CN112812594A - Liquid antibacterial flame-retardant mildew-proof shell coating and preparation method thereof - Google Patents
Liquid antibacterial flame-retardant mildew-proof shell coating and preparation method thereof Download PDFInfo
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- CN112812594A CN112812594A CN202110090332.3A CN202110090332A CN112812594A CN 112812594 A CN112812594 A CN 112812594A CN 202110090332 A CN202110090332 A CN 202110090332A CN 112812594 A CN112812594 A CN 112812594A
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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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
- C09D5/18—Fireproof paints including high temperature resistant 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
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- Inorganic Chemistry (AREA)
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Abstract
The invention relates to a liquid antibacterial flame-retardant mildew-proof shell coating and a preparation method thereof, wherein the preparation method comprises the following steps: s1: preparing slurry: adding 20-35 parts by mass of distilled water into a stirrer, sequentially adding 3-5 parts by mass of hydroxyethyl cellulose, 0.3-1 part by mass of a wetting agent, 0.5-1 part by mass of a dispersing agent, 0.5-1.5 parts by mass of propylene glycol and 0.2-0.3 part by mass of a defoaming agent, and stirring for 30-40 minutes at 500 revolutions per minute to prepare slurry; s2: preparing a base material: sequentially adding 20-30 parts by mass of nano-silver, 5-10 parts by mass of titanium dioxide, 10-25 parts by mass of unmodified shell powder and 10-35 parts by mass of modified shell powder into the slurry prepared in the step S1, and stirring at 800-1200 rpm for 40-60 minutes to prepare a base material; s3: preparing a coating: 10-20 parts by mass of distilled water, 0.1-0.4 part by mass of defoaming agent, 0.3-0.5 part by mass of polyurethane thickener and 0.2-0.5 part by mass of rheological additive are sequentially added into the base material obtained in the step S2, and the mixture is stirred for 20-30 minutes at 600 revolutions per minute of 300 materials to prepare the coating. The coating disclosed by the invention has the following characteristics: absorbing formaldehyde, purifying air, eliminating peculiar smell, resisting and inhibiting bacteria, preventing static electricity, regulating unique water absorbing function of humidity, preventing fire and retarding fire and preventing light pollution.
Description
Technical Field
The invention relates to the field of coatings, in particular to a liquid antibacterial flame-retardant mildew-proof shell coating and a preparation method thereof.
Background
The shell is mainly prepared from shell powder, a powdery material obtained by cleaning, calcining, crushing and grinding the shell powder, and a main component of calcium carbonate, a small amount of amino acid and polysaccharide substances, and the shell powder is prepared into the interior wall decorative coating, so that the interior wall decorative coating not only can absorb formaldehyde and decompose harmful gases; the air humidity in the room is adjusted, and the functions of sterilization and bacteriostasis are achieved; the A-level flame-retardant and fireproof functions can be achieved; a beneficial microenvironment is formed indoors, which greatly helps the health of the human body. The paint not only can not volatilize harmful gases such as formaldehyde, benzene, ammonia gas, TVOC and the like, but also has the function of decomposing and adsorbing the harmful gases. The shell powder has a porous structure, so that the shell powder has a good water adsorption function, the wall surface does not dew under a high humidity state, and the moisture absorbed into the wall can be slowly released under the condition of indoor drying, so that the breathing function of the shell powder is an indoor humidity regulator to prevent dew formation and microorganism generation, and the shell powder is known as a 'breathing coating'.
However, the existing coating containing shell powder usually contains components such as emulsion, cosolvent and the like, and the problem of harm to the environment and the like caused by the components cannot be solved.
Disclosure of Invention
In order to solve the technical problems, the invention provides the liquid antibacterial flame-retardant mildew-proof shell coating which does not contain emulsion and cosolvent, has the natural characteristics of environmental protection, is not inferior in fireproof flame-retardant, sound absorption and noise reduction, air humidity adjustment, static prevention and antibacterial action and has better adsorption performance. The coating disclosed by the invention has the following characteristics: absorbing formaldehyde, purifying air, eliminating peculiar smell, resisting and inhibiting bacteria, preventing static electricity, regulating unique water absorbing function of humidity, preventing fire and retarding fire and preventing light pollution.
