CN107964291B - Diatom coating capable of degrading formaldehyde - Google Patents
Diatom coating capable of degrading formaldehyde Download PDFInfo
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- CN107964291B CN107964291B CN201711375552.0A CN201711375552A CN107964291B CN 107964291 B CN107964291 B CN 107964291B CN 201711375552 A CN201711375552 A CN 201711375552A CN 107964291 B CN107964291 B CN 107964291B
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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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Abstract
The invention relates to a diatom coating capable of degrading formaldehyde, which belongs to the technical field of home decoration coatings and aims to solve the technical problem that the existing diatom coating has low content of kieselguhr and cannot really and effectively adsorb and decompose formaldehyde, wherein the diatom coating comprises a component A and a component B which are independently packaged, the component A comprises, by weight, water, hydroxyethyl cellulose, ethylene glycol, an ND-1096 wetting agent, an RT8040 dispersing agent, a defoaming agent, L XE bactericide, titanium dioxide, light calcium, heavy calcium, talcum powder, nano titanium dioxide, nano zinc oxide, tourmaline powder, long white kieselguhr, kaolin and 5-20 parts of yellow clay, and the component B comprises 25K2 hydroxyethyl cellulose, RF-86 multifunctional auxiliary agent, NXZ defoaming agent, vanadium-doped modified titanium dioxide photocatalyst, nano zinc oxide, tourmaline powder, 1SF-18 styrene-acrylic emulsion, RT-1035 thickening agent, long white clay and water.
Description
Technical Field
The invention belongs to the technical field of home decoration coatings, and particularly relates to a diatom coating capable of degrading formaldehyde.
Background
Following "soot-type pollution" and "photochemical smog pollution", humans are experiencing third generation pollution- "indoor pollution". The main sources of indoor pollution are buildings and interior decoration materials, formaldehyde is a main pollutant released into the air by the building materials and the decoration materials, and the release time of the formaldehyde is 3-15 years. The national standard stipulates that the content of formaldehyde in indoor air is less than 0.08mg/m3. In 2005, CCTV-2 carried out the investigation of indoor environmental pollution situation of national city home decoration for the first time, and found that in 566 houses in 22 cities under investigation, the average house formaldehyde content was out of limits of 71%, with the highest pollution value appearing in Changzhou, being 1.26mg/m3The standard limit is exceeded by about 15 times, and the residential formaldehyde concentration of about 53.1% exceeds the standard limit by more than 1.5 times. Therefore, research and development have been made to enable adsorptionThe environment-friendly coating for degrading formaldehyde has very important significance and wide application prospect.
Diatomite is used as a non-renewable environment new material with ecological and environmental protection in the 21 st century, and can effectively adsorb harmful gases such as formaldehyde and the like due to the advantages of light weight, high porosity, large specific surface area, high chemical stability, strong adsorption capacity and the like, so that the diatomite becomes a new-generation environment-friendly and healthy material, is more and more paid attention by people, and has a wide development space in the future.
Disclosure of Invention
The invention aims to solve the technical problems that the existing diatom-containing paint has low content of diatomite and cannot really and effectively adsorb and decompose formaldehyde; a diatom coating capable of degrading formaldehyde is provided. The invention takes the diatomite as the main filler and adds the photocatalyst nano TiO2 and the nano ZnO to prepare the environment-friendly coating which can adsorb and degrade the formaldehyde and has very important significance and wide application prospect.
In order to solve the technical problem, the diatom coating capable of degrading formaldehyde consists of an A component and a B component which are independently packaged, and when the diatom coating is used, the A component and the B component are mixed according to the mass ratio of 1: 1;
200-400 parts of water, 1.0-4.0 parts of hydroxyethyl cellulose, 4-12 parts of ethylene glycol, 0.5-2 parts of ND-1096 wetting agent, 3-9 parts of RT8040 dispersing agent, 1-3 parts of defoaming agent, 1-4 parts of L XE bactericide, 5-15 parts of titanium dioxide, 100-200 parts of light calcium, 20-80 parts of heavy calcium, 10-40 parts of talcum powder, 5-20 parts of nano titanium dioxide, 1-5 parts of nano zinc oxide, 10-50 parts of 2000-mesh tourmaline powder, 30-100 parts of long white diatomite, 5-20 parts of kaolin and 5-20 parts of yellow clay;
the weight portion of the material is as follows: component B (paint mixing): 0.5-3 parts of 25K2 hydroxyethyl cellulose, 0.5-4 parts of RF-86 multifunctional auxiliary agent, 0.5-4 parts of NXZ defoaming agent, 5-25 parts of vanadium-doped modified titanium dioxide photocatalyst, 1-5 parts of nano zinc oxide, 15-50 parts of 2000-mesh tourmaline powder, 150-500 parts of SF-18 styrene-acrylic emulsion, 0.5-4 parts of RT-1035 thickening agent, 30-100 parts of long-white diatomite and 30-100 parts of water.
