Preparation process of color stone veneer heat preservation and decoration integrated plate

Abstract

The invention relates to the technical field of building materials, and particularly discloses a preparation process of a color stone facing thermal insulation and decoration integrated board, which comprises the following steps: step 1, preparing a color stone raw material which is basalt, and crushing and screening basalt serving as a raw material to obtain basalt particles with the particle size of 1-5mm; in the high-temperature sintering process, basalt particles are placed in a resistance-type sintering furnace and sintered at the temperature of 1100-1300 DEG C, inorganic mineral pigments such as ferric oxide series pigments, chromic oxide series pigments and cobalt oxide series pigments are added, the pigments are evenly added into the high-temperature sintering furnace through an automatic feeding device, and under the high-temperature effect, the inorganic mineral pigments are added into the resistance-type sintering furnace to be sintered at the temperature of 1100-1300 DEG C; the pigment and the basalt particles are fully fused to form the colored stone with uniformly colored surface, the coloring effect is stable, the colored stone is not easy to fade, and the attractive decorative effect can be kept for a long time.

Description

Technical Field

[0001] The invention belongs to the technical field of building materials, and particularly relates to a preparation process of a colored stone facing thermal insulation and decorative integrated board. Background Art

[0002] With the continuous development of the construction industry, the requirements for the functionality and decorative properties of building exterior wall materials are increasing. Traditional building exterior wall materials often have a single function, focusing on either thermal insulation performance or decorative effects, and it is difficult to simultaneously meet the building's multiple needs in terms of thermal insulation, decoration, and construction convenience.

[0003] Colored stone, as a natural decorative material, has the advantages of rich colors, good texture and strong durability. Applying it to the decoration of building exterior walls can greatly improve the aesthetics of the building. However, in the coloring process of colored stone, the traditional method uses immersion to color the colored stone. The length of the immersion time has a great influence on the coloring effect. If the immersion time is inconsistent, it will lead to different color depths. In addition, the concentration of the immersion solution may change during the immersion process due to various factors, such as insufficient solution stirring, change of solution concentration in some areas due to evaporation or absorption, etc., which will also cause uneven coloring of the colored stone. Therefore, a preparation process of a colored stone facing thermal insulation decorative integrated board is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a preparation process of a colored stone veneer thermal insulation decorative integrated board to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A preparation process of a colored stone veneer thermal insulation decorative integrated board, comprising:

[0007] Step 1: preparing the colored stone raw material, wherein the colored stone raw material is basalt, and using the basalt as the raw material, after crushing and screening, obtaining basalt particles with a particle size of 1 to 5 mm;

[0008] Step 2: The crushed and screened basalt raw materials are subjected to high-temperature sintering and coloring. The basalt particles are placed in a high-temperature sintering furnace and sintered at 1100-1300℃. Inorganic mineral pigments are added during the sintering process to fully integrate the pigments with the basalt particles to form a colored stone with a uniformly colored surface.

[0009] Step 3: preparing a thermal insulation substrate, cutting the thermal insulation material into a predetermined size as the thermal insulation substrate of the integrated board, wherein the thermal insulation material includes a polystyrene foam board, a rock wool board, and a polyurethane foam board;

[0010] Step 4: Compounding the thermal insulation substrate material with a finishing layer, mixing the sintered colored stone with a binder, and evenly coating the mixture on the surface of the thermal insulation substrate to form a colored stone finishing layer with a thickness of 3 to 8 mm, wherein the binder includes an epoxy resin and a polymer cement-based binder;

[0011] Step 5: Curing and shaping the composite material, placing the composite board in a constant temperature and humidity environment for curing for 24 to 72 hours, the curing temperature is 20-40°C, and the curing humidity is 50% to 70%. After curing, a colored stone veneer decorative insulation integrated board can be obtained.

[0012] Preferably, in step one, the crushing machine used is a combined crushing of a jaw crusher and a cone crusher, the jaw crusher is used for preliminary coarse crushing, and the cone crusher is used for fine crushing, so as to ensure uniform crushing of the basalt raw material; the screening process uses a multi-layer vibrating screen to obtain basalt particles with a particle size of 1 to 5 mm through screens with different apertures, and after screening, the particles that do not meet the particle size requirements are subjected to secondary crushing.

