Enhanced heat preservation and insulation part

Abstract

The invention relates to the technical field of heat preservation and insulation wallboards, and provides an enhanced heat preservation and insulation part which comprises a first panel, a second panel and an enhanced heat insulation core. The reinforced heat insulation core body comprises a buffer framework, a first panel buffer piece, a second panel buffer piece, a connecting piece and foam heat insulation concrete; the buffering framework is of an S-shaped continuous bending structure; the first panel buffer piece is inserted into the groove facing the second panel, and the second panel buffer piece is inserted into the groove facing the first panel and fixedly connected with the buffer framework. The first panel buffering piece and the second panel buffering piece are supported on the two faces of the buffering framework, the supporting contact positions are spaced, and stress buffering areas which are arranged in a staggered mode are formed. The thermal insulation performance is improved, the light weight, the water resistance, the ultraviolet resistance and the aging resistance are higher, the wallboard performance is stable, and the stress impact resistance is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of thermal insulation wall panels, and particularly to an enhanced thermal insulation member. Background Art

[0002] A composite thermal insulation wall panel is a non-load-bearing wall member composed of multiple layers of different functional materials through bonding, mechanical connection or casting processes, and has functions such as structural support, thermal insulation, sound insulation, fire protection, and energy storage. Its typical structural layers are as follows: Outer decorative surface: such as metal plate, calcium silicate board or AAC board, providing waterproof, weather-resistant and aesthetic properties.

[0003] Thermal insulation layer: Core thermal insulation materials such as rock wool, XPS / EPS foam board, modified polystyrene particle concrete, etc., with a thermal conductivity as low as 0.12 - 0.175 W / (m·K).

[0004] Skeleton layer: Light steel keel or cold-formed thin-walled steel section, providing structural strength.

[0005] Inner support structure: Lightweight concrete or calcium silicate board, enhancing overall stability.

[0006] Typical products include: AAC composite integrated wall panel: integrating decoration, thermal insulation, fire protection, sound insulation and waterproof functions. Light steel keel composite wall panel: Lightweight concrete is poured in the middle, and the decorative layer is OSB board or gypsum board.

[0007] Rock wool composite wall panel: A combination of lightweight aggregate concrete and rock wool, with a heat transfer coefficient as low as 0.269 W / (m²·K).

[0008] There are prominent problems in current composite thermal insulation wall panels, such as insufficient thermal insulation performance, easy aging of the matrix thermal insulation performance, water absorption, insufficient ultraviolet radiation resistance of organic materials, etc. Material aging and moisture absorption: The thermal conductivity of the thermal insulation material increases after water absorption (for example, the thermal insulation performance of rock wool decreases by 50% after water absorption), and long-term moisture leads to mildew. The splicing of the thermal insulation board is not tight or the fixation is not firm, forming through cracks, affecting the thermal insulation performance. The multi-layer structure is bonded by adhesives, etc., and the aging of the adhesive leads to hollowing, reducing the overall thermal resistance. The difference in the expansion coefficient at the interface of the multi-layer structure causes cracking (such as cracking due to different materials such as the combination of concrete and polystyrene). The metal panel (such as an aluminum plate) has a high thermal conductivity and needs to be paired with a thicker thermal insulation layer.

[0009] During the use of the composite thermal insulation wall panel, since the panel is exposed on the outside and is subjected to external erosion and external forces, stress is inevitably generated. The internal core material is subjected to impact force, and internal stress concentration is likely to occur among different internal materials, which easily leads to cracking of the composite wall panel.

[0010] Steel slag and blast furnace slag are by-products of the iron and steel industry. Replacing traditional aggregates or thermal insulation materials (such as polystyrene boards) can reduce the building material cost by 30%-50%, while reducing land occupation and environmental pollution, meeting the requirements of circular economy. The lightweight characteristics of blast furnace slag (density 1.2-1.8 g / cm³) can reduce the self-weight of the existing building walls. The fire resistance limit of steel slag and blast furnace slag is higher than that of organic thermal insulation materials (such as polystyrene boards), which can avoid the defect of insufficient fire resistance performance of traditional thermal insulation systems. However, steel slag has large chemical stability defects. The residual free calcium oxide (f-CaO) and free magnesium oxide (f-MgO) in it are prone to expansion when encountering water, resulting in wall panel cracking. The too high porosity of blast furnace slag may lead to an increase in water absorption rate and an increase in the complexity of construction processes. The particle size and composition of steel slag and blast furnace slag fluctuate greatly, lacking a unified quality control standard, affecting the performance stability of wall panels and restricting large-scale application.

[0011] During the use of the composite thermal insulation wall panel, it is affected by external forces, water, ultraviolet light irradiation, etc. Due to the multi-layer structure of the composite thermal insulation wall panel, different requirements for each layer, and diverse and complex structures and compositions, the quality improvement and performance stability of the composite thermal insulation wall panel are all challenged. By applying steel slag, blast furnace slag, etc. to the composite thermal insulation wall panel, the cost can be reduced. However, due to different treatment methods, sources, compositions, etc. of steel slag, blast furnace slag, etc., the amount of their use is limited, making it difficult to further utilize this resource and reduce costs. Summary of the Invention

[0012] Overcoming the deficiencies of the prior art, the present application provides an enhanced thermal insulation member, achieving higher thermal insulation performance, lightweight, water resistance, ultraviolet resistance, anti-aging performance, stable wall panel performance, and enhanced anti-impact performance.