Preferably, the component A (pulping) comprises, by weight, 250-350 parts of water, 2.0-4.0 parts of hydroxyethyl cellulose, 3-10 parts of ethylene glycol, 0.5-1.5 parts of ND-1096 wetting agent, 6-8 parts of RT8040 dispersing agent, 1-2 parts of defoaming agent, 1-3 parts of L XE bactericide, 8-12 parts of titanium dioxide, 150-200 parts of light calcium, 40-60 parts of heavy calcium, 15-30 parts of talcum powder, 10-20 parts of nano titanium dioxide, 2-5 parts of nano zinc oxide, 20-40 parts of 2000-mesh tourmaline powder, 50-90 parts of long white diatomite, 10-20 parts of kaolin and 5-10 parts of yellow clay;
the weight portion of the material is as follows: component B (paint mixing): 1-3 parts of 25K2 hydroxyethyl cellulose, 1-3 parts of RF-86 multifunctional auxiliary agent, 1-4 parts of NXZ defoaming agent, 10-20 parts of vanadium-doped modified titanium dioxide photocatalyst, 2-4 parts of nano zinc oxide, 20-40 parts of 2000-mesh tourmaline powder, 2000-18 styrene-acrylic emulsion, 1-4 parts of RT-1035 thickening agent, 40-80 parts of long-white diatomite and 50-100 parts of water.
Most preferably, the component A (pulping) comprises, by weight, 300 parts of water, 3.0 parts of hydroxyethyl cellulose, 8 parts of ethylene glycol, 1 part of ND-1096 wetting agent, 7 parts of RT8040 dispersing agent, 2 parts of defoaming agent, 2 parts of L XE bactericide, 10 parts of titanium dioxide, 200 parts of light calcium, 50 parts of heavy calcium, 20 parts of talcum powder, 15 parts of nano titanium dioxide, 3 parts of nano zinc oxide, 30 parts of 2000-mesh tourmaline powder, 80 parts of long white diatomite, 15 parts of kaolin and 5 parts of yellow clay;
the weight portion of the material is as follows: component B (paint mixing): 2 parts of 25K2 hydroxyethyl cellulose, 2 parts of RF-86 multifunctional auxiliary agent, 3 parts of NXZ defoaming agent, 15 parts of vanadium-doped modified titanium dioxide photocatalyst, 3 parts of nano zinc oxide, 30 parts of 2000-mesh tourmaline powder, 300 parts of SF-18 styrene-acrylic emulsion, 3 parts of RT-1035 thickening agent, 50 parts of Changbai diatomite and 100 parts of water.
Further, the preparation method of the vanadium-doped modified titanium dioxide photocatalyst is carried out according to the following steps:
step a, dripping 5-15 ml of titanium source into 5-15 ml of absolute ethyl alcohol at the stirring speed of 100-150 revolutions per minute
Then, 0.5-2 ml of glacial acetic acid is dripped, and a titanium precursor solution is obtained after the dripping is finished;
b, dissolving ammonium metavanadate in an aqueous solution of ethanol, adding diluted hydrochloric acid to adjust the pH value to be less than 3, and preparing a doped ion solution with the ammonium metavanadate molar fraction of 0.05-0.5%, wherein the aqueous solution of the ethanol is formed by mixing 5-10 ml of absolute ethanol and 1-2 ml of deionized water;
c, stirring the doped ion solution obtained in the step b at 0-10 ℃, dropwise adding the titanium precursor solution obtained in the step a, placing after dropwise adding, drying, roasting at 600-650 ℃, and grinding; doping and modifying transition metal ions with vanadium, calcining at 600-650 ℃, and preparing TiO2The crystal grains are refined, the rutile phase transformation temperature is increased, the product is an anatase phase, and compared with the rutile phase, the visible light catalytic capability of the anatase phase is strong.
