CN108929631B - Preparation method of high-fire-resistance composite color steel tile - Google Patents
Preparation method of high-fire-resistance composite color steel tile Download PDFInfo
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- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
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- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
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- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- 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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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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Abstract
The invention belongs to the technical field of color steel tile processing, and particularly relates to a preparation method of a high-fire-resistance composite color steel tile, which comprises the following steps: (1) preprocessing a color steel tile body; (2) preparing a heat conduction layer coating, coating the heat conduction layer coating on the color steel tile body to form a semi-finished product A, then forming a through hole on the semi-finished product A, and then forming a corrugated structure; (3) forming a refractory layer to obtain a semi-finished product B; (4) forming the finish paint layer to obtain the composite color steel tile; according to the invention, the heat conduction layers are arranged on the two sides of the color steel tile body, and the fire-resistant layers are arranged on the outer sides of the heat conduction layers, so that when the color steel tile is used, if a fire disaster occurs, the fire-resistant layers have a better fire-resistant and heat-insulating effect, and the heat conduction layers can radiate heat transferred to the color steel tile body, thereby avoiding the deformation problem caused by over-concentrated heating.
Description
Technical Field
The invention belongs to the technical field of color steel tile processing, and particularly relates to a preparation method of a high-fire-resistance composite color steel tile.
Background
The color steel tile, also called color pressed tile, is a pressed board made of color coated steel plate and through rolling and cold bending into various wave forms. The color coated steel sheet for manufacturing color steel tiles is generally a cold-rolled steel sheet or a galvanized steel sheet, and is a steel sheet product which is prepared by performing surface chemical treatment on a steel sheet, then performing roller coating or compounding organic films such as PVC (polyvinyl chloride) and the like, and baking and curing the coated steel sheet. The color coated steel plate has the properties of high mechanical strength and easy forming of steel materials, and also has good decoration and corrosion resistance of coating materials. The composite material is suitable for roof, wall and inner and outer wall decoration of industrial and civil buildings, warehouses, special buildings and large-span steel structure houses, has the characteristics of light weight, high strength, rich color, convenient and quick construction, earthquake resistance, fire resistance, rain resistance, long service life, maintenance-free property and the like, and is widely popularized and applied.
However, the color steel tile building has the fatal disadvantage, and because the color steel tile is very thin and has poor high temperature resistance, the color steel tile is easy to deform after being heated, so that the building collapses and the like. In contrast, chinese patent application No. CN201711210549.3 discloses a method for improving fire resistance of color steel tiles, which comprises treating the surface of color steel tiles, and coating a layer of heat-insulating and fireproof material, thereby enhancing the fireproof performance of the color steel tiles and preventing the color steel tiles from being damaged by high temperature when fire occurs.
Based on the research of the applicant of the present application on the heat resistance of the color steel tile, when the color steel tile is heated, the steel plate deforms due to the fact that excessive heat is transferred to the color steel tile body, namely the steel plate; therefore, simply coating on the color steel tile to form a heat-insulating and fireproof layer cannot effectively solve the deformation problem caused by long-time high-temperature baking of the color steel tile in the fire occurrence process.
Disclosure of Invention
The invention aims to provide a preparation method of a high-fire-resistance composite color steel tile, and the prepared composite color steel tile can adapt to long-time high-temperature baking without thermal deformation, so that the color steel tile can keep the performance in the fire process, and the collapse problem of buildings is avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a high fire resistance composite color steel tile comprises the following steps:
(1) carrying out primary treatment on the color steel tile body, namely a cold-rolled steel plate or a galvanized steel plate, wherein the primary treatment comprises removing oil stains, dust and sundries;
(2) preparing a heat conduction layer coating: weighing raw materials according to a formula, dispersing graphene oxide powder and aluminum oxide powder into a high-temperature-resistant adhesive, uniformly stirring, spraying the mixture onto the color steel tile body obtained in the step (1), drying to form a heat conduction layer, and respectively processing two sides of the color steel tile body to obtain a semi-finished product A with two heat conduction layers arranged on two sides;
forming a through hole in the semi-finished product A, wherein the aperture of the through hole is 0.8-1.5 cm; the distance between the through holes is 2-5 cm; then, forming corrugations on the semi-finished product A by using a forming machine;
(3) preparing a flame-retardant coating: weighing raw materials according to a formula, dispersing clay into water, adding corundum powder, alumina powder and silica powder under the stirring condition, carrying out ultrasonic dispersion treatment for 30-40 min, adding yellow dextrin, and uniformly stirring;
coating the prepared flame retardant coating on the semi-finished product A which is provided with the through holes and is formed into a corrugated structure in the step (2) to obtain a semi-finished product B;
(4) preparing surface paint layer, weighing raw materials according to the formula, and mixing rutile type titanium dioxide and SiO2And after premixing the filler, adding the filler and the pigment into the acrylic acid synthetic emulsion, uniformly stirring, spraying the mixture on a semi-finished product B, and drying to obtain the high-fire-resistance composite color steel tile.