[0013] The embodiments of the present application are implemented as follows: The present application example provides an enhanced thermal insulation member, including: A first panel (1) and a second panel (3), connected to both sides of the enhanced heat insulation core (2); The enhanced heat insulation core (2) includes a buffer skeleton (5), a first panel buffer member (4), a second panel buffer member (6), a connecting member (7), and foam insulating concrete; The buffer skeleton (5) has an S-shaped continuously bent structure, forming grooves spaced apart and facing the first panel (1) and grooves facing the second panel (3); The first panel buffer (4) is inserted into the groove facing the second panel (3) and fixedly connected to the buffer skeleton (5); the second panel buffer (6) is inserted into the groove facing the first panel (1) and fixedly connected to the buffer skeleton (5); the first panel buffer (4) and the second panel buffer (6) are supported on both sides of the buffer skeleton (5), and the support contact positions are spaced apart to form staggered force buffer areas (B); the cross-sections of the first panel buffer (4) and the second panel buffer (6) are V-shaped; the first panel buffer (4) and the second panel buffer (6) are connected to the connecting member (7), and the connecting member (7) tightly connects the first panel (1), the second panel (3) and the enhanced heat insulation core (2).

[0014] Optionally, the first panel (1) and the second panel (3) are calcium silicate substrates, and the calcium silicate substrates are composed of the following components in parts by mass: 11-16 parts of cement, 7-9 parts of anti-cracking fiber, 5-8 parts of filler, 1-2 parts of silane coupling agent, 30-37 parts of LF refining slag treated by the air quenching method, 20-35 parts of quartz sand powder, 5-10 parts of slaked lime powder, 6-8 parts of bentonite, and 1-3 parts of flocculant.

[0015] Optionally, the anti-cracking fiber includes carbon fiber and glass fiber, and based on the total mass of the anti-cracking fiber, the mass ratio of the glass fiber to the carbon fiber is 1.3-1.6:1.

[0016] Optionally, the surface roughness of the glass fiber is 10-15 μm.

[0017] Optionally, the filler is alum and aluminum sulfate, and based on the total mass of the filler, the mass ratio of alum to aluminum sulfate is 1.7-2.1:1.

[0018] Optionally, the flocculant is anionic polyacrylamide and sodium silicate, and based on the total mass of the flocculant, the mass ratio of anionic polyacrylamide to sodium silicate is 3.3-4:1.

[0019] Optionally, The buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) are pretreated; the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) are selected as magnetizable thin steel plates with a thickness of less than 2 mm. After the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) are subjected to surface roughening treatment, they are immersed in the bonding enhancement liquid. After the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) obtain magnetism, they are placed for 5-10 minutes and then taken out for semi-curing to achieve the pretreatment of covering the bonding enhancement layer on the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6). Place the pre-treated buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) in a template, and add foam thermal insulation concrete to prepare the enhanced thermal insulation core (2).

[0020] Optionally, by weight, the components of the bonding and strengthening liquid include 30-40 parts of EVA emulsion, 10-15 parts of air-quenched converter steel slag, 10-15 parts of cement, 8-10 parts of fiber, and 5-9 parts of ceramsite.

[0021] Optionally, by weight, the composition of the foam thermal insulation concrete includes: 21-27 parts of cement, 15-23 parts of water-quenched blast furnace slag, 7-10 parts of heat-soaked LF refining slag, 1-2 parts of EVA, 0.3-0.5 parts of fiber, 1-2 parts of bentonite, and 0.1-0.5 parts of foaming agent.

[0022] Optionally, the fiber is one or more of polypropylene fiber, polyethylene fiber, polyacrylonitrile fiber, polyamide fiber, glass fiber, vinylon fiber, plant fiber, and basalt fiber.

[0023] The beneficial effects include: This application provides an enhanced thermal insulation component. The buffer skeleton has an S-shaped continuous bending structure, which is used to enhance the elastic buffer of the thermal insulation core when it is subjected to force impact, absorb and dissipate the force, thereby improving the anti-external force impact performance, enhancing the substrate stability of the thermal insulation core, extending the service life, and improving the anti-bending performance. The first panel buffer and the second panel buffer are inserted into the groove, and the contact positions with the buffer skeleton are far away from the first panel and the second panel, greatly reducing the influence of heat conduction of the buffer skeleton, the first panel buffer, and the second panel buffer, and improving the overall thermal insulation effect. The cross-sections of the first panel buffer and the second panel buffer are V-shaped, which realizes the reverse support of the buffer skeleton in the groove, and the first panel buffer and the second panel buffer support on both sides of the buffer skeleton, and the support contact positions are spaced apart to form an interleaved stress buffer area, which can make the force transfer in different directions such as the buffer skeleton, the first panel buffer, and the second panel buffer, effectively buffer and dissipate the force impact perpendicular to the panel direction when the first panel and the second panel are in use, and extend the force to the inside of the core material for dissipation, thereby greatly improving the impact resistance of the enhanced thermal insulation core, enabling the enhanced thermal insulation core to still have a stable structure during long-term use, extending the service life, and also increasing the anti-bending strength and other properties as a whole. At the same time, the separation of the first panel buffer, the second panel buffer, and the buffer skeleton from the foam thermal insulation concrete breaks the large pieces into small pieces, which is also beneficial to improving the stability of the foam thermal insulation concrete. Description of the Drawings

[0024] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0025] Figure 1 Schematic diagram of a structure of an enhanced thermal insulation member provided by an embodiment of the present application.

[0026] Figure 2 Schematic diagram of a cross-section A of an enhanced thermal insulation member A provided by an embodiment of the present application.

