Sound insulation and heat preservation integrated board based on carbon sequestration fiber board and its preparation and application

Abstract

This invention discloses a sound-insulating and heat-insulating integrated panel based on solid carbon fiber board, its manufacturing method, and its application. The sound-insulating and heat-insulating integrated panel based on solid carbon fiber board comprises, from bottom to top, a substrate slurry sandwich layer and a carbon mineralization coating; the substrate slurry sandwich layer has a sandwich structure, including a lightweight porous non-combustible core material board in the middle and substrate slurry layers on the upper and lower sides. This invention, by constructing a composite structural system of "solid carbon substrate - porous core layer - mineralization coating," realizes the transformation of carbon mineralization technology from a single "strength enhancer" to a multi-functional "functional builder" at the material and process levels. This system enables the panel to possess lightweight and high-strength structural properties at room temperature, and under fire conditions, the core layer and coating work together to form a stable thermal barrier, and through a unique structural design, it efficiently blocks sound waves and heat transfer, thereby producing a green building material product that combines negative carbon characteristics, industrial solid waste resource utilization, and multiple high-performance properties such as sound insulation, heat insulation, and fire resistance.

Description

Technical Field

[0001] This invention belongs to the field of multifunctional building materials technology, and particularly relates to a sound insulation and heat preservation integrated board based on solid carbon fiber board, its manufacturing method and application. Background Technology

[0002] Multifunctional composite panels, as core materials for building envelopes and interior decoration, directly affect a building's energy efficiency, acoustic comfort, and safety. Traditionally, to meet multiple requirements such as sound insulation, heat preservation, fire resistance, and structural strength, a layered construction method is commonly used in engineering projects. This involves sequentially installing structural panels, adding a sound insulation layer, a heat insulation layer, and a fire-resistant finishing layer. This "stacked" construction method has inherent defects such as complex procedures, low integration, and the easy formation of sound and thermal bridges at the joints, resulting in compromised overall performance, long construction cycles, and high costs.

[0003] To improve integration, integrated products such as sandwich panels have emerged in the market. However, these products still face serious technical challenges: First, poor functional synergy. Most products only involve physical "bonding" rather than chemical "fusion." For example, using organic foam plastics (such as polystyrene and polyurethane) as the core layer, while lightweight and with good thermal insulation, results in poor fire resistance and releases large amounts of toxic fumes when burning, creating a sharp contradiction with building fire safety requirements. If inorganic materials such as rock wool and glass wool are used, they suffer from high density, easy moisture absorption, low strength, and are prone to delamination and detachment after aging when bonded to the surface layer. Second, insufficient environmental friendliness throughout the material lifecycle. The production process of traditional panels is energy-intensive and generates large carbon emissions, and fails to effectively utilize industrial solid waste, contradicting the concept of green building.

[0004] In recent years, to reduce the carbon footprint of building materials, carbon mineralization technology has been introduced into this field. It primarily enhances the density and strength of materials by reacting carbon dioxide with cement-based materials to generate carbonates. However, existing technologies are often simplistic, mostly treating carbon mineralization as a reinforcement method for the substrate. This singular strength-oriented application has significant limitations: the carbonates generated by carbon mineralization decompose under high-temperature fires. While this process is endothermic, it also leads to material structural pulverization and a sharp loss of strength, potentially threatening the fire resistance integrity of the components. In other words, current carbon mineralization technology not only fails to actively contribute to the fire resistance of materials, but its high-temperature decomposition characteristics even constitute a "potential disadvantage."

[0005] In addition, although some studies have attempted to incorporate industrial solid waste (such as fly ash and slag) as fillers into boards, most of them remain at the initial stage of physical filling. They have failed to systematically integrate the chemical activity and carbon mineralization and storage potential of solid waste with the multifunctionality of boards (sound insulation, heat insulation, fire resistance), and thus cannot achieve the high-value-added utilization of "waste treatment".

[0006] Therefore, under the current technological background, there is an urgent need for a multifunctional integrated panel solution with innovative principles. It must fundamentally resolve the contradictions between function and safety, performance and environmental protection; that is, how to transform carbon mineralization technology from a simple "strength enhancer" into a positive factor in constructing a "high-temperature thermal barrier" through the synergistic design of materials and structure, and on this basis, achieve a perfect unity of efficient sound insulation, thermal insulation, fire resistance, and a lightweight, high-strength structure, while simultaneously meeting the needs of continuous industrial production. This is precisely the core problem that this invention aims to solve. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide an integrated sound insulation and heat preservation panel based on solid carbon fiber board, its manufacturing method, and its application.

[0008] This invention provides a novel, multifunctional board material technology solution based on an integrated "structure-function" design. It addresses the problems of poor functional synergy, easy interface peeling, and difficulty in balancing safety and environmental performance in traditional composite boards. It also overcomes the limitations of conventional carbon mineralization technology, which can only enhance the strength of the substrate and cannot systematically improve the overall sound insulation, thermal insulation, and fire resistance of the board. This invention constructs a composite structural system of "carbon-fixed substrate - porous core layer - mineralized coating," transforming carbon mineralization technology from a single "strength enhancer" to a multi-functional "functional builder" at the material and process levels. This system enables the board to possess lightweight and high-strength structural properties at room temperature. Under fire conditions, the core layer and coating work together to form a stable thermal barrier, and through a unique structural design, it effectively blocks sound waves and heat transfer. This results in a green building material product made from industrial solid waste, possessing negative carbon characteristics and excellent sound insulation, thermal insulation, and fire resistance.

[0009] The objective of this invention is achieved through the following technical solution:

[0010] A sound insulation and heat insulation integrated panel based on solid carbon fiber board, comprising, from bottom to top, a substrate slurry sandwich layer and a carbon mineralization coating; the substrate slurry sandwich layer has a sandwich structure, including a lightweight porous non-combustible core material board in the middle and substrate slurry layers on the upper and lower sides. The substrate paste layer comprises the following components in parts by weight: 10-30 parts high-temperature resistant inorganic fiber, 60-85 parts calcium-magnesium industrial solid waste, 5-20 parts silicon-aluminum industrial solid waste, and 20-40 parts water. The dry density of the lightweight porous non-combustible core material board is ≤300 kg / m³. 3 Thermal conductivity ≤0.065 W / (m·K), combustion performance is A1 grade; The carbon mineralization coating comprises the following components in parts by weight: 40-60 parts of calcareous material with carbon mineralization activity, 5-15 parts of silica-alumina functional filler, 0.1-5 parts of functional additives, and 30-50 parts of water.

