Anti-deformation and anti-distortion thermal insulation material plate

Abstract

The invention discloses an anti-deformation and anti-distortion thermal insulation material plate, and relates to the technical field of building materials, the anti-deformation and anti-distortion thermal insulation material plate comprises: a surface protection layer comprising a honeycomb membrane and aerogel particles filled in honeycomb pores; the anti-distortion strengthening layer comprises a fiber grid and a shape memory alloy micro-spring embedded into a grid node; the phase change energy storage core layer comprises a desulfurized gypsum-based porous framework and a fatty acid eutectic phase change material encapsulated in pores of the porous framework, the anti-distortion strengthening layer is embedded in the phase change energy storage core layer, and the surface protection layer is fixedly arranged on the phase change energy storage core layer. According to the technical scheme, the problem that an existing thermal insulation material plate is poor in deformation resistance and distortion resistance can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to an anti-deformation and anti-twisting thermal insulation material plate. Background Art

[0002] Insulation boards are materials used to reduce heat transfer and help maintain temperature. They are widely used in the construction field to improve energy efficiency and comfort. Traditional insulation boards (such as XPS boards, rock wool, etc.) can meet basic insulation needs.

[0003] However, traditional insulation material boards may undergo irreversible deformation under temperature stress and lack the ability to repair themselves, resulting in a limited service life. In other words, the existing insulation materials have poor resistance to deformation and distortion. Summary of the invention

[0004] The main purpose of the present invention is to provide a deformation-resistant and twist-resistant thermal insulation material plate, aiming to solve the problem that the existing thermal insulation material plates have poor deformation-resistant and twist-resistant capabilities.

[0005] To achieve the above-mentioned purpose, the anti-deformation and anti-twisting thermal insulation material plate proposed by the present invention comprises:

[0006] A surface protective layer, comprising a honeycomb membrane and aerogel particles filling the honeycomb pores;

[0007] An anti-torsion reinforcement layer comprising a fiber mesh and shape memory alloy microsprings embedded in the mesh nodes;

[0008] A phase-change energy storage core layer, the phase-change energy storage core layer comprises a desulfurized gypsum-based porous skeleton and a fatty acid eutectic phase-change material encapsulated in the pores of the porous skeleton, wherein the anti-twisting strengthening layer is embedded in the phase-change storage core layer, and the surface protective layer is fixed to the phase-change energy storage core layer.

[0009] In one embodiment, the honeycomb porosity is ≥85%, the diameter of the aerogel particles in the pores is 50 nm-200 nm, and occupies 60%-75% of the pore volume.

[0010] In one embodiment, the aerogel particles are configured as silica aerogel particles; and the honeycomb membrane is configured as a polyethylene honeycomb membrane.

[0011] In one embodiment, the fiber mesh is configured as a 3D printed basalt fiber mesh.

[0012] In one embodiment, the mesh size of the fiber mesh is 6mm-10mm*6mm-10mm.

[0013] In one embodiment, the fiber grid is embedded in the phase change energy storage core layer at an inclination angle of 5°-10°, and the embedding depth is 35%-45% of the total thickness of the phase change energy storage core layer.

[0014] In one embodiment, the basalt fiber grid is provided with a first end and a second end, the first end and the second end are arranged opposite to each other, wherein the second end is arranged near the middle of the phase change energy storage core layer, and a conical groove structure is formed at the intersection of the second end.

[0015] In one embodiment, the porosity of the desulfurized gypsum-based porous framework is 70-80%, and the pore size distribution is 0.1 mm-0.3 mm.

[0016] In one embodiment, the surface protection layer is bonded to the phase change energy storage core layer.

[0017] In one embodiment, a plurality of grooves are provided at one end of the phase change energy storage core layer facing the surface protection layer;

[0018] One end of the surface protection layer having honeycomb pores is bonded to the phase change energy storage core layer by hot melt adhesive.