[0013] Preferably, in step 2, the high-temperature sintering furnace adopts a resistance sintering furnace, and the internal temperature of the resistance sintering furnace is less than 10°C; the inorganic mineral pigments include iron oxide pigments, chromium oxide pigments and cobalt oxide pigments. During the sintering process, the addition amount of inorganic mineral pigments is 1% to 5% of the mass of the basalt particles, and the pigments are evenly added to the high-temperature sintering furnace through an automatic feeding device.

[0014] Preferably, in step 2, the sintering process is divided into a heating stage, a heat preservation stage and a cooling stage; in the heating stage, the basalt particles are heated from room temperature to 1100-1300°C at a rate of 5-10°C / min; in the heat preservation stage, the target temperature is maintained for 30-60 minutes to allow the pigment and the basalt particles to fully fuse; in the cooling stage, a combination of natural cooling and forced air cooling is adopted, and after natural cooling to 800°C, the forced air cooling device is turned on to reduce the temperature to room temperature.

[0015] Preferably, in step three, the insulation material cutting machine adopts a CNC cutting machine, which performs precise cutting according to preset size parameters, and the size error of the insulation substrate after cutting is controlled within ±1mm; the surface of the insulation substrate after cutting is polished to remove burrs and uneven parts to improve the bonding strength with the finishing layer.

[0016] Preferably, in step four, the mass ratio of the epoxy resin to the polymer cement-based binder is 1:1-3:1; when the colored stone and the binder are mixed, a stirrer is used for stirring at a stirring speed of 50-100 r / min and a stirring time of 10 to 20 minutes to ensure that the colored stone and the binder are fully mixed; the coating process adopts a spraying or scraping method to ensure that the thickness of the colored stone finishing layer is uniform, and during the coating process, the thickness of the colored stone finishing layer is monitored in real time by a thickness detection device, and timely adjustments are made to areas that do not meet the thickness requirements.

[0017] Preferably, in step four, after the coating is completed, the surface of the colored stone finishing layer is embossed, and various patterns and textures are pressed out on the surface of the colored stone finishing layer by an embossing mold to increase the beauty and decorativeness of the finishing layer; at the same time, after the embossing treatment, the surface of the colored stone finishing layer is cleaned to remove impurities and excess adhesive remaining on the surface.

[0018] Preferably, in step five, the constant temperature and humidity environment adopts a constant temperature and humidity chamber, and the constant temperature and humidity chamber is provided with a temperature sensor and a humidity sensor to monitor and adjust the temperature and humidity in the chamber in real time; during the curing process, the quality of the composite board is regularly inspected, and the inspection items include the bonding strength between the colored stone facing layer and the thermal insulation substrate, the hardness of the colored stone facing layer, etc. If the inspection results do not meet the requirements, the curing conditions are adjusted in time or rework is performed. During the curing process, the quality of the composite board is inspected once every 12 hours; the bonding strength test adopts the pull-out test method, and the bonding strength is required to be not less than 0.5MPa; the hardness test is measured using a Shore hardness tester, and the hardness of the colored stone facing layer is required to be not less than 70HD.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] During the high-temperature sintering process, the present invention places basalt particles in a resistance sintering furnace and performs a sintering treatment at 1100-1300°C. Inorganic mineral pigments such as iron oxide pigments, chromium oxide pigments, and cobalt oxide pigments are then added. The pigments are evenly added to the high-temperature sintering furnace through an automatic feeding device. Under the action of high temperature, the pigments fully fuse with the basalt particles to form a colored stone with a uniformly colored surface. The coloring effect is stable and not easy to fade, and the beautiful decorative effect can be maintained for a long time.

