CN108165098B - Formaldehyde-removing building dry powder coating - Google Patents
Formaldehyde-removing building dry powder coating Download PDFInfo
- Publication number
- CN108165098B CN108165098B CN201711268267.9A CN201711268267A CN108165098B CN 108165098 B CN108165098 B CN 108165098B CN 201711268267 A CN201711268267 A CN 201711268267A CN 108165098 B CN108165098 B CN 108165098B
- Authority
- CN
- China
- Prior art keywords
- activated carbon
- formaldehyde
- parts
- silver
- loaded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09D123/0853—Vinylacetate
-
- 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
- C08K2003/0806—Silver
-
- 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
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
The invention discloses a formaldehyde-removing building dry powder coating which comprises the following components in parts by weight: 10-50 parts of redispersible latex powder; 10-30 parts of titanium dioxide; 10-30 parts of calcium carbonate; 2-8 parts of calcined kaolin; 2-6 parts of talcum powder; 2-8 parts of activated carbon; 0.1-0.5 part of hydroxypropyl methyl cellulose. The formaldehyde-removing building dry powder coating disclosed by the invention is zero in VOC, healthy and environment-friendly, has no stimulation to skin and respiratory tract of people, can be immediately used after construction, and has an obvious effect on formaldehyde in air.
Description
Technical Field
The invention relates to a coating, in particular to a formaldehyde-removing building dry powder coating.
Background
The paint industry becomes an important part of national economy, and the paint yield and per capita yield become one of the important marks for measuring economic level of countries in the world. However, the paint industry itself has the property of polluting the environment. This has attracted a great deal of attention throughout society. Therefore, the development of environmentally friendly coatings is energetically becoming a general trend in the world's coatings development.
The main harm of formaldehyde is represented by stimulation to skin mucosa, and when the formaldehyde reaches a certain concentration indoors, people feel uncomfortable. Greater than 0.08m3The formaldehyde concentration can cause redness, itching, discomfort or pain in the throat, hoarseness, sneezing, chest distress, asthma, dermatitis, etc.
With the adoption of civil buildings with 10 hundred million square meters each year in China, the proportion of building energy consumption to total social energy consumption is increased from 10% in 1978 to 27.5% at present. The coating industry in China is rapidly developed, and the coating decoration becomes a necessary repair course for family decoration.
However, the existing decorative coating has high content of free monomers and free formaldehyde, and often causes cough, throat pain and intolerable smell after decoration, thereby causing serious harm to human respiratory tract.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a formaldehyde-removing building dry powder coating.
The invention is realized by adopting the following technical scheme:
a formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
10-50 parts of redispersible latex powder;
10-30 parts of titanium dioxide;
10-30 parts of calcium carbonate;
2-8 parts of calcined kaolin;
2-6 parts of talcum powder;
0.1-0.5 part of hydroxypropyl methyl cellulose.
The redispersible latex powder is at least one of ethylene-vinyl acetate copolymer, vinyl acetate-vinyl versatate copolymer, acrylate-styrene copolymer, styrene-butadiene copolymer, ethylene-vinyl chloride-vinyl laurate terpolymer, vinyl acetate-ethylene-vinyl versatate copolymer, vinyl acetate-acrylate-vinyl versatate copolymer, vinyl acetate-ethylene-acrylate copolymer and vinyl acetate-ethylene-methyl methacrylate copolymer.
The building dry powder coating formed by the invention has the greatest advantages of real zero VOC, green chemical industry, and saving a plurality of chemical additives such as an antifreezing agent, a film forming additive, a preservative and the like in the traditional latex coating, thereby saving a large amount of resources. The product obtained by the invention is solid powder, can be packaged by paper bags like cement, saves the packaging of the existing metal barrel or plastic barrel of liquid emulsion paint, is convenient for transportation and long-term storage, and does not deteriorate. The product obtained by the invention is convenient to construct and can be constructed by brush coating, roller coating or spraying.
Preferably, the first and second liquid crystal materials are,
a formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
10-50 parts of redispersible latex powder;
10-30 parts of titanium dioxide;
10-30 parts of calcium carbonate;
2-8 parts of calcined kaolin;
2-6 parts of talcum powder;
2-8 parts of activated carbon;
0.1-0.5 part of hydroxypropyl methyl cellulose.