[0019] The technical solution of the present invention adopts an anti-distortion reinforcement layer, wherein the anti-distortion reinforcement layer comprises a fiber grid and a shape memory alloy microspring embedded in the grid nodes. It should be noted that the fiber grid provides additional mechanical support, which enhances the overall rigidity and durability of the material. The shape memory alloy microspring can return to its original shape after being twisted or deformed, giving the material a certain self-repairing ability, thereby improving the ability of the insulation material board to resist deformation and distortion, thereby solving the technical problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of an embodiment of a deformation-resistant and twist-resistant thermal insulation material plate provided by the present invention;

[0022] Figure 2 A schematic structural diagram of an embodiment of a honeycomb membrane in a deformation-resistant and twist-resistant thermal insulation material plate provided by the present invention;

[0023] Figure 3 A schematic structural diagram of an embodiment of a surface protective layer in a deformation-resistant and twist-resistant thermal insulation material plate provided by the present invention;

[0024] Figure 4 A schematic structural diagram of an embodiment of an anti-distortion strengthening layer in an anti-deformation and anti-distortion thermal insulation material plate provided by the present invention;

[0025] Figure 5 for Figure 4 A cross-sectional view of a structure in which the thickness is exaggerated to a certain extent;

[0026] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0027] Figure 7 A schematic structural diagram of an embodiment of a phase change energy storage core layer in a deformation-resistant and twist-resistant thermal insulation material plate provided by the present invention.

[0028] Description of Figure Numbers:

[0029] 100, surface protection layer; 110, honeycomb membrane; 111, honeycomb pores; 120, aerogel particles;

[0030] 200, anti-distortion strengthening layer; 210, fiber mesh; 211, first end; 212, second end; 220, shape memory alloy microspring; 230, conical groove;

[0031] 300, phase change energy storage core layer; 310, groove;

[0032] 400, hot melt adhesive layer.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Insulation boards are materials used to reduce heat transfer and help maintain temperature. They are widely used in the construction field to improve energy efficiency and comfort. Traditional insulation boards (such as XPS boards, rock wool, etc.) can meet basic insulation needs.

[0038] However, traditional insulation material boards may undergo irreversible deformation under temperature stress and lack the ability to repair themselves, resulting in a limited service life. In other words, the existing insulation materials have poor resistance to deformation and distortion.

[0039] The present invention provides a deformation-resistant and twist-resistant thermal insulation material plate, aiming to solve the problem that the existing thermal insulation material plates have poor deformation-resistant and twist-resistant capabilities.

[0040] See also Figures 1 to 7 In one embodiment of the present invention, the anti-deformation and anti-distortion thermal insulation material plate comprises:

[0041] The surface protection layer 100 includes a honeycomb membrane 110 and aerogel particles 120 filling the honeycomb pores 111. It should be noted that since the surface protection layer 100 is composed of the honeycomb membrane 110, the honeycomb membrane 110 can provide a lightweight but strong basic structure with good mechanical strength and stability, and can disperse stress through the hexagonal honeycomb units, that is, reduce local stress concentration, thereby enhancing the material's anti-deformation ability. Furthermore, the honeycomb pores 111 are filled with aerogel particles 120. Since the aerogel particles 120 have a lower thermal conductivity, filling them in the honeycomb pores 111 can further improve the thermal insulation performance.

[0042] The anti-torsion reinforcement layer 200 includes a fiber grid 210 and shape memory alloy microsprings 220 embedded in the grid nodes. It should be noted that the fiber grid 210 can provide additional mechanical support and enhance the overall rigidity and durability of the material. The shape memory alloy microspring 220 can return to its original shape after being twisted or deformed, giving the material a certain self-repairing ability, thereby improving the ability of the insulation material board to resist deformation and distortion, thereby solving the technical problems existing in the prior art. Furthermore, in some embodiments, the shape memory alloy microspring 220 may adopt the Ni-Ti-Cu system. It should be noted that the Ni-Ti-Cu alloy has a shape memory effect and superelastic properties in a wider temperature range than pure Ni-Ti alloy. Furthermore, the present application provides an embodiment, and the composition of the shape memory alloy microspring 220 is Ni 47 Ti 49 Cu4 (at%), its phase transition temperature is -25°C to 75°C. That is to say, the shape memory alloy microspring 220 made of Ni-Ti-Cu material can realize reversible deformation recovery in a larger temperature range, and can further improve the adaptability of the anti-torsion strengthening layer 200 in different environments, so that the thermal insulation material plate of this embodiment can be used in different regions. Compared with the traditional thermal insulation material plate, when the microspring adopts the Ni-Ti-Cu system, the anti-deformation and anti-torsion ability of the thermal insulation material plate can be further improved. At the same time, adding Cu can improve the cold processing performance of the alloy, making it easier to form into complex shapes by conventional mechanical processing methods. That is to say, by adding Cu, the processing difficulty of the shape memory alloy microspring 220 can be reduced, and the production cost can be reduced. It can be understood that due to the reduction in processing difficulty, the manufacturing accuracy of the microspring will also be relatively improved.