The invention has the following technical effects: according to the composite color steel tile prepared by the invention, the heat conducting layers are arranged on the two sides of the color steel tile body, the fire-resistant layers are arranged on the outer sides of the heat conducting layers, when the composite color steel tile is used, if a fire disaster occurs, the fire-resistant layers have a good fire-resistant heat insulation effect, and the heat conducting layers can radiate heat transferred to the color steel tile body, so that the deformation problem caused by over-concentrated heating is avoided.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further clarified with the specific embodiments.
The invention provides a preparation method of a high-fire-resistance composite color steel tile, which comprises the following steps:
(1) carrying out primary treatment on the color steel tile body, namely a cold-rolled steel plate or a galvanized steel plate, wherein the primary treatment comprises removing oil stains, dust and sundries;
(2) preparing a heat conduction layer coating: weighing raw materials according to a formula, dispersing graphene oxide powder and aluminum oxide powder into a high-temperature-resistant adhesive, uniformly stirring, spraying the mixture onto the color steel tile body obtained in the step (1), drying to form a heat conduction layer, and respectively processing two sides of the color steel tile body to obtain a semi-finished product A with two heat conduction layers arranged on two sides;
forming a through hole in the semi-finished product A, wherein the aperture of the through hole is 0.8-1.5 cm; the distance between the through holes is 2-5 cm; then, forming corrugations on the semi-finished product A by using a forming machine;
(3) preparing a flame-retardant coating: weighing raw materials according to a formula, dispersing clay into water, adding corundum powder, alumina powder and silica powder under the stirring condition, carrying out ultrasonic dispersion treatment for 30-40 min, adding yellow dextrin, and uniformly stirring;
coating the prepared flame retardant coating on the semi-finished product A which is provided with the through holes and is formed into a corrugated structure in the step (2) to obtain a semi-finished product B;
(4) preparing surface paint layer, weighing raw materials according to the formula, and mixing rutile type titanium dioxide and SiO2And after premixing the filler, adding the filler and the pigment into the acrylic acid synthetic emulsion, uniformly stirring, spraying the mixture on a semi-finished product B, and drying to obtain the high-fire-resistance composite color steel tile.
According to the color steel tile, the heat conducting layers are arranged on the two sides of the color steel tile body, and the fire-resistant layers are arranged on the outer sides of the heat conducting layers, so that when the color steel tile is used, if a fire disaster happens, the fire-resistant layers have a good fire-resistant and heat-insulating effect, and the heat conducting layers can timely dissipate heat transferred to the color steel tile body, so that the problem that the color steel tile is deformed due to long-time high-temperature baking of the color steel tile body is solved.
In the formulation of the refractory layer of the present invention, the clay is a plastic aluminosilicate with very small particles (less than 2 μm), and the clay contains small amounts of magnesium, iron, sodium, potassium and calcium in addition to aluminum; the corundum powder and the alumina are both materials with excellent fire resistance; the main component of the silica powder is SiO2And with SiO2The content of (A) is increased, and the refractoriness is higher, SiO in the silica powder in the invention2Content is not less than 96 percent, Na2O+K2O is less than or equal to 0.2 to 0.4 percent. The yellow dextrin is used for initial shaping of the raw materials, and has strong viscosity after being dissolved in water, so that the yellow dextrinThe raw materials are uniformly mixed and then are bonded and formed. The raw materials in the formula of the fire-resistant layer are matched with each other, so that the formed fire-resistant layer is ensured to have better fire resistance and better deformation resistance in high-temperature baking, and the problem that the color steel tile deforms to cause building collapse when being baked at high temperature is prevented.