[0027] Reference numerals: 1 - First panel; 2 - Enhanced heat insulation core; 3 - Second panel; 4 - First panel buffer; 5 - Buffer framework; 6 - Second panel buffer; 7 - Connecting member; B - Force buffer zone. Detailed implementation manners

[0028] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0029] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0030] Those skilled in the art of the present technology can understand that, unless specifically stated, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present invention means the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0031] During the use of composite thermal insulation wall panels, they are vulnerable to external forces, water, ultraviolet light irradiation, etc., which challenges the improvement of the quality, performance stability, anti-aging performance, etc. of the composite thermal insulation wall panels; it is difficult to effectively utilize low-cost resources such as steel slag and blast furnace slag to further reduce costs. Therefore, an embodiment of the present invention provides an enhanced thermal insulation member and a preparation method thereof.

[0032] The following further describes the features and performance of the present application in detail with reference to embodiments: As Figure 1-2 shown, an embodiment of the present application provides an enhanced thermal insulation member and a preparation method thereof, including: The enhanced thermal insulation member can be a thermal insulation wall. In order to facilitate the installation of the enhanced thermal insulation member around the upper, lower, left, and right sides, grooves or protrusions are provided as needed to realize the installation of multiple insulation members, which are not shown here.

[0033] The first panel 1 and the second panel 3 are connected to both sides of the enhanced heat insulation core 2 to protect the enhanced heat insulation core 2, prevent the enhanced heat insulation core 2 from cracking or falling off, resist external environmental erosion (such as rainwater and ultraviolet rays), extend the service life of the enhanced heat insulation core 2, and at the same time play the device function.

[0034] The first panel 1 and the second panel 3 are connected to both sides of the enhanced heat insulation core 2 by mechanical fixing (such as connecting with connectors such as wire mesh frames, adhesives, bolts, etc.) to ensure close combination with the enhanced heat insulation core 2.

[0035] The first panel 1 and the second panel 3 can be a composite structure of color steel plate / aluminum plate and polyurethane foam board, and a high-strength thermal insulation panel is formed by the composite of polyurethane foam board with high thermal insulation performance and a metal plate with high strength (with radiation reflection). It can be a glass fiber reinforced concrete board, calcium silicate board, gypsum board, etc.

[0036] Preferably, the calcium silicate board is composed of the following components in parts by mass: 11-16 parts of cement, 7-9 parts of anti-cracking fiber, 5-8 parts of filler, 1-2 parts of silane coupling agent, 30-37 parts of LF refining slag treated by air quenching method, 20-35 parts of quartz sand powder, 5-10 parts of slaked lime powder, 6-8 parts of bentonite, and 1-3 parts of flocculant. The specific method for preparing the calcium silicate board from the above components in parts by mass is not limited, and existing calcium silicate board preparation methods can be used. In addition, water, additives, etc. can be added as needed during the preparation process.

[0037] The cement is selected as ordinary Portland cement; the quartz sand powder (SiO 2 content ≥ 93%) is used as one of the main aggregates to provide a rigid skeleton support, significantly improving the compressive strength and wear resistance of the substrate. Its high hardness (Mohs hardness 7) can reduce surface wear during processing and use. Slaked lime (Ca(OH)2 ) Provide CaO component, which reacts with SiO in quartz sand 2 to undergo a hydrothermal synthesis reaction under humid and hot conditions to generate calcium silicate (CaSiO 3 ), and C-S-H gel, forming a matrix gel network structure, endowing the substrate with initial strength and long-term stability.

[0038] The anti-cracking fibers can be selected as: cellulose fibers, carbon fibers, glass fibers, etc.; an appropriate amount of anti-cracking fibers is used. The anti-cracking fibers significantly improve the flexural strength, impact resistance and anti-cracking property of the panel by dispersing stress and inhibiting crack propagation, ensuring the structural integrity of the core board under complex stresses; reducing the shrinkage and expansion of the calcium silicate substrate caused by temperature and humidity changes, reducing the risk of deformation, especially suitable for environments with large temperature differences or humidity. The substrate is easier to cut, drill, and the edges are not prone to chipping.

[0039] Preferably: it includes carbon fibers and glass fibers. Based on the total mass of the anti-cracking fibers, the mass ratio of glass fibers to carbon fibers is: 1.3 - 1.6:1; carbon fibers provide high strength (tensile strength exceeding that of steel) and high modulus (excellent rigidity), while glass fibers significantly improve the impact resistance and anti-cracking property of the hybrid material by dispersing stress and enhancing toughness. Carbon fibers can inhibit the propagation of microcracks, while glass fibers absorb impact energy through plastic deformation, forming a "rigid-flexible combination" strengthening effect. Compared with carbon fibers, due to their high rigidity and strong fiber orientation, the stress dispersion effect is relatively weak. By using a higher proportion of glass fibers, the glass fibers form a dense short-cut fiber network in the calcium silicate matrix, effectively reducing local stress concentration by dispersing external loads in multiple directions, thus significantly enhancing the flexural strength of the panel; the surface of glass fibers is rougher than that of carbon fibers and is closer to the substances in the calcium silicate system, having a stronger bonding strength and being able to transfer loads more efficiently; at the same time, the thermal expansion coefficient is closer to that of the matrix, also improving the stability of the material. Through acid-base treatment, the surface roughness of glass fibers can be increased. When the surface roughness (Ra value) of glass fibers is 10 - 15μm, the bonding with the matrix can be significantly improved through mechanical interlocking.

