Clean plate core material and production system and production method thereof

Abstract

The invention discloses a clean plate core material and a production system and method thereof, and belongs to the technical field of clean plate core materials. The production system of the clean plate core material comprises a batching mechanism, a mixing mechanism, a pouring mechanism, a forming mechanism, a cutting mechanism, a drying mechanism, a trimming mechanism and a packaging mechanism which are sequentially connected, the batching mechanism is connected with the mixing mechanism through a feeding part, and the pouring mechanism is arranged below the mixing mechanism; the mixing mechanism and the pouring mechanism are arranged above the forming mechanism, the cutting mechanism and the drying mechanism are sequentially arranged at the tail end of the forming mechanism, and the trimming mechanism and the packaging mechanism are sequentially arranged at the rear end of the drying mechanism. Wherein two baffles are continuously arranged on the two sides of the forming mechanism, and the clean plate core material is formed between the forming mechanism and the two baffles. Continuous and standardized production can be realized, the efficiency is high, and the prepared clean plate core material has excellent strength, flatness, combustion grade and adhesive property.

Description

Technical Field

[0001] The present application relates to a clean board core material and a production system and a production method thereof, belonging to the technical field of clean board core materials. Background Art

[0002] Clean board, also known as purification board, is a composite board made of color-coated board, stainless steel and other materials as the surface material. Clean board has unique dust-proof, anti-static, antibacterial and other effects. Among them, rock wool clean board is widely used in electronics, pharmaceuticals, food, biology, aerospace, precision instrument manufacturing and scientific research and other purification engineering fields with strict requirements on indoor environment.

[0003] At present, the common clean board core materials are the composite of glass magnesium board and rock wool board, and the composite of oxysulfur magnesium board and rock wool board. Among them, the glass magnesium board is a non-combustible material, but it needs to be glued to both sides of the rock wool board, which leads to VOC in the production process. S The emissions pollute the environment and there is a risk of aging in the later stage; the magnesium oxysulfide core material is two pieces of magnesium oxysulfide plates with single-sided grooves bonded together with glue, and its combustion grade does not reach Class A. In addition, the current clean board industry also has the following problems: (1) artificial synthesis, slow production speed, difficult quality control, and high production cost; (2) the overall strength of the plate is low, especially the top plate is almost scrapped after the construction is completed; (3) there is a greater risk of deformation, so it is impossible to produce plates that are too long. Based on this, the present invention designs a clean board core material and its production system and production method to solve the above problems. Summary of the invention

[0004] In order to solve the above problems, a clean board core material and a production system and production method thereof are provided, which can realize continuous and standardized production with high efficiency. The prepared clean board core material has excellent strength, flatness, combustion grade and bonding performance, which helps to improve its service life.

[0005] The present invention provides the following technical solutions:

[0006] According to one aspect of the present application, a production system for clean board core materials is provided, comprising a batching mechanism, a mixing mechanism, a pouring mechanism, a molding mechanism, a cutting mechanism, a drying mechanism, a trimming mechanism and a packaging mechanism connected in sequence, wherein the batching mechanism is connected to the mixing mechanism via a feeding portion, the pouring mechanism is arranged below the mixing mechanism, the mixing mechanism and the pouring mechanism are arranged above the molding mechanism, the cutting mechanism and the drying mechanism are arranged in sequence at the end of the molding mechanism, and the trimming mechanism and the packaging mechanism are arranged in sequence at the rear end of the drying mechanism; wherein two baffles are continuously arranged on both sides of the molding mechanism, and the clean board core material is molded between the molding mechanism and the two baffles.

[0007] Optionally, the batching mechanism includes a raw material bin, a top bin and a loading portion, and the raw material bin and the top bin are connected via the loading portion.

[0008] Optionally, the forming mechanism includes a conveyor belt and a motor, the motor drives the conveyor belt to rotate, and the baffles are located on both sides of the conveyor belt.

[0009] Optionally, a reeling mechanism is provided at the front end of the mixing mechanism, the mixing mechanism includes a first mixing mechanism and a second mixing mechanism, a rock wool bin, a telescopic rod and a pressure roller connected in sequence from top to bottom are provided between the first mixing mechanism and the second mixing mechanism, and a rock wool belt is provided in the rock wool bin.

