An enhanced heat insulation component

Abstract

The present invention relates to the technical field of thermal insulation wall panels, and provides an enhanced thermal insulation member, which includes a first panel, a second panel, and an enhanced thermal insulation core; the enhanced thermal insulation core includes a buffer skeleton, a first panel buffer member, a second panel buffer member, a connecting member, and foam thermal insulation concrete; the buffer skeleton has an S-shaped continuous bending structure; the first panel buffer member is inserted into the groove facing the second panel, and the second panel buffer member is inserted into the groove facing the first panel and are respectively fixedly connected to the buffer skeleton; the first panel buffer member and the second panel buffer member are supported on both sides of the buffer skeleton, and the support contact positions are spaced apart to form staggered stress buffer areas. It realizes the improvement of thermal insulation performance, lightweight, water resistance, ultraviolet resistance, higher anti-aging performance, stable wall panel performance, and enhanced anti-stress impact performance.

Description

Technical Field

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

[0002] A composite thermal insulation wall panel is a non-load-bearing wall component composed of multiple layers of different functional materials through adhesive 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:

[0003] Outer decorative surface: such as metal plates, calcium silicate boards or AAC boards, providing waterproofing, weather resistance and aesthetics.

[0004] Thermal insulation layer: Core thermal insulation materials such as rock wool, XPS / EPS foam boards, modified polystyrene particle concrete, etc., with a thermal conductivity as low as 0.12 - 0.175 W / (m·K).

[0005] Skeleton layer: Light steel keels or cold-formed thin-walled steel sections, providing structural strength.

[0006] Inner support structure: Lightweight concrete or calcium silicate boards, enhancing overall stability.

[0007] Typical products include: AAC composite integrated wall panels: integrating decoration, thermal insulation, fire protection, sound insulation and waterproofing functions. Light steel keel composite wall panels: pouring lightweight concrete in the middle, and the decorative layer is an OSB board or a gypsum board.

[0008] Rock wool composite wall panels: a combination of lightweight aggregate concrete and rock wool, with a heat transfer coefficient as low as 0.269 W / (m²·K).

[0009] 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, and 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 absorption leads to mildew. The splicing of the 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 coefficients of the interfaces of the multi-layer structure causes cracking (such as cracking caused by different materials such as the combination of concrete and polystyrene). Metal panels (such as aluminum plates) have a high thermal conductivity and need to be paired with a thicker thermal insulation layer.

[0010] During the use of composite thermal insulation wall panels, 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 force impact, and internal stress concentration is likely to occur among different internal materials, which easily leads to cracking of the composite wall panel.

[0011] 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%. At the same time, it can reduce 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 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 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 excessive 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, which affects the performance stability of wall panels and restricts large-scale application.

[0012] During the use of composite thermal insulation wall panels, they are affected by external forces, water, ultraviolet light irradiation, etc. Due to the multi-layer structure of composite thermal insulation wall panels, different requirements for each layer, and diverse and complex structures and components, the improvement of the quality and performance stability of composite thermal insulation wall panels are all challenged. By applying steel slag, blast furnace slag, etc. to composite thermal insulation wall panels, the cost can be reduced. However, due to different treatment methods, sources, and components of steel slag, blast furnace slag, etc., their usage amounts are limited, making it difficult to further utilize this resource and reduce costs. Summary of the Invention

[0013] 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.

[0014] The embodiments of the present application are implemented as follows:

[0015] The present application example provides an enhanced thermal insulation member, including:

[0016] A first panel (1) and a second panel (3), connected to both sides of the enhanced thermal insulation core (2);

[0017] The enhanced thermal 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 thermal insulation concrete;

[0018] 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);

[0019] The first panel buffer (4) is inserted into the groove facing the second panel (3) and fixedly connected to 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); the first panel buffer (4) and the second panel buffer (6) are supported on both sides of the buffer framework (5), and the support contact positions are spaced apart, forming 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).

[0020] 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.

[0021] 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.

[0022] Optionally, the surface roughness of the glass fiber is 10-15 μm.

[0023] 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.

[0024] 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.

[0025] Optionally,

[0026] The buffer framework (5), the first panel buffer (4) and the second panel buffer (6) are pretreated; the buffer framework (5), the first panel buffer (4) and the second panel buffer (6) are selected as magnetizable thin steel plates with a thickness less than 2 mm. After the buffer framework (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 framework (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 framework (5), the first panel buffer (4) and the second panel buffer (6).

[0027] 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).