[0040] The fillers can be selected as alum (potassium alum) and aluminum sulfate; after hydrolysis, alum (potassium alum) and aluminum sulfate generate aluminum hydroxide colloid, filling the pores of the calcium silicate matrix, reducing the porosity, and enhancing the flexural strength of the panel. The thermal conductivity of the aluminum sulfate filler is low (about 0.2W / (m·K)), which is beneficial to improving the heat insulation effect. The K in alum + and the Al in aluminum sulfate 3+ are combined with the calcium silicate matrix (containing Ca 2+ ) through ion exchange to form a more stable aluminosilicate network structure, which is beneficial to enhancing the matrix strength. At the same time, the above ions adjust the surface charge of the matrix, neutralizing the Cl in the environment -Erosive ions such as these reduce the corrosion rate of the panel in a humid environment; the colloid produced by the hydrolysis of alum can reduce the viscosity of the slurry, while aluminum sulfate promotes the dispersion of anti-cracking fibers through the charge effect of Al 3+ The charge effect promotes the dispersion of anti-cracking fibers. The combination of the two is conducive to improving the formability of the matrix and the uniformity of material dispersion; the weak acidic hydrolysis characteristics of alum (potassium alum) and aluminum sulfate are also beneficial to the panel's resistance to alkalinity and extend its service life. Preferably: based on the total mass of the filler, the mass ratio of alum to aluminum sulfate is 1.7 - 2.1:1; increasing the amount of alum is beneficial to reducing the viscosity of the slurry, adjusting the ions to regulate the surface charge of the matrix, facilitating a more stable aluminosilicate network structure, enhancing the strength of the matrix, and further reducing the corrosion rate of the panel in a humid environment.

[0041] 1 - 2 parts of silane coupling agent can improve the bonding between components, facilitate the uniform dispersion of substances, and improve properties such as strength. Commercially available products can be selected.

[0042] The flocculant promotes the uniform aggregation of fine particles (such as calcium silicate, fibers, etc.) in the substrate slurry through charge neutralization and adsorption bridging, reducing the porosity. Commercially available products for calcium silicate boards can be used. Preferably: anionic polyacrylamide and sodium silicate are used. The molecular weight of anionic polyacrylamide is 15 million - 17 million. Anionic polyacrylamide adsorbs anti-cracking fibers and matrix particles through long-chain molecules, enhancing the interfacial bonding strength, and has a wide pH adaptation range (pH 5 - 10), improving the panel's resistance to acidic and alkaline environments. Sodium silicate generates silicic acid gel to enhance the compactness of the matrix and simultaneously adsorbs Cl - Erosive ions such as these and extend the service life of the substrate. Preferably, based on the total mass of the flocculant, the mass ratio of anionic polyacrylamide to sodium silicate is 3.3 - 4:1; by increasing the amount of anionic polyacrylamide, it is more conducive to adsorbing anti-cracking fibers and matrix particles, enhancing the interfacial bonding strength, and improving mechanical properties and acid and alkali resistance.

[0043] Bentonite forms a thixotropic colloid by adsorbing water molecules, reduces the viscosity fluctuation of the slurry, improves the wetting uniformity of fibers and slag powder, and avoids delamination defects; by adding a high proportion relative to the usage amounts of anti-cracking fibers and slag powder, it is conducive to the uniform mixing of the system and improves performance.

[0044] The addition of LF refining slag treated by the air quenching method is beneficial to reducing costs and turning waste into treasure. The LF refining slag treated by the air quenching method is rapidly solidified by high-speed air cooling, inhibiting the reaction between CaO and SiO 2The slow crystallization reaction promotes the formation of amorphous calcium silicate. This glass phase has a dense structure that can encapsulate free CaO, reducing its reactivity with water. Its glass phase structure is conducive to reducing porosity, improving heat insulation performance, enhancing compressive and flexural properties. At the same time, its composition can significantly reduce the use of processed products such as quartz sand powder, slaked lime, and cement. The rapid cooling during air quenching treatment inhibits the precipitation of unstable phases such as highly reactive calcium aluminate (such as CaO·Al 2 O 3 ), or free CaO in the slag; LF refining slag usually has a high alkalinity (CaO / SiO 2 ≥3), providing sufficient CaO and SiO 2 raw materials for the formation of calcium silicate. Under air quenching conditions, it directly reacts to form stable silicates such as 2CaO·SiO 2 or 3CaO·SiO 2 and others, which directly or indirectly serve as important components of the calcium silicate matrix. The appropriate amount of Al 2 O 3 contained therein (such as 15 - 20%) can form composite minerals with calcium silicate (such as calcium aluminates, which have a spinel structure and can absorb energy in the ultraviolet band (200 - 400 nm), reducing the direct damage of ultraviolet rays to the matrix. This may be the reason for the improvement of the matrix's anti-ultraviolet aging). It further improves the stability of calcium silicate, reduces the hydration risk, and enhances the anti-aging property; during the LF furnace refining process, the reducing slag system (LF refining white slag) reduces the content of oxidizing components such as FeO and MnO in the slag, avoiding their competitive reaction with CaO, which is conducive to ensuring the preferential formation of calcium silicate and has more advantages than other types of metallurgical slag. Preferably: The composition of the LF refining slag treated by the air quenching method includes: CaO 50% - 60%, SiO 2 6% - 10%, Al 2 O 3 18% - 28%, FeO 1 - 2%. A high Al 2 O 3 content results in a denser glass phase network structure, reducing the interfacial defects of light scattering. The combination of high Al 2 O 3 content + high alkalinity can simultaneously inhibit the formation of FeO, facilitate the formation of a uniform closed pore structure, improve the heat insulation performance, have a certain ability to improve the anti-ultraviolet ability, and is beneficial to improving the anti-aging performance of the panel.

[0045] The heat insulation core 2 is enhanced and includes a buffer skeleton 5, a first panel buffer member 4, a second panel buffer member 6, a connecting member 7, and foam insulating concrete.