Preferably, the activated carbon is coconut shell activated carbon or coal-based activated carbon; further preferably, the activated carbon is silver-loaded noraldehyde activated carbon.
Still further preferably, the silver-loaded noraldehyde activated carbon is prepared by the following method:
(1) acidifying: mixing activated carbon with solid weak acid, and drying to obtain acidified activated carbon;
the solid weak acid is citric acid or malic acid;
the drying temperature is 80-140 ℃, and the drying time is 4-8 hours;
the mass ratio of the activated carbon to the solid weak acid is 50: 1-100: 1;
the active carbon is coconut shell active carbon or coal-based active carbon;
(2) carrying out silver loading: mixing the acidified activated carbon, the silver-containing compound and the formaldehyde-removing metal compound, and drying to obtain silver-loaded activated carbon;
the silver-containing compound is at least one of silver sulfide, silver sulfate, silver nitrate, silver carbonate, silver phosphate, silver fluoride and tetrasilver tetroxide; preferably, the silver-containing compound is formed by mixing silver fluoride and tetrasilver tetroxide according to the mass ratio of 4:1-1: 4;
the formaldehyde-removing metal compound is at least one of anhydrous copper chloride, ferric trichloride, basic copper carbonate, manganese nitrate and cerium nitrate (CAS number: 10294-41-4); optimally, the formaldehyde-removing metal compound is formed by mixing ferric trichloride and cerium nitrate according to the mass ratio of 4:1-1: 4;
the mass ratio of the acidified active carbon to the silver-containing compound is 500: 1-10000: 1;
the mass ratio of the acidified active carbon to the formaldehyde-removing metal compound is 500: 1-2000: 1;
the drying temperature is 60-90 ℃, and the drying time is 1-5 hours;
(3) carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon;
controlling the negative pressure of carbonization at 50-100Pa, the temperature rising speed of carbonization at 6-12 ℃/min, and the final temperature of carbonization at 550 ℃ of 500-;
(4) and (3) activation: activating the carbonized activated carbon at the temperature of 850-900 ℃ by using water vapor to obtain the silver-loaded formaldehyde-removed activated carbon;
wherein the heating rate is 6-12 ℃/min, the water vapor pressure is 0.1-0.3MPa, the activation treatment is carried out for 5-25 minutes, and the temperature is cooled to 20-30 ℃.
The preparation method of the building dry powder coating comprises the following steps of accurately weighing various raw materials according to the using proportion of the building dry powder coating, putting the raw materials into a dry powder mixing machine for mixing for 20-40min, fully mixing the materials, weighing and packaging to obtain the product.
The formaldehyde-removing building dry powder coating disclosed by the invention is zero in VOC, healthy and environment-friendly, has no stimulation to skin and respiratory tract of people, can be immediately used after construction, and has an obvious effect on formaldehyde in air.
Detailed Description
In the examples, the redispersible latex powder was a copolymer latex powder of DA-1410 ethylene-vinyl acetate available from Taiwan chemical industry Co.
Example 1
A preparation method of silver-loaded formaldehyde-removing activated carbon comprises the following steps:
(1) acidifying: mixing coal-based activated carbon and citric acid, wherein the mass ratio of the activated carbon to the citric acid is 80:1, and drying at the temperature of 100 ℃ for 6 hours to obtain acidified activated carbon;
(2) carrying out silver loading: mixing the acidified activated carbon and tetrasilver tetroxide at a mass ratio of 2000:1, and drying at 80 ℃ for 3 hours to obtain silver-loaded activated carbon;
(3) carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon;
controlling the negative pressure of carbonization to be 80Pa, the temperature rising speed of carbonization to be 10 ℃/min, and the final temperature of carbonization to be 550 ℃;
(4) and (3) activation: and (3) activating the carbonized activated carbon by using water vapor, heating the carbonized activated carbon to 900 ℃ at a heating speed of 10 ℃/min under the water vapor pressure of 0.2MPa, keeping the temperature, activating for 15 minutes, and naturally cooling to 25 ℃ to obtain the silver-loaded formaldehyde-removing activated carbon.
