Light, heat-preservation, fireproof and heat-insulation single-sided color steel phenolic aldehyde plate and preparation method thereof

Abstract

The invention relates to the technical field of color steel phenolic aldehyde plates, which is composed of the following raw materials by weight: 45-60 parts of phenolic resin; 5 to 10 parts of pentane; 15 to 20 parts of a fire retardant; 10 to 15 parts of filler; 3 to 5 parts of hexamethylenetetramine; 1-2 parts of a silane coupling agent; and 0.5-1 part of an organic tin stabilizer. According to the light, heat-preservation, fireproof and heat-insulation single-face color steel phenolic aldehyde plate, phenolic resin is adopted as a base material, a closed-cell foaming structure and a high-performance fireproof additive are combined, the unification of low density and high heat preservation performance is achieved, meanwhile, the A-level fireproof standard is achieved, the color steel plate, the aluminum foil and the non-woven fabric are tightly combined through the lamination composite technology, and the heat preservation performance is good. According to the present invention, the mechanical strength and the weather resistance of the sheet material are improved, the layering risk is avoided, the light weight, the efficient heat insulation, the strong flame retardation and the durability are provided, the material can be widely used in building exterior walls, refrigeration houses and fire barrier scenes, the energy consumption is effectively reduced, and the safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of color-coated steel phenolic panels, in particular to a lightweight, heat-insulating, fire-resistant and heat-insulating single-sided color-coated steel phenolic panel and a preparation method thereof. Background Art

[0002] Color-coated steel sheet is a composite sheet with a metal substrate as its core, coated with multiple layers of color coatings after surface cleaning and chemical treatment. The surface layer is typically coated with polyester, silicon-modified polyester, or fluorocarbon coating, giving it a rich color and weather resistance. It combines the strength of color-coated phenolic sheet with the corrosion resistance of the coating. Color-coated steel sheet is widely used in the building envelope of industrial and civil buildings, such as the roofs and walls of factories, warehouses, prefabricated houses, and gymnasiums. Its light weight, easy installation, and corrosion resistance make it an ideal choice for temporary buildings, rapid construction, and large-span structures. It is also used in the decoration of home appliance housings and partitions.

[0003] However, in general, traditional color steel plates are mainly composed of a steel plate substrate and an organic coating. The substrate is mostly galvanized steel plate, and the coating is mainly polyester or polyethylene. The core disadvantage is that the thermal insulation performance is poor and it cannot effectively block heat transfer; the fire resistance is insufficient and it is easy to soften, deform or even burn when exposed to high temperature; and the dead weight is large, which increases the load on the building structure. In addition, traditional color steel plates are prone to rust in humid environments, and their service life is limited, making it difficult to meet the comprehensive needs of modern buildings for energy saving, fire prevention and lightweight.

[0004] Based on this, the present invention provides a lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board and a preparation method thereof to solve the above-mentioned technical problems. Summary of the Invention

[0005] The object of the present invention is to provide a lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board and a preparation method thereof, so as to solve the problems mentioned in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board, which is composed of the following raw materials in parts by weight:

[0008] Phenolic resin: 45-60 parts;

[0009] Pentane: 5-10 parts;

[0010] Fire retardant: 15-20 parts;

[0011] Filler: 10-15 parts;

[0012] Hexamethylenetetramine: 3-5 parts;

[0013] Silane coupling agent: 1-2 parts;

[0014] Organotin stabilizer: 0.5-1 part.

[0015] Preferably, the phenolic resin is prepared by a polycondensation reaction of phenol and formaldehyde in the presence of a sodium hydroxide alkaline catalyst at 70-90°C.

[0016] Preferably, the pentane is obtained from petroleum fractions by fractional distillation, and the fractionation temperature range is 36-69°C.

[0017] Preferably, the fire retardant is one of aluminum hydroxide and expanded graphite.

[0018] Preferably, the filler is one of silica or glass fiber.