In the invention, the fire-resistant layer is prepared from the following raw materials in parts by weight: 42-75 parts of clay, 2-7 parts of corundum powder, 1-5 parts of alumina powder, 8-20 parts of silica powder, 10-35 parts of yellow dextrin and 95-130 parts of water.
Under the preferable condition, the fire-resistant layer is prepared from the following raw materials in parts by weight: 50-60 parts of clay, 3-5 parts of corundum powder, 2-4 parts of alumina powder, 13-18 parts of silica powder, 15-25 parts of yellow dextrin and 100-120 parts of water.
More preferably, the refractory layer is prepared from the following raw materials in parts by weight: 55 parts of clay, 4 parts of corundum powder, 3 parts of alumina powder, 15 parts of silica powder, 20 parts of yellow dextrin and 110 parts of water.
Further, the particle sizes of the clay and the silica powder are both below 3 mm;
the particle sizes of the corundum powder and the alumina powder are both below 2 mm.
Furthermore, according to the invention, the heat conduction layer comprises a high temperature resistant adhesive doped with graphene oxide powder and aluminum oxide powder. According to the invention, the graphene oxide and the alumina powder are dispersed into the high-temperature-resistant adhesive and coated on the color steel tile body, so that the heat conduction performance of the color steel tile body is improved, and the tendency that the color steel tile body deforms after being locally heated is avoided.
The high-temperature-resistant adhesive has excellent high-temperature resistance, and can keep better adhesive performance at high temperature; specifically, the adhesive can be poly-brand adhesives, such as JL-6810 type refractory metal adhesive, JL-6103 refractory single-component epoxy resin adhesive, JL-528 refractory metal glue, and JL-510 transparent refractory AB adhesive.
The graphene oxide is prepared by adopting an improved Hummers methodAnd (5) obtaining the graphene oxide. The method comprises the following steps: flake graphite, K2S2O8、P2O5Mixing with concentrated sulfuric acid for reaction to obtain pre-oxidized graphite, adding the pre-oxidized graphite and NaNO3 into precooled concentrated sulfuric acid, and slowly adding KMnO4Reacting under an ice bath condition, then transferring to a normal-temperature water bath for reaction, slowly adding deionized water, and transferring to a 98 ℃ water bath for reaction; adding deionized water again, cooling, and adding 30% H2O2And obtaining the graphite oxide. Washing the graphite oxide with hydrochloric acid solution until no SO is generated4 2-Detect (with BaCl)2Detecting); then, carrying out ultrasonic treatment and centrifugation, wherein suspension which cannot be separated is the graphene oxide obtained by stripping, and removing precipitates; and (3) putting the GO solution into a dialysis bag for dialysis to obtain finally cleaned graphene oxide. After oxidation treatment, the graphite oxide still maintains the layered structure of graphite, but a plurality of oxygen-based functional groups are introduced to each layer of graphene single sheet, so that the binding capacity of the graphite oxide and the high-temperature-resistant adhesive is improved.
Furthermore, in the invention, the content of each material in the heat conduction layer can be selected in a wide range, so as to ensure that the formed heat conduction layer has excellent heat conduction capability. The heat conduction layer is prepared from the following raw materials in parts by weight: 55-80 parts of high-temperature-resistant adhesive, 3-8 parts of graphene oxide powder and 1-5 parts of alumina powder.
In the invention, the thickness of each layer arranged on two sides of the color steel tile body influences the performance of each layer, and preferably, the thickness of the heat conduction layer is 2-5 mm;
the thickness of the fire-resistant layer is 2-7 mm;
the thickness of the finish paint layer is 0.5-1 mm.
In the present invention, the main function of the finish paint layer is to provide protection and to present the color of the color steel tile. In order to further improve the fire resistance of the color steel tile, the finish paint layer comprises acrylic acid synthetic emulsion, rutile type titanium dioxide and SiO2Fillers and pigments; wherein the solid content of the acrylic acid synthetic emulsion is not less than65 percent; the rutile type titanium dioxide has a particle size of 0.2-0.4 mu m; the SiO2The particle size of the filler is 1-3 mu m;
rutile type titanium dioxide is dispersedly filled in the finish paint layer, and has a certain reflection effect on high-temperature heat radiation, so that the overall influence of high-temperature baking on the temperature rise of the color steel tile when a fire disaster occurs is reduced;
the SiO2The filler is filled in the finish paint layer in a dispersing manner, and part of the filler protrudes out of the finish paint layer to form a rough matte effect, so that high-temperature heat radiation is scattered, and the influence of high-temperature baking on the temperature rise of the color steel tile when a fire disaster occurs is further reduced.
