Sandwich type thermal insulation wallboard and method for manufacturing the same

Abstract

The application relates to a sandwich type thermal insulation wallboard and a preparation method thereof. The application aims to solve the problems of high cost, low strength, poor fireproof performance and short service life of existing thermal insulation materials. The sandwich type thermal insulation wallboard is composed of AASCM sheet walls, connecting pieces, carbon fiber grid trusses and wood plastic thermal insulation layers; the wood plastic thermal insulation layers are provided with the carbon fiber grid trusses on two sides; the carbon fiber grid trusses are respectively provided with the AASCM sheet walls on two sides, and the connecting pieces pass through the wood plastic thermal insulation layers to connect the AASCM sheet walls on the two sides. The method comprises the following steps: 1, drilling uniform circular holes on the wood plastic thermal insulation layer, and placing the connecting pieces in the circular holes; 2, arranging the carbon fiber grid trusses on two sides of the wood plastic thermal insulation layer; 3, placing the assembled board core in a mold; and 4, uniformly pouring AASCM mixed materials along the two sides of the wood plastic thermal insulation layer into the mold. The application can obtain the sandwich type thermal insulation wallboard.

Description

TECHNICAL FIELD

[0001] The present application relates to a thermal insulation wallboard and a preparation method thereof. BACKGROUND

[0002] Building energy saving is an important issue in the 21st century, and building exterior wall insulation is a key link in building energy saving. Traditional insulation wallboard materials such as polystyrene board and polyurethane board have certain advantages in terms of thermal insulation performance, but they have disadvantages in terms of environmental protection, fire prevention and resource utilization. With the increasing demand for environmental protection, energy saving and sustainable development, it is particularly important to find a wallboard that has good thermal insulation performance, lightweight, and makes full use of industrial waste and environmentally friendly materials such as crop straw and rice husk.

[0003] Past research has mainly focused on the improvement of traditional materials and the development of new materials. For example, some researchers have increased the air layer in the thermal insulation material to improve the thermal insulation effect, but this method has limited effect on improving the fire resistance; some researchers have tried to introduce new thermal insulation materials such as aerogel, but the high cost limits its promotion in the market. In addition, these studies often do not fully consider environmental protection and resource utilization, which cannot meet the current market demand. SUMMARY

[0004] The purpose of the present application is to solve the problems of high cost, low strength, poor fire resistance and short service life of existing thermal insulation materials, and to provide a sandwich thermal insulation wallboard and a preparation method thereof.

[0005] In view of the shortcomings of the above background art, the present application provides a sandwich thermal insulation wallboard, which makes full use of environmentally friendly materials such as industrial waste (such as slag, recycled sand, recycled plastic, wood-plastic insulation layer). By using the combination of AASCM wall and wood-plastic insulation layer, combined with fiber-reinforced FRP connectors and carbon fiber grid truss, a novel and reliable structure is formed. This structure not only ensures the overall strength and stability of the wallboard, but also improves the thermal insulation performance of the wallboard, meeting the demand of the building industry for high-performance thermal insulation materials. At the same time, this new sandwich thermal insulation wallboard realizes lightweight and high thermal insulation performance, and takes into account environmental protection, fire prevention and resource utilization, etc., and has good development potential and market prospect.

[0006] A sandwich thermal insulation wallboard, characterized in that it is composed of AASCM wall, connector, carbon fiber grid truss and wood-plastic insulation layer.

[0007] The wood-plastic insulation layer is provided with carbon fiber grid trusses on both sides; the carbon fiber grid trusses are provided with AASCM walls on both sides respectively, and the connector passes through the wood-plastic insulation layer to connect the AASCM walls on both sides.

[0008] A preparation method of a sandwich type thermal insulation wallboard is completed according to the following steps:

[0009] I. Uniformly distributed round holes are drilled on the wood-plastic thermal insulation layer, the connecting piece is placed in the round hole, and is fixed by using glue to prevent position deviation during pouring;

[0010] The diameter of the round hole in step one is 8mm-10mm;

[0011] II. The carbon fiber grid truss is arranged on both sides of the wood-plastic thermal insulation layer, and is fixed by using a transverse tie wire to obtain an assembled core;

[0012] III. The assembled core is placed in a mold, and a laser positioning instrument is used to determine the position of the core installation;

[0013] IV. The AASCM mixed material is uniformly poured into the mold along both sides of the wood-plastic thermal insulation layer, and is vibrated during pouring, and then is sealed and cured, thereby completing the processing of the sandwich type thermal insulation wallboard.

[0014] Principle of the present application:

[0015] The present application utilizes AASCM page wall, connecting piece, carbon fiber grid truss and wood-plastic thermal insulation layer to form a sandwich type thermal insulation board; 20%-40% of slag, 10%-30% of calcium oxide, 10%-30% of recycled sand, 20%-40% of ceramsite, 5%-10% of recycled plastic microbeads, 10%-25% of water, 1% of composite fiber and alkali activator are used to prepare the AASCM page wall; different components interact with each other at the macro level, and synergistically improve the reliability of the sandwich type thermal insulation board; different components also improve the overall performance of the AASCM page wall as the core component in the new sandwich type thermal insulation board through synergistic effect; the following is a brief analysis of the synergistic effect between them:

[0016] Synergistic effect between components of the sandwich type thermal insulation board:

[0017] AASCM page wall: has high mechanical properties and durability, and provides good structural support for the sandwich type thermal insulation board;

[0018] Wood-plastic thermal insulation layer: polyethylene, polypropylene and polyvinyl chloride extracted from waste plastics are mixed with wood powder, rice husk, straw and other waste plant fibers to form a new wood material, which has good thermal insulation performance and can effectively reduce the overall thermal conductivity of the wallboard;

[0019] Connecting piece: connects the AASCM page wall and the wood-plastic thermal insulation layer together, improves the overall strength and stability of the wallboard, and has a relatively low thermal conductivity, which has a relatively small influence on the thermal insulation performance;

[0020] Carbon fiber grid truss: carbon fiber grid truss is arranged on both sides of the insulation board, which enhances the overall stability and tensile strength of the wallboard.