[0046] The buffer framework 5 has an S-shaped continuously bent structure, forming grooves spacedly facing the first panel 1 and the second panel 3, which are used to enhance the elastic buffer of the heat insulation core 2 when subjected to force impacts, absorb and dissipate the force, thereby improving the anti-external force impact performance, enhancing the substrate stability of the heat insulation core 2, prolonging the service life, and improving the folding resistance performance. Optionally, the buffer framework 5 is a metal framework with a plate structure, preferably a magnetizable thin steel plate. The thin steel plate has the dual advantages of higher strength and toughness, which is beneficial to reducing the thin steel plate. The reduction of the thickness of the thin steel plate is conducive to reducing the weight, and at the same time reducing the influence of high metal thermal conductivity on the heat insulation performance of the enhanced thermal insulation component. The thickness of the steel plate can be selected to be less than 2 mm. The use of the buffer framework 5 can replace the supporting function of frameworks such as threaded steel, and replace or reduce the addition of fibers in the foam heat insulation concrete. Due to its characteristics, the fibers in the foam heat insulation concrete are often not easily mixed evenly with other components of the foam heat insulation concrete, thereby increasing the risk of reducing the core structure stability.

[0047] The first panel buffer 4 is inserted into the groove facing the second panel 3 and fixedly connected to the buffer framework 5 for supporting the buffer framework 5; the second panel buffer 6 is inserted into the groove facing the first panel 1 and fixedly connected to the buffer framework 5 for supporting the buffer framework 5; the fixed connection method can be welding, bonding, etc., which is not limited herein; the first panel buffer 4 and the second panel buffer 6 are supported on both sides of the buffer framework 5, and the supporting contact positions are spaced apart, forming a force buffer area B arranged in a staggered manner as shown in Figure 2 The first panel buffer 4 and the second panel buffer 6 are structures such as plates or rods, which only need to play a role in supporting and relieving the force, and are not limited herein. Preferably, they are thin steel plate structures matching the buffer framework 5; the cross-sections of the first panel buffer 4 and the second panel buffer 6 are V-shaped to form an effective support for the buffer framework 5. With the thin plate design of the buffer framework 5, a support and fixation structure is arranged in the enhanced heat insulation core 2. If the support and fixation structure is fixed close to the positions of the first panel 1 and the second panel 3, due to the heat conduction effect of the buffer framework 5, the overall heat conduction performance will be greatly affected. The first panel buffer 4 and the second panel buffer 6 are inserted into the grooves, and the contact positions with the buffer framework 5 are far from the first panel 1 and the second panel 3, greatly reducing the heat conduction influence of the buffer framework 5 and the first panel buffer 4 and the second panel buffer 6, and improving the overall heat insulation and heat preservation effect. The cross-sections of the first panel buffer 4 and the second panel buffer 6 are V-shaped, realizing the reverse support of the buffer framework 5 in the groove, and the first panel buffer 4 and the second panel buffer 6 are supported on both sides of the buffer framework 5, and the supporting contact positions are spaced apart, forming a force buffer area B arranged in a staggered manner as shown in Figure 2The stress buffer zones B are arranged alternately in the middle. Since the first panel 1 and the second panel 3 are more likely to be subjected to stress impacts perpendicular to the panel direction during use, the above structure can transfer the stress to the inside of the enhanced heat-insulating core 2, and can transfer the stress in different directions such as the buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6. It can effectively buffer and dissipate the stress impacts perpendicular to the panel direction received by the first panel 1 and the second panel 3 during use, and extend the stress to the inside of the core material for dissipation. Thus, the impact resistance ability of the enhanced heat-insulating core 2 is greatly improved, so that the enhanced heat-insulating core 2 can still maintain a stable structure and extend its service life during long-term use, and also increases the performance such as flexural strength as a whole. At the same time, the separation of the foam heat-insulating concrete by the first panel buffer member 4, the second panel buffer member 6, and the buffer framework 5 breaks the large pieces into small pieces, which is also beneficial to improving the stability of the foam heat-insulating concrete.

[0048] Optionally, the first panel buffer member 4 and the second panel buffer member 6 are connected to the connecting member 7, and the connection method can be a fixed connection method (such as welding, etc.). The connecting member 7 can be a structure such as a bolt, which is used to tightly connect the first panel 1, the second panel 3 and the enhanced heat-insulating core 2. At the same time, the connecting member 7 can play a role in transferring the stress of the first panel 1 and the second panel 3 to the first panel buffer member 4 and the second panel buffer member 6. The assembly and preparation methods of the above components are not specifically limited, and existing known methods can be adopted.

[0049] Optionally, the buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6 are pretreated; the buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6 are selected as magnetizable thin steel plates, and the thin steel plates are subjected to surface roughening treatment, and the roughening can be carried out by shot peening or other methods. The buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6 are immersed in the bonding enhancement liquid, contacted with a high-magnetic force magnet, magnetized by energizing, etc., and then taken out after being placed for 5-10 minutes for semi-curing to form a bonding enhancement layer covering the buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6. The buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6 are covered with a bonding enhancement layer, which is beneficial to the bonding strength with the foam heat-insulating concrete and improves the stability of the core layer material.

[0050] By weight, the components of the bonding enhancement liquid include 30-40 parts of EVA emulsion, 10-15 parts of air-quenched converter steel slag, 10-15 parts of cement, 8-10 parts of fiber, and 5-9 parts of ceramsite.

[0051] EVA is the abbreviation of ethylene-vinyl acetate copolymer. The EVA emulsion enhances the bonding property, and at the same time makes the bonding enhancement layer elastic, which is beneficial to improving its buffer stress effect and is not easy to generate cracks during stress buffering.