[0019] Preferably, the hexamethylenetetramine is prepared by condensation reaction of formaldehyde and ammonia water under alkaline conditions at 60-80°C.

[0020] Preferably, the silane coupling agent is prepared by hydrolysis condensation reaction of chlorosilane and alcohol at 80-100° C. under the protection of inert gas.

[0021] Based on the material components of the above-mentioned color steel phenolic board, the present invention also proposes a method for preparing a lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board, comprising the following steps:

[0022] S1. Feeding and mixing: According to the formula, weigh 45-60 parts of phenolic resin; 5-10 parts of pentane; 15-20 parts of fire retardant; 10-15 parts of filler; 3-5 parts of hexamethylenetetramine; 1-2 parts of silane coupling agent; 0.5-1 part of organotin stabilizer, put into a high-speed mixer, mix at 40-50 ° C for 10-15 minutes to ensure uniform dispersion, pour the mixture into a mold pre-coated with a release agent, and send it to a pre-foaming chamber at 60-80 ° C for 5-8 minutes to form a closed-cell structure;

[0023] S2. Lamination: Lay embossed aluminum foil, non-woven fabric, and color-coated steel sheets in sequence, apply adhesive, and hot-press at 0.8-1.2 MPa and 100-120°C for 15-20 minutes.

[0024] S3. Secondary foaming and curing: The composite board is transferred to a high-pressure foaming furnace and secondary foamed for 30-40 minutes at 120-140°C and 0.5MPa. The final density is controlled at 50-80kg / m 3 ;

[0025] S4. Post-processing and finished products: After cooling, the product is rolled to a fixed length, irregular edges are trimmed, and high-temperature resistant side protection paper is applied. The product is cut into 2m or 4m lengths as required, and packaged and stored after performance testing.

[0026] Preferably, the thickness of the embossed aluminum foil in step S2 is 0.05-0.1 mm, and the weight of the non-woven fabric is 80-100 g / m 2 The thickness of the color steel plate is 0.3-0.5mm.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The lightweight, heat-insulating, fire-proof and heat-insulating single-sided color steel phenolic board proposed in the present invention adopts phenolic resin as the matrix material, combined with a closed-cell foaming structure and high-performance fire-retardant additives, to achieve the unity of low density and high thermal insulation performance, while meeting Class A fire protection standards. The lamination composite process tightly combines the color steel plate, aluminum foil and non-woven fabric, which not only improves the mechanical strength and weather resistance of the board, but also avoids the risk of delamination. The present invention has the advantages of lightweight, high-efficiency heat insulation, strong flame retardancy and durability, and can be widely used in building exterior walls, cold storage, and fire isolation belt scenarios, effectively reducing energy consumption and improving safety. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] 1. Materials:

[0031] The materials of the light-weight, heat-insulating, fire-proof and heat-insulating single-sided color steel phenolic board of the present invention are commercially available unless otherwise specified;

[0032] The present invention provides a lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board, which is composed of the following raw materials in parts by weight:

[0033] Phenolic resin: 45-60 parts;

[0034] Pentane: 5-10 parts;

[0035] Fire retardant: 15-20 parts;

[0036] Filler: 10-15 parts;

[0037] Hexamethylenetetramine: 3-5 parts;

[0038] Silane coupling agent: 1-2 parts;

[0039] Organotin stabilizer: 0.5-1 part.

[0040] It should also be noted that phenolic resin is prepared by polycondensation of phenol and formaldehyde in the presence of sodium hydroxide as an alkaline catalyst at 70-90°C.

[0041] It should also be noted that pentane is produced from petroleum fractions through a fractionation process, and the distillation temperature range is 36-69°C.

[0042] Among them, it should be noted that the fire retardant is one of aluminum hydroxide or expanded graphite.

[0043] It should also be noted that the filler is a kind of silica or glass fiber.

[0044] It should be noted that hexamethylenetetramine is prepared by condensation reaction of formaldehyde and ammonia water at 60-80°C under alkaline conditions.