[0021] AASCM page wall component synergy:

[0022] Slag, alkali activator, calcium oxide: slag is used as an alkali active material, and slag can form a gel under the action of an alkali activator, thereby improving the mechanical properties and durability of the page wall. However, alkali slag cementitious material has a congenital defect of excessive drying shrinkage. Calcium oxide as an expanding agent can improve the defect of excessive drying shrinkage and improve the mechanical properties of AASCM.

[0023] Recycled sand and ceramsite: recycled sand is prepared by using waste bricks, waste concrete, etc., which not only reduces the burden on the environment, but also improves the mechanical properties of the material. However, using only recycled sand as fine aggregate filling will result in excessive self-weight and general anti-cracking performance of the material. Ceramsite as coarse aggregate filling can greatly reduce the self-weight of the material and optimize the grading, thereby improving the anti-cracking performance and mechanical properties of the material.

[0024] Recycled plastic microbeads: made of waste plastic products, which have good thermal insulation performance and can effectively reduce the thermal conductivity of the wallboard.

[0025] Composite fiber: improves the tensile strength and impact resistance of the page wall, and enhances the overall stability of the wallboard.

[0026] Through the synergy between the above components and materials, the new sandwich insulation wallboard provided by the present application meets the safety requirements of building structure while ensuring high thermal insulation performance. The mechanical properties and durability of the AASCM page wall combined with the thermal insulation performance of the wood-plastic insulation layer form a high-performance sandwich insulation wallboard.

[0027] In addition, most of the materials used in the present application are environmentally friendly materials, such as slag, recycled sand, recycled plastic microbeads, wood-plastic insulation layer, etc. The waste from industry and life is effectively utilized, and the burden on the environment is reduced. At the same time, the use of fiber reinforced FRP connecting pieces and carbon fiber grid truss improves the overall stability and tensile strength of the wallboard, making the sandwich insulation wallboard more practical and reliable.

[0028] In summary, the sandwich type thermal insulation wallboard provided by the present application is a new type of sandwich type thermal insulation wallboard, which combines AASCM leaf wall and wood-plastic thermal insulation layer, combines fiber reinforced FRP connecting piece and carbon fiber grid truss, and forms a novel and reliable structure. The structure not only ensures the overall strength and stability of the wallboard, but also improves the thermal insulation performance of the wallboard. In practical application, the sandwich type thermal insulation wallboard can be widely used in building outer walls, partition walls and other occasions, and meets the demand of the building industry for high-performance thermal insulation materials.

[0029] The sandwich type thermal insulation wallboard prepared by the present application has the following advantages:

[0030] (1) The present application uses recycled plastic microbeads as thermal insulation material, which effectively improves the thermal insulation performance of the wallboard. Recycled plastic microbeads have low thermal conductivity, which can slow down the transfer of heat and improve the thermal insulation performance. At the same time, recycled plastic microbeads have low density, which can reduce the overall weight of the wallboard. This is of great significance to the structural design and construction process of buildings, and helps to reduce the self-weight of buildings, thereby reducing the pressure on the foundation and reducing the construction difficulty and cost.

[0031] (2) The sandwich type thermal insulation wallboard of the present application almost entirely uses environmentally friendly materials, including slag, recycled sand, recycled plastic microbeads, wood-plastic thermal insulation layer, etc. The reuse of these waste materials helps to reduce the burden on the environment and reduce resource consumption. At the same time, the use of these environmentally friendly materials also helps to improve the performance of the wallboard. For example, slag as an alkali-active material can form a gel under the action of alkali activator, improving the mechanical properties and durability of the leaf wall; recycled sand and recycled plastic microbeads can improve the mechanical properties and thermal insulation performance of the material.

[0032] (3) The present application adopts the combination of AASCM leaf wall and wood-plastic thermal insulation layer, combined with fiber reinforced FRP connecting piece and carbon fiber grid truss, to form a novel and reliable structure. This structure not only ensures the overall strength and stability of the wallboard, but also improves the thermal insulation performance of the wallboard. The synergistic effect between the connecting piece and the carbon fiber grid truss makes the wallboard stable when subjected to external pressure and impact, and is not prone to cracking and deformation. This novel and reliable structure makes the sandwich type thermal insulation wallboard of the present application have higher durability and safety in practical application.

[0033] (4) The sandwich type thermal insulation wallboard of the present application is produced by prefabrication, with uniform specifications, and does not require additional processing during construction, and can be installed directly according to the designed size. At the same time, the weight of the wallboard is light, easy to carry, which can effectively improve the construction efficiency. In addition, the connection method of the wallboard is simple, which is fixed by fiber reinforced FRP connecting piece and carbon fiber grid truss, without complicated on-site operation, reducing the construction difficulty and construction period.

[0034] (5) The sandwich-type insulated wall panel in this invention has excellent thermal insulation performance, which helps to reduce the energy consumption of buildings. In winter, the wall panel can slow down the loss of indoor heat and reduce the operating time of heating equipment; in summer, the wall panel can prevent the intrusion of external heat and reduce the load on air conditioning equipment. This can effectively save energy, thereby reducing carbon emissions and benefiting environmental protection.

[0035] (6) The sandwich-type thermal insulation wall panel of this invention contains hollow recycled plastic microspheres inside. This structure can effectively absorb and reduce the propagation of sound waves, giving the wall panel a good sound insulation effect. In noisy environments, this wall panel can reduce indoor and outdoor noise interference and improve the comfort of living and working. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the sandwich-type thermal insulation wall panel in this invention. In the figure, 1 is the AASCM wall panel, 2 is the wood-plastic insulation layer, 3 is the carbon fiber mesh truss, and 4 is the connector.