[0011] In this invention, high-temperature resistant inorganic fibers construct a three-dimensional network framework within the substrate, serving as a key reinforcing phase that provides core mechanical properties, prevents cracking, and enhances product toughness. Calcium-magnesium industrial solid waste is the absolute main component of the substrate's carbon mineralization cementation system, providing initial alkalinity and acting as a core reactant in the reaction with CO2 to form a carbonate crystalline framework. Silicon-aluminum industrial solid waste acts as a performance optimizer, passively dissolving in the system's alkaline environment to participate in the formation of an auxiliary cementing phase, used to fill pores and optimize the substrate's later strength and durability.

[0012] Calcareous materials with carbon mineralization activity are key to achieving rapid carbon mineralization reactions, high strength, and excellent durability in coatings. Their reaction with CO2 efficiently generates a dense, interwoven calcium carbonate crystal and silica gel composite structure. Aluminosilicate functional fillers are used to further react with the silica gel, a byproduct of the carbon mineralization reaction, to generate a secondary gel phase. This fills the nanoscale pores of the coating, improving its impermeability, toughness, and adhesion strength to the substrate.

[0013] Preferably, the substrate slurry layer comprises the following components in parts by weight: 15-25 parts high-temperature resistant inorganic fiber, 70-80 parts calcium-magnesium industrial solid waste, 10-15 parts silicon-aluminum industrial solid waste, and 25-35 parts water.

[0014] Preferably, the carbon mineralization coating comprises the following components in parts by weight: 45-55 parts of calcareous material with carbon mineralization activity, 8-12 parts of silica-alumina functional filler, 0.5-3 parts of functional additives, and 35-45 parts of water.

[0015] Preferably, the high-temperature resistant inorganic fiber is at least one of basalt fiber, carbon fiber and alkali-free glass fiber, with a fiber length of 3~12mm and a single filament diameter of 9~18μm.

[0016] Preferably, the calcium-magnesium industrial solid waste is at least one of carbide slag, converter steel slag, and magnesium slag.

[0017] Preferably, the silica-alumina industrial solid waste is at least one of fly ash and granulated blast furnace slag powder.

[0018] Preferably, the lightweight porous non-combustible core material board is one of foam ceramic board or foam glass board.

[0019] Preferably, the core active component of the calcareous material with carbon mineralization activity is γ-C2S.

[0020] Preferably, the calcareous material with carbon mineralization activity is at least one of calcined synthetic mineral powder, magnesium slag, and steel slag.

[0021] Preferably, the silica-alumina functional filler is at least one of silica fume and ultrafine fly ash.

[0022] Preferably, the functional additive is composed of a dispersant, an antifoamer, and a rheology modifier, wherein the dispersant accounts for 0.2 to 1.0 wt% of the total components of the carbon mineralization coating powder; the antifoamer accounts for 0.1 to 0.5 wt% of the total components of the carbon mineralization coating powder; and the rheology modifier accounts for 0.2 to 1.0 wt% of the total components of the carbon mineralization coating powder.

[0023] Preferably, the dispersant is an aqueous polymeric dispersant.

[0024] In this invention, the dispersant effectively wets and disperses powder particles through steric hindrance and electrostatic repulsion, preventing sedimentation and flocculation, ensuring the storage stability of the coating and giving it good leveling properties.

[0025] Preferably, the defoamer is an organosilicon compound or a polyether-modified organosilicon compound.

[0026] In this invention, the defoamer is used to suppress and eliminate bubbles during the production mixing and construction spraying process, so as to avoid defects such as pinholes and fisheyes in the coating after curing, thereby improving its density and appearance quality.

[0027] Preferably, the rheology modifier is a cellulose ether compound or an associative polyurethane thickener.

[0028] In this invention, the rheology modifier is used to precisely control the rheological properties of the coating, providing good water retention, anti-sagging properties and suitable spraying viscosity.

[0029] The above-mentioned method for preparing the sound insulation and heat insulation integrated panel based on solid carbon fiber board includes the following steps: S1. According to the composition ratio, high-temperature resistant inorganic fiber, calcium-magnesium industrial solid waste, silicon-aluminum industrial solid waste and water are mixed evenly to obtain a substrate slurry; 40-50 wt% of the substrate slurry is injected into a mold, filtered and dehydrated, and then dried to obtain a first wet blank with a moisture content of 15-25%; the lightweight porous non-combustible core material board is laid on the first wet blank, and then the remaining substrate slurry is injected, and a second wet blank with a moisture content of 15-25% is prepared under the same conditions to obtain a substrate slurry sandwich layer; According to the stated component ratio, calcium-based materials with carbon mineralization activity, silica-alumina functional fillers, functional additives, and water are mixed evenly to obtain a carbon mineralization coating. S2. After the substrate slurry sandwich layer is pressed into shape, a first stage of carbon mineralization curing is performed; the carbon mineralization coating is applied to the surface of the sample after the first stage of carbon mineralization curing to obtain a carbon mineralization wet coating with a thickness of 0.5~1.5mm. After preliminary hardening, the sample is subjected to a second stage of carbon mineralization curing.

[0030] Preferably, the substrate slurry in step S1 is prepared by the following method: calcium-magnesium industrial solid waste, silicon-aluminum industrial solid waste and high-temperature resistant inorganic fibers are added to a cement mortar mixer according to the component ratio, and dry-mixed at a speed of 140~285r / min for 10~15min. Then, water is added to the mixed dry material, and the mixture is stirred in a cement mortar mixer at a speed of 140~285r / min for 10~15min.

[0031] Preferably, in step S1, 40-50 wt% of substrate slurry is injected into a mold, filtered for 1-3 minutes to remove some moisture, and then the sample is dried at 40-60°C for 10-30 minutes to obtain a first wet blank with a moisture content of 15-25%.

[0032] Preferably, the carbon mineralization coating described in step S1 is prepared by the following method: according to the component ratio, calcium material with carbon mineralization activity and silica-alumina functional filler are added to a high-speed disperser and dry-mixed at a speed of 300~500 r / min for 2~3 min. Then, water is added to the mixed dry material and stirred at a speed of 1500~2000 r / min for 10~15 min. Then, functional additives are added and the speed is gradually increased to 2500~3000 r / min and stirred for 10~15 min.

[0033] Preferably, the specific operation of pressing the substrate slurry sandwich layer in step S2 is as follows: placing the sample in a press and cold pressing it for 1 to 5 minutes at room temperature under a pressure of 5.0 to 30.0 MPa.