[0045] It should also be noted that the silane coupling agent is prepared by hydrolysis condensation reaction of chlorosilane and alcohol at 80-100°C under the protection of inert gas.

[0046] 2. Process:

[0047] Based on the material components of the above-mentioned color steel phenolic board, the present invention also proposes a method for preparing a lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board, comprising the following steps:

[0048] S1. Feeding and mixing: According to the formula, weigh 45-60 parts of phenolic resin; 5-10 parts of pentane; 15-20 parts of fire retardant; 10-15 parts of filler; 3-5 parts of hexamethylenetetramine; 1-2 parts of silane coupling agent; 0.5-1 part of organotin stabilizer, put into a high-speed mixer, mix at 40-50 ° C for 10-15 minutes to ensure uniform dispersion, pour the mixture into a mold pre-coated with a release agent, and send it to a pre-foaming chamber at 60-80 ° C for 5-8 minutes to form a closed-cell structure;

[0049] S2. Lamination: Lay embossed aluminum foil, non-woven fabric, and color-coated steel sheets in sequence, apply adhesive, and hot-press at 0.8-1.2 MPa and 100-120°C for 15-20 minutes.

[0050] S3. Secondary foaming and curing: The composite board is transferred to a high-pressure foaming furnace and secondary foamed for 30-40 minutes at 120-140°C and 0.5MPa. The final density is controlled at 50-80kg / m 3 ;

[0051] S4. Post-processing and finished products: After cooling, the product is rolled to a fixed length, irregular edges are trimmed, and high-temperature resistant side protection paper is applied. The product is cut into 2m or 4m lengths as required, and packaged and stored after performance testing.

[0052] It should be noted that the thickness of the embossed aluminum foil in step S2 is 0.05-0.1 mm, and the weight of the non-woven fabric is 80-100 g / m 2 The thickness of the color steel plate is 0.3-0.5mm.

[0053] Example 1: In this example, a method for preparing a lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color-coated steel phenolic board comprises the following steps:

[0054] S1. Feeding and mixing: Weigh 50 parts of phenolic resin, 7 parts of pentane, 17 parts of fire retardant (aluminum hydroxide), 12 parts of filler (silicon dioxide), 4 parts of hexamethylenetetramine, 1.5 parts of silane coupling agent, 0.75 parts of organotin stabilizer, and put them into a high-speed mixer; mix at 45 ° C for 12 minutes, speed 800r / min, to ensure uniform dispersion; pour the mixture into a mold pre-coated with a release agent and send it to a 70 ° C pre-foaming chamber for 6 minutes;

[0055] S2. Lamination: Laying embossed aluminum foil (thickness 0.08mm), non-woven fabric (weight 90g / m 2 ), color steel plate (thickness 0.4mm); coated with polyurethane adhesive, hot pressed at 1.0MPa pressure and 110℃ for 18 minutes;

[0056] S3. Secondary foaming and curing: Transfer to a high-pressure foaming furnace and foam for 35 minutes at 130°C and 0.5 MPa, with the density controlled at 65 kg / m 3 ;

[0057] S4. Post-processing and Finishing: After cooling, cut into 1.2m wide pieces, remove edge burrs, apply heat-resistant side protective paper, and cut into 4m lengths.

[0058] Example 2 In this example, the amount of phenolic resin was 45 parts, and the other process parameters were the same as those in Example 1;

[0059] Example 3 In this example, pentane is 5 parts, and other process parameters are the same as those in Example 1;

[0060] Example 4 In this example, the amount of fire retardant is 15 parts, and the other process parameters are the same as those in Example 1;

[0061] Example 5 In this example, the filler is 10 parts, and the other process parameters are the same as those in Example 1;

[0062] The component parameters in Examples 1 to 5 are shown in Table 1:

[0063] Table 1 Component parameters of color steel phenolic board in Example

[0064] Components Example 1 Example 2 Example 3 Example 4 Example 5 Phenolic resin (parts) 50 45 50 50 50 Pentane (parts) 7 7 5 7 7 Fire retardant (parts) 17 17 17 15 17 Filler (parts) 12 12 12 12 10 Hexamethylenetetramine (parts) 4 4 4 4 4 Silane coupling agent (parts) 1.5 1.5 1.5 1.5 1.5 Organic tin stabilizer (parts) 0.75 0.75 0.75 0.75 0.75

[0065] Comparative Example 1 In this embodiment, the phenolic resin is 40 parts (lower than the lower limit of the interval), and the other process parameters are the same as those in Example 1;

[0066] Comparative Example 2 In this embodiment, pentane is 12 parts (higher than the upper limit of the interval), and other process parameters are the same as those in Example 1;

[0067] Comparative Example 3 In this embodiment, the fire retardant is 25 parts (higher than the upper limit of the range), and the other process parameters are the same as those in Example 1;

[0068] Comparative Example 4 In this embodiment, the filler is 5 parts (lower than the lower limit of the interval), and the other process parameters are the same as those in Example 1;

[0069] Comparative Example 5 In this embodiment, the amount of hexamethylenetetramine is 6 parts (higher than the upper limit of the range), and the other process parameters are the same as those in Example 1;

[0070] The component parameters in Comparative Examples 1 to 5 are shown in Table 2:

[0071] Table 2 Component parameters of comparative color steel phenolic board

[0072] Components Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Phenolic resin (parts) 40 50 50 50 50 Pentane (parts) 7 12 7 7 7 Fire retardant (parts) 17 17 25 17 17 Filler (parts) 12 12 12 5 12 Hexamethylenetetramine (parts) 4 4 4 4 6 Silane coupling agent (parts) 1.5 1.5 1.5 1.5 1.5 Organic tin stabilizer (parts) 0.75 0.75 0.75 0.75 0.75

[0073] 3. Performance test:

[0074] Color-coated steel phenolic panels were prepared according to the examples and comparative examples, and the following performance tests were performed:

[0075] a. Density detection:

[0076] a1. Sample preparation: Cut the finished plate into regular cubes (e.g., 100mm x 100mm x 50mm), ensuring the surface is flat and free of damage.

[0077] a2. Mass measurement: Weigh the sample mass (m) using an electronic balance with an accuracy of 0.01g;

[0078] a3. Volume calculation: Use a vernier caliper to measure the length, width, and height of the sample and calculate the volume (V);

[0079] a4. Density calculation: Density (ρ) = mass (m) / volume (V);

[0080] Implementation standard: GB / T6343-2009 "Determination of apparent density of foam plastics and rubber";

[0081] b. Thermal conductivity test:

[0082] b1. Sample preparation: Cut the sheet into 300mm x 300mm x thickness specimens, ensuring the surface is smooth and free of bubbles;

[0083] b2. Instrument calibration: Use a heat flow method thermal conductivity instrument and preheat to a stable state;

[0084] b3. Test process: Place the sample between the hot plate and the cold plate of the instrument, set the temperature difference (e.g., 20°C), and record the heat flow value and temperature gradient;

[0085] Calculate thermal conductivity: Calculate thermal conductivity based on heat flow rate, temperature difference and sample thickness;

[0086] Implementation standard: GB / T10295-2008 "Determination of steady-state thermal resistance and related properties of insulation materials - Heat flow meter method";

[0087] c. Fire rating test:

[0088] c1. Sample preparation: Cut the plates into standard sizes (e.g., 1000mm x 190mm x thickness), with three specimens per group.

[0089] c2. Non-flammability test: Place the sample in a 750°C high-temperature furnace and heat for 30 minutes. Observe for burning, dripping, and mass loss.

[0090] c3. Flammability test: Place the sample vertically, apply flame for 10 seconds, and record the flame spread height and burning time;

[0091] c4. Determination of fire rating: The fire rating is determined based on the combustion time, heat release rate and smoke density;

[0092] Implementation standard: GB8624-2012 "Classification of Combustion Performance of Building Materials and Products";

[0093] d. Peel strength test:

[0094] d1. Sample preparation: Cut the sheet material into 25mm x 150mm test strips. Separate the color-coated steel layer and the foam layer to create a 50mm long interface.