[0037] Figure 2 It is a carbon fiber mesh truss;

[0038] Figure 3 The following is a description of the manufacturing process of the sandwich-type thermal insulation wall panel in Example 1: (a) Figure shows the assembly of the core panel, (b) Figure shows the sandwich-type thermal insulation board mold, (c) Figure shows the installation and positioning of the core panel, (d) Figure shows the mixing of AASCM mix, (e) Figure shows the pouring of the thermal insulation wall panel, and (f) Figure shows the pouring and sealing.

[0039] Figure 4 The image shows the compression failure of the sandwich-type thermal insulation wall panel prepared in Example 1. Detailed Implementation

[0040] Specific implementation method one: This implementation method is a sandwich-type thermal insulation wall panel, characterized in that it is composed of AASCM leaf wall, connectors, carbon fiber mesh truss and wood-plastic insulation layer;

[0041] The wood-plastic insulation layer has carbon fiber mesh trusses on both sides; AASCM leaf walls are provided on both sides of the carbon fiber mesh trusses, and the connector passes through the wood-plastic insulation layer to connect the AASCM leaf walls on both sides.

[0042] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the AASCM wall is composed of 20% to 40% of slag, 10% to 30% of calcium oxide, 10% to 30% of recycled sand, 20% to 40% of ceramsite, 5% to 10% of recycled plastic microbeads, 10% to 25% of water, 1% of composite fiber and alkali activator according to mass fraction; the mass ratio of the alkali activator to the slag is 1:5.37. The other steps are the same as specific embodiment one.

[0043] Specific embodiment three: the difference between this embodiment and one of specific embodiment one or two is that the slag is an industrial waste produced in the process of reducing iron, which is acid slag; the alkali activator is prepared by dissolving NaOH in potassium water glass with a modulus of 0.8 to 1.4, and the mass ratio of NaOH to potassium water glass is 0.3673:1. The other steps are the same as specific embodiment one or two.

[0044] Specific embodiment four: the difference between this embodiment and one of specific embodiment one to three is that the recycled sand is a mixture of particles of any one or two or more of discarded bricks and tiles, discarded concrete, discarded mortar and discarded stone blocks after crushing; the ceramsite is a kind of light-weight building material with a honeycomb structure, which is a small ceramic bead made of clay containing bauxite, shale or fly ash and other components after being fired at 1200℃. The other steps are the same as specific embodiment one to three.

[0045] Specific embodiment five: the difference between this embodiment and one of specific embodiment one to four is that the recycled plastic microbead is a circular particle made by crushing, washing, melting, extruding, cutting and antioxidant process of discarded plastic products; the composite fiber is a polycrystalline composite fiber, including mullite fiber, aluminum oxide fiber and zirconium oxide fiber. The other steps are the same as specific embodiment one to four.

[0046] Specific embodiment six: the difference between this embodiment and one of specific embodiment one to five is that the particle size of the slag is 30 to 100 μm; the particle size of the calcium oxide is 20 nm to 80 nm; the diameter of the ceramsite is 5 mm to 10 mm; the particle size of the recycled sand is 0.3 mm to 2 mm; the particle size of the recycled plastic microbead is 1 mm to 5 mm; the single filament diameter of the composite fiber is 3 to 4 μm. The other steps are the same as specific embodiment one to five.

[0047] Specific embodiment seven: the difference between this embodiment and one of specific embodiment one to six is that the connecting piece is a FRP connecting piece; the carbon fiber grid truss is woven by carbon fiber, and the grid size is 25 mm x 25 mm. The other steps are the same as specific embodiment one to six.

[0048] Specific Implementation Method Eight: This implementation method differs from Specific Implementation Methods One through Seven in that the wood-plastic insulation layer is produced by mixing polyethylene, polypropylene, or polyvinyl chloride extracted from waste plastics with more than 35% to 70% by weight of wood powder, rice husks, or straw to form a new wood material, which is then processed through extrusion, molding, and injection molding to produce the board. Other steps are the same as in Specific Implementation Methods One through Seven.

[0049] Specific Implementation Method Nine: This implementation method is a preparation method for a sandwich-type thermal insulation wall panel, which is completed according to the following steps:

[0050] 1. Drill evenly distributed round holes in the wood-plastic insulation layer, put the connectors into the round holes, and fix them with glue first to prevent them from deviating during the pouring process;

[0051] The diameter of the circular hole mentioned in step one is 8mm to 10mm;

[0052] 2. Arrange the carbon fiber mesh truss on both sides of the wood-plastic insulation layer, and then fix it with transverse tie wires to obtain the assembled core board;

[0053] 3. Place the assembled core board in the mold and use a laser positioning instrument to determine the installation position of the core board.

[0054] 4. Pour the AASCM mixture evenly into the mold along both sides of the wood-plastic insulation layer, vibrate it during the pouring process, and then seal and cure it to complete the processing of the sandwich-type insulation wall panel.

[0055] Specific Implementation Method Ten: The difference between this implementation method and Specific Implementation Method Nine is that the preparation method of the AASCM mixture in step four is carried out according to the following steps:

[0056] 1. Dissolve NaOH in potassium silicate with a modulus of 0.8 to 1.4 to obtain an alkaline activator;

[0057] The mass ratio of NaOH to potassium silicate in step one is 0.3673:1;

[0058] 2. Weigh out 20%–40% slag, 10%–30% calcium oxide, 10%–30% recycled sand, 20%–40% ceramsite, 5%–10% recycled plastic microspheres, 10%–25% water, and 1% composite fiber according to the mass fraction; mix the 20%–40% slag, 10%–30% calcium oxide, 10%–30% recycled sand, 20%–40% ceramsite, 5%–10% recycled plastic microspheres, and 1% composite fiber evenly to obtain a solid mixture;

[0059] 3. Mix the solid mixture with 10% to 25% water and alkali activator evenly to obtain AASCM mixture;

[0060] The mass ratio of the alkali activator to the slag in step three is 1:5.37. The other steps are the same as embodiment nine.