[0034] Preferably, the specific method of carbon mineralization curing in step S2 is as follows: the sample is placed in an environment with a CO2 volume fraction of 30-60%, a temperature of 60-80℃, and a relative humidity of 70-90% for continuous curing for 24-72 hours.

[0035] Preferably, step S2, preliminary hardening, refers to the early hardening state achieved by the sample after curing at 40~60℃ under ventilated conditions for 0.5~2 hours.

[0036] Preferably, the specific method of the two-stage carbon mineralization curing in step S2 is as follows: the sample is placed in an environment with a CO2 volume fraction ≥20%, a temperature of 40~60℃, and a relative humidity of 70~85% for continuous curing for 4~12 hours.

[0037] The aforementioned sound insulation and thermal insulation integrated panels based on solid carbon fiber boards are used in building walls and transportation cabins.

[0038] The reaction mechanism involved in this invention is as follows: The core mechanism of this invention differs from existing simple physical composite or single carbon mineralization technologies. It is a two-stage, progressive, and functionally complementary synergistic process of "substrate carbonization skeleton construction" and "coating carbon mineralization-gel synergistic sealing." Primary reaction (substrate carbon mineralization skeleton construction): During the carbon mineralization curing stage, calcium-magnesium industrial solid waste (such as Ca(OH)2 in carbide slag) serves as the core reactant, undergoing a rapid carbon mineralization reaction with high-concentration CO2 to generate a large number of calcium carbonate crystals. These crystals intertwine within the substrate, forming a high-strength, rigid crystalline framework, which provides the substrate with the primary mechanical strength and enables large-scale CO2 sequestration.

[0039] Secondary reaction (coating carbon mineralization-gel synergistic sealing): In the coating, γ-C2S preferentially undergoes an efficient carbon mineralization reaction with CO2 and H2O, rapidly generating nanoscale calcium carbonate crystals and amorphous silica gel. The calcium carbonate crystals, similar to the substrate framework, construct the dense structure of the coating. Simultaneously, the highly reactive silica gel byproduct further reacts with the aluminosilicate functional fillers (such as silica fume) in the coating to generate a small amount of CSH gel, which finely fills and seals the carbon mineralization crystal network.

[0040] The entire process, through precise control of raw material ratios and stepped curing conditions, ensures optimal synergy between the rigid skeleton of the substrate and the dense sealing layer of the coating. The resulting "rigid skeleton-flexible seal" composite structure not only possesses excellent room-temperature mechanical properties and durability, but also, under high-temperature fire conditions, through triggered endothermic evaporation of water combined with gel in the coating and substrate, as well as the physical barrier of inorganic fibers and non-combustible core materials, jointly constructs a highly efficient and stable fireproof and thermal barrier.

[0041] Compared with the prior art, the beneficial effects of the present invention include: (1) Breaking through traditional limitations and achieving integrated structure and function: This invention fundamentally solves the core problems of traditional composite panels, such as easy peeling of functional layers, prominent contradictions between safety and environmental performance, and the fact that conventional carbon mineralization technology can only enhance the substrate but cannot systematically contribute to the overall sound insulation, heat preservation, and fire resistance performance of the panel, through the synergistic mechanism of "substrate carbon mineralization skeleton-coating synergistic sealing". While achieving lightweight and high-strength structural performance, it integrates efficient sound insulation, heat preservation, and active fire prevention functions.

[0042] (2) Excellent and stable fire resistance: Due to the use of high-temperature resistant inorganic fibers (such as basalt fiber) to reinforce the substrate and the construction of a dense calcium carbonate-silica gel composite structure generated by γ-C2S carbon mineralization in the coating, this integrated board exhibits excellent stability under high-temperature fire conditions. The inorganic fibers are non-melting and non-combustible, providing long-term structural support; the dense coating and matrix effectively block heat. The measured fire resistance limit can reach more than 120 minutes, and there is no release of toxic fumes at high temperatures, avoiding the risk of combustion of organic insulation materials or oxidation failure of traditional expansion coatings.

[0043] (3) Significant Environmental Benefits Across the Entire Chain: This invention achieves environmental benefits throughout its entire life cycle. First, it achieves complete resource utilization: Both the substrate and coating absorb large amounts of industrial solid waste such as carbide slag, steel slag, fly ash, and slag, realizing a complete solid waste substitution from "cementing material" to "functional filler." Second, it achieves efficient negative carbonization: Through the carbon mineralization curing process of the substrate and coating, a large amount of CO2 is permanently sealed, giving the product significant "negative carbon" characteristics. The entire life cycle meets the highest standards of green building materials.

[0044] (4) Strong process applicability and broad application prospects: The stepped carbon mineralization curing process adopted in this invention has mild conditions (room temperature to 80℃, normal pressure), requires no complex equipment or high-energy-consuming processes, and can directly utilize industrial waste gas as a carbon source. The prepared integrated panel can be cut and installed using conventional equipment, and the product has a high degree of standardization. It is suitable for various scenarios with high requirements for sound insulation, heat preservation and fire prevention, such as building interior and exterior walls, roofs, high-speed rail, and ship cabins, and has broad market application prospects. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0046] Example 1 A method for preparing an integrated sound insulation and heat preservation panel based on solid carbon fiber board, the specific steps of which are as follows: (1) Weigh 20g of basalt fiber (9mm in length and 13μm in diameter) and 75g of carbide slag (f-CaO and Ca(OH)2 total content 68%, specific surface area 520m²). 2 / kg), 15g fly ash (Grade II, specific surface area 420m²) 2 Add ( / kg) to a high-speed mixer and dry mix at 140 r / min for 12 min to obtain a uniform dry powder mixture; add 30 g of water to the dry powder mixture and stir at 285 r / min for 10 min using a cement mortar mixer to prepare a uniform substrate slurry. 50 wt% of substrate slurry was injected into a mold, filtered for 2 minutes, and the moisture content was controlled at 20% to form the first wet blank; a 30 mm thick foam ceramic board (density 250 kg / m³) was then laid on the first wet blank. 3 The remaining substrate slurry is injected into the mold to cover the foam ceramic board, and the filtration process is repeated to form a second wet blank with a moisture content of 20%, thus obtaining the substrate slurry sandwich layer. Weigh 50g of γ-C2S (specific surface area of ​​550 m²) 2 0.3g of hydroxypropyl methylcellulose (HPMC) was added to a high-speed disperser and dry-mixed evenly. Then, 40g of water was added and stirred to prepare a carbon mineralization coating. (2) The substrate slurry sandwich layer is cold-pressed for 3 minutes at room temperature and 15.0 MPa pressure. The formed blank is sent into a carbon mineralization curing kettle and cured for 48 hours under conditions of CO2 concentration of 40%, temperature of 70℃ and relative humidity of 80%. The carbon mineralization coating is sprayed onto the surface of the cured substrate slurry sandwich layer using an airless spraying device. The wet film thickness is 1.0 mm. Then, the water is controlled for 1 hour under ventilation at 50℃. Finally, the sample is cured for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0047] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 1 was tested to be 12.5 kg / m³. 2 The flexural strength is 22.1 MPa, the weighted sound insulation (Rw) is 43 dB, the thermal conductivity (λ) is 0.047 W / (m·K), the coating adhesion is 2.5 MPa, and the fire resistance limit is 110 min.