Further defined, the titanium source of step a is titanium isopropoxide, tetrabutyl titanate or titanium tetrachloride.
The diatom coating capable of degrading formaldehyde provided by the invention is prepared from the following components in parts by weight: adding the A, B components into a stirrer, and uniformly mixing at the rotating speed of 500-1500 r/min; the using method comprises the following steps: spraying or painting, etc.
The diatom coating capable of degrading formaldehyde, disclosed by the invention, has high content of diatomite and is prepared by adding photocatalyst nano TiO2And nano ZnO can effectively adsorb and decompose formaldehyde, and is a multifunctional environment-friendly coating.
The preparation method of the diatom coating capable of degrading formaldehyde is simple and is suitable for large-scale production.
Drawings
FIG. 1 is a formaldehyde adsorption curve for a formaldehyde-degrading diatom coating.
Detailed Description
The diatom coating capable of degrading formaldehyde comprises a component A and a component B which are independently packaged, wherein when the diatom coating is used, the component A and the component B are mixed according to the mass ratio of 1:1, and the component A (pulping) comprises, by weight, 300 parts of water, 3.0 parts of hydroxyethyl cellulose, 8 parts of ethylene glycol, 1 part of ND-1096 wetting agent, 7 parts of RT8040 dispersing agent, 2 parts of defoaming agent, 2 parts of L XE bactericide, 10 parts of titanium dioxide, 200 parts of light calcium, 50 parts of heavy calcium, 20 parts of talcum powder, 15 parts of nano titanium dioxide, 3 parts of nano zinc oxide, 30 parts of 2000-mesh tourmaline powder, 80 parts of long white diatomite, 15 parts of kaolin and 5 parts of yellow clay;
the weight portion of the material is as follows: component B (paint mixing): 2 parts of 25K2 hydroxyethyl cellulose, 2 parts of RF-86 multifunctional auxiliary agent, 3 parts of NXZ defoaming agent, 15 parts of vanadium-doped modified titanium dioxide photocatalyst, 3 parts of nano zinc oxide, 30 parts of 2000-mesh tourmaline powder, 300 parts of SF-18 styrene-acrylic emulsion, 3 parts of RT-1035 thickening agent, 50 parts of Changbai diatomite and 100 parts of water.
The preparation method of the vanadium-doped modified titanium dioxide photocatalyst is completed by the following steps:
step a, under the stirring condition of 120 r/min, dropwise adding 10ml of titanium isopropoxide into 15ml of absolute ethyl alcohol, dropwise adding 1ml of glacial acetic acid, and obtaining a titanium precursor solution after dropwise adding;
b, dissolving ammonium metavanadate in an aqueous solution of ethanol to obtain a solution with the mole fraction of the ammonium metavanadate being 0.2%, wherein the aqueous solution of the ethanol is formed by mixing 10ml of absolute ethanol and 1.75ml of deionized water, and adding diluted hydrochloric acid to adjust the pH value to be less than 2 to prepare a doped ion solution;
and c, magnetically stirring the doped ion solution obtained in the step b at the speed of 120 revolutions per minute at the temperature of 0 ℃, dropwise adding the titanium precursor solution obtained in the step a at the dropping speed of 4 drops per second, standing for 12 hours after dropwise adding, drying for 12 hours at the temperature of 60 ℃, roasting for 3 hours at the temperature of 650 ℃, and grinding by using an agate mortar.
A preparation method of diatom paint capable of degrading formaldehyde comprises the following steps:
and the component A (pulping process) is characterized in that a stirrer is started, 1.0-4.0 parts of hydroxyethyl cellulose, 4-12 parts of ethylene glycol, 0.5-2 parts of ND-1096 wetting agent, 3-9 parts of RT8040 dispersing agent, 1-3 parts of defoaming agent, 1-4 parts of L XE bactericide, 5-15 parts of titanium dioxide, 100 parts of light calcium, 20-80 parts of heavy calcium, 10-40 talcum powder, 5-20 parts of nano titanium dioxide, 1-5 parts of nano zinc oxide, 10-50 parts of 2000-mesh tourmaline powder, 30-100 parts of long white diatomite, 5-20 parts of kaolin and 5-20 parts of yellow clay are added into 200-400 parts of water in sequence at the rotating speed of 500-1500r/min, and the pulping is completed after the mixture is fully stirred for 20 min-1 h.