[0028] Optionally, 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.

[0029] 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 hot-pressed 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.

[0030] 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.

[0031] The beneficial effects include:

[0032] 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 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 flexural performance. The first panel buffer and the second panel buffer are inserted into the grooves, and the contact positions with the buffer skeleton are far 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 grooves, 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 interlaced force buffer zone, which can enable the force to be transmitted 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 into 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 flexural 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

[0033] 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 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.

[0034] Figure 1 Schematic diagram of an enhanced thermal insulation member provided by an embodiment of the present application.

[0035] Figure 2 Schematic cross-sectional view of an enhanced thermal insulation member A provided by an embodiment of the present application.

[0036] 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 area. Detailed implementation manners

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0038] 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.

[0039] 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 of the associated listed items.

[0040] In view of the problems that during the use of composite thermal insulation wall panels, they are vulnerable to external forces, water, ultraviolet light irradiation, etc., which pose challenges to the quality improvement, 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, etc. Therefore, the embodiments of the present invention provide an enhanced thermal insulation member and a preparation method thereof.

[0041] The features and performance of the present application are further described in detail below in conjunction with the embodiments:

[0042] As Figure 1-2 shown, the embodiments of the present application provide an enhanced thermal insulation member and a preparation method thereof, including:

[0043] 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 achieve the installation of multiple thermal insulation members, which are not shown here.

[0044] The first panel 1 and the second panel 3 are connected to both sides of the enhanced thermal insulation core 2 to protect the enhanced thermal insulation core 2, prevent the enhanced thermal insulation core 2 from cracking or falling off, resist the erosion of the external environment (such as rainwater and ultraviolet rays), extend the service life of the enhanced thermal insulation core 2, and at the same time play the function of the device.

[0045] The first panel 1 and the second panel 3 are connected to both sides of the enhanced thermal insulation core 2 by mechanical fixing (such as connecting with connecting pieces such as wire mesh, adhesive, bolts, etc.) to ensure close combination with the enhanced thermal insulation core 2.

[0046] The first panel 1 and the second panel 3 can be selected as 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 selected as a glass fiber reinforced concrete board, calcium silicate board, gypsum board, etc.

[0047] 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 the existing preparation methods of calcium silicate board can be used. In addition, water, additives, etc. can be added as needed during the preparation process.

[0048] The cement is selected as ordinary Portland cement; quartz sand powder (SiO2 content ≥ 93%) is used as one of the main aggregates to provide a rigid skeleton support, significantly enhancing 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) provides the CaO component, which undergoes a hydrothermal synthesis reaction with SiO2 of quartz sand under humid and hot conditions to generate calcium silicate (CaSiO3) and C-S-H gel, forming a matrix gel network structure and endowing the substrate with initial strength and long-term stability.

[0049] 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, and reducing the deformation risk. It is especially suitable for environments with large temperature differences or high humidity. The substrate is easier to cut, drill, and the edges are not prone to chipping.

[0050] Preferably: it includes carbon fibers and glass fibers. Based on the total mass of the anti-cracking fibers, the mass ratio of glass fiber to carbon fiber 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, dense short-cut fiber networks are formed in the calcium silicate matrix. By dispersing external loads in multiple directions, local stress concentration is effectively reduced, 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 can transfer loads more efficiently; at the same time, the thermal expansion coefficient is closer to that of the matrix, which also improves 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.

[0051] The fillers can be selected as alum (potassium alum) and aluminum sulfate; alum (potassium alum) and aluminum sulfate hydrolyze to form 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. K in alum + and Al in aluminum sulfate 3+ through ion exchange with the calcium silicate matrix (containing Ca 2+)Combined to form a more stable aluminosilicate network structure, which is beneficial to enhancing the matrix strength. At the same time, the above ions regulate the surface charge of the matrix and neutralize erosive ions such as Cl in the environment, reducing the corrosion rate of the panel in a humid environment; the colloid generated by the hydrolysis of alum can reduce the viscosity of the slurry, and aluminum sulfate promotes the dispersion of anti-cracking fibers through the charge effect of Al - etc. The combined effect of the two is beneficial 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:aluminum sulfate is 1.7 - 2.1:1; increasing the dosage of alum is beneficial to reducing the viscosity of the slurry, regulating the surface charge of the ion-regulated matrix, facilitating a more stable aluminosilicate network structure, enhancing the matrix strength, and further reducing the corrosion rate of the panel in a humid environment. 3+

[0052] 1 - 2 parts of silane coupling agent can improve the combination between components, facilitate the uniform dispersion of substances, and improve properties such as strength. Commercially available products can be selected.