[0048] Example 2 A method for preparing an integrated sound insulation and heat preservation board based on solid carbon fiber board is the same as that in Example 1, except that the amount of carbide slag is replaced with 60g.

[0049] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 2 was tested to be 11.5 kg / m³. 2 It has a flexural strength of 16.8 MPa, a weighted sound insulation (Rw) of 42 dB, a thermal conductivity (λ) of 0.048 W / (m·K), a coating adhesion of 2.4 MPa, and a fire resistance limit of 105 min.

[0050] Example 3 A method for preparing a sound insulation and heat preservation integrated panel based on solid carbon fiber board is the same as that in Example 1, except that the amount of carbide slag is replaced with 85g.

[0051] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 3 was tested to be 12.2 kg / m³. 2 It has a flexural strength of 19.2 MPa, a weighted sound insulation (Rw) of 43 dB, a thermal conductivity (λ) of 0.046 W / (m·K), a coating adhesion of 2.4 MPa, and a fire resistance limit of 108 min.

[0052] Example 4 A method for preparing an integrated sound insulation and heat preservation board based on solid carbon fiber board is the same as that in Example 1, except that the amount of fly ash is replaced with 5g.

[0053] The areal density of the sound insulation and heat insulation integrated panel prepared in Example 4 was tested to be 12.1 kg / m³. 2 The flexural strength is 20.1 MPa, the weighted sound insulation (Rw) is 42 dB, the thermal conductivity (λ) is 0.048 W / (m·K), the coating adhesion is 2.5 MPa, and the fire resistance limit is 107 min.

[0054] Example 5 A method for preparing an integrated sound insulation and heat preservation board based on solid carbon fiber board is the same as that in Example 1, except that the amount of fly ash is replaced with 20g.

[0055] The areal density of the sound insulation and heat insulation integrated panel prepared in Example 5 was tested to be 12.3 kg / m³. 2 It has a flexural strength of 18.3 MPa, a weighted sound insulation (Rw) of 43 dB, a thermal conductivity (λ) of 0.047 W / (m·K), a coating adhesion of 2.4 MPa, and a fire resistance limit of 109 min.

[0056] Example 6 A method for preparing a sound insulation and heat preservation integrated panel based on solid carbon fiber board is the same as that in Example 1, except that the amount of basalt fiber is replaced with 10g.

[0057] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 6 was tested to be 11.2 kg / m³. 2 The flexural strength is 15.2 MPa, the weighted sound insulation (Rw) is 42 dB, the thermal conductivity (λ) is 0.049 W / (m·K), the coating adhesion is 2.3 MPa, and the fire resistance limit is 102 min.

[0058] Example 7 A method for preparing a sound insulation and heat preservation integrated panel based on solid carbon fiber board is the same as that in Example 1, except that the amount of basalt fiber is replaced with 30g.

[0059] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 7 was tested to be 12.8 kg / m³. 2 It has a flexural strength of 23.5 MPa, a weighted sound insulation (Rw) of 43 dB, a thermal conductivity (λ) of 0.046 W / (m·K), a coating adhesion of 2.6 MPa, and a fire resistance limit of 112 min.

[0060] Example 8 A method for preparing a sound insulation and heat preservation integrated panel based on solid carbon fiber board is the same as that in Example 1, except that the amount of γ-C2S is replaced with 40g.

[0061] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 8 was tested to be 12.4 kg / m³. 2 The flexural strength is 21.5 MPa, the weighted sound insulation (Rw) is 43 dB, the thermal conductivity (λ) is 0.047 W / (m·K), the coating adhesion is 1.9 MPa, and the fire resistance limit is 98 min.

[0062] Example 9 A method for preparing a sound insulation and heat preservation integrated panel based on solid carbon fiber board is the same as that in Example 1, except that the amount of γ-C2S is replaced with 60g.

[0063] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 9 was tested to be 12.6 kg / m³. 2 It has a flexural strength of 22.5 MPa, a weighted sound insulation (Rw) of 43 dB, a thermal conductivity (λ) of 0.046 W / (m·K), a coating adhesion of 2.9 MPa, and a fire resistance limit of 128 min.

[0064] Example 10 A method for preparing an integrated sound insulation and heat preservation board based on solid carbon fiber board is the same as that in Example 1, except that the amount of silica fume is replaced with 5g.

[0065] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 10 was tested to be 12.3 kg / m³. 2 The flexural strength is 21.8 MPa, the weighted sound insulation (Rw) is 42 dB, the thermal conductivity (λ) is 0.048 W / (m·K), the coating adhesion is 2.1 MPa, and the fire resistance limit is 105 min.

[0066] Example 11 A method for preparing an integrated sound insulation and heat preservation panel based on solid carbon fiber board is the same as that in Example 1, except that the amount of silica fume is replaced with 15g.

[0067] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 11 was tested to be 12.5 kg / m³. 2 The flexural strength is 22.0 MPa, the weighted sound insulation (Rw) is 43 dB, the thermal conductivity (λ) is 0.047 W / (m·K), the coating adhesion is 2.7 MPa, and the fire resistance limit is 122 min.

[0068] Example 12 A method for preparing an integrated sound insulation and heat preservation panel based on solid carbon fiber board is the same as that in Example 1, except that the molding pressure is replaced with 5.0 MPa.

[0069] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 12 was tested to be 11.8 kg / m³. 2 It has a flexural strength of 18.3 MPa, a weighted sound insulation (Rw) of 42 dB, a thermal conductivity (λ) of 0.048 W / (m·K), a coating adhesion of 2.4 MPa, and a fire resistance limit of 106 min.

[0070] Example 13 A method for preparing an integrated sound insulation and heat preservation panel based on solid carbon fiber board is the same as that in Example 1, except that the molding pressure is replaced with 30.0 MPa.