The component B paint mixing process comprises the following steps: starting a stirrer, sequentially adding 0.5-3 parts of 25K2 hydroxyethyl cellulose, 0.5-4 parts of RF-86 multifunctional auxiliary agent, 0.5-4 parts of NXZ defoaming agent, 5-25 parts of nano titanium dioxide, 1-5 parts of nano zinc oxide, 15-50 parts of 2000-mesh tourmaline powder, 500 parts of 150-ion SF-18 styrene-acrylic emulsion, 0.5-4 parts of RT-1035 thickening agent and 30-100 parts of long-white diatomite into 30-100 parts of water at the rotating speed of 1500r/min, and fully stirring for 20 min-1 h to finish paint mixing.
Finally, the A, B components are added into a stirrer and evenly mixed at the rotating speed of 500-1500r/min, and finally the diatom coating capable of degrading formaldehyde is obtained.
Test and conclusion of validation
Uniformly coating the prepared diatom coating capable of degrading formaldehyde on a glass plate with the thickness of 300mm × 300mm, fully drying at room temperature, putting the diatom coating into a formaldehyde environment simulation test box for formaldehyde adsorption and decomposition experiments, wherein the temperature of the box body is 20 ℃, the humidity is 30%, and the formaldehyde amount put into the box body is 100 microliters every time, the formaldehyde concentration value in the box body is collected every other minute by the test box, the formaldehyde adsorption curve of the diatom coating capable of degrading formaldehyde obtained by the experiments is shown in figure 1, and the figure shows that the formaldehyde concentration in the box body is rapidly increased to reach the concentration of 1.82mg/m3Then gradually decreases, which indicates that the formaldehyde adsorption rate of the diatomite exceeds the formaldehyde volatilization rate, but the formaldehyde concentration in the box body gradually increases after the diatomite is reduced to a certain degree, the analysis reason may be that the formaldehyde reagent continuously volatilizes, the formaldehyde concentration starts to decrease after the experiment is carried out for 450min, and when the experiment is carried out for 1200min, the formaldehyde reagent completely volatilizes, but the formaldehyde concentration in the box body decreases to 0.31mg/m3And with the progress of the experiment, the phenomenon of desorption does not occur, which shows that the diatom coating capable of degrading formaldehyde can effectively adsorb and decompose formaldehyde.
Claims (4)
1. The diatom coating capable of degrading formaldehyde is characterized by consisting of an A component and a B component which are independently packaged, and when the diatom coating is used, the A component and the B component are mixed according to the mass ratio of 1: 1;
the component A comprises, by weight, 200-400 parts of water, 1.0-4.0 parts of hydroxyethyl cellulose, 4-12 parts of ethylene glycol, 0.5-2 parts of an ND-1096 wetting agent, 3-9 parts of an RT8040 dispersing agent, 1-3 parts of a defoaming agent, 1-4 parts of an L XE bactericide, 5-15 parts of titanium dioxide, 100-200 parts of light calcium, 20-80 parts of heavy calcium, 10-40 parts of talcum powder, 5-20 parts of nano titanium dioxide, 1-5 parts of nano zinc oxide, 10-50 parts of 2000-mesh tourmaline powder, 30-100 parts of long white diatomite, 5-20 parts of kaolin and 5-20 parts of yellow clay;
the weight portion of the material is as follows: and B component: 0.5-3 parts of 25K2 hydroxyethyl cellulose, 0.5-4 parts of RF-86 multifunctional auxiliary agent, 0.5-4 parts of NXZ defoaming agent, 5-25 parts of vanadium-doped modified titanium dioxide photocatalyst, 1-5 parts of nano zinc oxide, 15-50 parts of 2000-mesh tourmaline powder, 150-500 parts of SF-18 styrene-acrylic emulsion, 0.5-4 parts of RT-1035 thickening agent, 30-100 parts of long-white diatomite and 30-100 parts of water;
the preparation method of the vanadium-doped modified titanium dioxide photocatalyst comprises the following steps:
step a, under the condition that the stirring speed is 100-150 revolutions per minute, 5-15 ml of a titanium source is dripped into 5-15 ml of absolute ethyl alcohol, 0.5-2 ml of glacial acetic acid is dripped, and titanium precursor liquid is obtained after dripping;
b, dissolving ammonium metavanadate in an aqueous solution of ethanol, adding diluted hydrochloric acid to adjust the pH value to be less than 3, and preparing a doped ion solution with the ammonium metavanadate molar fraction of 0.05-0.5%, wherein the aqueous solution of the ethanol is formed by mixing 5-10 ml of absolute ethanol and 1-2 ml of deionized water;
and c, stirring the doped ion solution obtained in the step b at 0-10 ℃, dropwise adding the titanium precursor solution obtained in the step a, placing after dropwise adding, drying, roasting at 600-650 ℃, and grinding.