[0010] Optionally, a stirrer and a vibrator are provided in the mixing mechanism;

[0011] The unwinding mechanism is an unwinding roller;

[0012] The cutting mechanism is any one of a laser cutter, a plasma cutting mechanism, and a flame cutting mechanism;

[0013] The drying mechanism is a burner hot air furnace system;

[0014] The trimming mechanism is a circular blade with the same shape as the edge of the clean board core material;

[0015] The packaging mechanism is an automatic packaging machine.

[0016] According to another aspect of the present application, a method for producing a clean plate is provided, using the above-mentioned clean plate production system, comprising the following steps:

[0017] (1) The gypsum powder and solid additives in the raw material bin are sequentially fed into the top silo through the feeding part, and after being mixed evenly, dry materials are obtained;

[0018] (2) feeding the dry material in the top silo into the first mixing mechanism and the second mixing mechanism respectively through the feeding part, adding water and liquid additives, and mixing them evenly to obtain the first wet material and the second wet material;

[0019] (3) As the conveyor belt rotates, the first glass fiber mesh cloth is unwound through the first unwinding mechanism arranged along the production direction and laid between the baffles on both sides of the conveyor belt, and at the same time, the first wet material in the first mixing mechanism is poured on the first glass fiber mesh cloth, so that the first glass fiber mesh cloth is embedded in the first wet material;

[0020] (4) As the conveyor belt continues to rotate, the rock wool belt in the rock wool bin is laid on the first wet material, and the telescopic rod drives the pressing roller to move downward to flatten the rock wool belt;

[0021] (5) As the conveyor belt continues to rotate, the second glass fiber mesh cloth is unwound through the second unwinding mechanism arranged along the production direction and laid on the rock wool belt, and at the same time, the second wet material in the second mixing mechanism is poured on the second glass fiber mesh cloth, so that the second glass fiber mesh cloth is embedded in the second wet material to obtain a semi-finished product;

[0022] (6) The semi-finished products are cut according to the set size and sent to the drying mechanism for drying. They then enter the trimming mechanism and the packaging mechanism in turn. The finished products can be packaged and shipped out of the factory.

[0023] Optionally, based on the weight of gypsum powder, the solid additive includes 0.1-0.5% modified starch, 2-5% wood fiber, 3-6% modified dolomite powder, 20-30% fly ash, 0.3-0.8% calcium lignin sulfonate and 0.05-0.1% vegetable protein retarder;

[0024] Based on the weight of water, the liquid additive includes 2-4% polyvinyl alcohol emulsion and 3-5% organic silicon waterproofing agent.

[0025] Optionally, the method for preparing the modified dolomite powder comprises the following steps:

[0026] S1. Evenly mix anhydrous ethanol and deionized water in a volume ratio of (8-12):1, then add a titanate coupling agent and ultrasonically vibrate for 10-20 minutes to obtain a pre-hydrolyzed solution;

[0027] S2. Add dolomite powder to anhydrous ethanol and deionized water in a volume ratio of (8-12):1, stir and heat to 70-80°C, then dropwise add a pre-hydrolysis solution containing 1-5wt% titanate coupling agent, continue stirring until the reaction is completed, filter and dry to obtain modified dolomite powder.

[0028] Optionally, the thickness of the rock wool belt is 3-6 cm.

[0029] According to another aspect of the present application, a clean board core material is provided, which is prepared by any of the above-mentioned production methods for clean board core materials, and the surface flatness of the clean board core material is ±40 wires;

[0030] The clean board core material comprises a rock wool layer and a first gypsum layer and a second gypsum layer respectively arranged on both sides of the rock wool layer;

[0031] A first glass fiber mesh cloth and a second glass fiber mesh cloth are respectively arranged in the first gypsum layer and the second gypsum layer;

[0032] The rock wool layer is composed of a plurality of staggered and interlocked rock wool belts.

[0033] The beneficial effects of this application include but are not limited to:

[0034] 1. The production system of the clean board core material of the present application can directly pour the gypsum-based material on the A-class thermal insulation material to obtain the required clean board core material; the production system uses an automated process, from batching, mixing, molding to drying, trimming and packaging, and each link is closely connected to achieve continuous and standardized production, while reducing manual operation and waiting time, and significantly improving production efficiency.