[0071] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 13 was tested to be 13.2 kg / m³. 2 It has a flexural strength of 24.2 MPa, a weighted sound insulation (Rw) of 43 dB, a thermal conductivity (λ) of 0.045 W / (m·K), a coating adhesion of 2.5 MPa, and a fire resistance limit of 115 min.

[0072] Example 14 A method for preparing an integrated sound insulation and heat preservation panel based on solid carbon fiber board, the specific steps of which are as follows: (1) Weigh 20g of basalt fiber (9mm in length and 13μm in diameter) and 80g of pretreated magnesium slag (the Pidgeon process magnesium slag was aged outdoors for 30 days and then ground to a specific surface area of ​​520 m²). 2 / kg), 10g fly ash (Grade II, specific surface area 420m²) 2 Add ( / kg) to a high-speed mixer and dry mix at 140 r / min for 12 min to obtain a uniform dry powder mixture; add 32 g of water to the dry powder mixture and stir at 285 r / min for 10 min using a cement mortar mixer to prepare a uniform substrate slurry. 50 wt% of substrate slurry was injected into a mold, filtered for 2 minutes, and the moisture content was controlled at 20% to form the first wet blank; a 30 mm thick foam ceramic board (density 250 kg / m³) was then laid on the first wet blank. 3 The remaining substrate slurry is injected into the mold to cover the foam ceramic board, and the filtration process is repeated to form a second wet blank with a moisture content of 20%, thus obtaining the substrate slurry sandwich layer. Weigh 50g of γ-C2S (specific surface area of ​​550 m²) 2 0.3g of hydroxypropyl methylcellulose (HPMC) was added to a high-speed disperser and dry-mixed evenly. Then, 40g of water was added and stirred to prepare a carbon mineralization coating. (2) The substrate slurry sandwich layer is cold-pressed for 3 minutes at room temperature and 15.0 MPa pressure. The formed blank is sent into a carbon mineralization curing kettle and cured for 48 hours under conditions of CO2 concentration of 40%, temperature of 70℃ and relative humidity of 80%. The carbon mineralization coating is sprayed onto the surface of the cured substrate slurry sandwich layer using an airless spraying device. The wet film thickness is 1.0 mm. Then, the water is controlled for 1 hour under ventilation at 50℃. Finally, the sample is cured for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0073] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 14 was tested to be 12.8 kg / m³. 2 The flexural strength is 16.5 MPa, the weighted sound insulation (Rw) is 42 dB, the thermal conductivity (λ) is 0.048 W / (m·K), the coating adhesion is 2.3 MPa, and the fire resistance limit is 105 min.

[0074] Example 15 A method for preparing an integrated sound insulation and heat preservation panel based on solid carbon fiber board, the specific steps of which are as follows: (1) Weigh 20g of basalt fiber (9mm in length and 13μm in diameter) and 70g of pretreated steel slag (the converter steel slag is subjected to magnetic separation and steam treatment (95℃, 8 hours) and then ground to a specific surface area of ​​550 m²). 2 / kg), 15g fly ash (Grade II, specific surface area 420m²) 2 Add ( / kg) to a high-speed mixer and dry mix at 140 r / min for 12 min to obtain a uniform dry powder mixture; add 35 g of water to the dry powder mixture and stir at 285 r / min for 10 min using a cement mortar mixer to prepare a uniform substrate slurry. 50 wt% of substrate slurry was injected into a mold, filtered for 2 minutes, and the moisture content was controlled at 20% to form the first wet blank; a 30 mm thick foam ceramic board (density 250 kg / m³) was then laid on the first wet blank. 3 The remaining substrate slurry is injected into the mold to cover the foam ceramic board, and the filtration process is repeated to form a second wet blank with a moisture content of 20%, thus obtaining the substrate slurry sandwich layer. Weigh 50g of γ-C2S (specific surface area of ​​550 m²) 2 0.3g of hydroxypropyl methylcellulose (HPMC) was added to a high-speed disperser and dry-mixed evenly. Then, 40g of water was added and stirred to prepare a carbon mineralization coating. (2) The substrate slurry sandwich layer is cold-pressed for 3 minutes at room temperature and 15.0 MPa pressure. The formed blank is sent into a carbon mineralization curing kettle and cured for 48 hours under conditions of CO2 concentration of 40%, temperature of 70℃ and relative humidity of 80%. The carbon mineralization coating is sprayed onto the surface of the cured substrate slurry sandwich layer using an airless spraying device. The wet film thickness is 1.0 mm. Then, the water is controlled for 1 hour under ventilation at 50℃. Finally, the sample is cured for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0075] The areal density of the integrated sound insulation and heat preservation panel prepared in Example 15 was tested to be 13.0 kg / m³. 2 The flexural strength is 18.0 MPa, the weighted sound insulation (Rw) is 43 dB, the thermal conductivity (λ) is 0.047 W / (m·K), the coating adhesion is 2.4 MPa, and the fire resistance limit is 108 min.

[0076] Comparative Example 1 A method for preparing an integrated sound insulation and heat preservation panel, the specific steps of which are as follows: (1) Weigh 20g of basalt fiber, 50g of carbide slag and 15g of fly ash and add them to a cement mortar mixer. Dry mix at 140 r / min for 12 min to obtain a uniform dry powder mixture.

[0077] (2) Add 30g of water to the dry powder mixture and stir for 10 minutes at a speed of 285r / min using a cement mortar mixer to make a uniform fiber-reinforced paste.

[0078] (3) Inject 50% of the slurry into the mold, filter it under 0.5MPa pressure for 2 minutes, and then dry it at 50℃ for 30 minutes, controlling the moisture content to 20%, to form the lower substrate.

[0079] (4) Lay a 30mm thick foam ceramic board (density 250kg / m³) on the lower substrate. 3 ).

[0080] (5) Inject the remaining slurry into the mold to cover the intermediate layer, and repeat the filtration and drying process to form the upper substrate.

[0081] (6) The three-layer structure was cold-pressed at room temperature and 15.0 MPa pressure for 3 minutes.

[0082] (7) The formed slab is sent into the carbon mineralization curing kettle and cured for 48 hours under the conditions of CO2 concentration of 40%, temperature of 70℃ and relative humidity of 80%.

[0083] (8) Weigh 50g γ-C2S, 10g silica fume, 0.4g dispersant (DW-60, Xintai Chemical (China) Co., Ltd.), 0.15g organosilicon defoamer and 0.3g HPMC and add them to a high-speed disperser to dry mix evenly. Then add 40g water and stir to make a uniform coating.