Example 2
A preparation method of silver-loaded formaldehyde-removing activated carbon comprises the following steps:
(1) acidifying: mixing coal-based activated carbon and citric acid, wherein the mass ratio of the activated carbon to the citric acid is 80:1, and drying at the temperature of 100 ℃ for 6 hours to obtain acidified activated carbon;
(2) carrying out silver loading: mixing the acidified activated carbon with silver fluoride according to the mass ratio of 2000:1, and drying at the temperature of 80 ℃ for 3 hours to obtain silver-loaded activated carbon;
(3) carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon;
controlling the negative pressure of carbonization to be 80Pa, the temperature rising speed of carbonization to be 10 ℃/min, and the final temperature of carbonization to be 550 ℃;
(4) and (3) activation: and (3) activating the carbonized activated carbon by using water vapor, heating the carbonized activated carbon to 900 ℃ at a heating speed of 10 ℃/min under the water vapor pressure of 0.2MPa, keeping the temperature, activating for 15 minutes, and naturally cooling to 25 ℃ to obtain the silver-loaded formaldehyde-removing activated carbon.
Example 3
A preparation method of silver-loaded formaldehyde-removing activated carbon comprises the following steps:
(1) acidifying: mixing coal-based activated carbon and citric acid, wherein the mass ratio of the activated carbon to the citric acid is 80:1, and drying at the temperature of 100 ℃ for 6 hours to obtain acidified activated carbon;
(2) carrying out silver loading: mixing the acidified activated carbon with a silver-containing compound, wherein the mass ratio of the acidified activated carbon to the silver-containing compound is 2000:1, and drying at the temperature of 80 ℃ for 3 hours to obtain silver-loaded activated carbon; the silver-containing compound is formed by mixing silver fluoride and tetrasilver tetroxide according to the mass ratio of 1: 1.
(3) Carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon;
controlling the negative pressure of carbonization to be 80Pa, the temperature rising speed of carbonization to be 10 ℃/min, and the final temperature of carbonization to be 550 ℃;
(4) and (3) activation: and (3) activating the carbonized activated carbon by using water vapor, heating the carbonized activated carbon to 900 ℃ at a heating speed of 10 ℃/min under the water vapor pressure of 0.2MPa, keeping the temperature, activating for 15 minutes, and naturally cooling to 25 ℃ to obtain the silver-loaded formaldehyde-removing activated carbon.
Example 4
A preparation method of silver-loaded formaldehyde-removing activated carbon comprises the following steps:
(1) acidifying: mixing coal-based activated carbon and citric acid, wherein the mass ratio of the activated carbon to the citric acid is 80:1, and drying at the temperature of 100 ℃ for 6 hours to obtain the acidified activated carbon.
(2) Carrying out silver loading: mixing the acidified activated carbon, the silver-containing compound and the formaldehyde-removing metal compound, and drying at the temperature of 80 ℃ for 3 hours to obtain silver-loaded activated carbon;
the mass ratio of the acidified active carbon to the silver-containing compound is 2000:1,
the mass ratio of the acidified active carbon to the formaldehyde-removing metal compound is 1000:1,
the silver-containing compound is formed by mixing silver fluoride and tetrasilver tetroxide according to the mass ratio of 1: 1;
the metal compound for removing formaldehyde is formed by mixing ferric trichloride and cerium nitrate according to the mass ratio of 1: 1.
(3) Carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon;
controlling the negative pressure of carbonization to be 80Pa, the temperature rising speed of carbonization to be 10 ℃/min, and the final temperature of carbonization to be 550 ℃;
(4) and (3) activation: and (3) activating the carbonized activated carbon by using water vapor, heating the carbonized activated carbon to 900 ℃ at a heating speed of 10 ℃/min under the water vapor pressure of 0.2MPa, keeping the temperature, activating for 15 minutes, and naturally cooling to 25 ℃ to obtain the silver-loaded formaldehyde-removing activated carbon.
Example 5
A preparation method of silver-loaded formaldehyde-removing activated carbon comprises the following steps:
(1) acidifying: mixing coal-based activated carbon and citric acid, wherein the mass ratio of the activated carbon to the citric acid is 80:1, and drying at the temperature of 100 ℃ for 6 hours to obtain the acidified activated carbon.
(2) Carrying out silver loading: mixing the acidified activated carbon, the silver-containing compound and the formaldehyde-removing metal compound, and drying at the temperature of 80 ℃ for 3 hours to obtain silver-loaded activated carbon;
the mass ratio of the acidified active carbon to the silver-containing compound is 2000:1,
the mass ratio of the acidified active carbon to the formaldehyde-removing metal compound is 1000:1,
the silver-containing compound is formed by mixing silver fluoride and tetrasilver tetroxide according to the mass ratio of 1: 1;
the formaldehyde-removing metal compound is ferric trichloride.