[0035] 2. The production method of the clean board core material of the present application is that the length of the board can be cut to a fixed length, and the clean board core material of a specific size can be produced according to needs, which reduces the error of manual operation and improves the production efficiency and the stability of product quality; in addition, there is no need to bond the layers with glue, and the production process is energy-saving and environmentally friendly. Compared with the existing adhesive clean board core material, the clean board core material produced by the production method of the present application is not easy to be damaged, and the overall strength and flatness are also higher.

[0036] 3. The production method of the clean board core material of the present application uses gypsum powder as raw material, and fly ash and modified dolomite powder are mixed as fine particles to fill the gaps in the internal structure with gypsum as the skeleton, thereby improving the density of the gypsum layer material, thereby making the strength of the clean board core material higher, and at the same time being able to adsorb the free sodium, potassium, and chloride ions in the gypsum into its own structure, thereby improving the bonding performance of the clean board core material; wherein, after the titanate coupling agent is pre-hydrolyzed, a medium that is conducive to the dispersion of dolomite powder is formed, which helps the dolomite powder to be more evenly dispersed in the pre-hydrolyzed liquid, thereby being able to effectively form a hydrophobic film on the surface of the shale powder, providing good surface properties for the effective combination of dolomite powder with materials such as retarders, water reducers, and waterproofing agents; in the production process, the modified The starch migrates to the interface with the water vapor, which can give full play to its bonding effect, so that the wood fiber and the gypsum slurry are closely combined, thereby improving the strength, water absorption and moisture return and bonding properties of the gypsum layer material; the combined effect of polyvinyl alcohol emulsion and silicone waterproofing agent can form a breathable and water-permeable protective film with excellent durability, preventing the board from cracking and peeling, greatly improving the service life of the clean board; after adding calcium lignin sulfonate, not only can the water consumption be reduced, but also due to the increased sliding ability between gypsum particles, the gypsum hydration can be more sufficient, which is beneficial to improve the strength of the gypsum layer material; the addition of plant protein retarders prolongs the setting time of gypsum, ensures that the gypsum board is fully solidified, reduces problems such as surface unevenness and weak bonding, and thus improves the quality of the clean board core material.

[0037] 4. The clean board core material of this application does not require artificial glue coating and compounding, and is cast on the production line to avoid VOC SThe emissions pollute the environment and there is a risk of aging in the later stage. Compared with the existing adhesive clean board core material, the clean board core material of the present application has excellent strength, flatness and bonding performance, and the combustion grade reaches Class A, the combustion endurance time is long, and the size can be customized according to customer requirements, which saves construction time and ensures construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0039] Figure 1 This is a schematic diagram of the structure of the clean board production system involved in the embodiment of the present application.

[0040] Figure 2 This is a schematic diagram of the structure of the clean plate involved in the embodiment of the present application.

[0041] List of parts and reference numerals:

[0042] 1. Raw material bin, 2. Top silo, 3. Loading part, 4. Mixing mechanism, 41. First mixing mechanism, 42. Second mixing mechanism, 5. Forming mechanism, 51. Conveyor belt, 511. Baffle, 52. Motor, 6. Drying mechanism, 7. Packing mechanism, 8. Clean board core material, 81. First gypsum layer, 82. Second gypsum layer, 83. First glass fiber mesh cloth, 84. Second glass fiber mesh cloth, 85. Rock wool belt, 9. Unwinding mechanism, 10. Cutting mechanism, 11. Rock wool bin, 12. Telescopic rod, 13. Pressing roller, 14. Trimming mechanism, 15. Casting mechanism. DETAILED DESCRIPTION

[0043] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

[0044] If no specific conditions are specified in the examples, the experiments were carried out under conventional conditions or conditions recommended by the manufacturer. The raw materials or instruments used, if no manufacturer is specified, are all conventional products that can be purchased commercially.