[0084] (9) Use an airless spraying device to spray the coating onto the substrate surface, with a wet film thickness of 1.0 mm, and then control the water for 1 hour under ventilation at 50°C.

[0085] (10) Curing the slab for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0086] The areal density of the sound insulation and heat insulation integrated panel prepared in Comparative Example 1 was tested to be 10.8 kg / m³. 2 The flexural strength is 11.2 MPa, the weighted sound insulation (Rw) is 38 dB, the thermal conductivity (λ) is 0.052 W / (m·K), the coating adhesion is 1.5 MPa, and the fire resistance limit is 65 min.

[0087] Comparative Example 2 A method for preparing an integrated sound insulation and heat preservation panel, the specific steps of which are as follows: (1) Weigh 20g of basalt fiber, 95g of carbide slag and 15g of fly ash and add them to a cement mortar mixer. Dry mix at 140 r / min for 12 min to obtain a uniform dry powder mixture.

[0088] (2) 30g of water was added to the dry powder mixture and stirred for 10 minutes at 285r / min using a cement mortar mixer. It was found that the slurry was too viscous to be cast and molded, so no complete sample for testing could be made. Relevant performance data could not be obtained.

[0089] Comparative Example 3 (1) Weigh 5g of basalt fiber, 75g of carbide slag and 15g of fly ash and add them to a cement mortar mixer. Dry mix at 140 r / min for 12 min to obtain a uniform dry powder mixture.

[0090] (2) Add 30g of water to the dry powder mixture and stir for 10 minutes at a speed of 285r / min using a cement mortar mixer to make a uniform fiber-reinforced paste.

[0091] (3) Inject 50% of the slurry into the mold, filter for 2 minutes, and then dry at 50°C for 30 minutes, controlling the moisture content to 20%, to form the lower substrate.

[0092] (4) Lay a 30mm thick foam ceramic board (density 250 kg / m³) on the lower substrate. 3 ).

[0093] (5) Inject the remaining slurry into the mold to cover the intermediate layer, and repeat the filtration and drying process to form the upper substrate.

[0094] (6) The three-layer structure was cold-pressed at room temperature and 15.0 MPa pressure for 3 minutes.

[0095] (7) The formed slab is sent into the carbon mineralization curing kettle and cured for 48 hours under the conditions of CO2 concentration of 40%, temperature of 70℃ and relative humidity of 80%.

[0096] (8) Weigh 50g γ-C2S, 10g silica fume, 0.4g dispersant (DW-60, Xintai Chemical (China) Co., Ltd.), 0.15g organosilicon defoamer and 0.3g HPMC and add them to a high-speed disperser to dry mix evenly. Then add 40g water and stir to make a uniform coating.

[0097] (9) Use an airless spraying device to spray the coating onto the substrate surface, with a wet film thickness of 1.0 mm, and then control the water for 1 hour under ventilation at 50°C.

[0098] (10) Curing the slab for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0099] The areal density of the sound insulation and heat insulation integrated panel prepared in Comparative Example 3 was tested to be 10.5 kg / m³. 2 The flexural strength is 12.5 MPa, the weighted sound insulation (Rw) is 40 dB, the thermal conductivity (λ) is 0.050 W / (m·K), the coating adhesion is 1.8 MPa, and the fire resistance limit is 85 min.

[0100] Comparative Example 4 A method for preparing an integrated sound insulation and heat preservation panel, the specific steps of which are as follows: (1) Weigh 35g of basalt fiber, 75g of carbide slag and 15g of fly ash and add them to a cement mortar mixer. Dry mix at 140 r / min for 12 min to obtain a uniform dry powder mixture.

[0101] (2) Add 30g of water to the dry powder mixture and stir for 10 minutes at a speed of 285r / min using a cement mortar mixer. It was found that fiber agglomeration occurred in the slurry, making it impossible to achieve uniform spreading and molding. The product had serious defects and no system performance test was conducted.

[0102] Comparative Example 5 A method for preparing an integrated sound insulation and heat preservation panel, the specific steps of which are as follows: (1) The substrate slurry sandwich layer prepared in Example 1 was cold-pressed for 3 minutes at room temperature and 15.0 MPa pressure. The molded slab was then sent into a carbon mineralization curing kettle and cured for 48 hours at a CO2 concentration of 40%, a temperature of 70°C, and a relative humidity of 80%.

[0103] (2) Weigh 30g γ-C2S, 10g silica fume, 0.4g dispersant (DW-60, Xintai Chemical (China) Co., Ltd.), 0.15g organosilicon defoamer and 0.3g HPMC and add them to a high-speed disperser to dry mix evenly. Then add 40g water and stir to make a uniform coating.

[0104] (3) Use an airless spraying device to spray the coating onto the surface of the substrate sandwich layer after curing in step (1), with a wet film thickness of 1.0 mm, and then control the water for 1 hour under ventilation at 50°C.

[0105] (4) Curing the slab for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0106] The areal density of the sound insulation and heat insulation integrated panel prepared in Comparative Example 5 was tested to be 12.3 kg / m³. 2 The flexural strength is 21.0 MPa, the weighted sound insulation (Rw) is 43 dB, the thermal conductivity (λ) is 0.047 W / (m·K), the coating adhesion is 1.1 MPa, and the fire resistance limit is 80 min.

[0107] Comparative Example 6 A method for preparing an integrated sound insulation and heat preservation panel, the specific steps of which are as follows: (1) The substrate slurry sandwich layer prepared in Example 1 was cold-pressed for 3 minutes at room temperature and 15.0 MPa pressure. The molded slab was then sent into a carbon mineralization curing kettle and cured for 48 hours at a CO2 concentration of 40%, a temperature of 70°C, and a relative humidity of 80%.

[0108] (2) Weigh 70g γ-C2S, 10g silica fume, 0.4g dispersant (DW-60, Xintai Chemical (China) Co., Ltd.), 0.15g organosilicon defoamer and 0.3g HPMC and add them to a high-speed disperser to dry mix evenly. Then add 40g water and stir to make a uniform coating.

[0109] (3) Use an airless spraying device to spray the coating onto the surface of the substrate sandwich layer after curing in step (1), with a wet film thickness of 1.0 mm, and then control the water for 1 hour under ventilation at 50°C.

[0110] (4) Curing the slab for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0111] The coating was too viscous, making it difficult to spray and causing sagging and uneven coating. The coating adhesion test was unsatisfactory (<0.5 MPa), and the fire resistance limit was 92 min (due to uneven coating and localized excessive thickness, cracking and premature failure occurred).