[0021] The sintering process is divided into a heating stage, a heat preservation stage and a cooling stage. In the heating stage, the basalt particles are heated from room temperature to the target temperature at a rate of 5-10℃ / min, avoiding cracks caused by excessive internal stress of the particles due to rapid heating; the heat preservation stage is maintained at the target temperature for 30 to 60 minutes to ensure that the pigment and the basalt particles are fully integrated to form a stable crystal structure and coloring effect; the cooling stage adopts a combination of natural cooling and forced air cooling. After natural cooling to 800℃, the forced air cooling device is turned on to reduce the temperature to room temperature. This scientific cooling method can avoid the internal stress of the colored stone due to rapid cooling, which leads to cracking and other problems, thereby improving the quality and yield of the colored stone. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of the steps of the present invention. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 creative efforts are within the scope of protection of the present invention.

[0024] A preparation process of a colored stone veneer thermal insulation decorative integrated board, comprising:

[0025] Step 1: preparing the colored stone raw material, wherein the colored stone raw material is basalt, and using the basalt as the raw material, after crushing and screening, obtaining basalt particles with a particle size of 1 to 5 mm;

[0026] The present invention further specifically details that in the step 1, the crushing machine used is a jaw crusher and a cone crusher combined crushing, the jaw crusher is used for preliminary coarse crushing, and the cone crusher is used for fine crushing to ensure uniform crushing of the basalt raw material; the screening process uses a multi-layer vibrating screen to obtain basalt particles with a particle size of 1 to 5 mm through screens of different apertures, and after screening, the particles that do not meet the particle size requirements are subjected to secondary crushing;

[0027] Step 2: The crushed and screened basalt raw materials are subjected to high-temperature sintering and coloring. The basalt particles are placed in a high-temperature sintering furnace and sintered at 1100-1300℃. Inorganic mineral pigments are added during the sintering process to fully integrate the pigments with the basalt particles to form a colored stone with a uniformly colored surface.

[0028] The present invention further specifically details that in step 2, the high-temperature sintering furnace is a resistance sintering furnace, and the internal temperature of the resistance sintering furnace is less than 10°C; the inorganic mineral pigments include iron oxide pigments, chromium oxide pigments, and cobalt oxide pigments. During the sintering process, the amount of inorganic mineral pigments added is 1% to 5% of the mass of the basalt particles, and the pigments are evenly added to the high-temperature sintering furnace through an automatic feeding device;

[0029] The present invention further specifically details that in step 2, the sintering process is divided into a heating stage, a heat preservation stage, and a cooling stage; in the heating stage, the basalt particles are heated from room temperature to 1100-1300°C at a rate of 5-10°C / min; in the heat preservation stage, the target temperature is maintained for 30-60 minutes to allow the pigment and the basalt particles to fully fuse; in the cooling stage, a combination of natural cooling and forced air cooling is used, and after natural cooling to 800°C, the forced air cooling device is turned on to reduce the temperature to room temperature;

[0030] Step 3: preparing a thermal insulation substrate, cutting the thermal insulation material into a predetermined size as the thermal insulation substrate of the integrated board, wherein the thermal insulation material includes a polystyrene foam board, a rock wool board, and a polyurethane foam board;

[0031] The present invention further specifically details that in step three, the thermal insulation material cutting machine uses a CNC cutting machine to perform precise cutting according to preset dimensional parameters, and the dimensional error of the thermal insulation substrate after cutting is controlled within ±1 mm; the surface of the thermal insulation substrate after cutting is polished to remove burrs and uneven parts to improve the bonding strength with the finishing layer;

[0032] Step 4: Compounding the thermal insulation substrate material with a finishing layer, mixing the sintered colored stone with a binder, and evenly coating the mixture on the surface of the thermal insulation substrate to form a colored stone finishing layer with a thickness of 3 to 8 mm, wherein the binder includes an epoxy resin and a polymer cement-based binder;

[0033] The present invention is further specifically described in detail. In the step 4, the mass ratio of the epoxy resin and the polymer cement-based binder is 1:1-3:1; when the colored stone and the binder are mixed, a stirrer is used for stirring at a stirring speed of 50-100 r / min and a stirring time of 10 to 20 minutes to fully mix the colored stone and the binder; the coating process adopts a spraying or scraping method to ensure that the thickness of the colored stone decorative layer is uniform, and during the coating process, the thickness of the colored stone decorative layer is monitored in real time by a thickness detection device, and the area that does not meet the thickness requirement is adjusted in time. In the step 4, after the coating is completed, the surface of the colored stone decorative layer is embossed, and various patterns and textures are pressed out on the surface of the colored stone decorative layer by an embossing mold to increase the beauty and decorativeness of the decorative layer; at the same time, after the embossing treatment, the surface of the colored stone decorative layer is cleaned to remove impurities and excess binder remaining on the surface;