[0095] d2. Test equipment: Use a universal material testing machine with a fixture spacing of 100 mm;

[0096] d3. Test process: Peel the color-coated steel layer and the foam layer at a speed of 50 mm / min, and record the maximum peel force (F).

[0097] Calculation of strength: Peel strength = maximum peel force (F) / sample width (25mm);

[0098] Implementation standard: ASTM D903-98 "Standard Test Method for Peel or Tear Strength of Adhesives";

[0099] e. Compressive strength test:

[0100] e1. Sample Preparation: Cut the plate into a cubic specimen with a size of 50 mm x 50 mm x thickness, with the upper and lower surfaces parallel.

[0101] e2. Testing equipment: Universal material testing machine with a loading rate of 2 mm / min;

[0102] e3. Test procedure: Place the specimen in the center of the platen and continuously apply pressure until the specimen deforms by 10% or ruptures. Record the maximum pressure (F).

[0103] e4. Calculation of strength: compressive strength = maximum pressure (F) / compressive area of specimen (50mm x 50mm);

[0104] Implementation standard: GB / T8813-2020 "Determination of compression properties of rigid foam plastics";

[0105] The performance parameters of the color-coated phenolic panels prepared in Examples 1 to 5 are shown in Table 3:

[0106] Table 3 Comparison of performance data of embodiments

[0107] Performance indicators Example 1 Example 2 Example 3 Example 4 Example 5 <![CDATA[Density (kg / m 3 )]]> 65 72 78 68 75 Thermal conductivity (W / (m·K)) 0.022 0.025 0.028 0.024 0.026 Fire rating A-level A-level A-level A-level A-level Peel strength (N / mm) 3.2 2.8 2.5 3.0 2.7 Compressive strength (MPa) 0.45 0.38 0.32 0.40 0.35

[0108] The performance parameters of the color-coated phenolic panels prepared in Examples 1 to 5 are shown in Table 4:

[0109] Table 4 Comparison of performance data of comparative examples

[0110]

[0111]

[0112] 4. Analysis Conclusions:

[0113] As shown in Table 1 and Table 3, the component parameters of Example 1 are in the middle, the comprehensive performance is the best, and the density is the lowest (65kg / m 3 ), the thermal conductivity is the lowest (0.022), the peel strength is the highest (3.2N / mm), the phenolic resin in Example 2 is reduced, resulting in a decrease in mechanical strength (peel strength 2.8N / mm), the pentane in Example 3 is reduced, the foaming is insufficient, the density and thermal conductivity are increased, the fire retardant in Example 4 is reduced, the fire retardant performance still meets the standard, but the mechanical strength is slightly reduced, the filler in Example 5 is reduced, and the compressive strength is reduced to 0.35MPa;

[0114] As shown in Table 2 and Table 4, the phenolic resin in Comparative Example 1 is insufficient, resulting in a significant decrease in bonding strength (1.8 N / mm), and the fire rating is reduced to Class B. The pentane in Comparative Example 2 is excessive, and the density is too low (58 kg / m 3 ), although the thermal conductivity is low, the compressive strength is insufficient (0.30MPa), and the fire retardant in comparative example 3 is excessive, and the density is increased to 90kg / m3 , the thermal conductivity deteriorates, the filler in Comparative Example 4 is insufficient, the compressive strength is only 0.20MPa, and the edge is easy to crack, and the curing agent in Comparative Example 5 is excessive. Although the peel strength meets the standard, the brittleness of the material increases and the durability decreases;

[0115] In summary, when the material composition is within the range of the embodiment, the density, thermal conductivity, fire resistance, and strength properties are balanced, and the comprehensive performance is optimal. However, components outside the comparative range are prone to cause performance imbalance, resulting in excessively high density, insufficient strength, and reduced fire resistance.