The pigment can be selected from pigments commonly used by those skilled in the art in the preparation of color steel tiles, and the details of the present invention are not repeated herein.
Further, the finish paint layer is prepared from the following raw materials in parts by weight: 50-70 parts of acrylic acid synthetic emulsion, 0.5-1 part of rutile titanium dioxide and SiO21.5-3 parts of filler and 5-10 parts of pigment.
According to the preparation method of the high-fire-resistance composite color steel tile, the through holes are formed in the color steel tile body provided with the heat conduction layer, and two sides of the fire-resistant layer coating are mutually connected during coating, so that the fire-resistant layer further improves the fixing effect of the color steel tile body, and the defect that the color steel tile body is easy to deform during high-temperature baking is overcome.
The high fire resistance composite color steel tile provided by the invention is further illustrated by the following specific examples.
Example 1
A composite color steel tile comprises a color steel tile body and heat conduction layers arranged on two sides of the color steel tile body, wherein a fire-resistant layer is arranged on the outer side of each heat conduction layer, and a finish paint layer is arranged on the outer side of each fire-resistant layer;
the flame retardant coating is prepared from the following raw materials in parts by weight: 55 parts of clay, 4 parts of corundum powder, 3 parts of alumina powder, 15 parts of silica powder, 20 parts of yellow dextrin and 110 parts of water; (ii) a The thickness of the fire-resistant layer is 5 mm;
the particle sizes of the clay and the silica powder are both below 3 mm;
the particle sizes of the corundum powder and the alumina powder are both below 2 mm;
the heat conduction layer is prepared from the following raw materials in parts by weight: 60 parts of high-temperature-resistant adhesive, 5 parts of graphene oxide powder and 3 parts of alumina powder; the thickness of the heat conduction layer is 4 mm;
the finish paint layer is prepared from the following raw materials in parts by weight: 60 parts of acrylic acid synthetic emulsion, 0.8 part of rutile titanium dioxide and SiO22.6 parts of filler and 8 parts of pigment; the thickness of the finish paint layer is 0.8 mm;
the preparation method of the composite color steel tile comprises the following steps:
(1) carrying out primary treatment on the color steel tile body, namely a cold-rolled steel plate or a galvanized steel plate, wherein the primary treatment comprises removing oil stains, dust and sundries;
(2) preparing a heat conduction layer coating: weighing raw materials according to a formula, dispersing graphene oxide powder and aluminum oxide powder into a high-temperature-resistant adhesive, uniformly stirring, spraying the mixture onto the color steel tile body obtained in the step (1), drying to form a heat conduction layer, and respectively processing two sides of the color steel tile body to obtain a semi-finished product A with two heat conduction layers arranged on two sides;
forming a through hole in the semi-finished product A, wherein the aperture of the through hole is 1.2 cm; the distance between the through holes is 4 cm; then, forming corrugations on the semi-finished product A by using a forming machine;
(3) preparing a flame-retardant coating: weighing raw materials according to a formula, dispersing clay into water, adding corundum powder, alumina powder and silica powder under the condition of stirring, then carrying out ultrasonic dispersion treatment for 30min, adding yellow dextrin, and stirring uniformly;
coating the prepared flame retardant coating on the semi-finished product A which is provided with the through holes and is formed into a corrugated structure in the step (2) to obtain a semi-finished product B;
(4) preparing surface paint layer, weighing raw materials according to the formula, and mixing rutile type titanium dioxide and SiO2And after premixing the filler, adding the filler and the pigment into the acrylic acid synthetic emulsion, uniformly stirring, spraying the mixture on a semi-finished product B, and drying to obtain the high-fire-resistance composite color steel tile.
Example 2
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that:
the flame retardant coating is prepared from the following raw materials in parts by weight: 50 parts of clay, 3 parts of corundum powder, 2 parts of alumina powder, 13 parts of silica powder, 15 parts of yellow dextrin and 100 parts of water; and keeping the rest unchanged to obtain the composite color steel tile.