(3) Carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon;
controlling the negative pressure of carbonization to be 80Pa, the temperature rising speed of carbonization to be 10 ℃/min, and the final temperature of carbonization to be 550 ℃;
(4) and (3) activation: and (3) activating the carbonized activated carbon by using water vapor, heating the carbonized activated carbon to 900 ℃ at a heating speed of 10 ℃/min under the water vapor pressure of 0.2MPa, keeping the temperature, activating for 15 minutes, and naturally cooling to 25 ℃ to obtain the silver-loaded formaldehyde-removing activated carbon.
Example 6
A preparation method of silver-loaded formaldehyde-removing activated carbon comprises the following steps:
(1) acidifying: mixing coal-based activated carbon and citric acid, wherein the mass ratio of the activated carbon to the citric acid is 80:1, and drying at the temperature of 100 ℃ for 6 hours to obtain the acidified activated carbon.
(2) Carrying out silver loading: mixing the acidified activated carbon, the silver-containing compound and the formaldehyde-removing metal compound, and drying at the temperature of 80 ℃ for 3 hours to obtain silver-loaded activated carbon;
the mass ratio of the acidified active carbon to the silver-containing compound is 2000:1,
the mass ratio of the acidified active carbon to the formaldehyde-removing metal compound is 1000:1,
the silver-containing compound is formed by mixing silver fluoride and tetrasilver tetroxide according to the mass ratio of 1: 1;
the metal compound for removing formaldehyde is cerous nitrate.
(3) Carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon;
controlling the negative pressure of carbonization to be 80Pa, the temperature rising speed of carbonization to be 10 ℃/min, and the final temperature of carbonization to be 550 ℃;
(4) and (3) activation: and (3) activating the carbonized activated carbon by using water vapor, heating the carbonized activated carbon to 900 ℃ at a heating speed of 10 ℃/min under the water vapor pressure of 0.2MPa, keeping the temperature, activating for 15 minutes, and naturally cooling to 25 ℃ to obtain the silver-loaded formaldehyde-removing activated carbon.
Test example 1
1g of the silver-loaded formaldehyde-removing activated carbon is placed in a 500mL closed space, and 0.50 μ g of formaldehyde is injected. And (3) standing for 24 hours, extracting gas in the closed space, introducing the gas into a mixed solution of acetylacetone and ammonium acetate, heating in a constant-temperature water bath at 60 ℃ for 15 minutes, and measuring the ultraviolet-visible spectrum after the solution changes color to obtain the absorbance of the sample. Then the residual formaldehyde content in the sample can be calculated according to a regression equation so as to obtain the content of the adsorbed formaldehyde, and the test method and the process are based on an acetylacetone spectrophotometry of GB/T15516-1995 air quality formaldehyde. The specific data are shown in Table 1.
Table 1: 24 hour formaldehyde adsorption scale
| Formaldehyde adsorption amount, μ g | |
| Example 1 | 0.26 |
| Example 2 | 0.25 |
| Example 3 | 0.31 |
| Example 4 | 0.43 |
| Example 5 | 0.35 |
| Example 6 | 0.36 |
| Coal-based activated carbon | 0.16 |
Example 7
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
5 parts of coal-based activated carbon;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
Example 8
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
5 parts of silver-loaded formaldehyde-removing activated carbon prepared in example 1;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
Example 9
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
5 parts of silver-loaded formaldehyde-removing activated carbon prepared in example 2;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
Example 10
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
5 parts of silver-loaded formaldehyde-removing activated carbon prepared in example 3;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
Example 11
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
5 parts of silver-loaded formaldehyde-removing activated carbon prepared in example 4;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
The formaldehyde-removing building dry powder coating disclosed by the invention is zero in VOC, healthy and environment-friendly, has no stimulation to skin and respiratory tract of people, can be immediately used after construction, and has an obvious effect on formaldehyde in air.