[0061] The beneficial effects of the present application are verified by the following examples:

[0062] Example 1: A sandwich type thermal insulation wallboard, which is composed of AASCM leaf wall, connecting piece, carbon fiber grid truss and wood plastic thermal insulation layer;

[0063] The wood plastic thermal insulation layer is provided with carbon fiber grid trusses on both sides; the AASCM leaf walls are respectively arranged on the two sides of the carbon fiber grid trusses, and the connecting piece passes through the wood plastic thermal insulation layer to connect the two AASCM leaf walls;

[0064] A preparation method of a sandwich type thermal insulation wallboard is completed by the following steps:

[0065] I. Drill uniform circular holes on the wood plastic thermal insulation layer, place the connecting piece in the circular hole, and first fix it with glue to prevent position deviation during pouring;

[0066] The diameter of the circular hole in step one is 8mm;

[0067] II. Arrange the carbon fiber grid trusses on both sides of the wood plastic thermal insulation layer, and then fix them through the transverse tie steel wire to obtain an assembled core;

[0068] III. Place the assembled core in the mold, and use a laser positioning instrument to determine the position of the core installation;

[0069] IV. Pour the AASCM mixed material along the two sides of the wood plastic thermal insulation layer into the mold, vibrate during pouring, and then seal and maintain the film, that is, complete the processing of the sandwich type thermal insulation wallboard;

[0070] The preparation method of the AASCM mixed material in step four is as follows:

[0071] ①Dissolve NaOH in potassium water glass with a modulus of 1.2 to obtain an alkali activator;

[0072] The mass ratio of NaOH to potassium water glass in step ① is 0.3673:1;

[0073] ②According to the mass fraction, take 30 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 20 parts of ceramsite, 5 parts of recycled plastic microbeads, 10 parts of water and 1 part of composite fiber; mix 30 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 20 parts of ceramsite, 5 parts of recycled plastic microbeads and 1 part of composite fiber uniformly to obtain a solid mixed material;

[0074] The slag in step ② is an acidic slag obtained by quenching molten iron.

[0075] The ceramsite in step 2 is a clay containing bauxite fired at 1200 DEG C;

[0076] The recycled sand in step 2 is a mixture of particles of crushed waste bricks and tiles;

[0077] The recycled plastic microbead in step 2 is a round particle made of waste plastic through processes of crushing, cleaning, melting, extruding, cutting and antioxidation;

[0078] The composite fiber in step 2 is mullite fiber;

[0079] 3. The solid mixture is mixed with 10 parts of water and an alkali activator to obtain AASCM mixture;

[0080] The mass ratio of the alkali activator to the slag in step 3 is 1:5.37.

[0081] The sandwich type thermal insulation wallboard with a size of 900mm*900mm is prepared by using the method, and the test results are as follows: the compressive strength is 37.0MPa; the thermal insulation performance is 0.030W / m·K; the fire resistance level is B1; and the weight is 18kg / m 2 , which can well meet the thermal insulation effect and the pressure bearing demand to a certain extent.

[0082] Embodiment 2: A sandwich type thermal insulation wallboard, which is composed of AASCM leaf wall, connecting piece, carbon fiber grid truss and wood-plastic thermal insulation layer;

[0083] The wood-plastic thermal insulation layer is provided with carbon fiber grid trusses on both sides; the AASCM leaf walls are respectively arranged on both sides of the carbon fiber grid trusses; and the connecting piece passes through the wood-plastic thermal insulation layer to connect the AASCM leaf walls on both sides;

[0084] A preparation method of a sandwich type thermal insulation wallboard is completed according to the following steps:

[0085] I. Uniformly distributed round holes are drilled on the wood-plastic thermal insulation layer, the connecting piece is placed in the round hole and is first fixed with glue to prevent position deviation during pouring;

[0086] The diameter of the round hole in step I is 8mm;

[0087] II. The carbon fiber grid trusses are arranged on both sides of the wood-plastic thermal insulation layer, and are then fixed through the transverse tie steel wires to obtain an assembled core;

[0088] III. The assembled core is placed in a mold, and a laser positioning instrument is used to determine the position of the core installation;

[0089] Four, the AASCM mixture is poured into the mold along the two sides of the wood-plastic insulation layer, and is vibrated during pouring, and then is sealed and maintained, so that the sandwich insulation wallboard is completed;

[0090] The preparation method of the AASCM mixture in step four is performed according to the following steps:

[0091] ①, NaOH is dissolved in potassium water glass with a modulus of 0.8 to obtain an alkali activator;

[0092] The mass ratio of NaOH to potassium water glass in step ① is 0.2479:1;

[0093] ②, 35 parts of slag, 20 parts of calcium oxide, 10 parts of recycled sand, 20 parts of ceramsite, 10 parts of recycled plastic microbeads, 10 parts of water and 1 part of composite fiber are weighed according to the mass fraction; 35 parts of slag, 20 parts of calcium oxide, 10 parts of recycled sand, 20 parts of ceramsite, 10 parts of recycled plastic microbeads and 1 part of composite fiber are mixed uniformly to obtain a solid mixture;

[0094] The slag in step ② is an acidic slag obtained by quenching molten iron;

[0095] The ceramsite in step ② is clay containing shale powder fired at 1200℃;

[0096] The recycled sand in step ② is a mixture of particles obtained by crushing waste concrete;

[0097] The recycled plastic microbead in step ② is a circular particle made of waste PE plastic film through the processes of crushing, washing, melting, extruding, cutting and antioxidant;

[0098] The composite fiber in step ② is an aluminum oxide fiber;

[0099] ③, the solid mixture and 10 parts of water and the alkali activator are mixed uniformly to obtain an AASCM mixture;

[0100] The mass ratio of the alkali activator to the slag in step ③ is 1:5.37.