Example 3
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that:
the flame retardant coating is prepared from the following raw materials in parts by weight: 60 parts of clay, 5 parts of corundum powder, 4 parts of alumina powder, 18 parts of silica powder, 25 parts of yellow dextrin and 120 parts of water; and keeping the rest unchanged to obtain the composite color steel tile.
Example 4
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that:
the flame retardant coating is prepared from the following raw materials in parts by weight: 42 parts of clay, 2 parts of corundum powder, 1 part of alumina powder, 8 parts of silica powder, 10 parts of yellow dextrin and 95 parts of water;
the heat conduction layer is prepared from the following raw materials in parts by weight: 55 parts of high-temperature-resistant adhesive, 3 parts of graphene oxide powder and 1 part of alumina powder;
the finish paint layer is prepared from the following raw materials in parts by weight: 50 parts of acrylic acid synthetic emulsion, 0.5 part of rutile titanium dioxide and SiO21.5 parts of filler and 5 parts of pigment;
and keeping the rest unchanged to obtain the composite color steel tile.
Example 5
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that:
the flame retardant coating is prepared from the following raw materials in parts by weight: 75 parts of clay, 7 parts of corundum powder, 5 parts of alumina powder, 20 parts of silica powder, 35 parts of yellow dextrin and 130 parts of water;
the heat conduction layer is prepared from the following raw materials in parts by weight: 80 parts of high-temperature-resistant adhesive, 8 parts of graphene oxide powder and 5 parts of alumina powder;
the finish paint layer is prepared from the following raw materials in parts by weight: acrylic acid synthetic emulsion 70 parts, rutile type titanium dioxide 1 part, SiO23 parts of filler and 10 parts of pigment;
and keeping the rest unchanged to obtain the composite color steel tile.
Example 6
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that:
the thickness of the heat conduction layer is 3 mm;
the thickness of the refractory layer is 6 mm;
the thickness of the finish paint layer is 0.7 mm; and keeping the rest unchanged to obtain the composite color steel tile.
Example 7
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that:
the thickness of the heat conduction layer is 2 mm;
the thickness of the fire-resistant layer is 2 mm;
the thickness of the finish paint layer is 0.5 mm; and keeping the rest unchanged to obtain the composite color steel tile.
Example 8
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that:
the thickness of the heat conduction layer is 5 mm;
the thickness of the fire-resistant layer is 7 mm;
the thickness of the finish paint layer is 1 mm; and keeping the rest unchanged to obtain the composite color steel tile.
Example 9
In this embodiment, a method for manufacturing a composite color steel tile according to embodiment 1 is different from the method for manufacturing a composite color steel tile, in which in the step (2), the aperture of the through holes is 0.8cm, and the distance between the through holes is 4 cm; and keeping the rest unchanged to obtain the composite color steel tile.
Example 10
In this embodiment, a method for manufacturing a composite color steel tile according to embodiment 1 is different from the method for manufacturing a composite color steel tile, in which in step (2), the aperture of the through holes is 1.5cm, and the distance between the through holes is 4 cm; and keeping the rest unchanged to obtain the composite color steel tile.
Comparative example 1
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that: the flame retardant coating is prepared from the following raw materials in parts by weight: 30 parts of clay, 8 parts of corundum powder, 0.5 part of alumina powder, 4 parts of silica powder, 15 parts of yellow dextrin and 120 parts of water; and keeping the rest unchanged, and preparing the composite color steel tile.
Comparative example 2
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that: the heat conduction layer is prepared from the following raw materials in parts by weight: 40 parts of high-temperature-resistant adhesive, 5 parts of graphene oxide powder and 2 parts of alumina powder; and keeping the rest unchanged, and preparing the composite color steel tile.
Comparative example 3
The present embodiment is a method for manufacturing a composite color steel tile according to embodiment 1, except that: the finish paint layer is prepared from the following raw materials in parts by weight: 60 parts of acrylic acid synthetic emulsion, 0.8 part of rutile titanium dioxide and SiO22 parts of filler and 8 parts of pigment; and keeping the rest unchanged, and preparing the composite color steel tile.