[0045] refer to Figure 1The present application provides a production system for clean board core materials, including a batching mechanism, a mixing mechanism 4, a pouring mechanism 15, a molding mechanism 5, a cutting mechanism 10, a drying mechanism 6, a trimming mechanism 14 and a packaging mechanism 7 connected in sequence. The batching mechanism is connected to the mixing mechanism 4 through a feeding part to ensure that the raw materials can stably and accurately enter the mixing mechanism 4, thereby ensuring the uniformity of mixing; the pouring mechanism 15 is arranged below the mixing mechanism 4, and the mixing mechanism 4 and the pouring mechanism 15 are arranged above the molding mechanism 5, so that the mixed materials can directly reach the molding mechanism 5, thereby reducing the material transfer process and improving production efficiency; the cutting mechanism 10 and the drying mechanism 6 are arranged at the end of the molding mechanism 5 in sequence, which is conducive to uniform and efficient drying of the molded board; the trimming mechanism 14 and the packaging mechanism 7 are arranged at the rear end of the drying mechanism 6 in sequence, so as to facilitate packaging of the dried board; wherein, two baffles 511 are continuously arranged on both sides of the molding mechanism 5, and the clean board core material 8 is molded between the molding mechanism 5 and the two baffles 511, which can meet the production needs of clean board core materials 8 of different specifications and sizes, thereby improving the flexibility of the production system and ensuring the quality of the finished product.

[0046] This efficient, environmentally friendly and automated production system has closely linked links, achieving continuous and standardized production, improving production efficiency and ensuring product quality.

[0047] In the present application, the feeding part is a feeding pump and / or a feeding screw, which realizes automatic transportation, reduces manual operation, and thus improves production efficiency.

[0048] As an implementation mode, the batching mechanism includes a raw material bin 1, a top silo 2 and a loading part 3. The raw material bin 1 and the top silo 2 are connected via the loading part 3 so as to complete a large amount of batching work in a shorter time, shortening the production cycle. The whole process has a high degree of automation, reduces manual operation and improves production efficiency.

[0049] The present application does not limit the specific type of the feeding part 3. For example, it can be a screw conveyor, which is helpful to reduce labor intensity, improve production efficiency and ensure safe production.

[0050] It can be understood that before the raw materials are mixed, the raw materials are weighed according to the formula using a weighing scale, and the control accuracy of the weighing scale is: ±0.5%; a double-axis screw mixer is provided in the top silo 2, which realizes accurate metering and efficient mixing of the raw materials, and helps to improve production efficiency and product quality.

[0051] As an implementation mode, the forming mechanism 5 includes a conveyor belt 51 and a motor 52. The motor 52 drives the conveyor belt 51 to rotate. The conveyor belt is in a vibrating state during the conveying process. Combined with the self-leveling characteristics of the slurry, the flatness of the slurry can be ensured, production requirements can be met, and production efficiency can be further improved. The baffles 511 are located on both sides of the conveyor belt 51. The smooth operation of the conveyor belt 51 ensures the stability of the baffles 511 during the movement, avoids the shaking and deformation of the wet material during the forming process, and thus improves the quality of the product.

[0052] As an implementation mode, a rewinding mechanism 9 is provided at the front end of the mixing mechanism 4, and the mixing mechanism 4 includes a first mixing mechanism 41 and a second mixing mechanism 42; a rock wool bin 11, a telescopic rod 12 and a pressure roller 13 which are connected in sequence from top to bottom are provided between the first mixing mechanism 41 and the second mixing mechanism 42, and a rock wool belt 85 is provided in the rock wool bin 11, so that the rock wool belt 85 can fall from the rock wool bin 11 into between the conveyor belt 51 and the two baffles 511, and be flattened to a specified thickness by the telescopic rod 12 and the pressure roller 13, thereby reducing manual operation and improving production efficiency.