[0101] The sandwich insulation wallboard with a size of 900mm×900mm is made by using the method, and the test results are obtained: the compressive strength is 35MPa; the thermal insulation performance is 0.028W / m·K; the fire resistance is A1; the weight is 19kg / m 2 , which can well meet the insulation effect and meet the pressure demand to a certain extent.

[0102] Example 3: A sandwich insulation wallboard, which is composed of an AASCM wall, a connecting piece, a carbon fiber grid truss and a wood-plastic insulation layer;

[0103] The wood-plastic thermal insulation layer is provided with carbon fiber grid trusses on two sides; the two sides of the carbon fiber grid trusses are respectively provided with AASCM page walls, and the connecting pieces connect the two sides of the AASCM page walls through the wood-plastic thermal insulation layer;

[0104] A preparation method of a sandwich thermal insulation wallboard is completed according to the following steps:

[0105] I. Drill uniform circular holes on the wood-plastic thermal insulation layer, place the connecting pieces in the circular holes, and fix them with glue to prevent position deviation during pouring;

[0106] The diameter of the circular hole in step one is 10 mm;

[0107] II. Place the carbon fiber grid trusses on both sides of the wood-plastic thermal insulation layer, and then fix them with horizontal tie wires to obtain an assembled core;

[0108] III. Place the assembled core in the mold and use a laser positioning instrument to determine the position of the core installation;

[0109] IV. Pour the AASCM mixed material along the two sides of the wood-plastic thermal insulation layer into the mold, vibrate during pouring, and then seal and maintain, thereby completing the processing of the sandwich thermal insulation wallboard;

[0110] The preparation method of the AASCM mixed material in step four is as follows:

[0111] ① Dissolve NaOH in potassium water glass with a modulus of 1.4 to obtain an alkali activator;

[0112] The mass ratio of NaOH to potassium water glass in step ① is 0.2479:1;

[0113] ② Weigh 40 parts of slag, 15 parts of calcium oxide, 10 parts of recycled sand, 10 parts of ceramsite, 5 parts of recycled plastic microbeads, 20 parts of water and 1 part of composite fiber; mix 40 parts of slag, 15 parts of calcium oxide, 10 parts of recycled sand, 10 parts of ceramsite, 5 parts of recycled plastic microbeads and 1 part of composite fiber uniformly to obtain a solid mixed material;

[0114] The slag in step ② is an acidic slag obtained by quenching molten iron;

[0115] The ceramsite in step ② is clay containing fly ash fired at about 1200°C;

[0116] The recycled sand in step ② is a particle mixture obtained by crushing waste mortar;

[0117] The recycled plastic microbeads in step ② are round particles made from waste PVC pipes through processes such as crushing, cleaning, melting, extruding, cutting and antioxidant treatment.

[0118] The composite fiber in step 2 is a zirconium oxide fiber;

[0119] 3. The solid mixture is mixed with 20 parts of water and an alkali activator to obtain an AASCM mixture;

[0120] The mass ratio of the alkali activator to the slag in step 3 is 1:5.37.

[0121] The sandwich thermal insulation wallboard with a size of 900mm*900mm is prepared by using the method, and the test results are as follows: the compressive strength is 41MPa; the thermal insulation performance is 0.032W / m*K; the fire resistance is B1; and the weight is 17kg / m 2 , which can well meet the thermal insulation effect and meet the pressure demand to a certain extent.

[0122] Embodiment 4: A sandwich thermal insulation wallboard, which is composed of AASCM wall, connecting piece, carbon fiber grid truss and wood-plastic insulation layer;

[0123] The wood-plastic insulation layer is provided with carbon fiber grid trusses on both sides; the AASCM walls are respectively arranged on both sides of the carbon fiber grid trusses; and the connecting piece passes through the wood-plastic insulation layer to connect the AASCM walls on both sides;

[0124] A preparation method of a sandwich thermal insulation wallboard is completed according to the following steps:

[0125] I. Drill uniform circular holes on the wood-plastic insulation layer, place the connecting piece in the circular holes, and fix it with glue to prevent position deviation during pouring;

[0126] The diameter of the circular hole in step 1 is 10mm;

[0127] II. Arrange the carbon fiber grid trusses on both sides of the wood-plastic insulation layer, and then fix them through the transverse tie steel wires to obtain an assembled core;

[0128] III. Place the assembled core in the mold, and use a laser positioning instrument to determine the position of the core installation;

[0129] IV. Pour the AASCM mixture along both sides of the wood-plastic insulation layer into the mold, vibrate during pouring, and then seal and maintain, to complete the processing of the sandwich thermal insulation wallboard;

[0130] The preparation method of the AASCM mixture in step IV is as follows:

[0131] 1. Dissolve NaOH in potassium water glass with a modulus of 1.0 to obtain an alkali activator;

[0132] The mass ratio of NaOH to potassium water glass in step 1 is 0.2479:1;

[0133] In step 2, 25 parts of slag, 18 parts of calcium oxide, 20 parts of recycled sand, 20 parts of ceramsite, 7 parts of recycled plastic microbeads, 10 parts of water and 1 part of composite fiber are weighed according to the mass fraction; 25 parts of slag, 18 parts of calcium oxide, 20 parts of recycled sand, 20 parts of ceramsite, 7 parts of recycled plastic microbeads and 1 part of composite fiber are mixed uniformly to obtain a solid mixture;

[0134] The slag in step 2 is an acidic slag obtained by quenching molten iron;

[0135] The ceramsite in step 2 is clay containing fly ash fired at 1200 DEG C;

[0136] The recycled sand in step 2 is a mixture of particles obtained by crushing waste stone blocks;

[0137] The recycled plastic microbead in step 2 is a circular particle made of waste PE plastic pipe by crushing, cleaning, melting, extruding, cutting and antioxidant processes;

[0138] The composite fiber in step 2 is zirconia fiber;

[0139] In step 3, the solid mixture, 10 parts of water and an alkali activator are mixed uniformly to obtain an AASCM mixture;

[0140] The mass ratio of the alkali activator to the slag in step 3 is 1:5.37.