[0034] Step 5: Curing and shaping the composite material, placing the composite board in a constant temperature and humidity environment for curing for 24 to 72 hours, wherein the curing temperature is 20-40°C and the curing humidity is 50% to 70%. After curing, the colored stone veneer decorative insulation integrated board can be obtained;

[0035] The present invention is further specifically described in detail. In step 5, the constant temperature and humidity environment adopts a constant temperature and humidity box, and the constant temperature and humidity box is provided with a temperature sensor and a humidity sensor to monitor and adjust the temperature and humidity in the box in real time; during the curing process, the quality of the composite board is regularly inspected, and the inspection items include the bonding strength between the colored stone facing layer and the thermal insulation substrate, the hardness of the colored stone facing layer, etc. If the inspection results do not meet the requirements, the curing conditions are adjusted in time or rework is performed. During the curing process, the quality of the composite board is inspected once every 12 hours; the bonding strength test adopts the pull-out test method, and the bonding strength is required to be not less than 0.5MPa; the hardness test adopts the Shore hardness tester to measure, and the hardness of the colored stone facing layer is required to be not less than 70HD;

[0036] From the above, we can see that the principles of preparing colored stone raw materials are as follows:

[0037] During the preparation of colored stone raw materials, basalt is used as raw material and a jaw crusher and cone crusher are used for combined crushing. The jaw crusher uses the squeezing action between its movable jaw and fixed jaw to perform preliminary coarse crushing on the basalt, breaking large pieces of basalt into smaller particles. The cone crusher uses the grinding and squeezing action between the conical head and the bowl-shaped liner to further crush the coarsely crushed basalt particles, ensuring uniform crushing of the basalt raw materials.

[0038] Subsequently, a multi-layer vibrating screen is used for screening. Screens of different apertures classify the crushed basalt particles according to their particle size, thereby obtaining basalt particles with a particle size of 1 to 5 mm. Particles that do not meet the particle size requirements are subjected to secondary crushing to ensure the quality and particle size uniformity of the colored stone raw materials, providing a suitable raw material basis for subsequent high-temperature sintering and coloring.

[0039] The principle of high temperature sintering coloring is as follows:

[0040] The crushed and screened basalt particles are placed in a resistance sintering furnace for high-temperature sintering and coloring. The resistance sintering furnace converts electrical energy into thermal energy through resistance heating elements, making the temperature inside the furnace reach 1100-1300℃. Under this high temperature environment, the crystal structure inside the basalt particles undergoes physical and chemical changes, and the particles gradually fuse to form an overall structure with a certain strength.

[0041] At the same time, during the sintering process, inorganic mineral pigments such as iron oxide pigments, chromium oxide pigments and cobalt oxide pigments are evenly added through an automatic feeding device, with the addition amount being 1% to 5% of the mass of the basalt particles. Under the action of high temperature, the pigment molecules undergo chemical reactions and physical adsorption with the molecules on the surface of the basalt particles. The pigments gradually penetrate and are evenly distributed on the surface of the basalt particles, fully integrating with the basalt particles, thus forming a colored stone with a uniformly colored surface.

[0042] The sintering process is divided into a heating stage, a heat preservation stage, and a cooling stage. In the heating stage, the basalt particles are heated from room temperature to 1100-1300℃ at a rate of 5-10℃ / min to gradually adapt the basalt particles to the high temperature environment and avoid cracks caused by excessive internal stress of the particles due to excessive heating. In the heat preservation stage, the target temperature is maintained for 30-60 minutes to ensure that the pigment and the basalt particles are fully integrated to form a stable coloring effect and crystal structure. In the cooling stage, a combination of natural cooling and forced air cooling is adopted. After natural cooling to 800℃, the forced air cooling device is turned on to reduce the temperature to room temperature. This cooling method can avoid the internal stress of the colored stone due to excessive cooling, which may lead to cracking and other problems.