[0043] The phase-change energy storage core layer 300 includes a desulfurized gypsum-based porous skeleton and a fatty acid eutectic phase change material encapsulated in the pores of the porous skeleton. It should be noted that the fatty acid eutectic phase change material (PCM) has a high latent heat storage capacity and can absorb or release a large amount of heat within a specific temperature range while keeping the temperature relatively stable. When the ambient temperature is higher than the phase change temperature of the PCM, the PCM will melt and absorb heat; conversely, when the ambient temperature is lower than the phase change temperature of the PCM, the PCM will solidify and release heat. In other words, the insulation material board can effectively regulate the indoor temperature in an environment with a large temperature difference between day and night or obvious seasonal changes, reducing dependence on air conditioning and heating systems, thereby improving energy efficiency. At the same time, desulfurized gypsum is an environmentally friendly material made from a by-product produced during the desulfurization process of industrial waste gas. Its porous structure not only provides good mechanical support, but also effectively disperses stress, further enhances the overall structural strength and deformation resistance of the material, and encapsulates PCM in a desulfurized gypsum-based porous skeleton, which can not only prevent leakage of PCM during use, but also ensure the stability and reliability of PCM in long-term use through the support of the skeleton. Furthermore, the use of desulfurized gypsum as a porous skeleton can promote the recycling of desulfurized gypsum as industrial waste treatment. The anti-torsion strengthening layer 200 is embedded in the core layer of the phase change reservoir, and the surface protective layer 100 is fixed to the phase change energy storage core layer 300. Furthermore, in some embodiments, the thickness of the surface protective layer 100 is 1.5mm-2mm, and the thickness of the phase change energy storage core layer 300 is 20mm-25mm.

[0044] In one embodiment, the honeycomb pore 111 ratio is ≥85%, and the particle size of the aerogel particles 120 in the pores is 50nm-200nm, and accounts for 60%-75% of the pore volume. Further, the honeycomb pore 111 ratio is ≥85%, which can make a large number of air gaps inside the insulation material board, and these air gaps can greatly reduce the heat conduction path, thereby improving the insulation performance. At the same time, the high porosity can also make the material lighter and easier to install in the transport box. Further, the particle size of the aerogel particles 120 in the pores is 50nm-200nm, and accounts for 60%-75% of the pore volume. Such an arrangement can further reduce heat conduction and improve the insulation effect.

[0045] In one embodiment, the aerogel particles 120 are configured as silica aerogel particles 120, which can further improve the heat insulation effect; the honeycomb membrane 110 is configured as a polyethylene honeycomb membrane 110, and further, the polyethylene honeycomb membrane 110 can be a high-density polyethylene honeycomb membrane 110. Embedding the silica aerogel particles 120 in the polyethylene honeycomb membrane 110 can improve the overall mechanical strength and durability of the material without significantly increasing the weight. At the same time, the combination of the aerogel particles 120 and the honeycomb structure not only provides excellent heat insulation performance, but also effectively absorbs sound waves and plays a role in sound insulation.

[0046] In one embodiment, the fiber mesh 210 is configured as a 3D printed basalt fiber mesh 210. Specifically, basalt fiber has the advantages of high strength, high modulus, good corrosion resistance and low thermal expansion coefficient. The fiber mesh 210 manufactured by 3D printing technology can accurately control its structure and density according to specific needs, thereby achieving optimal mechanical properties, facilitating the production of the fiber mesh 210, and improving production capacity.