In a first aspect, the invention relates to a preparation method of a liquid antibacterial flame-retardant mildew-proof shell coating, which comprises the following steps:
s1: preparing slurry: adding 20-35 parts by mass of distilled water into a stirrer, sequentially adding 3-5 parts by mass of hydroxyethyl cellulose, 0.3-1 part by mass of a wetting agent, 0.5-1 part by mass of a dispersing agent, 0.5-1.5 parts by mass of propylene glycol and 0.2-0.3 part by mass of a defoaming agent, and stirring for 30-40 minutes at 500 revolutions per minute to prepare slurry;
s2: preparing a base material: sequentially adding 20-30 parts by mass of nano-silver, 5-10 parts by mass of titanium dioxide, 10-25 parts by mass of unmodified shell powder and 10-35 parts by mass of modified shell powder into the slurry prepared in the step S1, and stirring at 800-1200 rpm for 40-60 minutes to prepare a base material;
s3: preparing a coating: 10-20 parts by mass of distilled water, 0.1-0.4 part by mass of defoaming agent, 0.3-0.5 part by mass of polyurethane thickener and 0.2-0.5 part by mass of rheological additive are sequentially added into the base material obtained in the step S2, and the mixture is stirred for 20-30 minutes at 600 revolutions per minute of 300 materials to prepare the coating.
In a preferred embodiment, the modified shell powder is prepared by the following method:
(1) cleaning shells, mechanically crushing, filtering by a 500-mesh filter screen, and drying to obtain shell powder;
(2) adding shell powder into a 2-4 wt% hydrochloric acid solution, activating for 3h with acid to obtain an acid-activated shell powder mixed solution, then thermally activating the mixed solution for 1h at 300-400 ℃, cleaning, drying and grinding into shell coarse powder; wherein the mass ratio of the shell powder to the hydrochloric acid solution is 1: 10;
(3) placing the shell coarse powder obtained in the step (2) in a muffle furnace for five-stage gradient calcination: (a) calcining at 350 deg.C for 30 min; (b) heating to 500 ℃ at the heating rate of 10 ℃/min, and carrying out heat preservation calcination at the temperature for 30 min; (c) heating to 800 ℃ at the heating rate of 8 ℃/min, and carrying out heat preservation calcination for 20 min at the temperature; (d) heating to 1000 ℃ at the heating rate of 8 ℃/min, and carrying out heat preservation and calcination for 10 min at the temperature; (e) heating to 1200 ℃ at the heating rate of 5 ℃/min, and carrying out heat preservation and calcination at the temperature for 20 min; after calcining and sintering, naturally cooling to room temperature, crushing, grinding, and sieving with a 200-mesh sieve to obtain calcined shell powder;
(4) adding the calcined shell powder obtained in the step (3) into distilled water to prepare 6 wt% slurry A;
(5) and (3) adding a titanate coupling agent into the slurry obtained in the step (4), wherein the mass ratio of the titanate coupling agent to the slurry A is 2:100, stirring for 2 hours at 65 ℃, drying at normal temperature, and grinding to obtain the modified shell powder.
In a preferred embodiment, the unmodified shell powder is prepared by the following method: mechanically pulverizing cleaned shell, adding water to obtain mortar-like substance, filtering with 200 mesh filter screen, and drying at 50 deg.C to obtain unmodified shell powder.