2. The diatom coating capable of degrading formaldehyde of claim 1, wherein said diatom coating is characterized by
The component A comprises, by weight, 250-350 parts of water, 2.0-4.0 parts of hydroxyethyl cellulose, 3-10 parts of ethylene glycol, 0.5-1.5 parts of ND-1096 wetting agent, 6-8 parts of RT8040 dispersing agent, 1-2 parts of defoaming agent, 1-3 parts of L XE bactericide, 8-12 parts of titanium dioxide, 150-200 parts of light calcium, 40-60 parts of heavy calcium, 15-30 parts of talcum powder, 10-20 parts of nano titanium dioxide, 2-5 parts of nano zinc oxide, 20-40 parts of 2000-mesh tourmaline powder, 50-90 parts of long white diatomite, 10-20 parts of kaolin and 5-10 parts of yellow clay;
the weight portion of the material is as follows: and B component: 1-3 parts of 25K2 hydroxyethyl cellulose, 1-3 parts of RF-86 multifunctional auxiliary agent, 1-4 parts of NXZ defoaming agent, 10-20 parts of vanadium-doped modified titanium dioxide photocatalyst, 2-4 parts of nano zinc oxide, 20-40 parts of 2000-mesh tourmaline powder, 300-400 parts of SF-18 styrene-acrylic emulsion, 1-4 parts of RT-1035 thickening agent, 40-80 parts of long-white diatomite and 50-100 parts of water.
3. The diatom coating capable of degrading formaldehyde of claim 1, wherein said diatom coating is characterized by
The component A comprises, by weight, 300 parts of water, 3.0 parts of hydroxyethyl cellulose, 8 parts of ethylene glycol, 1 part of ND-1096 wetting agent, 7 parts of RT8040 dispersing agent, 2 parts of defoaming agent, 2 parts of L XE bactericide, 10 parts of titanium dioxide, 200 parts of light calcium, 50 parts of heavy calcium, 20 parts of talcum powder, 15 parts of nano titanium dioxide, 3 parts of nano zinc oxide, 30 parts of 2000-mesh tourmaline powder, 80 parts of long white diatomite, 15 parts of kaolin and 5 parts of yellow clay;
the weight portion of the material is as follows: and B component: 2 parts of 25K2 hydroxyethyl cellulose, 2 parts of RF-86 multifunctional auxiliary agent, 3 parts of NXZ defoaming agent, 15 parts of vanadium-doped modified titanium dioxide photocatalyst, 3 parts of nano zinc oxide, 30 parts of 2000-mesh tourmaline powder, 300 parts of SF-18 styrene-acrylic emulsion, 3 parts of RT-1035 thickening agent, 50 parts of Changbai diatomite and 100 parts of water.
4. The diatom coating capable of degrading formaldehyde according to any one of claims 1-3, wherein the titanium source in step a is titanium isopropoxide, tetrabutyl titanate or titanium tetrachloride.
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| CN113025084A (en) * | 2021-02-02 | 2021-06-25 | 安徽硅能环保科技股份有限公司 | Environment-friendly diatom water paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865337A (en) * | 2012-12-18 | 2014-06-18 | 李辉 | Emulsion paint capable of decomposing formaldehyde |
| CN105062237A (en) * | 2015-08-11 | 2015-11-18 | 苏志强 | Functional ecological paint with formaldehyde scavenging function and preparation method of paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865337A (en) * | 2012-12-18 | 2014-06-18 | 李辉 | Emulsion paint capable of decomposing formaldehyde |
| CN105062237A (en) * | 2015-08-11 | 2015-11-18 | 苏志强 | Functional ecological paint with formaldehyde scavenging function and preparation method of paint |
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