[0112] Comparative Example 7 A method for preparing an integrated sound insulation and heat preservation panel, the specific steps of which are as follows: (1) The Pidgeon process magnesia slag was ground to a specific surface area of ​​520 m². 2 / kg, without aging treatment.

[0113] (2) Weigh 20g of basalt fiber, 80g of pretreated magnesium slag and 10g of fly ash and add them to the cement mortar mixer. Dry mix at 140r / min for 12min, then add 32g of water and stir to make a uniform substrate slurry. 50 wt% of substrate slurry was injected into a mold, filtered for 2 minutes, and the moisture content was controlled at 20% to form the first wet blank; a 30 mm thick foam ceramic board (density 250 kg / m³) was then laid on the first wet blank. 3 The remaining substrate slurry is injected into the mold to cover the foam ceramic board, and the filtration process is repeated to form a second wet blank with a moisture content of 20%, thus obtaining the substrate slurry sandwich layer. Weigh 50g of γ-C2S (specific surface area of ​​550 m²) 2 0.3g of hydroxypropyl methylcellulose (HPMC) was added to a high-speed disperser and dry-mixed evenly. Then, 40g of water was added and stirred to prepare a carbon mineralization coating. (2) The substrate slurry sandwich layer is cold-pressed for 3 minutes at room temperature and 15.0 MPa pressure. The formed blank is sent into a carbon mineralization curing kettle and cured for 48 hours under conditions of CO2 concentration of 40%, temperature of 70℃ and relative humidity of 80%. The carbon mineralization coating is sprayed onto the surface of the cured substrate slurry sandwich layer using an airless spraying device. The wet film thickness is 1.0 mm. Then, the water is controlled for 1 hour under ventilation at 50℃. Finally, the sample is cured for 8 hours under conditions of CO2 concentration of 30%, temperature of 50℃ and relative humidity of 75%.

[0114] The areal density of the sound insulation and heat insulation integrated panel prepared in Comparative Example 7 was tested to be 12.5 kg / m³. 2 The flexural strength is 9.5 MPa, the weighted sound insulation (Rw) is 41 dB, the thermal conductivity (λ) is 0.049 W / (m·K), the coating adhesion is 1.6 MPa, and the fire resistance limit is 88 min. The slab developed a network of cracks after carbonization curing.

[0115] Comparative Example 8 A method for preparing an integrated sound insulation and heat preservation panel differs from Example 1 only in that the cold-pressed board is cured as follows: cured at 70°C and 80% relative humidity for 48 hours, while the remaining steps are the same as in Example 1.

[0116] The areal density of the sound insulation and heat insulation integrated panel prepared in Comparative Example 8 was tested to be 11.5 kg / m³. 2 The flexural strength is 11.5 MPa, the weighted sound insulation (Rw) is 39 dB, the thermal conductivity (λ) is 0.054 W / (m·K), the coating adhesion is 1.7 MPa, and the fire resistance limit is 72 min. The slab structure is porous.

[0117] Comparative Example 9 A method for preparing an integrated sound insulation and heat preservation panel differs from Example 1 only in that the pressing and molding is performed by cold pressing at room temperature and 2.0 MPa pressure for 3 minutes, while the other steps are the same as in Example 1.

[0118] The areal density of the sound insulation and heat insulation integrated panel prepared in Comparative Example 9 was tested to be 11.3 kg / m³. 2 The flexural strength is 13.5 MPa, the weighted sound insulation (Rw) is 40 dB, the thermal conductivity (λ) is 0.051 W / (m·K), the coating adhesion is 1.9 MPa, and the fire resistance limit is 90 min.

[0119] Comparative Example 10 A method for preparing an integrated sound insulation and heat preservation panel differs from Example 1 only in that the pressing and molding is carried out by cold pressing at room temperature and 40.0 MPa pressure for 3 minutes, while the other steps are the same as in Example 1.

[0120] The areal density of the sound insulation and heat insulation integrated panel prepared in Comparative Example 10 was tested to be 13.0 kg / m³. 2 The flexural strength is 15.8 MPa, the weighted sound insulation (Rw) is 43 dB, the thermal conductivity (λ) is 0.046 W / (m·K), the coating adhesion is 2.0 MPa, and the fire resistance limit is 100 min. Excessive moisture was squeezed out of the preform, resulting in insufficient carbonization of the substrate and strength not meeting expectations.

[0121] In summary, the integrated sound insulation and thermal insulation panel prepared by this invention possesses excellent comprehensive performance, with a bending strength of up to 22.1 MPa, a weighted sound insulation of 43 dB, a thermal conductivity as low as 0.047 W / (m·K), and a fire resistance limit exceeding 110 min. This method uses industrial solid waste as the main raw material and constructs a structure-function integrated system through carbon mineralization, achieving the green manufacturing goal of "all solid waste - negative carbon emissions."

[0122] Compared to traditional composite board processes, the stepped carbon mineralization curing process employed in this invention operates under mild conditions, requiring only 60-80°C and normal pressure. This significantly reduces energy consumption and achieves permanent CO2 sequestration. By precisely controlling the raw material ratio and curing parameters, a stable carbonate crystalline framework is formed in the substrate, resulting in a dense calcium carbonate-silica gel composite structure in the coating. This is crucial for the integrated board to achieve superior performance.

[0123] Excessive use of reinforcing fibers in the substrate can lead to poor slurry fluidity and fiber clumping during molding; while insufficient use makes it difficult to form an effective three-dimensional reinforcing network, affecting the crack resistance of the product. Similarly, excessive use of calcium carbide slag can severely affect the workability of the slurry or lead to incomplete carbon mineralization, and improper use of γ-C2S can directly affect the density and fire resistance of the coating. Furthermore, traditional composite panels typically require the addition of large amounts of organic adhesives or complex production processes to ensure interlayer bonding. This invention, through an innovative integrated "filtration-cold pressing-carbonization" process, achieves a strong bond between functional layers with the assistance of a small amount of functional additives. This design method based on the inherent chemical properties of the material provides a new technical path for the development of high-performance green building materials.

[0124] This invention not only realizes the high-value-added resource utilization of industrial solid waste, but also achieves the permanent sequestration of CO2 through carbon mineralization and maintenance technology, enabling the product to have "negative carbon" characteristics throughout its entire life cycle, providing a practical and feasible solution for the low-carbon transformation of the construction industry.