In a preferred embodiment, the weight ratio of the distilled water added in step S1 to the distilled water added in step S3 is (1.9-2.1): 1.
in a preferred embodiment, the components added in each step are as follows:
in step S1, 30 parts by mass of distilled water, 5 parts by mass of hydroxyethyl cellulose, 0.8 part by mass of a wetting agent, 0.7 part by mass of a dispersant, 1 part by mass of propylene glycol, and 0.2 part by mass of a defoaming agent;
in the step S2, 30 parts by mass of nano-silver, 10 parts by mass of titanium dioxide, 20 parts by mass of unmodified shell powder and 25 parts by mass of modified shell powder;
in step S3, 15 parts by mass of distilled water, 0.2 part by mass of a defoaming agent, 0.4 part by mass of a polyurethane thickener, and 0.2 part by mass of a rheological additive.
In a second aspect, the invention relates to a liquid antibacterial flame-retardant mildew-proof shell coating prepared by the method.
In a preferred embodiment, the coating is tested according to GB8624-2012 for a burning time TfIs 0 s; the mass loss rate Delta m is less than or equal to 15.9 percent; index of combustion growth rate FIGRA0.2MJLess than or equal to 43.7W/S; total heat release THR within 600s600sLess than or equal to 1.9 MJ; the smoke generation rate index SMOGRA is less than or equal to 1.0m2/s2(ii) a Total smoke yield TSP within 600s600s≤13.3m2(ii) a The drips/particles are burned within 600s for a duration not exceeding 10 s.
The liquid antibacterial flame-retardant mildew-proof shell coating prepared by the method can obtain excellent coating performance on the premise of not adding emulsion and cosolvent, has excellent environmental protection performance, does not release formaldehyde, has low VOC, and also has excellent flame-retardant and antibacterial properties.
Detailed Description
Examples of the present invention are described further below, wherein the examples are only the most preferred exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations of this invention will become apparent to those skilled in the art from the foregoing description and the following description of the embodiments without departing from the spirit and scope of this invention. Accordingly, the scope of the invention is intended to be limited only by the scope of the claims.
Example 1:
the preparation method of the liquid antibacterial flame-retardant mildew-proof shell coating comprises the following steps:
s1: preparing slurry: adding 30 parts by mass of distilled water into a stirrer, sequentially adding 5 parts by mass of hydroxyethyl cellulose, 0.8 part by mass of a wetting agent, 0.7 part by mass of a dispersing agent, 1 part by mass of propylene glycol and 0.2 part by mass of a defoaming agent, and stirring at 500 revolutions per minute for 30 minutes to prepare slurry;
s2: preparing a base material: adding 30 parts by mass of nano-silver, 10 parts by mass of titanium dioxide, 20 parts by mass of unmodified shell powder and 25 parts by mass of modified shell powder into the slurry prepared in the step S1 in sequence, and stirring for 60 minutes at 1000 revolutions per minute to prepare a base material;
s3: preparing a coating: 15 parts by mass of distilled water, 0.2 part by mass of a defoaming agent, 0.4 part by mass of a polyurethane thickener and 0.2 part by mass of a rheological additive are sequentially added to the base material prepared in the step S2, and the mixture is stirred at 400 revolutions per minute for 30 minutes to prepare the coating disclosed by the invention.
The modified shell powder is prepared by the following method:
(1) cleaning shells, mechanically crushing, filtering by a 500-mesh filter screen, and drying to obtain shell powder;
(2) adding shell powder into a 3 wt% hydrochloric acid solution, carrying out acid activation for 3h to obtain an acid-activated shell powder mixed solution, then carrying out heat activation on the mixed solution at 400 ℃ for 1h, cleaning, drying and grinding into shell coarse powder; wherein the mass ratio of the shell powder to the hydrochloric acid solution is 1: 10;
(3) placing the shell coarse powder obtained in the step (2) in a muffle furnace for five-stage gradient calcination: (a) calcining at 350 deg.C for 30 min; (b) heating to 500 ℃ at the heating rate of 10 ℃/min, and carrying out heat preservation calcination at the temperature for 30 min; (c) heating to 800 ℃ at the heating rate of 8 ℃/min, and carrying out heat preservation calcination for 20 min at the temperature; (d) heating to 1000 ℃ at the heating rate of 8 ℃/min, and carrying out heat preservation and calcination for 10 min at the temperature; (e) heating to 1200 ℃ at the heating rate of 5 ℃/min, and carrying out heat preservation and calcination at the temperature for 20 min; after calcining and sintering, naturally cooling to room temperature, crushing, grinding, and sieving with a 200-mesh sieve to obtain calcined shell powder;
(4) adding the calcined shell powder obtained in the step (3) into distilled water to prepare 6 wt% slurry A;
(5) and (3) adding a titanate coupling agent into the slurry obtained in the step (4), wherein the mass ratio of the titanate coupling agent to the slurry A is 2:100, stirring for 2 hours at 65 ℃, drying at normal temperature, and grinding to obtain the modified shell powder.