[0052] The addition of air-cooled converter steel slag, cement, fiber, and ceramsite is a component within the foam thermal insulation concrete, which facilitates the realization of a gradient transition in composition between the bonding enhancement layer and the foam thermal insulation concrete, improves the bonding interface strength, and enhances the material stability.

[0053] The fiber can be selected from polypropylene fiber, polyethylene fiber, polyacrylonitrile fiber, polyamide fiber, plant fiber, etc., to improve the elastic buffering ability and the layer stability of the bonding enhancement layer.

[0054] The air-cooled converter steel slag has a high total iron (TFe) content in the converter steel slag, between 20% - 35%. In the slag, there is metallic iron (7 - 10%), and the content of ferric oxide can reach more than 20%. The calcium oxide, silicon dioxide, etc. it contains are similar to the main components in the foam thermal insulation concrete. When the air-cooled converter steel slag is added, the magnetic buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 6 are immersed in the bonding enhancement liquid, which can cause the air-cooled converter steel slag in the bonding enhancement liquid to gather on the surfaces of the buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 6. Thus, a bonding enhancement layer with a gradient transition is formed, where the components of the air-cooled converter steel slag are more on the surfaces close to the buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 6, and less in the outer layer. The air-cooled converter steel slag is harder and is compatible with the metal plate component. The outer layer has more components such as EVA, with good adhesiveness and reduced hardness, which is more conducive to improving the bonding strength between the buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 6 and the foam thermal insulation concrete, and enhancing the stability of the enhanced thermal insulation core 2.

[0055] Furthermore, the pretreated buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 6 are placed in a mold, and foam thermal insulation concrete is added to prepare the enhanced thermal insulation core 2. The foam thermal insulation concrete can be existing foamed foam concrete.

[0056] Preferably, by weight, the composition of the foam thermal insulation concrete includes: 21 - 27 parts of cement, 15 - 23 parts of water-quenched blast furnace slag, 7 - 10 parts of heat-soaked LF refining slag, 1 - 2 parts of EVA, 0.3 - 0.5 parts of fiber, 1 - 2 parts of bentonite, and 0.1 - 0.5 parts of foaming agent. The foaming method of the foam thermal insulation concrete adopts known methods and is not specifically limited herein.

[0057] The cement adopts commercially available high-grade Portland cement, etc., and is not specifically limited herein.

[0058] The fiber can be selected from one or more of polypropylene fiber, polyethylene fiber, polyacrylonitrile fiber, polyamide fiber, glass fiber, vinylon fiber, plant fiber, and basalt fiber.

[0059] The foam stabilizer can be selected from one or more of cellulose ether, alkylphenol polyoxyethylene ether, polyvinyl alcohol, polyacrylamide, and ethanolamine.

[0060] The foaming agent can be selected from sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, animal protein foaming agent, hydroxyethyl cellulose, soybean protein foaming agent, etc.

[0061] Bentonite forms a thixotropic colloid by adsorbing water molecules, reduces the viscosity fluctuation of the slurry, improves the wetting uniformity of fibers and slag powder, and avoids delamination defects. Granulated blast furnace slag forms a honeycomb-like porous structure after being rapidly quenched with water in a high-temperature molten state. The porosity is as high as 30% - 50%, and the interior is filled with closed pores and micropores. This structure can effectively block the heat conduction path, and air forms a static heat insulation layer in the pores. The bulk density of granulated slag is low, effectively reducing the weight. The granulation process makes the content of active substances (such as free calcium oxide and magnesium oxide) in the slag extremely low (f-CaO < 1%), avoiding swelling and cracking due to water absorption in the later stage. The vitreous structure is resistant to acid and alkali corrosion and can extend the service life. A small amount of heat-soaked converter slag is added, which is relatively close to the composition of air-cooled converter slag, facilitating the enhancement of the interfacial bonding strength.

[0062] The use of heat-soaked LF refining slag, through the heat-soaking method, which uses steam spraying and self-dissolution by waste heat, results in a high pulverization rate of LF refining slag (85% with a particle size below 20 mm), and the contents of free calcium oxide (f-CaO) and free magnesium oxide (f-MgO) are lower than 2%, significantly reducing the risk of later expansion of the material and improving long-term stability. The fine particle structure of heat-soaked slag can fill the pores of the thermal insulation material, reduce the thermal conductivity, and reduce heat convection loss. The heat-soaked LF refining slag contains tricalcium silicate (C 3 S) and dicalcium silicate (C 2 S), which has cement-like gelling properties, can enhance the compactness of the wall structure. At the same time, its highly alkaline surface can adsorb water and gas, reducing the thermal bridge effect. The high alkalinity (CaO / SiO 2 ≥3) and stable silicate-aluminate phase of LF refining slag can serve as a reinforcing framework to improve the matrix strength; the content of iron oxide (FeO) in heat-soaked LF refining slag is low (usually < 3%), which can reduce the risk of generating hydration products such as Fe(OH) 2 or Fe(OH) 3 after contact with water, avoiding internal stress concentration and cracking of concrete caused by volume expansion. That is, by selecting different metallurgical slags through specific treatment methods for compounding, using the granulated blast furnace slag and LF refining slag in the granulation or heat-soaking treatment methods, reducing the hydration risk, and due to the different pore rates and compactness degrees of their respective minerals, taking advantage of their respective characteristics, the utilization ratio of metallurgical slag is increased, the adverse effects of using single or inappropriate types of slag are reduced, the utilization potential of metallurgical slag can be improved, which is conducive to the comprehensive utilization of resources and also conducive to fully exploring the potential of cost reduction.