[0043] The principle of thermal insulation substrate preparation is as follows:

[0044] During the preparation of the insulation substrate, a CNC cutting machine is used to cut insulation materials such as polystyrene foam boards, rock wool boards, and polyurethane foam boards. The CNC cutting machine cuts the insulation materials into predetermined sizes based on preset dimensional parameters through precise mechanical movement and cutting tools. The dimensional error of the insulation substrate after cutting is controlled within ±1mm, ensuring the dimensional accuracy and assembly quality of the integrated board.

[0045] The surface of the thermal insulation substrate after cutting is polished to remove burrs and uneven parts. Polishing can increase the roughness and flatness of the surface of the thermal insulation substrate, improve the bonding strength with the finishing layer, and enable the colored stone finishing layer to better adhere to the surface of the thermal insulation substrate to form a solid overall structure.

[0046] The principle of composite finishing layer is as follows:

[0047] The sintered colored stone is mixed with a binder, the binder includes epoxy resin and polymer cement-based binder, the mass ratio of epoxy resin and polymer cement-based binder is 1:1-3:1, and a mixer is used for stirring at a stirring speed of 50-100r / min and a stirring time of 10-20 minutes to fully mix the colored stone and the binder. The epoxy resin has good adhesion and chemical corrosion resistance, and the polymer cement-based binder has high strength and durability. The mixed use of the two can give full play to their respective advantages and improve the bonding strength between the colored stone and the thermal insulation substrate;

[0048] After mixing evenly, the mixture of colored stone and binder is evenly applied to the surface of the thermal insulation substrate by spraying or scraping to form a colored stone facing layer with a thickness of 3 to 8 mm. During the coating process, the thickness of the colored stone facing layer is monitored in real time by a thickness detection device, and areas that do not meet the thickness requirements are adjusted in time to ensure that the thickness of the colored stone facing layer is uniform and consistent, thereby ensuring the decorative effect and performance stability of the integrated board;

[0049] After coating, the surface of the colored stone facing layer is embossed. Various patterns and textures are pressed out on the surface of the colored stone facing layer through an embossing mold. The embossing treatment can increase the beauty and decorativeness of the facing layer, making the integrated board have a richer appearance. At the same time, after the embossing treatment, the surface of the colored stone facing layer is cleaned to remove residual impurities and excess adhesives on the surface, thereby improving the quality and neatness of the facing layer.

[0050] The principles of curing and shaping are as follows:

[0051] The composite board is placed in a constant temperature and humidity chamber for curing and shaping. The constant temperature and humidity chamber is equipped with a temperature sensor and a humidity sensor to monitor and adjust the temperature and humidity in the chamber in real time. The curing temperature is controlled at 20-40°C and the curing humidity is controlled at 50% to 70%. In this suitable temperature and humidity environment, the chemical components in the binder react and gradually solidify, firmly combining the colored stone and the thermal insulation substrate to form a colored stone veneer thermal insulation decorative integrated board with high strength and stability.

[0052] During the curing process, the composite board is quality tested every 12 hours. The test items include the bonding strength between the colored stone facing layer and the thermal insulation substrate, the hardness of the colored stone facing layer, etc. The bonding strength test adopts the pull-out test method, which requires the bonding strength to be no less than 0.5MPa to ensure that there is sufficient adhesion between the colored stone facing layer and the thermal insulation substrate, and there will be no delamination or falling off during use. The hardness test is measured by Shore hardness tester, which requires the hardness of the colored stone facing layer to be no less than 70HD to ensure that the facing layer has sufficient wear resistance and durability. If the test results do not meet the requirements, the curing conditions shall be adjusted in time or rework shall be carried out to ensure that the quality of the integrated board meets the standard requirements. After 24 to 72 hours of curing, the colored stone facing decorative thermal insulation integrated board can be obtained;

[0053] Through the configuration of the above technical solution, the present invention adopts a combined crushing method of a jaw crusher and a cone crusher. The jaw crusher performs preliminary coarse crushing, and the cone crusher performs fine crushing. This graded crushing method can ensure uniform crushing of the basalt raw material, provide a high-quality raw material basis for subsequent processing, and avoid affecting the overall performance of the product due to uneven raw material particle size.