Wherein the unmodified shell powder is prepared by adopting the following method: mechanically pulverizing cleaned shell, adding water to obtain mortar-like substance, filtering with 200 mesh filter screen, and drying at 50 deg.C to obtain unmodified shell powder.
Example 2:
the coatings prepared in example 1 were tested as follows:
1. the overall performance of the coatings was tested according to GB/T9756-:
table 1: overall coating properties
2. The combustion performance is tested according to GB8624-2012, and reaches A level, which is shown in Table 2:
table 2: coating combustion performance
3. The antibacterial performance is tested according to GB/T21866-2008, and the antibacterial performance is specifically shown in Table 3:
table 3: antibacterial property of paint
4. The limit of harmful substances of the coating is tested according to GB 18582-:
table 4: limit of harmful substances in paint
Claims (7)
1. A preparation method of a liquid antibacterial flame-retardant mildew-proof shell coating is characterized by comprising the following steps: the method comprises the following steps:
s1: preparing slurry: adding 20-35 parts by mass of distilled water into a stirrer, sequentially adding 3-5 parts by mass of hydroxyethyl cellulose, 0.3-1 part by mass of a wetting agent, 0.5-1 part by mass of a dispersing agent, 0.5-1.5 parts by mass of propylene glycol and 0.2-0.3 part by mass of a defoaming agent, and stirring for 30-40 minutes at 500 revolutions per minute to prepare slurry;
s2: preparing a base material: sequentially adding 20-30 parts by mass of nano-silver, 5-10 parts by mass of titanium dioxide, 10-25 parts by mass of unmodified shell powder and 10-35 parts by mass of modified shell powder into the slurry prepared in the step S1, and stirring at 800-1200 rpm for 40-60 minutes to prepare a base material;
s3: preparing a coating: 10-20 parts by mass of distilled water, 0.1-0.4 part by mass of defoaming agent, 0.3-0.5 part by mass of polyurethane thickener and 0.2-0.5 part by mass of rheological additive are sequentially added into the base material obtained in the step S2, and the mixture is stirred for 20-30 minutes at 600 revolutions per minute of 300 materials to prepare the coating.
2. The method of claim 1, wherein: the modified shell powder is prepared by the following method:
(1) cleaning shells, mechanically crushing, filtering by a 500-mesh filter screen, and drying to obtain shell powder;
(2) adding shell powder into a 2-4 wt% hydrochloric acid solution, activating for 3h with acid to obtain an acid-activated shell powder mixed solution, then thermally activating the mixed solution for 1h at 300-400 ℃, cleaning, drying and grinding into shell coarse powder; wherein the mass ratio of the shell powder to the hydrochloric acid solution is 1: 10;
(3) placing the shell coarse powder obtained in the step (2) in a muffle furnace for five-stage gradient calcination: (a) calcining at 350 deg.C for 30 min; (b) heating to 500 ℃ at the heating rate of 10 ℃/min, and carrying out heat preservation calcination at the temperature for 30 min; (c) heating to 800 ℃ at the heating rate of 8 ℃/min, and carrying out heat preservation calcination for 20 min at the temperature; (d) heating to 1000 ℃ at the heating rate of 8 ℃/min, and carrying out heat preservation and calcination for 10 min at the temperature; (e) heating to 1200 ℃ at the heating rate of 5 ℃/min, and carrying out heat preservation and calcination at the temperature for 20 min; after calcining and sintering, naturally cooling to room temperature, crushing, grinding, and sieving with a 200-mesh sieve to obtain calcined shell powder;
(4) adding the calcined shell powder obtained in the step (3) into distilled water to prepare 6 wt% slurry A;
(5) and (3) adding a titanate coupling agent into the slurry obtained in the step (4), wherein the mass ratio of the titanate coupling agent to the slurry A is 2:100, stirring for 2 hours at 65 ℃, drying at normal temperature, and grinding to obtain the modified shell powder.
3. The method according to claim 1 or 2, characterized in that: the unmodified shell powder is prepared by the following method: mechanically pulverizing cleaned shell, adding water to obtain mortar-like substance, filtering with 200 mesh filter screen, and drying at 50 deg.C to obtain unmodified shell powder.
4. The method of claim 1, wherein: the weight ratio of the distilled water added in the step S1 to the distilled water added in the step S3 is (1.9-2.1): 1.
5. the method according to any one of claims 1 to 4, characterized in that: the components added in each step are as follows:
in step S1, 30 parts by mass of distilled water, 5 parts by mass of hydroxyethyl cellulose, 0.8 part by mass of a wetting agent, 0.7 part by mass of a dispersant, 1 part by mass of propylene glycol, and 0.2 part by mass of a defoaming agent;
in the step S2, 30 parts by mass of nano-silver, 10 parts by mass of titanium dioxide, 20 parts by mass of unmodified shell powder and 25 parts by mass of modified shell powder;
in step S3, 15 parts by mass of distilled water, 0.2 part by mass of a defoaming agent, 0.4 part by mass of a polyurethane thickener, and 0.2 part by mass of a rheological additive.
6. A liquid antibacterial flame-retardant mildew-proof shell coating is characterized in that: prepared by the process according to any one of claims 1 to 5.
7. The coating of claim 6, wherein: the coating is tested according to GB8624-2012 and has a burning time TfIs 0 s; the mass loss rate Delta m is less than or equal to 15.9 percent; index of combustion growth rate FIGRA0.2MJLess than or equal to 43.7W/S; total heat release THR within 600s600sLess than or equal to 1.9 MJ; the smoke generation rate index SMOGRA is less than or equal to 1.0m2/s2(ii) a Total smoke yield TSP within 600s600s≤13.3m2(ii) a The drips/particles are burned within 600s for a duration not exceeding 10 s.
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| CN202110090332.3A CN112812594A (en) | 2021-01-22 | 2021-01-22 | Liquid antibacterial flame-retardant mildew-proof shell coating and preparation method thereof |
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| CN202110090332.3A CN112812594A (en) | 2021-01-22 | 2021-01-22 | Liquid antibacterial flame-retardant mildew-proof shell coating and preparation method thereof |
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| CN109439032A (en) * | 2018-10-22 | 2019-03-08 | 国投兴业(北京)工程建筑有限公司 | Shell particles and preparation method thereof, coating with shell particles and preparation method thereof |
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2021
- 2021-01-22 CN CN202110090332.3A patent/CN112812594A/en active Pending
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| CN1475520A (en) * | 2002-08-15 | 2004-02-18 | 孙建宁 | Shell micro powder filler and its use |
| CN107867810A (en) * | 2016-09-26 | 2018-04-03 | 上海雁阵生物科技发展有限公司 | Purification of air, damping are self-cleaning, antibacterial health-care type oyster shell whiting biomass dry powder paint |
| CN107353716A (en) * | 2017-07-13 | 2017-11-17 | 福州安晟高索环保材料有限公司 | A kind of environment-friendly antibacterial interior wall coating containing oyster shell whiting and preparation method thereof |
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