[0047] In one embodiment, the mesh size of the fiber mesh 210 is 6mm-10mm*6mm-10mm. Specifically, the design of a mesh size of 6mm-10mm*6mm-10mm can provide a certain flexibility while ensuring sufficient supporting force, avoiding brittle fracture caused by excessive rigidity, and can also reduce on-site cutting losses (matching the standard module size of 300mm*300mm of the building exterior wall), thereby improving the utilization rate of the insulation material board.

[0048] In one embodiment, reference Figure 1 The fiber grid 210 is embedded in the phase change energy storage core layer 300 at an inclination angle of 5°-10°, which enables the fiber grid 210 and the core layer to form an oblique interlocking structure, converting the shear stress into normal compressive stress, so that it can better withstand external forces from multiple directions, thereby improving its overall tensile strength and anti-twisting ability; the embedding depth is further 35%-45% of the total thickness of the phase change energy storage core layer 300, ensuring that the fiber grid 210 and the core layer skeleton form a continuous force transmission path to avoid stress mutations. At the same time, the embedding depth of 35%-45% can ensure sufficient bonding strength without affecting the thermal energy storage function of the phase change energy storage core layer 300.

[0049] In one embodiment, reference Figure 5 , Figure 6The basalt fiber grid 210 is provided with a first end 211 and a second end 212, and the first end 211 and the second end 212 are arranged relatively to each other, wherein the second end 212 is arranged near the middle of the phase change energy storage core layer 300, that is, the first end 211 is arranged away from the middle of the phase change energy storage core layer 300, and a conical groove 230 structure is formed at the intersection of the second end 212, so that when the basalt fiber grid 210 is embedded in the phase change energy storage layer, part of the structure of the phase change energy storage can be located in the conical groove 230 structure of the basalt fiber grid 210. It can be understood that at this time, a conical thorn inserted into the basalt fiber grid 210 is formed inside the phase change energy storage layer, and under the action of the conical thorn and the conical groove 230 structure, an interlocking structure can be formed between the basalt fiber grid 210 and the phase change energy storage core layer 300, thereby making the connection between the two more stable. It should be noted that in the actual production process, the basalt fiber grid 210 needs to be produced by 3D printing first. At the same time, in the production process, a conical groove 230 structure needs to be formed at the intersection of the first end of the basalt fiber grid 210. At this time, the 3D printed structure basically has multiple conical protrusions, and the conical protrusions are arranged along the intersection of the first end. After the basalt fiber grid 210 is completed, the basalt fiber grid 210 is placed in a mold for making a phase change energy storage core layer 300. At this time, the basalt fiber grid 210 is inclined at an angle of 5°-10°, and the embedding depth is 35%-45% of the total thickness of the phase change energy storage core layer 300, and then the material for making the phase change energy storage core layer 300 is poured into the mold. Furthermore, in one embodiment, the porosity of the desulfurized gypsum-based porous skeleton is 70-80%. Furthermore, the higher porosity provides sufficient filling space for the fatty acid eutectic phase change material (PCM). The high porosity means that more PCM can be encapsulated in the skeleton structure, thereby increasing the latent heat storage capacity of the material, which enables the material to absorb or release more heat when the temperature changes, and maintain a relatively stable temperature. The pore size distribution is 0.1mm-0.3mm, and the moderate pore size helps to ensure that the PCM is evenly distributed throughout the skeleton, avoiding local accumulation or voids, thereby improving the efficiency of thermal energy storage and release. It should be noted that if the pore size distribution is too small, it will limit the phase change efficiency, and if the pore size is too large, it will cause the phase change material to leak. Further, in some embodiments, 3D printing uses a dual-nozzle molten deposition system (the main nozzle prints the basalt fiber grid 210 at 380°C, and the auxiliary nozzle simultaneously implants the NiTiCu microspring at 200°C), the grid intersection spacing is 8mm, and the fiber diameter is 0.3mm. Further, in order to improve the performance of the microspring, the microspring can be pre-compressed by 12%.Furthermore, in some embodiments, for embedding the basalt fiber mesh into the phase change energy storage core layer 300, the following method can be used to fix the basalt fiber mesh in the mold, and then inject desulfurized gypsum slurry containing 3wt% foaming agent, and steam cure at 60°C for 24 hours to form a porous skeleton with a porosity of 75%; under vacuum conditions of 65°C and 0.1MPa, the fatty acid eutectic phase change material is impregnated into the pores, and the impregnation time is ≤30 minutes.

