization of potassium permanganate impregnated alumina.
The amounts of the components added in this set of examples are shown in Table 5.
TABLE 5
The aqueous environmental protection paint prepared in the above example was subjected to spray coating test, and the results are shown in table 6.
TABLE 6
From the test results of examples 9 to 16, it can be seen that when a small amount of potassium permanganate impregnated alumina and an equal amount of titanium dioxide are added, the problem of coating color difference caused by the addition of potassium permanganate impregnated alumina can be improved, but when the addition amount of potassium permanganate impregnated alumina is increased, the improvement effect of titanium dioxide on the problem of coating color difference caused by the addition of potassium permanganate impregnated alumina is not greatly helped, and more importantly, the titanium dioxide has no good stability in an aqueous system and also causes the stability of the aqueous environment-friendly paint to be poor.
The inventors carried out comparative examples 13 to 16 by adding a dispersant to a coating system, and the addition amounts of the components in this group of examples are shown in Table 7.
TABLE 7
The aqueous environmental protection paint prepared in the above example was subjected to spray coating test, and the results are shown in table 8.
TABLE 8
It is clear that although the addition of the dispersant can help solve the problem of paint stability, little improvement is achieved in the problem of coating color difference due to the impregnation of alumina with potassium permanganate.
Examples 17 to 21
The method is used for preparing the composite material of the potassium permanganate impregnated alumina and the titanium dioxide, and comprises the following steps:
preparation of activated alumina:
1) Mixing ammonium oxalate, crystalline aluminum chloride and deionized water to prepare an aluminum oxide aqueous solution, wherein the concentration of the aluminum oxide aqueous solution is 1.5 mol.AlCl 3 The ammonium oxalate content in the aqueous solution of aluminum oxide is 0.5mol/L;
2) Continuously stirring and heating the aqueous solution of aluminum oxide, keeping the temperature at 60 ℃, and dropwise adding 3mol of NH into the solution 3 The pH value of the ammonia water solution/L to the system is 3.8;
3) Evaporating the solution obtained in step 2) at 70 ℃ to gradually precipitate a white solid, and drying the white solid at 100 ℃ for 8 hours to obtain white solid powder:
4) Decomposing the white solid powder obtained in the step 3) by heating at 240 ℃ for 5 hours, and removing NH4Cl and ammonium oxalate;
5) Roasting the powder obtained in the step 4) at 600 ℃ for 4 hours to obtain the active alumina gamma-Al 2O3.
Preparation of potassium permanganate impregnated alumina:
1) Weighing a proper amount of alumina and potassium permanganate raw materials; determining the component amount by using the static adsorption capacity of potassium permanganate as 20%, wherein the potassium permanganate can be properly exceeded;
2) Preparing a potassium permanganate solution, fully and uniformly mixing potassium permanganate and water in a water bath container at 80 ℃ to completely dissolve the potassium permanganate, wherein the mass ratio of the potassium permanganate to the water is 1:50;
3) Pouring the potassium permanganate solution into a container containing aluminum oxide, uniformly stirring in a water bath container at 80 ℃, and soaking for 5 hours;
4) And after the adsorption is saturated completely, standing the wet alumina until no liquid drips out, so as to obtain the alumina wet material loaded with potassium permanganate.
Preparing a composite material of potassium permanganate impregnated alumina and titanium dioxide:
1) Dissolving ethyl orthosilicate in an ethanol solution, and then sequentially adding ammonia water and alumina wet materials loaded with potassium permanganate into the ethanol solution of the ethyl orthosilicate;
the dosage of the tetraethoxysilane, the ethanol and the ammonia water is controlled in the range of (5-10 g): (500-600 ml): (200-400 ml), wherein the moisture content of the alumina wet material loaded with potassium permanganate is controlled to be 50%, and the mass ratio range of the alumina wet material to the tetraethoxysilane is controlled to be 6: (1-3).
2) Adding titanium dioxide, performing ultrasonic treatment for 12-18 h under the condition of 40kHz, and then centrifuging, washing and drying. The ultrasonic conditions are not limited to 40kHz, and the ultrasonic wave can reach the working frequency, such as 40-80 kHz.
The amounts of the components added in this set of examples are shown in Table 9.
TABLE 9
The amount of titanium dioxide in table 9 corresponds to 20% of the amount of potassium permanganate impregnated alumina.
The aqueous environmental protection paint prepared in the above example was subjected to spray coating test, and the results are shown in table 10.
Table 10
After the potassium permanganate impregnated alumina and the titanium dioxide are prepared into the composite material and added, the problem of coating stability can be solved to a large extent on the premise of not adding a dispersing agent, and meanwhile, the problem of coating color difference caused by adding the potassium permanganate impregnated alumina can be improved, so that the dosage of the potassium permanganate impregnated alumina can be increased to 10 parts, and for the embodiment 19, the inventor tries to solve the color difference problem by increasing the dosage of the titanium dioxide, but the effect is very little.
The paint of example 18 was tested by adopting the standard of JCT2188-2013 indoor air purification adsorption material purification performance, and the formaldehyde purification efficiency was reduced but could reach 51.5%.
The defoamer, leveling agent, film forming aid and dispersant in all the above examples are all commercially available in the art in a form that can be used in the production of waterborne coatings.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (4)
1. The water-based environment-friendly paint is characterized by comprising a potassium permanganate impregnated alumina and titanium dioxide composite material, wherein the total mass fraction of the potassium permanganate impregnated alumina and the titanium dioxide composite material in the paint is not more than 16.6%;
the preparation method of the potassium permanganate impregnated aluminum oxide and titanium dioxide composite material comprises the following steps:
1) Immersing activated alumina in a potassium permanganate solution to obtain a potassium permanganate-loaded alumina wet material;
2) Dissolving ethyl orthosilicate in an ethanol solution, and then sequentially adding ammonia water and alumina wet materials loaded with potassium permanganate into the ethanol solution of the ethyl orthosilicate;
3) Adding titanium dioxide, treating for more than 12 hours under ultrasonic condition, centrifuging, washing and drying.
2. The water-based environment-friendly paint according to claim 1, wherein the potassium permanganate impregnated alumina and titanium dioxide account for no more than 14.2% of the total mass fraction of the paint.
3. The water-based environment-friendly paint according to claim 2, wherein the mass ratio of the potassium permanganate impregnated alumina to the titanium pigment is 1:1.
4. the water-based environment-friendly paint according to claim 1, wherein the ultrasonic condition is 40kHz and the treatment time is 12-18 h.
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| CN202310164136.5A CN116200068B (en) | 2023-02-24 | 2023-02-24 | Water-based environment-friendly paint |
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| CN116200068B true CN116200068B (en) | 2023-10-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012111842A (en) * | 2010-11-24 | 2012-06-14 | Sakai Chem Ind Co Ltd | Titanium dioxide containing composite particle |
| CN105544295A (en) * | 2015-12-02 | 2016-05-04 | 湖北恒昊包装科技有限公司 | Paint for fruit and vegetable fresh-keeping thermal insulation paper box and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2752239A4 (en) * | 2011-08-31 | 2015-08-12 | Shanghai World Prospect Chemtech Co Ltd | Inorganic non-metal mineral composite material carrying titanium dioxide layer, and preparation process and use thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012111842A (en) * | 2010-11-24 | 2012-06-14 | Sakai Chem Ind Co Ltd | Titanium dioxide containing composite particle |
| CN105544295A (en) * | 2015-12-02 | 2016-05-04 | 湖北恒昊包装科技有限公司 | Paint for fruit and vegetable fresh-keeping thermal insulation paper box and preparation method thereof |
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