Example 12
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
5 parts of silver-loaded formaldehyde-removing activated carbon prepared in example 5;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
Example 13
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
5 parts of silver-loaded formaldehyde-removing activated carbon prepared in example 6;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
Example 14
The formaldehyde-removing building dry powder coating comprises the following components in parts by weight:
30 parts of redispersible latex powder;
20 parts of titanium dioxide;
20 parts of calcium carbonate;
5 parts of calcined kaolin;
4 parts of talcum powder;
0.3 part of hydroxypropyl methyl cellulose.
Accurately weighing various raw materials according to the dosage proportion of the formaldehyde-removing building dry powder coating, putting the raw materials into a dry powder mixer for mixing for 30min, fully mixing the materials, weighing and packaging to obtain the product.
Test example 2
According to JC/T1074-2008 'indoor air purification function coating material purification performance', the test conditions are temperature (20 +/-2) DEG C and relative temperature (50 +/-10)%. The results are shown in Table 2.
Table 2: coating formaldehyde test result table
| Efficiency of formaldehyde purification% | |
| Example 7 | 78.2 |
| Example 8 | 87.2 |
| Example 9 | 87.5 |
| Example 10 | 90.7 |
| Example 11 | 98.9 |
| Example 12 | 96.2 |
| Example 13 | 95.8 |
| Example 14 | 28.3 |
As can be seen from Table 2, the formaldehyde-removing building dry powder coating has an obvious formaldehyde removing effect.
Claims (2)
1. The formaldehyde-removing building dry powder coating is characterized by comprising the following components in parts by weight:
10-50 parts of redispersible latex powder;
10-30 parts of titanium dioxide;
10-30 parts of calcium carbonate;
2-8 parts of calcined kaolin;
2-6 parts of talcum powder;
2-8 parts of silver-loaded formaldehyde-removing activated carbon;
0.1-0.5 part of hydroxypropyl methyl cellulose;
the silver-loaded formaldehyde-removing activated carbon is prepared by adopting the following method:
(1) acidifying: mixing activated carbon with solid weak acid, and drying to obtain acidified activated carbon; the solid weak acid is citric acid or malic acid;
the drying temperature is 80-140 ℃, and the drying time is 4-8 hours;
the mass ratio of the activated carbon to the solid weak acid is 50: 1-100: 1;
the active carbon is coconut shell active carbon or coal-based active carbon;
(2) carrying out silver loading: mixing the acidified activated carbon, the silver-containing compound and the formaldehyde-removing metal compound, and drying to obtain silver-loaded activated carbon;
the silver-containing compound is formed by mixing silver fluoride and tetrasilver tetroxide according to the mass ratio of 4:1-1: 4;
the metal compound for removing formaldehyde is formed by mixing ferric trichloride and cerous nitrate according to the mass ratio of 4:1-1: 4;
the mass ratio of the acidified active carbon to the silver-containing compound is 500: 1-10000: 1;
the mass ratio of the acidified active carbon to the formaldehyde-removing metal compound is 500: 1-2000: 1;
the drying temperature is 60-90 ℃, and the drying time is 1-5 hours;
(3) carbonizing: carbonizing the silver-loaded activated carbon to obtain carbonized activated carbon; controlling the negative pressure of carbonization at 50-100Pa, the temperature rising speed of carbonization at 6-12 ℃/min, and the final temperature of carbonization at 550 ℃ of 500-;
(4) and (3) activation: activating the carbonized activated carbon at the temperature of 850-900 ℃ by using water vapor to obtain silver-loaded formaldehyde-removing activated carbon;
wherein the heating rate is 6-12 ℃/min, the water vapor pressure is 0.1-0.3MPa, the activation treatment is carried out for 5-25 minutes, and the temperature is cooled to 20-30 ℃.