[0054] The screening process uses a multi-layer vibrating screen to accurately obtain basalt particles with a particle size of 1 to 5 mm through screens of different apertures. Particles that do not meet the particle size requirements are crushed twice, further ensuring the accuracy and consistency of the particle size of the colored stone raw materials, which is beneficial for subsequent high-temperature sintering and coloring as well as mixing with the binder, thereby improving the quality of the colored stone finishing layer.

[0055] During the high-temperature sintering process, basalt particles are placed in a resistance sintering furnace and sintered at 1100-1300°C. Inorganic mineral pigments such as iron oxide pigments, chromium oxide pigments, and cobalt oxide pigments are added. The pigments are evenly added to the high-temperature sintering furnace through an automatic feeding device. Under the action of high temperature, the pigments and basalt particles are fully integrated to form a colored stone with a uniform surface color. The coloring effect is stable and not easy to fade, and can maintain a beautiful decorative effect for a long time.

[0056] The sintering process is divided into heating, holding, and cooling stages. During the heating stage, the basalt particles are heated from room temperature to the target temperature at a rate of 5-10°C / min, avoiding cracks caused by excessive internal stress in the particles due to rapid heating. During the holding stage, the target temperature is maintained for 30-60 minutes to ensure that the pigment and basalt particles are fully integrated, forming a stable crystal structure and coloring effect. During the cooling stage, a combination of natural cooling and forced air cooling is used. After natural cooling to 800°C, the forced air cooling device is turned on to reduce the temperature to room temperature. This scientific cooling method can avoid the internal stress caused by rapid cooling of the colored stone, which may lead to cracking and other problems, thereby improving the quality and yield of the colored stone.

[0057] The thermal insulation material is cut using a CNC cutting machine, which performs precise cutting according to preset dimensional parameters. The dimensional error of the thermal insulation substrate after cutting is controlled within ±1mm, ensuring the dimensional accuracy of the integrated board, facilitating installation and use, and improving the construction efficiency and quality of the building project.

[0058] The surface of the thermal insulation substrate after cutting is polished to remove burrs and uneven parts, thereby increasing the roughness and flatness of the surface of the thermal insulation substrate and improving the bonding strength with the finishing layer, so that the colored stone finishing layer can better adhere to the surface of the thermal insulation substrate, forming a solid overall structure and extending the service life of the integrated board;

[0059] When mixing the sintered colored stone with the binder (epoxy resin and polymer cement-based binder, mass ratio of 1:1-3:1), a mixer is used for stirring at a speed of 50-100 r / min and a stirring time of 10-20 minutes to ensure that the colored stone and the binder are fully mixed and uniform, thereby ensuring the bonding performance and overall quality of the colored stone finishing layer;

[0060] The coating process adopts spraying or scraping methods, and the thickness of the colored stone facing layer is monitored in real time by a thickness detection device. Areas that do not meet the thickness requirements are adjusted in time to ensure that the thickness of the colored stone facing layer is uniform, thus ensuring the decorative effect and performance stability of the integrated board, and avoiding appearance defects and performance differences caused by uneven thickness of the facing layer.

[0061] After the colored stone facing layer is coated, it is embossed. Various patterns and textures are pressed out on the surface of the colored stone facing layer through an embossing mold, which increases the beauty and decorativeness of the facing layer, making the integrated board have a richer appearance effect and can meet different architectural styles and decoration requirements. At the same time, after the embossing treatment, the surface of the colored stone facing layer is cleaned to remove residual impurities and excess adhesives on the surface, thereby improving the quality and appearance of the facing layer.