[0141] The method is used to make a sandwich type thermal insulation wallboard with a size of 900mm*900mm for performance test, and the test results are: compressive strength is 39MPa; thermal insulation performance is 0.026W / m·K; fire resistance is A1; weight is 20kg / m 2 , which can well meet the thermal insulation effect and meet the pressure demand to a certain extent.

[0142] Example 5: A sandwich type thermal insulation wallboard, which is composed of AASCM wall, connecting piece, carbon fiber grid truss and wood plastic insulation layer;

[0143] The wood plastic insulation layer is provided with carbon fiber grid trusses on both sides; the AASCM walls on both sides of the carbon fiber grid trusses are respectively provided with connecting pieces penetrating through the wood plastic insulation layer to connect the AASCM walls on both sides;

[0144] A preparation method of a sandwich type thermal insulation wallboard is completed according to the following steps:

[0145] I. Drill uniform circular holes on the wood-plastic insulation layer, place the connecting pieces into the circular holes, and fix them with glue to prevent position deviation during pouring;

[0146] The diameter of the circular hole in step I is 8 mm;

[0147] II. Place the carbon fiber grid truss on both sides of the wood-plastic insulation layer, and then fix it with transverse tie wires to obtain an assembled core;

[0148] III. Place the assembled core in the mold and use a laser positioning instrument to determine the position of the core installation;

[0149] IV. Pour the AASCM mixture along the two sides of the wood-plastic insulation layer into the mold, vibrate during pouring, and then seal and maintain the film, which completes the processing of the sandwich insulation wallboard;

[0150] The preparation method of the AASCM mixture in step IV is as follows:

[0151] ① Dissolve NaOH in potassium water glass with a modulus of 1.3 to obtain an alkali activator;

[0152] The mass ratio of NaOH to potassium water glass in step ① is 0.2479:1;

[0153] ② Weigh 20 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 25 parts of ceramsite, 10 parts of recycled plastic microbeads, 15 parts of water and 1 part of composite fiber; mix 20 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 25 parts of ceramsite, 10 parts of recycled plastic microbeads and 1 part of composite fiber; mix 25 parts of slag uniformly to obtain a solid mixture;

[0154] The slag in step ② is an acidic slag obtained by quenching molten iron;

[0155] The ceramsite in step ② is a clay containing bauxite and vanadium, which is fired at 1200℃;

[0156] The recycled sand in step ② is a mixture of crushed particles of waste bricks and waste concrete;

[0157] The recycled plastic microbeads in step ② are round particles made from waste ABS plastic through processes such as crushing, washing, melting, extruding and cutting;

[0158] The composite fiber in step ② is an aluminum oxide fiber;

[0159] ③ Mix the solid mixture, 10 parts of water and the alkali activator uniformly to obtain the AASCM mixture;

[0160] The mass ratio of the alkali activator to the slag in step 3 is 1:5.37.

[0161] The sandwich type thermal insulation wallboard with a size of 900mm*900mm is prepared by using the method, and performance test is conducted, and test results are as follows: the compressive strength is 45MPa; the thermal insulation performance is 0.031W / m*K; the fire resistance level is B1; and the weight is 18.5kg / m 2 , which can well meet the thermal insulation effect and meet the pressure requirement to a certain extent.

[0162] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application, and these changes and modifications shall all belong to the protection scope of the present application.

Claims

1. A sandwich type thermal insulation wallboard, which is composed of AASCM leaf wall, connecting piece, carbon fiber grid truss and wood plastic thermal insulation layer, has a compressive strength of 37.0 MPa, a thermal insulation performance of 0.030 W / m·K, a fire resistance level of B1 and a weight of 18 kg / m 2 , and can well meet the thermal insulation effect and the pressure bearing demand to a certain extent. The wood-plastic thermal insulation layer is provided with carbon fiber grid trusses on two sides; the two sides of the carbon fiber grid trusses are respectively provided with AASCM leaf walls, and the connecting pieces connect the AASCM leaf walls on the two sides through the wood-plastic thermal insulation layer; The preparation method of the sandwich thermal insulation wallboard is completed according to the following steps: I. Drill uniform circular holes on the wood-plastic thermal insulation layer, put the connecting pieces into the circular holes, and first fix them with glue to prevent position deviation during pouring; The diameter of the circular hole in step one is 8mm; II. Arrange the carbon fiber grid trusses on the two sides of the wood-plastic thermal insulation layer, and then fix them through the horizontal tie steel wires to obtain an assembled core; III. Place the assembled core in the mold, and use a laser positioning instrument to determine the position of the core installation; IV. Pour the AASCM mixed material along the two sides of the wood-plastic thermal insulation layer into the mold, vibrate during pouring, and then seal and maintain, thereby completing the processing of the sandwich thermal insulation wallboard; The preparation method of the AASCM mixed material in step four is as follows: ①Dissolve NaOH in potassium water glass with a modulus of 1.2 to obtain an alkali activator; The mass ratio of NaOH to potassium water glass in step ① is 0.3673:1; 2. According to the quality fraction, 30 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 20 parts of ceramsite, 5 parts of recycled plastic microbeads, 10 parts of water and 1 part of composite fiber are weighed; Mix 30 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 20 parts of ceramsite, 5 parts of recycled plastic microbeads and 1 part of composite fiber uniformly to obtain a solid mixed material; The slag in step ② is an acidic slag obtained by quenching molten iron; The ceramsite in step ② is clay containing bauxite, which is fired at 1200℃; The recycled sand in step ② is a particle mixture obtained by crushing waste bricks and tiles; The recycled plastic microbeads in step ② are round particles made of waste plastics through processes such as crushing, cleaning, melting, extruding, cutting and antioxidant treatment; The composite fiber in step ② is mullite fiber; ③Mix the solid mixed material with 10 parts of water and the alkali activator uniformly to obtain the AASCM mixed material; The mass ratio of the alkali activator to the slag in step ③ is 1:5.