Comparative example 4
In this embodiment, according to the method for manufacturing a composite color steel tile in embodiment 1, except that in the method for manufacturing a composite color steel tile, in the step (2), a through hole is not formed, but a forming agent is directly used to form a corrugated structure on a semi-finished product a; and keeping the rest unchanged to obtain the composite color steel tile.
The properties of the composite color steel tile prepared in the above example were tested according to the following test methods, and the test data were summarized and collated in table 1.
1. The refractoriness of the color steel tiles obtained in the examples is tested according to the test method of refractoriness of GB/T7322-2007 refractory material.
2. The creep rate of the composite color steel tiles obtained in the examples was tested according to the GB/T5073-1985 refractory product compressive creep test method.
3. The compressive strength of the composite color steel tile obtained in the example is tested according to the test method of GB/T5072-1985 compact-shaped refractory product normal temperature compressive strength.
Table 1:
the test data are combined to show that the composite color steel tile provided by the invention has excellent fire resistance, the creep rate is small when the composite color steel tile is processed at high temperature, and the problem of building collapse caused by deformation in case of fire is avoided.
The foregoing shows and describes the general principles, essential features, and inventive features of this invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A preparation method of a high fire resistance composite color steel tile is characterized by comprising the following steps: the method comprises the following steps:
(1) carrying out primary treatment on the color steel tile body, namely a cold-rolled steel plate or a galvanized steel plate, wherein the primary treatment comprises removing oil stains, dust and sundries;
(2) preparing a heat conduction layer coating: weighing raw materials according to a formula, dispersing graphene oxide powder and aluminum oxide powder into a high-temperature-resistant adhesive, uniformly stirring, spraying the mixture onto the color steel tile body obtained in the step (1), drying to form a heat conduction layer, and respectively processing two sides of the color steel tile body to obtain a semi-finished product A with two heat conduction layers arranged on two sides;
forming a through hole in the semi-finished product A, wherein the aperture of the through hole is 0.8-1.5 cm; the distance between the through holes is 2-5 cm; then, forming corrugations on the semi-finished product A by using a forming machine;
(3) preparing a flame-retardant coating: weighing raw materials according to a formula, dispersing clay into water, adding corundum powder, alumina powder and silica powder under the stirring condition, carrying out ultrasonic dispersion treatment for 30-40 min, adding yellow dextrin, and uniformly stirring;
coating the prepared flame retardant coating on the semi-finished product A which is provided with the through holes and is formed into a corrugated structure in the step (2) to obtain a semi-finished product B;
(4) preparing surface paint layer, weighing raw materials according to the formula, and mixing rutile type titanium dioxide and SiO2After premixing the filler, adding the filler and the pigment into the acrylic acid synthetic emulsion, uniformly stirring, spraying the mixture on a semi-finished product B, and drying to obtain the high-fire-resistance composite color steel tile;
the flame retardant coating is prepared from the following raw materials in parts by weight: 42-75 parts of clay, 2-7 parts of corundum powder, 1-5 parts of alumina powder, 8-20 parts of silica powder, 10-35 parts of yellow dextrin and 95-130 parts of water;
the heat conduction layer is prepared from the following raw materials in parts by weight: 55-80 parts of high-temperature-resistant adhesive, 3-8 parts of graphene oxide powder and 1-5 parts of alumina powder;
the finish paint layer is prepared from the following raw materials in parts by weight: 50-70 parts of acrylic acid synthetic emulsion, 0.5-1 part of rutile titanium dioxide, 1.5-3 parts of SiO2 filler and 5-10 parts of pigment.
2. The method for preparing the composite color steel tile with high fire resistance according to claim 1, wherein the method comprises the following steps: the thickness of the heat conduction layer is 2-5 mm;
the thickness of the fire-resistant layer is 2-7 mm;
the thickness of the finish paint layer is 0.5-1 mm.
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| CN106590415A (en) * | 2016-11-18 | 2017-04-26 | 成都锦汇科技有限公司 | Preparation process of weather-resisting colored steel plate |
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| CN106590415A (en) * | 2016-11-18 | 2017-04-26 | 成都锦汇科技有限公司 | Preparation process of weather-resisting colored steel plate |
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| CN107971197A (en) * | 2017-11-28 | 2018-05-01 | 太和县盛泰彩钢有限公司 | A kind of method for improving color steel tile fire resistance |
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