[0053] 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 resistance of the panel to acidic and alkaline environments. Sodium silicate generates silicic acid gel to enhance the denseness of the matrix and at the same time adsorbs erosive ions such as Cl - etc., extending the service life of the substrate. Preferably, based on the total mass of the flocculant, the mass ratio of anionic polyacrylamide:sodium silicate is 3.3 - 4:1; by increasing the dosage of anionic polyacrylamide, it is more beneficial to adsorb anti-cracking fibers and matrix particles, enhancing the interfacial bonding strength, and improving mechanical properties and acid and alkali resistance.

[0054] Bentonite forms a thixotropic colloid by adsorbing water molecules, reducing the viscosity fluctuation of the slurry, enhancing the uniform wetting of fibers and slag powder, and avoiding delamination defects; by adding a high proportion relative to the usage amounts of anti-cracking fibers and slag powder, it is beneficial to the uniform mixing of the system and improves performance.

[0055] ​The addition of LF refining slag treated by the air quenching method is beneficial to cost reduction and turning waste into treasure. For the LF refining slag treated by the air quenching method, the high-speed air flow is used for rapid cooling to quickly solidify the LF refining slag, inhibit the slow crystallization reaction of CaO and SiO2, and promote the formation of amorphous calcium silicate. This glass phase has a dense structure, can wrap free CaO, reduce its reactivity with water, and its glass phase structure is conducive to reducing the porosity, improving the heat insulation performance, enhancing the compressive and flexural properties. At the same time, its composition can greatly 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·Al2O3) or free CaO that may be generated in the slag; LF refining slag usually has a high alkalinity (CaO / SiO2≥3), providing sufficient CaO and SiO2 raw materials for the formation of calcium silicate, and directly reacting to form stable silicates such as 2CaO·SiO2 or 3CaO·SiO2 under air quenching conditions, directly or indirectly serving as an important part of the calcium silicate matrix. The appropriate amount of Al2O3 (such as 15-20%) contained therein can form composite minerals with calcium silicate (such as calcium aluminosilicate, which has a spinel-type structure and can absorb the 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), further improving the stability of calcium silicate, reducing the hydration risk, and enhancing 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, avoids their competitive reaction with CaO, and is conducive to ensuring the preferential formation of calcium silicate, having 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%, SiO2 6%-10%, Al2O3 18%-28%, FeO 1%-2%. The high Al2O3 content makes the glass phase network structure denser, reducing the light scattering interface defects. The combination of high Al2O3 content and high alkalinity can simultaneously inhibit the formation of FeO and is conducive to the formation of a uniform closed-cell structure, improving the heat insulation performance, having a certain ability to improve the anti-ultraviolet ability, and being beneficial to improving the anti-aging performance of the panel.

[0056] The enhanced heat insulation core 2 includes a buffer framework 5, a first panel buffer member 4, a second panel buffer member 6, a connecting member 7, and foam thermal insulation concrete.

[0057] The buffer framework 5 has an S-shaped continuously bent structure, forming grooves that are spaced and face the first panel 1 and the second panel 3, and is used to enhance the elastic buffering 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, extending the service life, and improving the anti-bending performance. Optionally, the buffer framework 5 is a metal framework with a plate-like 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 thickness of the thin steel plate. The reduction of the thin steel plate thickness is conducive to reducing the weight, and at the same time reducing the influence of the high thermal conductivity of the metal on the heat insulation performance of the enhanced thermal insulation part. The thickness of the steel plate can be selected to be below 2 mm. The use of the buffer framework 5 can replace the supporting role of frameworks such as deformed steel bars, 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, thus increasing the risk of reducing the core structure stability.

[0058] 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 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 structures such as plates or rods, and only need to play a role in supporting and relieving the force, which is not limited herein. Preferably, they are thin steel plate structures that match 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 influence of the heat conduction 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 to realize 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 to form a staggered force buffer zone B 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 make the stress transfer in different directions such as the buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6, effectively buffering and dissipating the stress impacts perpendicular to the panel direction on the first panel 1 and the second panel 3 during use, extending the stress to the interior of the core material for dissipation. Thus, the impact resistance of the enhanced heat-insulating core 2 is greatly improved, enabling the enhanced heat-insulating core 2 to still have a stable structure and an extended service life during long-term use, and also increasing the performance such as the 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.

[0059] 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 can adopt existing known methods.