[0063] Example 1 An enhanced heat-insulating component, which is a heat-insulating wall body, includes a first panel 1 and a second panel 3, which are connected to both sides of the enhanced heat-insulating core 2. The first panel 1 and the second panel 3 are connected to both sides of the enhanced heat-insulating core 2 through connectors 7.

[0064] The first panel 1 and the second panel 3 are calcium silicate substrates, which are composed of the following components in parts by mass: 15 parts of cement, 8 parts of anti-cracking fiber, 6 parts of filler, 1 part of silane coupling agent, 33 parts of LF refining slag treated by the air quenching method, 23 parts of quartz sand powder, 7 parts of slaked lime powder, 8 parts of bentonite, and 2 parts of flocculant.

[0065] The anti-cracking fiber is carbon fiber and glass fiber. By the total mass of the anti-cracking fiber, the mass ratio of glass fiber to carbon fiber is 1.4:1, and the surface roughness of the glass fiber is 13μm.

[0066] The filler is alum and aluminum sulfate; by the total mass of the filler, the mass ratio of alum to aluminum sulfate is 1.9:1.

[0067] The flocculant uses anionic polyacrylamide and sodium silicate. The molecular weight of the anionic polyacrylamide is 15 million to 17 million. By the total mass of the flocculant, the mass ratio of anionic polyacrylamide to sodium silicate is 3.6:1. The enhanced heat-insulating core 2 includes a buffer skeleton 5, a first panel buffer 4, a second panel buffer 6, a connector 7, and foam heat-insulating concrete. The buffer skeleton 5 is an S-shaped continuously bent structure, which is a magnetizable thin steel plate with a thickness of 1.5mm.

[0068] The first panel buffer 4 and the second panel buffer 6 are supported on both sides of the buffer skeleton 5, and the support contact positions are spaced apart to form a staggered force buffer zone B as shown in Figure 2 The first panel buffer 4 and the second panel buffer 6 are thin steel plate structures matching the buffer skeleton 5; the cross-sections of the first panel buffer 4 and the second panel buffer 6 are V-shaped.

[0069] The buffer skeleton 5, the first panel buffer 4, and the second panel buffer 6 are pretreated; the thin steel plate is subjected to surface roughening treatment, and shot peening is used for roughening. The buffer skeleton 5, the first panel buffer 4, and the second panel buffer 6 are immersed in a bonding enhancement liquid, contacted with a high-magnetic force magnet to obtain magnetism, and then taken out and semi-cured after being placed for 10 minutes, so as to realize that the buffer skeleton 5, the first panel buffer 4, and the second panel buffer 6 are covered with a bonding enhancement layer. By weight, the components of the bonding enhancement liquid include 33 parts of EVA emulsion, 14 parts of air-quenched converter steel slag, 13 parts of cement, 9 parts of fiber, and 7 parts of ceramsite. The fiber is polypropylene fiber.

[0070] Further, the pre-treated buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6 are placed in a template, and foam insulating concrete is added to prepare the enhanced insulating core 2. The foam insulating concrete can be existing foamed foam concrete.

[0071] By weight, the composition of the foam insulating concrete includes: 24 parts of cement, 17 parts of granulated blast-furnace slag, 8 parts of hot-smothered LF refining slag, 2 parts of EVA, 0.4 part of fiber, 2 parts of bentonite, and 0.2 part of foaming agent. The fiber is polypropylene fiber. The foam stabilizer is cellulose ether. The foaming agent is sodium dodecyl benzene sulfonate.

[0072] The enhanced thermal insulation member is tested in accordance with "Lightweight Partition Boards for Buildings" GB / T 23451-2023. The compressive strength is 6.7 MPa, the bending load / self-weight multiple of the board (150 mm) is 5, and after 17 impact resistance tests, there are no cracks on the board surface; the thermal conductivity is 0.11 W / (m·K), and the dry shrinkage is 0.3 mm / m.

[0073] Example 2 It is basically the same as the structure and components of Example 1, and the main difference is that the silicate calcium substrate does not add LF refining slag treated by the air quenching method, and the corresponding components are replaced by cement.

[0074] The enhanced thermal insulation member is tested in accordance with "Lightweight Partition Boards for Buildings" GB / T 23451-2023. The compressive strength is 5.3 MPa, the bending load / self-weight multiple of the board (150 mm) is 4, and after 15 impact resistance tests, there are no cracks on the board surface; the thermal conductivity is 0.12 W / (m·K), and the dry shrinkage is 0.35 mm / m.

[0075] Example 3 It is basically the same as the structure and components of Example 1, and the main difference is that the crack-resistant fibers include carbon fibers and glass fibers. Based on the total mass of the crack-resistant fibers, the mass ratio of the glass fibers to the carbon fibers is 0.4:1.

[0076] The enhanced thermal insulation member is tested in accordance with "Lightweight Partition Boards for Buildings" GB / T 23451-2023. The compressive strength is 6.3 MPa, the bending load / self-weight multiple of the board (150 mm) is 5, and after 14 impact resistance tests, there are no cracks on the board surface; the thermal conductivity is 0.12 W / (m·K), and the dry shrinkage is 0.31 mm / m.

[0077] Example 4 It is basically the same as the structure and components of Example 1, and the main difference is that the buffer framework (5), the first panel buffer member (4), and the second panel buffer member (6) are not pre-treated.

[0078] The enhanced thermal insulation component is tested in accordance with "Lightweight Partition Boards for Buildings" GB / T 23451-2023. Its compressive strength is 6.6 MPa, the multiple of bending load to self-weight of the board (150 mm) is 5, and after 15 impact resistance tests, there are no cracks on the board surface; the thermal conductivity is 0.11 W / (m·K), and the dry shrinkage is 0.31 mm / m.