[0053] As an implementation method, a mixer and a vibrator are provided in the mixing mechanism 4, which can mix the materials quickly and evenly, and help reduce the labor intensity of the workers;

[0054] The unwinding mechanism 9 is an unwinding roller, which can ensure that the glass fiber mesh cloth maintains a stable size and shape in the subsequent processing links by accurately controlling the unwinding speed and tension, thereby improving its processing accuracy and consistency;

[0055] The cutting mechanism 10 is any one of a laser cutter, a plasma cutting mechanism, and a flame cutting mechanism, which can realize automatic operation, reduce manual intervention, and improve production efficiency and product quality;

[0056] The drying mechanism 6 is a burner hot air furnace system, which can efficiently remove moisture from the board material and enable it to be formed quickly;

[0057] The trimming mechanism 14 is an annular blade having the same shape as the edge of the clean board core material 8, so that the edge of the clean board core material 8 after trimming is more flat and smooth, meeting the engineering requirements;

[0058] The packing mechanism 7 is an automatic packing machine, which is convenient for completing the packing work continuously and quickly, thereby improving production efficiency.

[0059] refer to Figure 2 The present application also provides a clean board core material 8, which is prepared in the above-mentioned production system. The surface flatness of the clean board core material 8 is ±40 degrees, which means that the surface of the clean board core material 8 of the present application is very smooth. It not only has excellent dust-proof, anti-static, antibacterial and other effects during use, but also is easy to clean and maintain.

[0060] The clean board core material 8 includes a rock wool layer and a first gypsum layer 81 and a second gypsum layer 82 respectively arranged on both sides of the rock wool layer, which is environmentally friendly and harmless, while ensuring the overall strength of the board;

[0061] The first gypsum layer 81 and the second gypsum layer 82 are respectively provided with a first glass fiber mesh cloth 83 and a second glass fiber mesh cloth 84; specifically, the first glass fiber mesh cloth 83 and the second glass fiber mesh cloth 84 are both made of alkali-resistant materials, which can not only ensure that the mesh cloth will not be corroded by wet materials, but also make the structure of the board more solid;

[0062] The rock wool layer is composed of a plurality of interlocking rock wool strips 85, which is convenient for threading construction after the installation of the clean board core material 8 in the later stage, and even after cutting, the rock wool strips 85 will be firmly interlocked, ensuring the stability of the thermal insulation material.

[0063] The production system of the clean board core material is used below to explain the production method of the clean board core material in detail through examples and comparative examples.

[0064] Example 1

[0065] A method for producing a clean board comprises the following steps:

[0066] (1) The gypsum powder and solid additives in the raw material bin are sequentially fed into the top silo through the feeding part, and after being mixed evenly, dry materials are obtained;

[0067] (2) feeding the dry material in the top silo into the first mixing mechanism and the second mixing mechanism respectively through the feeding part, adding water and liquid additives, and mixing them evenly to obtain the first wet material and the second wet material;

[0068] (3) As the conveyor belt rotates, the first glass fiber mesh cloth is unwound through the first unwinding mechanism arranged along the production direction and laid between the baffles on both sides of the conveyor belt, and at the same time, the first wet material in the first mixing mechanism is poured on the first glass fiber mesh cloth, so that the first glass fiber mesh cloth is embedded in the first wet material;

[0069] (4) As the conveyor belt continues to rotate, the rock wool belt in the rock wool bin is laid on the first wet material, and the telescopic rod drives the pressing roller to move downward to flatten the rock wool belt to a thickness of 3 cm;

[0070] (5) As the conveyor belt continues to rotate, the second glass fiber mesh cloth is unwound through the second unwinding mechanism arranged along the production direction and laid on the rock wool belt, and at the same time, the second wet material in the second mixing mechanism is poured on the second glass fiber mesh cloth, so that the second glass fiber mesh cloth is embedded in the second wet material to obtain a semi-finished product;

[0071] (6) The semi-finished products are cut according to the set size and sent to the drying mechanism for drying, and then enter the trimming mechanism and packaging mechanism in turn. The finished products can be packaged and shipped out of the factory;

[0072] Among them, based on the weight of gypsum powder, the solid additives include 0.1% modified starch, 2% wood fiber, 3% modified dolomite powder, 20% fly ash, 0.3% calcium lignin sulfonate and 0.05% vegetable protein retarder;

[0073] The liquid additives include 2% polyvinyl alcohol emulsion and 3% silicone water repellent, based on the weight of water;

[0074] The preparation method of modified dolomite powder comprises the following steps:

[0075] S1. Mix anhydrous ethanol and deionized water in a volume ratio of 8:1 evenly, then add a titanate coupling agent and ultrasonically vibrate for 10 minutes to obtain a pre-hydrolyzed solution;

[0076] S2. Add dolomite powder into anhydrous ethanol and deionized water in a volume ratio of 8:1, stir and heat to 70°C, then drop a pre-hydrolysis solution containing 1wt% titanate coupling agent, continue stirring until the reaction is completed, filter and dry to obtain modified dolomite powder.