[0125] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A sound insulation and heat preservation integrated panel based on solid carbon fiber board, characterized in that, From bottom to top, it includes a substrate slurry sandwich layer and a carbon mineralization coating; the substrate slurry sandwich layer has a sandwich structure, including a lightweight porous non-combustible core material board in the middle and substrate slurry layers on the upper and lower sides. The substrate paste layer comprises the following components in parts by weight: 10-30 parts high-temperature resistant inorganic fiber, 60-85 parts calcium-magnesium industrial solid waste, 5-20 parts silicon-aluminum industrial solid waste, and 20-40 parts water. The dry density of the lightweight porous non-combustible core material board is ≤300 kg / m³. 3 Thermal conductivity ≤0.065 W / (m·K), combustion performance is A1 grade; The carbon mineralization coating comprises the following components in parts by weight: 40-60 parts of calcareous material with carbon mineralization activity, 5-15 parts of silica-alumina functional filler, 0.1-5 parts of functional additives, and 30-50 parts of water.

2. The sound insulation and heat preservation integrated panel based on solid carbon fiber board according to claim 1, characterized in that, The substrate paste layer comprises the following components in parts by weight: 15-25 parts high-temperature resistant inorganic fiber, 70-80 parts calcium-magnesium industrial solid waste, 10-15 parts silicon-aluminum industrial solid waste, and 25-35 parts water; and / or The carbon mineralization coating comprises the following components in parts by weight: 45-55 parts of calcareous material with carbon mineralization activity, 8-12 parts of aluminosilicate functional filler, 0.5-3 parts of functional additives, and 35-45 parts of water; and / or The high-temperature resistant inorganic fiber is at least one of basalt fiber, carbon fiber and alkali-free glass fiber, with a fiber length of 3~12mm and a single filament diameter of 9~18μm.

3. The sound insulation and heat preservation integrated panel based on solid carbon fiber board according to claim 1, characterized in that, The calcium-magnesium industrial solid waste is at least one of calcium carbide slag, converter steel slag, and magnesium slag; and / or The silicoaluminous industrial solid waste is at least one of fly ash and granulated blast furnace slag powder; and / or The lightweight porous non-combustible core material board is either a foam ceramic board or a foam glass board.

4. The sound insulation and heat preservation integrated panel based on solid carbon fiber board according to claim 1, characterized in that, The core active component of the calcareous material with carbon mineralization activity is γ-C2S; and / or The silica-aluminate functional filler is at least one of silica fume and ultrafine fly ash; and / or The functional additives consist of a dispersant, an antifoamer, and a rheology modifier. The dispersant accounts for 0.2 to 1.0 wt% of the total components of the carbon mineralization coating powder; the antifoamer accounts for 0.1 to 0.5 wt% of the total components of the carbon mineralization coating powder; and the rheology modifier accounts for 0.2 to 1.0 wt% of the total components of the carbon mineralization coating powder.

5. The sound insulation and heat preservation integrated panel based on solid carbon fiber board according to claim 4, characterized in that, The dispersant is an aqueous polymeric dispersant; and / or The defoamer is an organosilicon compound or a polyether-modified organosilicon compound; and / or The rheology modifier is a cellulose ether compound or an associative polyurethane thickener.

6. The method for preparing the sound insulation and heat preservation integrated panel based on solid carbon fiber board according to any one of claims 1 to 5, characterized in that, Includes the following steps: S1. According to the composition ratio, high-temperature resistant inorganic fiber, calcium-magnesium industrial solid waste, silicon-aluminum industrial solid waste and water are mixed evenly to obtain a substrate slurry; 40-50 wt% of the substrate slurry is injected into a mold, filtered and dehydrated, and then dried to obtain a first wet blank with a moisture content of 15-25%; the lightweight porous non-combustible core material board is laid on the first wet blank, and then the remaining substrate slurry is injected, and a second wet blank with a moisture content of 15-25% is prepared under the same conditions to obtain a substrate slurry sandwich layer; According to the stated component ratio, calcium-based materials with carbon mineralization activity, silica-alumina functional fillers, functional additives, and water are mixed evenly to obtain a carbon mineralization coating. S2. After the substrate slurry sandwich layer is pressed into shape, a first stage of carbon mineralization curing is performed; the carbon mineralization coating is applied to the surface of the sample after the first stage of carbon mineralization curing to obtain a carbon mineralization wet coating with a thickness of 0.5~1.5mm. After preliminary hardening, the sample is subjected to a second stage of carbon mineralization curing.

7. The method for preparing the integrated sound insulation and heat preservation panel based on solid carbon fiber board according to claim 6, characterized in that, The substrate slurry described in step S1 is prepared as follows: According to the component ratio, calcium-magnesium industrial solid waste, silicon-aluminum industrial solid waste, and high-temperature resistant inorganic fibers are added to a cement mortar mixer and dry-mixed at a speed of 140-285 r / min for 10-15 min. Then, water is added to the dry mixture, and the mixture is stirred in the cement mortar mixer at a speed of 140-285 r / min for 10-15 min; and / or The carbon mineralization coating described in step S1 is prepared as follows: According to the component ratio, calcium materials with carbon mineralization activity and silica-alumina functional fillers are added to a high-speed disperser and dry-mixed at a speed of 300~500 r / min for 2~3 min. Then, water is added to the mixed dry material and stirred at a speed of 1500~2000 r / min for 10~15 min. Then, functional additives are added, and the speed is gradually increased to 2500~3000 r / min and stirred for 10~15 min.

8. The method for preparing the integrated sound insulation and heat preservation panel based on solid carbon fiber board according to claim 6, characterized in that, The specific operation of pressing the substrate slurry sandwich layer in step S2 is as follows: place the sample in a press and cold press it for 1 to 5 minutes at room temperature under a pressure of 5.0 to 30.0 MPa.

9. The method for preparing the integrated sound insulation and heat preservation panel based on solid carbon fiber board according to claim 6, characterized in that, The specific method for carbon mineralization curing in step S2 is as follows: the sample is placed in an environment with a CO2 volume fraction of 30-60%, a temperature of 60-80℃, and a relative humidity of 70-90% for continuous curing for 24-72 hours; and / or The specific method of the two-stage carbon mineralization curing in step S2 is as follows: place the sample in an environment with a CO2 volume fraction ≥20%, a temperature of 40~60℃, and a relative humidity of 70~85% for continuous curing for 4~12 hours.

10. The application of the sound insulation and heat insulation integrated panel based on solid carbon fiber board as described in any one of claims 1 to 5 in building walls and transportation cabins.