2. The formaldehyde-removing building dry powder coating of claim 1, wherein the redispersible latex powder is at least one of ethylene-vinyl acetate copolymer, vinyl acetate-vinyl versatate copolymer, acrylate-styrene copolymer, styrene-butadiene copolymer, ethylene-vinyl chloride-vinyl laurate terpolymer, vinyl acetate-ethylene-vinyl versatate copolymer, vinyl acetate-acrylate-vinyl versatate copolymer, vinyl acetate-ethylene-acrylate copolymer, and vinyl acetate-ethylene-methyl methacrylate copolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268267.9A CN108165098B (en) | 2017-12-05 | 2017-12-05 | Formaldehyde-removing building dry powder coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268267.9A CN108165098B (en) | 2017-12-05 | 2017-12-05 | Formaldehyde-removing building dry powder coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108165098A CN108165098A (en) | 2018-06-15 |
| CN108165098B true CN108165098B (en) | 2020-11-03 |
Family
ID=62524367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711268267.9A Active CN108165098B (en) | 2017-12-05 | 2017-12-05 | Formaldehyde-removing building dry powder coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108165098B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105219272A (en) * | 2015-11-09 | 2016-01-06 | 北京康力千顺科技有限公司 | A kind of purifying formaldehyde type dry powder paint and preparation method thereof |
| CN105289606A (en) * | 2015-11-13 | 2016-02-03 | 山西新华化工有限责任公司 | Catalyst for removing indoor formaldehyde gas and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769053A (en) * | 2014-02-28 | 2014-05-07 | 东北林业大学 | Preparation method for activated carbon special for removal of low-concentration formaldehyde in room |
-
2017
- 2017-12-05 CN CN201711268267.9A patent/CN108165098B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105219272A (en) * | 2015-11-09 | 2016-01-06 | 北京康力千顺科技有限公司 | A kind of purifying formaldehyde type dry powder paint and preparation method thereof |
| CN105289606A (en) * | 2015-11-13 | 2016-02-03 | 山西新华化工有限责任公司 | Catalyst for removing indoor formaldehyde gas and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108165098A (en) | 2018-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108031435B (en) | Active carbon for removing formaldehyde and preparation method thereof | |
| CN112111211B (en) | Environment-friendly coating | |
| CN105148856A (en) | Air purification material capable of removing formaldehyde, acetaldehyde, acetic acid and ammonia and preparation method of air purification material | |
| CN107715921A (en) | A kind of indoor formaldehyde removes catalyst and preparation method thereof | |
| CN107502114B (en) | Interior wall water-based paint for formaldehyde adsorption and preparation method thereof | |
| CN108165098B (en) | Formaldehyde-removing building dry powder coating | |
| CN102850097B (en) | A kind of quick method for improving aerobic fermentation compost temperature | |
| CN103551115A (en) | Boric acid modified active carbon and preparation method thereof | |
| CN106833090A (en) | A kind of indoor Multifunctional diatom ooze powder of lacquer putty for use on and preparation method thereof | |
| CN103242726B (en) | Water-soluble environment-friendlyanticorrosive active carbon nanoparticles wall paint that mildew-resistant is fungi-proofing and preparation method thereof | |
| CN109467997A (en) | Type blue bricks wall covering modelled after an antique is built in a kind of light steel house spray | |
| CN106497016B (en) | A kind of preparation method of titania-based synthetic paper | |
| CN101011623A (en) | Formaldehyde removing agent composition | |
| CN108079947B (en) | Formaldehyde remover for furniture | |
| CN102382572B (en) | A kind of preparation technology of low-cost environmental-protecting interior wall coating | |
| CN110153168A (en) | A kind of renovation agent of heavy-metal contaminated soil and preparation method thereof | |
| CN106867457A (en) | A kind of compound dust suppressant and preparation method thereof | |
| CN107082499B (en) | Heavy metal wastewater treatment agent | |
| CN107793087B (en) | Clay sculpture material with enhanced viscosity and preparation method thereof | |
| CN108410219A (en) | A kind of shale diatom ooze dry powder paint and preparation method thereof | |
| CN107760175A (en) | A kind of fast alkyd resin water paint of rate of drying | |
| CN104401163B (en) | A kind of charcoal based on discarded bamboo wood carves the production method of product | |
| CN103265860B (en) | A kind of Water-soluble environment-friendlyanticorrosive active carbon nanoparticles wall paint and preparation method thereof | |
| CN108329778A (en) | A kind of production technology of diatom ooze, the compound indoor decorative paint of activated carbon | |
| CN107033700A (en) | A kind of furniture cleansing composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Chao Inventor after: Zhang Yifeng Inventor before: Zhang Yifeng |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201015 Address after: Room 274, building 22, 785 Hutai Road, Jing'an District, Shanghai, 200120 Applicant after: Shanghai Baoyuan Ecological Technology Co., Ltd Address before: 201202 Shanghai city Pudong New Area town Chuansha road 115 Lane 3 Po Hing Room 301 No. Applicant before: Zhang Yifeng |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |