CN113061359A - Fireproof flame-retardant wall coating and preparation method and application thereof - Google Patents
Fireproof flame-retardant wall coating and preparation method and application thereof Download PDFInfo
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- CN113061359A CN113061359A CN202110328662.1A CN202110328662A CN113061359A CN 113061359 A CN113061359 A CN 113061359A CN 202110328662 A CN202110328662 A CN 202110328662A CN 113061359 A CN113061359 A CN 113061359A
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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
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
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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
- 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
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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
- C09D7/65—Additives macromolecular
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- Wood Science & Technology (AREA)
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Abstract
The invention relates to the field of flame-retardant materials, in particular to a fireproof flame-retardant wall paint and a preparation method and application thereof, wherein the fireproof flame-retardant wall paint comprises the following raw materials in parts by weight: 25-38 parts of a cementing material; 14-30 parts of calcium bicarbonate; 8-15 parts of hydrotalcite powder; 3-6 parts of sericite powder; 12-25 parts of nano clay; 10-17 parts of hydroxypropyl methyl cellulose ether; 1.8-3.5 parts of beet pulp; 1.5-2 parts of a film forming agent. The fireproof flame-retardant wall coating disclosed by the invention can release carbon dioxide to form an oxygen blocking layer, can release a large amount of water molecules to reduce the combustion temperature, and achieves the purpose of effective flame retardance by the cooperation of the carbon dioxide and the water molecules.
Description
Technical Field
The invention relates to the field of flame-retardant materials, in particular to a fireproof flame-retardant wall paint and a preparation method and application thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The fireproof coating is also called as a flame-retardant coating, and the coating is coated on the wall surface of a building, particularly the wall surface of the building provided with oil combustible materials, so that the fireproof capacity of the wall body can be improved, the spread and propagation speed of flame can be slowed down, the purpose of preventing combustion within a certain time is realized, the development of fire behavior can be controlled, and the time for people to extinguish fire is saved.
At present, some flame retardant materials decompose non-combustible inert gas by heating when meeting fire, so that the decomposed combustible gas of combustible materials and oxygen in air are diluted to inhibit combustion, but the flame retardant effect of the mode is limited, one reason of the limited non-combustible inert gas decomposed from the flame retardant materials is that the flame retardant gradually loses effect under the condition that the combustible materials are continuously combusted, and therefore, the flame retardant performance of the flame retardant is required to be further improved.
Disclosure of Invention
Aiming at the problems, the invention aims to provide the fireproof flame-retardant wall paint and the preparation method and application thereof. In order to achieve the above object, the technical solution of the present invention is specifically as follows:
in a first aspect of the invention, the invention discloses a fireproof flame-retardant wall paint which comprises the following raw materials in parts by weight:
further, the fireproof flame-retardant wall paint also comprises water, and the water-cement ratio is 1: 0.54-0.6, and the coating is mixed with solid components in the coating to form slurry so as to be convenient for coating the coating on the wall surface of a building.
Further, the fireproof flame-retardant wall paint also comprises 4-12 parts by weight of a smoke suppressant. Optionally, the smoke suppressant comprises: at least one of magnesium hydroxide, aluminum hydroxide, zinc borate, molybdenum trioxide, ammonium molybdate and the like, and the smoke suppressant can effectively reduce the generation of smoke during combustion.
Further, the fireproof flame-retardant wall paint also comprises 2-5 parts by weight of a flame-retardant synergist, and optionally the flame-retardant synergist comprises: any one of antimony trioxide, polytetrafluoroethylene, iron phosphate and the like, and the flame retardant synergist is beneficial to improving the flame retardant efficiency of the coating.
Further, the cementitious material comprises: portland cement, sulphoaluminate cement, and the like. The cementing material has the main function of increasing the bonding capacity of the coating, is convenient to combine with the wall surface of a building, and prevents the coating from falling off from the wall surface after a long time.
Further, the beet pulp is mainly composed of molasses and crude fiber. The beet pulp mainly solves the problem that the cementing material is easy to agglomerate in the process of preparing the coating powder.
Further, the film forming agent comprises: at least one of water glass, silica sol, phosphate and the like, and the film forming agent can improve the film forming ultraviolet of the coating, has the characteristics of incombustibility, no smoke, no toxicity and the like, and improves the flame retardant property of the coating.
In a second aspect of the present invention, a preparation method of the fireproof flame-retardant wall coating is disclosed, which comprises:
(1) and mixing the cementing material, calcium bicarbonate, sericite powder, beet pulp and nano clay, and then grinding to obtain first mixed powder. In the step, the sericite powder is added, so that the agglomeration problem of the cementing material can be effectively prevented, and the dispersibility among the components is improved.
(2) And mixing the first mixed powder with the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the film forming agent, stirring, and uniformly stirring to obtain second powder. The reason why the hydrotalcite powder is added after the grinding in the step (1) is finished is that: heat is easily generated in the grinding process, and the layered structure of the hydrotalcite is easily damaged under the condition, so that the hydrotalcite has the flame retardant effect.
(3) And mixing the second powder with water to prepare slurry. The hydroxypropyl methyl cellulose ether and the nano clay have the characteristics of good water absorption and water storage, and the important guarantee that the coating has good flame retardant property is provided.
Further, the method also comprises the step of adding a smoke suppressant and/or a flame retardant synergist in the step (1). The smoke suppressant and the flame retardant synergist can also be added in batches, namely, a part of smoke suppressant and/or flame retardant synergist is added after a certain time, which is beneficial to improving the dispersibility of the smoke suppressant and/or flame retardant synergist.
Further, in the step (1), the grinding time is 20-35 min, and the grinding process is beneficial to increasing the fineness of each solid component, so that each component can be uniformly mixed, and the uniformity of the performance of the coating can be improved.
Further, in the step (2), the stirring time is 15-25 min, and the first mixed powder, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the film forming agent can be uniformly mixed together by stirring.
In a third aspect of the invention, the application of the fireproof and flame-retardant wall coating in the field of building engineering is disclosed, so as to improve the fireproof performance of buildings.
Compared with the prior art, the invention has the following beneficial effects:
(1) the hydroxypropyl methyl cellulose ether and the nano clay adopted by the invention can absorb a large amount of free water to enter the interior of the molecular structure after being mixed with water, the water can be still stored even if the coating is coated on a wall surface and dried, and in addition, the hydroxypropyl methyl cellulose ether and the nano clay can also absorb and supplement water molecules lost in the interior of the coating when the air humidity is high or the coating is rainy. When the coating meets a fire disaster, under the action of high temperature, along with the decomposition of hydroxypropyl methyl cellulose ether, the water molecules stored in the coating can play a role in reducing the temperature of combustible materials after being released, and meanwhile, a large amount of heat is also taken away by evaporation of the water, so that the combustion temperature can be quickly reduced, and the flame retardant effect is improved. Meanwhile, the hydroxypropyl methyl cellulose ether forms a nonflammable carbonized layer after being burnt, and the carbonized layer forms a barrier layer which can organize the combustion of the comburent to continue burning.
(2) The sericite powder adopted by the invention can effectively prevent the agglomeration problem of the cementing material and improve the dispersibility among the components, because the sericite powder has the layered characteristic, the sericite powder can absorb the layered cracking in the process of grinding, and the cracked fragments can cut cement particles, thereby dispersing the agglomerated underwater particles and uniformly mixing the components together. In addition, the sericite powder has good heat resistance, and is beneficial to increasing the flame retardant property of the coating.
(3) The invention adopts the beet pulp to play a role in preventing the agglomeration of the gelled material in the grinding process, because the molasses in the beet pulp can generate the functions of selective adsorption and electric neutralization on the surface of the cement, thereby reducing the occurrence of ball adhesion in the powder process, further improving the dispersion degree of the gelled material, uniformly mixing all the components and being beneficial to improving the utilization of mechanical energy in the ball milling process.
(4) The calcium bicarbonate and the hydrotalcite powder adopted by the invention can be decomposed to generate carbon dioxide which can not be combusted at the initial stage of combustion and simultaneously generate water molecules, the carbon dioxide can effectively prevent combustible substances from contacting with oxygen to slow down combustion, and the water molecules can rapidly reduce the combustion temperature; meanwhile, oxides formed after the calcium bicarbonate and the hydrotalcite powder are decomposed are non-combustible substances, and the substances form an effective barrier layer and play a good flame-retardant role.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The experimental procedures, in which specific conditions are not noted in the following examples, are generally carried out according to conventional conditions or according to conditions recommended by the manufacturers.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The reagents or starting materials used in the present invention can be purchased from conventional sources, and unless otherwise specified, the reagents or starting materials used in the present invention can be used in a conventional manner in the art or in accordance with the product specifications. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention. The preferred embodiments and materials described herein are intended to be exemplary only.
First embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder, the beet pulp and the nano clay are mixed and then placed in a ball mill for grinding for 25min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 20min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.55, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Second embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder, the beet pulp and the nano clay are mixed and then placed in a ball mill for grinding for 30min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the water glass are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 15min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.6, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Third embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the sulphoaluminate cement, the calcium bicarbonate, the sericite powder, the beet pulp and the nano clay are mixed and then placed in a ball mill for grinding for 35min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 25min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.54, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Fourth embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder, the beet pulp and the nano clay are mixed and then placed in a ball mill for grinding for 20min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the silica sol are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 20min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.54, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Fifth embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder, the beet pulp, the nano clay and the magnesium hydroxide are mixed and then placed in a ball mill for grinding for 25min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 25min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.55, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Sixth embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder, the beet pulp, the nano clay, the aluminum hydroxide and the antimony trioxide are mixed and then placed in a ball mill for grinding for 25min, and a first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 30min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.56, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Seventh embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder, the beet pulp, the nano clay, the zinc borate and the iron phosphate are mixed and then placed in a ball mill for grinding for 25min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 30min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.56, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Eighth embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder and the beet pulp are mixed and then placed in a ball mill for grinding for 25min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 20min, so as to obtain a second powder for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.55, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Ninth embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the sericite powder, the beet pulp and the nano clay are mixed and then placed in a ball mill for grinding for 25min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 20min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.55, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
Tenth embodiment
A preparation method of a fireproof flame-retardant wall coating comprises the following steps:
(i) weighing the following raw materials in proportion:
(ii) according to the raw materials and the proportion thereof in the step (i) of the embodiment, the portland cement, the calcium bicarbonate, the sericite powder, the beet pulp and the nano clay are mixed and then placed in a ball mill for grinding for 25min, and then the first mixed powder is obtained for standby.
(iii) According to the raw materials and the proportion thereof in the step (i) of the embodiment, the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the sodium phosphate are added into the first mixed powder obtained in the step (ii), and then the mixture is stirred for 20min, so that a second powder is obtained for standby.
(iv) And mixing the second powder and water according to the water-cement ratio of 1:0.55, and uniformly stirring to obtain slurry, namely the fireproof flame-retardant wall coating.
And (3) performance testing:
the fireproof flame-retardant wall paint prepared in the above examples and test examples is coated on the surface of a cement board to form a flame-retardant coating (with a thickness of about 0.8 mm), and then the coating is heated to 600 ℃ to record the average ignition time. In addition, the limit oxygen index of the fireproof flame-retardant wall coating is tested according to GB/T2406.2-2009, and the performance test results are shown in Table 1.