[0060] 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, brought into contact with a high-magnetic-force magnet, magnetized by passing an electric current, etc., and then taken out after being placed for 5 - 10 minutes for semi-curing to achieve the covering of the buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6 with the bonding enhancement layer. The covering of the buffer framework 5, the first panel buffer member 4, and the second panel buffer member 6 with the bonding enhancement layer is beneficial to the bonding strength with the foam heat-insulating concrete and improves the stability of the core layer material.

[0061] Calculated by weight parts, 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.

[0062] 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 prone to crack generation during stress buffering.

[0063] The addition of air-quenched converter 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.

[0064] The fiber can be selected from polypropylene fiber, polyethylene fiber, polyacrylonitrile fiber, polyamide fiber, plant fiber, etc., which can improve the elastic buffering ability and the layer stability of the bonding enhancement layer.

[0065] The air-quenched converter slag has a high total iron (TFe) content in the converter slag, between 20% - 35%. In the slag, there is metallic iron (7 - 10%), and the content of ferric oxide can reach over 20%. The calcium oxide, silicon dioxide, etc. it contains are similar to the main components in the foam thermal insulation concrete. When the air-quenched converter slag is added, dipping the magnetic buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 6 into the bonding enhancement liquid can cause the air-quenched converter slag in the bonding enhancement liquid to aggregate 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 air-quenched converter slag components 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-quenched converter slag is harder and is compatible with the metal plate composition. The outer layer has more components such as EVA, with good bonding property 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.

[0066] 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.

[0067] 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.

[0068] The cement uses commercially available high-grade portland cement, etc., and is not specifically limited herein.

[0069] 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.

[0070] The foam stabilizer can be selected from one or more of cellulose ether, alkylphenol polyoxyethylene ether, polyvinyl alcohol, polyacrylamide, and ethanolamine.

[0071] The foaming agent can be selected from sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, animal protein foaming agent, hydroxyethyl cellulose, soybean protein foaming agent, etc.

[0072] Bentonite forms a thixotropic colloid by adsorbing water molecules, reducing the viscosity fluctuation of the slurry, improving the wetting uniformity of fibers and slag powder, and avoiding delamination defects. Granulated blast furnace slag forms a honeycomb-like porous structure after being rapidly cooled by 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 thermal 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 water absorption and expansion cracking 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.

[0073] The use of heat-soaked LF refining slag, through the heat-soaking method, which is treated by steam spraying and self-disintegration by waste heat, makes the LF refining slag have a high pulverization rate (85% of the 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 the 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 the heat convection loss. The heat-soaked LF refining slag contains tricalcium silicate (C3S) and dicalcium silicate (C2S), with cement-like gelling properties, which 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 / SiO2 ≥ 3) and stable silicate phase of LF refining slag can serve as a strengthening 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 with specific treatment methods for compounding, using the granulated blast furnace slag and heat-soaked LF refining slag in the granulation or heat-soaking treatment methods, reducing the hydration risk, and taking advantage of the differences in their respective pore rates and compactness, and using 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.

[0074] Example 1

[0075] An enhanced thermal insulation member, which is a thermal insulation wall, with a first panel 1 and a second panel 3 connected to both sides of the enhanced thermal insulation core 2. The first panel 1 and the second panel 3 are connected to both sides of the enhanced thermal insulation core 2 through connectors 7.

[0076] 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.

[0077] The anti-cracking fiber is carbon fiber and glass fiber. Based on 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 13 μm.

[0078] The filler is alum and aluminum sulfate; based on the total mass of the filler, the mass ratio of alum to aluminum sulfate is 1.9:1.

[0079] The flocculant uses anionic polyacrylamide and sodium silicate. The molecular weight of the anionic polyacrylamide is 15 million to 17 million. Based on 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 member 4, a second panel buffer member 6, a connecting member 7, and foam heat-insulating concrete. The buffer skeleton 5 is in an S-shaped continuous bending structure and is a magnetizable thin steel plate with a thickness of 1.5 mm.

[0080] The first panel buffer member 4 and the second panel buffer member 6 are supported on both sides of the buffer skeleton 5, and the support contact positions are spaced apart to form a staggered stress buffer area B as shown in Figure 2 The first panel buffer member 4 and the second panel buffer member 6 are thin steel plate structures matching the buffer skeleton 5; the cross-sections of the first panel buffer member 4 and the second panel buffer member 6 are V-shaped.