[0077] Example 2

[0078] A method for producing a clean board comprises the following steps:

[0079] (1) The gypsum powder and solid additives in the raw material bin are sequentially fed into the top silo through the feeding part, and after being mixed evenly, dry materials are obtained;

[0080] (2) feeding the dry material in the top silo into the first mixing mechanism and the second mixing mechanism respectively through the feeding part, adding water and liquid additives, and mixing them evenly to obtain the first wet material and the second wet material;

[0081] (3) As the conveyor belt rotates, the first glass fiber mesh cloth is unwound through the first unwinding mechanism arranged along the production direction and laid between the baffles on both sides of the conveyor belt, and at the same time, the first wet material in the first mixing mechanism is poured on the first glass fiber mesh cloth, so that the first glass fiber mesh cloth is embedded in the first wet material;

[0082] (4) As the conveyor belt continues to rotate, the rock wool belt in the rock wool bin is laid on the first wet material, and the telescopic rod drives the pressing roller to move downward to flatten the rock wool belt to a thickness of 5 cm;

[0083] (5) As the conveyor belt continues to rotate, the second glass fiber mesh cloth is unwound through the second unwinding mechanism arranged along the production direction and laid on the rock wool belt, and at the same time, the second wet material in the second mixing mechanism is poured on the second glass fiber mesh cloth, so that the second glass fiber mesh cloth is embedded in the second wet material to obtain a semi-finished product;

[0084] (6) The semi-finished products are cut according to the set size and sent to the drying mechanism for drying, and then enter the trimming mechanism and packaging mechanism in turn. The finished products can be packaged and shipped out of the factory;

[0085] Among them, based on the weight of gypsum powder, the solid additives include 0.3% modified starch, 4% wood fiber, 5% modified dolomite powder, 25% fly ash, 0.6% calcium lignin sulfonate and 0.08% vegetable protein retarder;

[0086] The liquid additives include 3% polyvinyl alcohol emulsion and 4% silicone water repellent, based on the weight of water;

[0087] The preparation method of modified dolomite powder comprises the following steps:

[0088] S1. Mix anhydrous ethanol and deionized water in a volume ratio of 10:1 evenly, then add a titanate coupling agent and ultrasonically vibrate for 15 minutes to obtain a pre-hydrolyzed solution;

[0089] S2. Add dolomite powder into anhydrous ethanol and deionized water in a volume ratio of 10:1, stir and heat to 75°C, then drop a pre-hydrolysis solution containing 3wt% titanate coupling agent, continue stirring until the reaction is completed, filter and dry to obtain modified dolomite powder.

[0090] Example 3

[0091] A method for producing a clean board comprises the following steps:

[0092] (1) The gypsum powder and solid additives in the raw material bin are sequentially fed into the top silo through the feeding part, and after being mixed evenly, dry materials are obtained;

[0093] (2) feeding the dry material in the top silo into the first mixing mechanism and the second mixing mechanism respectively through the feeding part, adding water and liquid additives, and mixing them evenly to obtain the first wet material and the second wet material;

[0094] (3) As the conveyor belt rotates, the first glass fiber mesh cloth is unwound through the first unwinding mechanism arranged along the production direction and laid between the baffles on both sides of the conveyor belt, and at the same time, the first wet material in the first mixing mechanism is poured on the first glass fiber mesh cloth, so that the first glass fiber mesh cloth is embedded in the first wet material;

[0095] (4) As the conveyor belt continues to rotate, the rock wool belt in the rock wool bin is laid on the first wet material, and the telescopic rod drives the pressing roller to move downward to flatten the rock wool belt to a thickness of 6 cm;

[0096] (5) As the conveyor belt continues to rotate, the second glass fiber mesh cloth is unwound through the second unwinding mechanism arranged along the production direction and laid on the rock wool belt, and at the same time, the second wet material in the second mixing mechanism is poured on the second glass fiber mesh cloth, so that the second glass fiber mesh cloth is embedded in the second wet material to obtain a semi-finished product;