[0079] Example 5 It is basically the same in structure and components as Example 1, with the main difference being that water-quenched blast furnace slag and hot-smothered LF refining slag are not added to the composition of the foam thermal insulation concrete, and its components are replaced by cement.

[0080] The enhanced thermal insulation component is tested in accordance with "Lightweight Partition Boards for Buildings" GB / T 23451-2023. Its compressive strength is 5.1 MPa, the multiple of bending load to self-weight of the board (150 mm) is 3, and after 8 impact resistance tests, there are no cracks on the board surface; the thermal conductivity is 0.15 W / (m·K), and the dry shrinkage is 0.42 mm / m.

[0081] Comparative Example 1 It is basically the same in structure and components as Example 1, with the main difference being that there are no the first panel buffer 4 and the second panel buffer 6.

[0082] The enhanced thermal insulation component is tested in accordance with "Lightweight Partition Boards for Buildings" GB / T 23451-2023. Its compressive strength is 6.2 MPa, the multiple of bending load to self-weight of the board (150 mm) is 4.5, and after 11 impact resistance tests, there are no cracks on the board surface; the thermal conductivity is 0.13 W / (m·K), and the dry shrinkage is 0.33 mm / m.

[0083] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0084] The terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plural" is two or more.

[0085] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0086] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An enhanced thermal insulation component, characterized in that: include: The first panel (1) and the second panel (3) are connected to two side surfaces of the enhanced thermal insulation core (2); The enhanced heat-insulating core (2) comprises a buffer skeleton (5), a first panel buffer (4), a second panel buffer (6), a connecting member (7) and foam heat-insulating concrete; The buffer frame (5) is an S-shaped continuous bending structure, forming a groove facing the first panel (1) and a groove facing the second panel (3) which are arranged at intervals; The first panel buffer (4) is inserted into a groove facing the second panel (3) and fixedly connected to the buffer frame (5); the second panel buffer (6) is inserted into a groove facing the first panel (1) and fixedly connected to the buffer frame (5); the first panel buffer (4) and the second panel buffer (6) are supported on two sides of the buffer frame (5), and the supporting contact positions are spaced apart to form a staggered force buffer zone (B); the cross-sections of the first panel buffer (4) and the second panel buffer (6) are V-shaped; the first panel buffer (4) and the second panel buffer (6) are connected to a connecting member (7), and the connecting member (7) tightly connects the first panel (1), the second panel (3) and the enhanced thermal insulation core (2).

2. The enhanced thermal insulation component according to claim 1, characterized in that: The first panel (1) and the second panel (3) are calcium silicate substrates, which are composed of the following components in parts by weight: 11-16 parts of cement, 7-9 parts of anti-cracking fibers, 5-8 parts of fillers, 1-2 parts of silane coupling agents, 30-37 parts of LF refined slag treated by air quenching, 20-35 parts of quartz sand powder, 5-10 parts of slaked lime powder, 6-8 parts of bentonite, and 1-3 parts of flocculants.

3. The enhanced thermal insulation component according to claim 2, characterized in that: The anti-cracking fibers include carbon fibers and glass fibers. Based on the total mass of the anti-cracking fibers, the mass ratio of the glass fibers to the carbon fibers is 1.3-1.6:

1.

4. The enhanced thermal insulation component according to claim 3, characterized in that: The surface roughness of glass fiber is 10-15μm.

5. The enhanced thermal insulation component according to claim 2, characterized in that: The filler is alum and aluminum sulfate. Based on the total mass of the filler, the mass ratio of alum to aluminum sulfate is 1.7-2.1:

1.

6. The enhanced thermal insulation component according to claim 2, characterized in that: The flocculants are anionic polyacrylamide and sodium silicate. Based on the total mass of the flocculants, the mass ratio of anionic polyacrylamide to sodium silicate is 3.3-4:

1.

7. The enhanced thermal insulation component according to claim 1, characterized in that: The buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) are pre-treated; the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) are selected to be magnetizable thin steel plates, the thickness of the thin steel plates is less than 2 mm, the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) are subjected to surface roughening treatment and then immersed in a bonding enhancement liquid, so that the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) acquire magnetism, and then are placed for 5-10 minutes, and are taken out and semi-cured, thereby achieving pre-treatment of the buffer skeleton (5), the first panel buffer (4) and the second panel buffer (6) covering the bonding enhancement layer; The pre-treated buffer skeleton (5), the first panel buffer component (4) and the second panel buffer component (6) are placed in a template, and foamed thermal insulation concrete is added to prepare a reinforced thermal insulation core (2).

8. The enhanced thermal insulation component according to claim 7, characterized in that: Calculated by weight, the bonding enhancement liquid components include 30-40 parts of EVA emulsion, 10-15 parts of air-quenched converter slag, 10-15 parts of cement, 8-10 parts of fiber, and 5-9 parts of ceramsite.

9. The enhanced thermal insulation component according to claim 7, characterized in that: The foamed thermal insulation concrete comprises, by weight, 21-27 parts of cement, 15-23 parts of water-quenched blast furnace slag, 7-10 parts of hot-stifled LF refined slag, 1-2 parts of EVA, 0.3-0.5 parts of fiber, 1-2 parts of bentonite, and 0.1-0.5 parts of foaming agent.

10. The enhanced thermal insulation component according to claim 9, characterized in that: The fiber is one or more of polypropylene fiber, polyethylene fiber, polyacrylonitrile fiber, polyamide fiber, glass fiber, vinylon fiber, plant fiber, and basalt fiber.

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