[0116] In addition, in Example 1, 50 parts of phenolic resin provide sufficient matrix strength, 7 parts of pentane ensure a closed-cell structure to optimize thermal conductivity, 17 parts of fire retardant achieve Class A fire protection, 12 parts of filler enhance compressive strength, and the process parameters precisely match the component ratio. The final product is lightweight, highly thermally insulating, strongly adhesive, and durable, making it the best embodiment of the present invention.

[0117] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0118] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A lightweight, heat-insulating, fire-resistant, heat-insulating single-sided color steel phenolic board, characterized in that: It is composed of the following raw materials in parts by weight: Phenolic resin: 45-60 parts; Pentane: 5-10 parts; Fire retardant: 15-20 parts; Filler: 10-15 parts; Hexamethylenetetramine: 3-5 parts; Silane coupling agent: 1-2 parts; Organotin stabilizer: 0.5-1 part.

2. A lightweight, heat-insulating, fire-resistant, heat-insulating single-sided color steel phenolic board according to claim 1, characterized in that: The phenolic resin is prepared by polycondensation reaction of phenol and formaldehyde in the presence of sodium hydroxide as an alkaline catalyst in an environment of 70-90°C.

3. A lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board according to claim 2, characterized in that: The pentane is prepared from petroleum fractions through a fractionation process, and the fractionation temperature range is 36-69°C.

4. A lightweight, heat-insulating, fire-resistant, and heat-insulating single-sided color steel phenolic board according to claim 1, characterized in that: The fire retardant is one of aluminum hydroxide and expanded graphite.

5. A light-weight, heat-insulating, fire-resistant, heat-insulating single-sided color steel phenolic board according to claim 4, characterized in that: The filler is one of silica or glass fiber.

6. A light-weight, heat-insulating, fire-resistant, heat-insulating single-sided color steel phenolic board according to claim 4, characterized in that: The hexamethylenetetramine is prepared by condensation reaction of formaldehyde and ammonia water at 60-80° C. under alkaline conditions.

7. A light-weight, heat-insulating, fire-proof, heat-insulating single-sided color steel phenolic board according to claim 1, characterized in that: The silane coupling agent is prepared by hydrolysis condensation reaction of chlorosilane and alcohols at 80-100° C. under the protection of inert gas.

8. A method for preparing a light-weight, heat-insulating, fire-resistant, and heat-insulating single-sided color-coated steel phenolic board according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1 feeding and mixing: according to the formula weighed phenolic resin: 45-60 parts; Pentane: 5-10 parts; Fire retardant: 15-20 parts; Filler: 10-15 parts; Hexamethylenetetramine: 3-5 parts; Silane coupling agent: 1-2 parts; organotin stabilizer: 0.5-1 parts, put into high-speed mixer, mix at 40-50℃ for 10-15 minutes to ensure uniform dispersion, pour the mixture into the mold pre-coated with release agent, send it to the pre-foaming room at 60-80℃ for foaming for 5-8 minutes to form a closed-cell structure; S2. Lamination: Lay embossed aluminum foil, non-woven fabric, and color-coated steel sheets in sequence, apply adhesive, and hot-press at 0.8-1.2 MPa and 100-120°C for 15-20 minutes. S3. Secondary foaming and curing: The composite board is transferred to a high-pressure foaming furnace and secondary foamed for 30-40 minutes at 120-140°C and 0.5MPa. The final density is controlled at 50-80kg / m 3 ; S4. Post-processing and finished products: After cooling, the product is rolled to a fixed length, irregular edges are trimmed, and high-temperature resistant side protection paper is applied. The product is cut into 2m or 4m lengths as required, and packaged and stored after performance testing.

9. The method for preparing a light-weight, heat-insulating, fire-resistant, and heat-insulating single-sided color-coated steel phenolic board according to claim 8, characterized in that: The thickness of the embossed aluminum foil in step S2 is 0.05-0.1 mm, and the weight of the non-woven fabric is 80-100 g / m 2 The thickness of the color steel plate is 0.3-0.5mm.

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