[0062] The composite board is placed in a constant temperature and humidity chamber for curing and shaping. The constant temperature and humidity chamber is equipped with a temperature sensor and a humidity sensor to monitor and adjust the temperature and humidity in the chamber in real time. The curing temperature is controlled at 20-40°C and the curing humidity is controlled at 50% to 70%. In this suitable temperature and humidity environment, the chemical components in the adhesive react chemically and gradually solidify, firmly combining the colored stone and the insulation substrate to form a colored stone veneer insulation decorative integrated board with high strength and stability. During the curing process, the composite board is quality tested every 12 hours. The test items include the colored stone veneer layer. The bonding strength with the thermal insulation substrate, the hardness of the colored stone facing layer, etc. The bonding strength test adopts the pull-out test method, and the bonding strength is required to be no less than 0.5MPa to ensure that there is sufficient adhesion between the colored stone facing layer and the thermal insulation substrate, and there will be no delamination or falling off during use; the hardness test is measured using a Shore hardness tester, and the hardness of the colored stone facing layer is required to be no less than 70HD to ensure that the facing layer has sufficient wear resistance and durability. If the test results do not meet the requirements, the curing conditions are adjusted in time or rework is carried out to ensure that the quality of the integrated board meets the standard requirements and improve the reliability and stability of the product.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A preparation process for a colored stone facing thermal insulation decorative integrated board, characterized in that: include: Step 1: preparing the colored stone raw material, wherein the colored stone raw material is basalt, and using the basalt as the raw material, after crushing and screening, obtaining basalt particles with a particle size of 1 to 5 mm; Step 2: The crushed and screened basalt raw materials are subjected to high-temperature sintering and coloring. The basalt particles are placed in a high-temperature sintering furnace and sintered at 1100-1300°C. Inorganic mineral pigments are added during the sintering process to form a colored stone with a uniformly colored surface. Step 3: preparing a thermal insulation substrate, cutting the thermal insulation material into a predetermined size as the thermal insulation substrate of the integrated board, wherein the thermal insulation material includes a polystyrene foam board, a rock wool board, and a polyurethane foam board; Step 4: Compound the thermal insulation base material with a finishing layer, mix the sintered colored stone with a binder, and evenly apply it on the surface of the thermal insulation base material to form a colored stone finishing layer with a thickness of 3 to 8 mm; Step 5: Curing and shaping the composite material, placing the composite board in a constant temperature and humidity environment for curing for 24 to 72 hours, the curing temperature is 20-40°C, and the curing humidity is 50% to 70%. After curing, a colored stone veneer decorative insulation integrated board can be obtained.

2. The process for preparing a thermal insulation and decorative integrated board with a colored stone finish according to claim 1, characterized in that: In the step 1, the crushing machine used is a jaw crusher and a cone crusher combined crushing, the jaw crusher is used for preliminary coarse crushing, and the cone crusher is used for fine crushing.

3. The process for preparing the thermal insulation and decorative integrated board with colored stone facing according to claim 1, characterized in that: In the step 2, the high-temperature sintering furnace is a resistance sintering furnace, and the internal temperature of the resistance sintering furnace is less than 10° C.; the inorganic mineral pigments include iron oxide pigments, chromium oxide pigments, and cobalt oxide pigments.

4. The process for preparing the thermal insulation and decorative integrated board with colored stone veneer according to claim 1, characterized in that: In the step 2, the sintering process is divided into a heating stage, a heat preservation stage and a cooling stage.

5. The process for preparing the thermal insulation and decorative integrated board with colored stone facing according to claim 1, characterized in that: In the step three, the thermal insulation material cutting machine adopts a CNC cutting machine.

6. The process for preparing the thermal insulation and decorative integrated board with colored stone facing according to claim 1, characterized in that: In the step 4, the mass ratio of the epoxy resin to the polymer cement-based binder is 1:1-3:

1.

7. The process for preparing the thermal insulation and decorative integrated board with colored stone facing according to claim 1, characterized in that: In step four, after the coating is completed, the surface of the colored stone finishing layer is embossed, and various patterns and textures are pressed out on the surface of the colored stone finishing layer by an embossing mold; at the same time, after the embossing treatment, the surface of the colored stone finishing layer is cleaned to remove impurities and excess adhesive remaining on the surface.

8. The process for preparing the thermal insulation and decorative integrated board with colored stone facing according to claim 1, characterized in that: In step five, the constant temperature and humidity environment uses a constant temperature and humidity box, and a temperature sensor and a humidity sensor are provided in the constant temperature and humidity box.

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