[0097] (6) The semi-finished products are cut according to the set size and sent to the drying mechanism for drying, and then enter the trimming mechanism and packaging mechanism in turn. The finished products can be packaged and shipped out of the factory;

[0098] Among them, based on the weight of gypsum powder, the solid additives include 0.5% modified starch, 5% wood fiber, 6% modified dolomite powder, 30% fly ash, 0.8% calcium lignin sulfonate and 0.1% vegetable protein retarder;

[0099] The liquid additives include 4% polyvinyl alcohol emulsion and 5% silicone water repellent, based on the weight of water;

[0100] The preparation method of modified dolomite powder comprises the following steps:

[0101] S1. Mix anhydrous ethanol and deionized water in a volume ratio of 12:1 evenly, then add a titanate coupling agent and ultrasonically vibrate for 20 minutes to obtain a pre-hydrolyzed solution;

[0102] S2. Add dolomite powder into anhydrous ethanol and deionized water in a volume ratio of 12:1, stir and heat to 80°C, then drop a pre-hydrolysis solution containing 5 wt% titanate coupling agent, continue stirring until the reaction is completed, filter and dry to obtain modified dolomite powder.

[0103] Example 4

[0104] The difference from Example 2 is that modified dolomite powder and its preparation method are not included.

[0105] Example 5

[0106] The difference from Example 2 is that fly ash is not included.

[0107] Example 6

[0108] The difference from Example 2 is that the preparation method of modified dolomite powder includes the following steps:

[0109] Dolomite powder and 3 wt % titanate coupling agent were added into anhydrous ethanol and deionized water in a volume ratio of 10:1, stirred evenly at 75° C., filtered and dried to obtain modified dolomite powder.

[0110] Example 7

[0111] The difference from Example 2 is that the titanate coupling agent is replaced by a silane coupling agent.

[0112] Comparative Example 1

[0113] A method for producing a clean board comprises the following steps:

[0114] Apply glue on the upper surface of a glass magnesium board, place several 5cm thick interlocking rock wool strips along the length direction, and cover another glass magnesium board with glue on the lower surface on the top of the rock wool strip. After drying, a clean board is obtained.

[0115] The clean panels prepared in Examples 1-8 and Comparative Example 1 were subjected to performance tests using the above production method. The results are shown in Table 1.

[0116] Table 1

[0117]

[0118]

[0119] It can be seen from Table 1 that compared with the production method of the clean board in Comparative Example 1, the clean board obtained by the production method of the present application has more excellent mechanical properties, combustion grade and bonding properties, especially the clean board obtained by the production method of Examples 1-3 has comprehensive improvement in various properties.

[0120] The above is only the embodiment of the present application, and the protection scope of the present application is not limited by these specific embodiments, but is determined by the claims of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the technical ideas and principles of the present application should be included in the protection scope of the present application.

Claims

1. A production system for clean board core material, characterized in that: It includes a batching mechanism, a mixing mechanism, a pouring mechanism, a molding mechanism, a cutting mechanism, a drying mechanism, a trimming mechanism and a packaging mechanism which are connected in sequence. The batching mechanism is connected to the mixing mechanism through a feeding portion. The pouring mechanism is arranged below the mixing mechanism, the mixing mechanism and the pouring mechanism are arranged above the molding mechanism, the cutting mechanism and the drying mechanism are arranged at the end of the molding mechanism in sequence, and the trimming mechanism and the packaging mechanism are arranged at the rear end of the drying mechanism in sequence. Two baffles are continuously arranged on both sides of the molding mechanism, and the clean board core material is molded between the molding mechanism and the two baffles.

2. The production system of clean board core material according to claim 1, characterized in that: The batching mechanism comprises a raw material bin, a top bin and a feeding part, and the raw material bin and the top bin are connected via the feeding part.

3. The production system of clean board core material according to claim 2, characterized in that: The forming mechanism comprises a conveyor belt and a motor, the motor drives the conveyor belt to rotate, and the baffles are located on both sides of the conveyor belt.