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2. A sandwich thermal insulation wallboard, which is composed of AASCM leaf wall, connecting piece, carbon fiber grid truss and wood plastic thermal insulation layer, has a compressive strength of 35 MPa, a thermal insulation performance of 0.028 W / m·K, a fire resistance performance of fire resistance grade A1 and a weight of 19 kg / m 2 , and can well meet the thermal insulation effect and the pressure bearing demand to a certain extent. The wood-plastic thermal insulation layer is provided with carbon fiber grid trusses on two sides; the two sides of the carbon fiber grid trusses are respectively provided with AASCM leaf walls, and the connecting pieces connect the AASCM leaf walls on the two sides through the wood-plastic thermal insulation layer; A preparation method of a sandwich thermal insulation wallboard is completed according to the following steps: I. Drill uniform circular holes on the wood-plastic thermal insulation layer, put the connecting pieces into the circular holes, and first fix them with glue to prevent position deviation during pouring; The diameter of the circular hole in step one is 8mm; II. Arrange the carbon fiber grid trusses on the two sides of the wood-plastic thermal insulation layer, and then fix them through the horizontal tie steel wires to obtain an assembled core; III. Place the assembled core in the mold, and use a laser positioning instrument to determine the position of the core installation; IV. Pour the AASCM mixed material along the two sides of the wood-plastic thermal insulation layer into the mold, vibrate during pouring, and then seal and maintain, thereby completing the processing of the sandwich thermal insulation wallboard; The preparation method of the AASCM mixed material in step four is as follows: ①Dissolve NaOH in potassium water glass with a modulus of 0.8 to obtain an alkali activator; The mass ratio of NaOH to potassium water glass in step 1 is 0.2479:1; In step 2, 35 parts of slag, 20 parts of calcium oxide, 10 parts of recycled sand, 20 parts of ceramsite, 10 parts of recycled plastic microbeads, 10 parts of water and 1 part of composite fiber are weighed according to the mass fraction; 35 parts of slag, 20 parts of calcium oxide, 10 parts of recycled sand, 20 parts of ceramsite, 10 parts of recycled plastic microbeads and 1 part of composite fiber are uniformly mixed to obtain a solid mixture; The slag in step 2 is an acidic slag obtained by quenching molten iron; The ceramsite in step 2 is clay containing shale powder fired at 1200 DEG C; The recycled sand in step 2 is a particle mixture obtained by crushing waste concrete; The recycled plastic microbead in step 2 is a circular particle prepared by crushing, cleaning, melting, extruding, cutting and antioxidant processes of waste PE plastic film; The composite fiber in step 2 is an alumina fiber; In step 3, the solid mixture, 10 parts of water and an alkali activator are uniformly mixed to obtain an AASCM mixture; The mass ratio of the alkali activator to the slag in step 3 is 1:5.

37.

3. A sandwich thermal insulation wallboard, which is composed of AASCM leaf wall, connecting piece, carbon fiber grid truss and wood plastic thermal insulation layer, and has a compressive strength of 41 MPa. The thermal insulation performance is 0.032 W / m·K; the fire resistance level is B1; and the weight is 17 kg / m 2 , can well meet the thermal insulation effect, and meet the pressure demand to a certain extent; The wood-plastic insulation layer is provided with carbon fiber grid trusses on both sides; the two sides of the carbon fiber grid truss are respectively provided with AASCM leaf walls, and the connecting piece connects the two sides of the AASCM leaf wall through the wood-plastic insulation layer; A preparation method of a sandwich type insulation wallboard is completed according to the following steps: I. Drill uniform circular holes on the wood-plastic insulation layer, put the connecting piece into the circular hole, and first fix it with glue to prevent position deviation during pouring; The diameter of the circular hole in step 1 is 10mm; II. Arrange the carbon fiber grid truss on both sides of the wood-plastic insulation layer, and then fix it through the transverse tie wire to obtain an assembled core; III. Place the assembled core in the mold and use a laser positioning instrument to determine the position of the core installation; IV. Pour the AASCM mixture evenly along both sides of the wood-plastic insulation layer into the mold, vibrate during pouring, and then seal and maintain, thereby completing the processing of the sandwich type insulation wallboard; The preparation method of the AASCM mixture in step IV is as follows:

1. Dissolve NaOH in potassium water glass with a modulus of 1.4 to obtain an alkali activator; The mass ratio of NaOH to potassium water glass in step 1 is 0.2479:1; 2. Weigh 40 parts of slag, 15 parts of calcium oxide, 10 parts of recycled sand, 10 parts of ceramsite, 5 parts of recycled plastic microbeads, 20 parts of water and 1 part of composite fiber according to the mass fraction; Mix 40 parts of slag, 15 parts of calcium oxide, 10 parts of recycled sand, 10 parts of ceramsite, 5 parts of recycled plastic microbeads and 1 part of composite fiber uniformly to obtain a solid mixture; The slag in step 2 is an acidic slag obtained by quenching molten iron; The ceramsite in step 2 is clay containing fly ash fired at about 1200 DEG C; The recycled sand in step 2 is a particle mixture obtained by crushing waste mortar; The recycled plastic microbead in step 2 is a circular particle prepared by crushing, cleaning, melting, extruding, cutting and antioxidant processes of waste PVC pipe; The composite fiber in step 2 is a zirconia fiber; ③, the solid mixture and 20 parts of water and alkali activator are mixed uniformly to obtain the AASCM mixture; The mass ratio of the alkali activator to the slag in step 3 is 1:5.