[0081] The buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 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 member 4, and the second panel buffer member 6 are immersed in a bonding enhancement liquid, contacted with a high-magnetic magnet to obtain magnetism, and then taken out after being placed for 10 minutes for semi-curing, so as to form a bonding enhancement layer covering the buffer skeleton 5, the first panel buffer member 4, and the second panel buffer member 6. Based on parts 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.

[0082] 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 heat-insulating concrete is added to prepare the enhanced heat-insulating core 2. The foam heat-insulating concrete can be existing foamed foam concrete.

[0083] In parts by weight, the composition of the foam thermal insulation concrete includes: 24 parts of cement, 17 parts of water-quenched blast furnace slag, 8 parts of heat-soaked 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.

[0084] The enhanced thermal insulation component 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.

[0085] Example 2

[0086] It is basically the same as Example 1 in terms of structure and components. The main difference is that the heat-quenched LF refining slag is not added to the calcium silicate substrate, and the corresponding component is replaced by cement.

[0087] The enhanced thermal insulation component 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.

[0088] Example 3

[0089] It is basically the same as Example 1 in terms of structure and components. The main difference is that the crack-resistant fiber includes carbon fiber and glass fiber. Based on the total mass of the crack-resistant fiber, the mass ratio of the glass fiber to the carbon fiber is 0.4:1.

[0090] The enhanced thermal insulation component 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.

[0091] Example 4

[0092] It is basically the same as Example 1 in terms of structure and components. The main difference is that the buffer skeleton (5), the first panel buffer member (4), and the second panel buffer member (6) are not pretreated.

[0093] 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 the flexural load to the 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.

[0094] Example 5

[0095] It is basically the same as Example 1 in terms of structure and components. The main difference is 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.

[0096] 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 the flexural load to the 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.

[0097] Comparative Example 1

[0098] It is basically the same as Example 1 in terms of structure and components. The main difference is that there are no the first panel buffer 4 and the second panel buffer 6.

[0099] 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 the flexural load to the 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.

[0100] 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. It 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.

[0101] 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 "plurality" is two or more.

[0102] 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.

[0103] 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 heat insulation member, characterized in that, Comprising: 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 framework (5), a first panel buffer (4), a second panel buffer (6), a connecting member (7), and foam heat-insulating concrete; The buffer framework (5) is in an S-shaped continuous bending structure, forming grooves facing the first panel (1) and grooves facing the second panel (3) which are arranged at intervals; The first panel buffer (4) is inserted into the groove facing the second panel (3) and fixedly connected to 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); the first panel buffer (4) and the second panel buffer (6) are supported on both sides of the buffer framework (5), and the support contact positions are spaced apart, forming staggered stress buffer zones (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); The buffer framework (5), the first panel buffer (4) and the second panel buffer (6) are pretreated; the buffer framework (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 framework (5), the first panel buffer (4) and the second panel buffer (6) are subjected to surface roughening treatment, they are immersed in a bonding enhancement liquid. After the buffer framework (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 buffer framework (5), the first panel buffer (4) and the second panel buffer (6) with a bonding enhancement layer; The pretreated buffer framework (5), the first panel buffer (4) and the second panel buffer (6) are placed in a template, and foam heat-insulating concrete is added to prepare the enhanced heat insulation core (2); By weight, the components of the bonding enhancement liquid include 30 - 40 parts of EVA emulsion, 10 - 15 parts of air-quenched LD converter slag, 10 - 15 parts of cement, 8 - 10 parts of fiber, and 5 - 9 parts of ceramsite; By weight, the composition of the foam heat-insulating concrete includes: 21 - 27 parts of cement, 15 - 23 parts of water-quenched blast furnace slag, 7 - 10 parts of hot-piled 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.

2. The enhanced heat insulation member according to claim 1, characterized in that 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.

3. The enhanced heat insulation member according to claim 2, wherein The crack-resistant fiber includes carbon fiber and glass fiber. Based on the total mass of the crack-resistant fiber, the mass ratio of the glass fiber to the carbon fiber is 1.3 - 1.6:

1.

4. The enhanced heat insulation member according to claim 3, characterized in that, The surface roughness of the glass fiber is 10 - 15 μm.

5. The enhanced heat insulation member according to claim 2, wherein, 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 member according to claim 2, wherein, The flocculant is anionic polyacrylamide and sodium silicate. Based on the total mass of the flocculant, the mass ratio of anionic polyacrylamide to sodium silicate is 3.3 - 4:

1.

7. The enhanced heat-insulating member according to claim 1, wherein 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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