[0050] In one embodiment, in order to facilitate the combination of the surface protection layer 100 and the phase change energy storage core layer 300, the surface protection layer 100 and the phase change energy storage core layer 300 are bonded, and the bonding method can effectively reduce the difficulty of bonding and improve the processing efficiency.

[0051] In one embodiment, reference Figure 7 , a plurality of grooves 310 are provided at one end of the phase change energy storage core layer 300 facing the surface protection layer 100; one end of the surface protection layer 100 having the honeycomb pores 111 is bonded to the phase change energy storage core layer 300 by hot melt adhesive. It should be noted that a layer of hot melt adhesive layer 400 can be formed between the phase change energy storage core layer 300 and the surface protection layer 100. Under the action of the grooves 310 and the honeycomb pores 111, the hot melt adhesive layer can flow into the grooves 310 and the honeycomb pores 111 when bonding. Due to the filling effect of the hot melt adhesive in the grooves 310 and the honeycomb pores 111, even if subjected to external forces (such as stretching, shearing, etc.), it can effectively prevent interlayer separation and extend the service life.

[0052] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A deformation-resistant and twist-resistant thermal insulation material board, characterized in that: include: A surface protective layer, comprising a honeycomb membrane and aerogel particles filling the honeycomb pores; An anti-torsion reinforcement layer comprising a fiber mesh and shape memory alloy microsprings embedded in the mesh nodes; A phase-change energy storage core layer, the phase-change energy storage core layer comprises a desulfurized gypsum-based porous skeleton and a fatty acid eutectic phase-change material encapsulated in the pores of the porous skeleton, wherein the anti-twisting strengthening layer is embedded in the phase-change storage core layer, and the surface protective layer is fixed to the phase-change energy storage core layer.

2. The anti-deformation and anti-twisting thermal insulation material plate according to claim 1, characterized in that: The honeycomb porosity is ≥85%, the diameter of the aerogel particles in the pores is 50nm-200nm, and occupies 60%-75% of the pore volume.

3. The anti-deformation and anti-distortion thermal insulation material plate according to claim 2, characterized in that: The aerogel particles are configured as silicon dioxide aerogel particles; and the honeycomb membrane is configured as a polyethylene honeycomb membrane.

4. The anti-deformation and anti-twisting thermal insulation material plate according to claim 3, characterized in that: The fiber mesh is configured as a 3D printed basalt fiber mesh.

5. The anti-deformation and anti-twisting thermal insulation material plate according to claim 4, characterized in that: The mesh size of the fiber mesh is 6mm-10mm*6mm-10mm.

6. The anti-deformation and anti-twisting thermal insulation material plate according to claim 5, characterized in that: The fiber grid is embedded in the phase-change energy storage core layer at an inclination angle of 5°-10°, and the embedding depth is 35%-45% of the total thickness of the phase-change energy storage core layer.

7. The anti-deformation and anti-distortion thermal insulation material plate according to claim 6, characterized in that: The basalt fiber grid is provided with a first end and a second end, the first end and the second end are arranged opposite to each other, wherein the second end is arranged close to the middle of the phase change energy storage core layer, and a conical groove structure is formed at the intersection of the second end.

8. The anti-deformation and anti-twisting thermal insulation material plate according to claim 7, characterized in that: The porosity of the desulfurized gypsum-based porous skeleton is 70-80%, and the pore size distribution is 0.1 mm-0.3 mm.

9. The anti-deformation and anti-twisting thermal insulation material plate according to claim 1, characterized in that: The surface protection layer is bonded to the phase change energy storage core layer.

10. The anti-deformation and anti-twist thermal insulation material plate according to claim 9, characterized in that: A plurality of grooves are provided at one end of the phase change energy storage core layer facing the surface protection layer; One end of the surface protection layer having honeycomb pores is bonded to the phase change energy storage core layer by hot melt adhesive.

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