4. The production system of clean board core material according to claim 3, characterized in that: A reeling mechanism is arranged at the front end of the mixing mechanism, and the mixing mechanism comprises a first mixing mechanism and a second mixing mechanism, and a rock wool bin, a telescopic rod and a pressure roller connected in sequence from top to bottom are arranged between the first mixing mechanism and the second mixing mechanism, and a rock wool belt is arranged in the rock wool bin.

5. The production system of clean board core material according to claim 4, characterized in that: The mixing mechanism is provided with a stirrer and a vibrator; The unwinding mechanism is an unwinding roller; The cutting mechanism is any one of a laser cutter, a plasma cutting mechanism, and a flame cutting mechanism; The drying mechanism is a burner hot air furnace system; The trimming mechanism is a circular blade with the same shape as the edge of the clean board core material; The packaging mechanism is an automatic packaging machine.

6. A method for producing a clean board core material, using the production system of the clean board core material according to claim 5, characterized in that: The following steps are involved: (1) The gypsum powder and solid additives in the raw material bin are sequentially fed into the top silo through the feeding part, and after being mixed evenly, dry materials are obtained; (2) feeding the dry material in the top silo into the first mixing mechanism and the second mixing mechanism respectively through the feeding part, adding water and liquid additives, and mixing them evenly to obtain the first wet material and the second wet material; (3) As the conveyor belt rotates, the first glass fiber mesh cloth is unwound through the first unwinding mechanism arranged along the production direction and laid between the baffles on both sides of the conveyor belt, and at the same time, the first wet material in the first mixing mechanism is poured on the first glass fiber mesh cloth, so that the first glass fiber mesh cloth is embedded in the first wet material; (4) As the conveyor belt continues to rotate, the rock wool belt in the rock wool bin is laid on the first wet material, and the telescopic rod drives the pressing roller to move downward to flatten the rock wool belt; (5) As the conveyor belt continues to rotate, the second glass fiber mesh cloth is unwound through the second unwinding mechanism arranged along the production direction and laid on the rock wool belt, and at the same time, the second wet material in the second mixing mechanism is poured on the second glass fiber mesh cloth, so that the second glass fiber mesh cloth is embedded in the second wet material to obtain a semi-finished product; (6) The semi-finished products are cut according to the set size and sent to the drying mechanism for drying. They then enter the trimming mechanism and the packaging mechanism in turn. The finished products can be packaged and shipped out of the factory.

7. The method for producing a clean board core material according to claim 6, characterized in that: Based on the weight of gypsum powder, the solid additive includes 0.1-0.5% modified starch, 2-5% wood fiber, 3-6% modified dolomite powder, 20-30% fly ash, 0.3-0.8% calcium lignin sulfonate and 0.05-0.1% vegetable protein retarder; Based on the weight of water, the liquid additive includes 2-4% polyvinyl alcohol emulsion and 3-5% organic silicon waterproofing agent.

8. The method for producing a clean board core material according to claim 7, characterized in that: The preparation method of the modified dolomite powder comprises the following steps: S1. Evenly mix anhydrous ethanol and deionized water in a volume ratio of (8-12):1, then add a titanate coupling agent and ultrasonically vibrate for 10-20 minutes to obtain a pre-hydrolyzed solution; S2. Add dolomite powder to anhydrous ethanol and deionized water in a volume ratio of (8-12):1, stir and heat to 70-80°C, then dropwise add a pre-hydrolysis solution containing 1-5wt% titanate coupling agent, continue stirring until the reaction is completed, filter and dry to obtain modified dolomite powder.

9. The method for producing a clean board core material according to claim 6, characterized in that: The thickness of the rock wool belt is 3-6 cm.

10. A clean board core material, prepared by the production method of the clean board core material according to any one of claims 6 to 9, characterized in that: The surface flatness of the clean board core material is ±40 wire; The clean board core material comprises a rock wool layer and a first gypsum layer and a second gypsum layer respectively arranged on both sides of the rock wool layer; A first glass fiber mesh cloth and a second glass fiber mesh cloth are respectively arranged in the first gypsum layer and the second gypsum layer; The rock wool layer is composed of a plurality of staggered and interlocked rock wool belts.

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