| Example number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Average ignition time/min | 112 | 104 | 108 | 115 | 119 | 126 | 122 | 58 | 76 | 73 |
| Limiting oxygen index/%) | 33.6 | 29.8 | 32.1 | 35.5 | 34.4 | 38.6 | 36.7 | 23.2 | 24.9 | 24.4 |
| Fire protection rating UL94 | V-0 | V-0 | V-0 | V-0 | V-0 | V-0 | V-0 | V-2 | V-2 | V-2 |
As can be seen from the above test data, the performance indexes of the first to seventh embodiments are significantly higher than those of the eighth to tenth embodiments, wherein the eighth embodiment is compared to the first embodiment without adding nanoclay and hydroxypropyl methylcellulose ether, the ninth embodiment is compared to the first embodiment without adding calcium bicarbonate, and the tenth embodiment is compared to the first embodiment without adding hydrotalcite. Researches show that the components play an important role in improving the flame retardant capability of the coating, and the research shows that the hydroxypropyl methyl cellulose ether and the nano clay can absorb a large amount of free water to enter the molecular structure of the coating after being mixed with water, when the coating encounters a fire disaster, under the action of high temperature, the water molecules stored in the coating can be released along with the decomposition of the hydroxypropyl methyl cellulose ether to play a role in reducing the temperature of combustible materials, and meanwhile, a large amount of heat is also taken away by evaporation of the water, so that the combustion temperature can be quickly reduced, and the flame retardant effect is improved. Meanwhile, the hydroxypropyl methyl cellulose ether forms a nonflammable carbonized layer after being burnt, and the carbonized layer forms a barrier layer which can organize the combustion of the comburent to continue burning. The calcium bicarbonate and the hydrotalcite powder can be decomposed to generate carbon dioxide which cannot be combusted at the initial stage of combustion and simultaneously generate water molecules, the carbon dioxide can effectively prevent combustible substances from contacting with oxygen to slow down combustion, and the water molecules can rapidly reduce the combustion temperature; meanwhile, oxides formed after the calcium bicarbonate and the hydrotalcite powder are decomposed are non-combustible substances, and the substances form an effective barrier layer and play a good flame-retardant role.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The fireproof flame-retardant wall paint is characterized by comprising the following raw materials in parts by weight:
2. the fireproof flame-retardant wall covering paint according to claim 1, further comprising water, wherein the water-cement ratio is 1:0.54 to 0.6.
3. The fireproof flame-retardant wall paint according to claim 1, further comprising 4-12 parts by weight of a smoke suppressant; preferably, the smoke suppressant comprises: at least one of magnesium hydroxide, aluminum hydroxide, zinc borate, molybdenum trioxide and ammonium molybdate.
4. The fireproof flame-retardant wall paint according to claim 1, further comprising 2-5 parts by weight of a flame-retardant synergist; preferably, the flame retardant synergist comprises: antimony trioxide, polytetrafluoroethylene and iron phosphate.
5. The fireproof flame-retardant wall surface coating according to any one of claims 1 to 4, wherein the cementing material comprises any one of Portland cement and sulphoaluminate cement; alternatively, the film-forming agent comprises: at least one of water glass, silica sol and phosphate.
6. The fireproof and flame-retardant wall covering paint according to any one of claims 1 to 4, wherein the beet pulp mainly consists of molasses and crude fiber.
7. A preparation method of the fireproof flame-retardant wall paint is characterized by comprising the following steps:
(1) mixing the cementing material, calcium bicarbonate, sericite powder, beet pulp and nano clay in the fireproof and flame-retardant wall paint according to any one of claims 1 to 6, and then grinding to obtain a first mixed powder material;
(2) mixing the first mixed powder with the hydrotalcite powder, the hydroxypropyl methyl cellulose ether and the film forming agent, stirring, and uniformly stirring to obtain second powder;
(3) and mixing the second powder with water to prepare slurry.
8. The method for preparing a fireproof flame-retardant wall surface coating according to claim 7, further comprising the step of adding the smoke suppressant of the fireproof flame-retardant wall surface coating according to claim 3 in the step (1); or further comprising the step of adding a flame retardant synergist in the fireproof flame retardant wall coating of claim 4 in the step (1).
9. The preparation method of the fireproof flame-retardant wall coating according to claim 7, wherein in the step (1), the grinding time is 20-35 min; or, in the step (2), the stirring time is 15-25 min.
10. The application of the fireproof flame-retardant wall paint of any one of claims 1 to 6 or the fireproof flame-retardant wall paint prepared by the method of any one of claims 7 to 9 in the field of building engineering.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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