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4. A sandwich thermal insulation wallboard, which is composed of AASCM leaf wall, connecting piece, carbon fiber grid truss and wood plastic thermal insulation layer, has a compressive strength of 39 MPa, a thermal insulation performance of 0.026 W / m·K, a fire resistance grade of A1 and a weight of 20 kg / m 2 , and can well meet the thermal insulation effect and the pressure bearing demand to a certain extent. The two sides of the wood-plastic insulation layer are provided with carbon fiber grid trusses; the two sides of the carbon fiber grid truss are respectively provided with AASCM leaf walls, and the connecting piece connects the two sides of the AASCM leaf wall through the wood-plastic insulation layer; A preparation method of a sandwich type thermal insulation wallboard is completed by the following steps: I. Drill uniform circular holes on the wood-plastic insulation layer, put the connecting piece into the circular hole, and first fix it with glue to prevent position deviation during pouring; The diameter of the circular hole in step 1 is 10mm; II. Arrange the carbon fiber grid truss on both sides of the wood-plastic insulation layer, and then fix it through the horizontal tie steel wire to obtain an assembled core; III. Place the assembled core in the mold and use the laser positioning instrument to determine the position of the core installation; IV. Pour the AASCM mixture uniformly along the two sides of the wood-plastic insulation layer into the mold, vibrate during pouring, and then seal and maintain, thereby completing the processing of the sandwich type thermal insulation wallboard; The preparation method of the AASCM mixture in step 4 is as follows:

1. Dissolve NaOH in potassium water glass with a modulus of 1.0 to obtain an alkali activator; The mass ratio of NaOH to potassium water glass in step 1 is 0.2479:1; 2. Weigh 25 parts of slag, 18 parts of calcium oxide, 20 parts of recycled sand, 20 parts of ceramsite, 7 parts of recycled plastic microbeads, 10 parts of water and 1 part of composite fiber according to the mass fraction; mix 25 parts of slag, 18 parts of calcium oxide, 20 parts of recycled sand, 20 parts of ceramsite, 7 parts of recycled plastic microbeads and 1 part of composite fiber uniformly to obtain a solid mixture; The slag in step 2 is an acidic slag obtained by quenching molten iron; The ceramsite in step 2 is clay containing fly ash fired at 1200℃; The recycled sand in step 2 is a mixture of particles obtained by crushing waste stone blocks; The recycled plastic microbead in step 2 is a circular particle made of waste PE plastic pipe through the processes of crushing, cleaning, melting, extruding, cutting and antioxidant; The composite fiber in step 2 is zirconia fiber; 3. Mix the solid mixture with 10 parts of water and the alkali activator uniformly to obtain the AASCM mixture; The mass ratio of the alkali activator to the slag in step 3 is 1:5.

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5. A sandwich thermal insulation wallboard, which is composed of AASCM leaf wall, connecting piece, carbon fiber grid truss and wood plastic thermal insulation layer, has a compressive strength of 45 MPa, a thermal insulation performance of 0.031 W / m·K, a fire resistance grade of B1 and a weight of 18.5 kg / m 2 , and can well meet the thermal insulation effect and the pressure bearing demand to a certain extent. The two sides of the wood-plastic insulation layer are provided with carbon fiber grid trusses; the two sides of the carbon fiber grid truss are respectively provided with AASCM leaf walls, and the connecting piece connects the two sides of the AASCM leaf wall through the wood-plastic insulation layer; A preparation method of a sandwich type thermal insulation wallboard is completed by the following steps: I. Drill uniform circular holes on the wood-plastic insulation layer, put the connecting piece into the circular hole, and first fix it with glue to prevent position deviation during pouring; The diameter of the circular hole in step 1 is 8mm; II. Arrange the carbon fiber grid truss on both sides of the wood-plastic insulation layer, and then fix it through the horizontal tie steel wire to obtain an assembled core; III. Put the assembled board core in the mold, and determine the position of the board core installation by using a laser positioning instrument; IV. Pour the AASCM mixture along the two sides of the wood-plastic insulation layer into the mold, and vibrate during pouring, then seal and maintain, that is, the processing of the sandwich insulation wallboard is completed; The preparation method of the AASCM mixture in step IV is as follows: ① Dissolve NaOH in potassium water glass with a modulus of 1.3 to obtain an alkali activator; The mass ratio of NaOH to potassium water glass in step ① is 0.2479:1; ii. 20 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 25 parts of ceramsite, 10 parts of recycled plastic microbeads, 15 parts of water and 1 part of composite fiber are weighed according to the mass fraction; 20 parts of slag, 15 parts of calcium oxide, 15 parts of recycled sand, 25 parts of ceramsite, 10 parts of recycled plastic microbeads, and 1 part of composite fiber; Mix 25 parts of slag uniformly to obtain a solid mixture; The slag in step ② is an acidic slag obtained by quenching molten iron; The ceramsite in step ② is a clay containing bauxite, which is fired at 1200°C; The recycled sand in step ② is a mixture of crushed particles of waste bricks and tiles and waste concrete; The recycled plastic microbead in step ② is a circular particle made of waste ABS plastic through processes such as crushing, washing, melting, extruding, and cutting; The composite fiber in step ② is an alumina fiber; ③ Mix the solid mixture, 10 parts of water, and the alkali activator uniformly to obtain an AASCM mixture; The mass ratio of the alkali activator to slag in step ③ is 1:5.37.

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