Non-deformable and non-twistable thermal insulation panel

Abstract

The application discloses a kind of deformation-resistant and twist-resistant thermal insulation material boards, and relates to the technical field of building materials, wherein the deformation-resistant and twist-resistant thermal insulation material board includes: surface protection layer, including honeycomb membrane and aerogel particles filled in honeycomb interstice;Anti-twist reinforcement layer, containing fiber grid and shape memory alloy micro spring embedded in grid node;Phase change energy storage core layer, the phase change energy storage core layer includes desulfurized gypsum-based porous framework and fatty acid eutectic phase change material composition encapsulated in porous framework interstice, wherein the anti-twist reinforcement layer is embedded in the phase change energy storage core layer, and the surface protection layer is fixed to the phase change energy storage core layer.The technical scheme provided by the application can solve the problem of poor deformation-resistant and twist-resistant ability of existing thermal insulation material boards.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building materials, in particular to a deformation-resistant and twist-resistant thermal insulation material plate. BACKGROUND

[0002] Thermal insulation material plate refers to a material used to reduce heat transfer and help maintain temperature. They are widely used in the field of building to improve energy efficiency and comfort. Traditional thermal insulation material plates (such as XPS plates, rock wool, etc.) can meet the basic thermal insulation requirements.

[0003] However, traditional thermal insulation material plates may have irreversible deformation under temperature change stress, lack self-repairing ability, and have limited service life, that is, the existing thermal insulation material plates have poor deformation-resistant and twist-resistant ability. SUMMARY

[0004] The main purpose of the present application is to provide a deformation-resistant and twist-resistant thermal insulation material plate, which aims to solve the problem of poor deformation-resistant and twist-resistant ability of existing thermal insulation material plates.

[0005] To achieve the above purpose, the deformation-resistant and twist-resistant thermal insulation material plate provided by the present application comprises:

[0006] A surface protection layer comprising a honeycomb membrane and aerogel particles filled in the honeycomb pores;

[0007] A twist-resistant reinforcing layer containing a fiber grid and shape memory alloy micro-springs embedded in the grid nodes;

[0008] A phase change energy storage core layer comprising a desulfurized gypsum-based porous framework and a fatty acid eutectic phase change material encapsulated in the pores of the porous framework, wherein the twist-resistant reinforcing layer is embedded in the phase change energy storage core layer, and the surface protection layer is fixed to the phase change energy storage core layer.

[0009] In an embodiment, the honeycomb porosity is greater than or equal to 85%, the particle size of the aerogel particles in the pores is 50-200 nm, and the volume of the pores is 60-75%.

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

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

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

[0013] In an 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 an embodiment, the basalt fiber grid is provided with a first end and a second end, and the first end and the second end are oppositely arranged, wherein the second end is arranged close to the middle part of the phase change energy storage core layer, and a tapered groove structure is formed at the intersection of the second end.

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

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

[0017] In an embodiment, one end of the phase change energy storage core layer facing the surface protection layer is provided with a plurality of grooves.

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

[0019] The technical scheme of the present application adopts an anti-distortion reinforcing layer, wherein the anti-distortion reinforcing layer comprises a fiber grid and shape memory alloy micro springs embedded in the grid nodes. It should be noted that the fiber grid provides additional mechanical support, enhancing the overall rigidity and durability of the material. The shape memory alloy micro springs can restore to the original shape after being twisted or deformed, giving the material certain self-repairing ability, thereby improving the anti-distortion and anti-twist ability of the thermal insulation material plate, and solving the technical problems existing in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained from the structures shown in the drawings without creative labor for those skilled in the art.

[0021] Figure 1 The structural schematic diagram of an embodiment of the anti-distortion and anti-twist thermal insulation material plate provided by the present application;

[0022] Figure 2 The structural schematic diagram of an embodiment of the honeycomb membrane in the anti-distortion and anti-twist thermal insulation material plate provided by the present application;

[0023] Figure 3 The structural schematic diagram of an embodiment of the surface protection layer in the anti-distortion and anti-twist thermal insulation material plate provided by the present application;

[0024] Figure 4 Structure diagram of an embodiment of the anti-distortion and anti-twist reinforcing layer in the anti-distortion and anti-twist thermal insulation material plate provided by the present application;

[0025] Figure 5 For Figure 4 A cross-sectional view, in which the thickness is enlarged by a certain scale;

[0026] Figure 6 For Figure 5 An enlarged view of A in the anti-distortion and anti-twist thermal insulation material plate provided by the present application;

[0027] Figure 7 Structure diagram of an embodiment of the phase change energy storage core layer in the anti-distortion and anti-twist thermal insulation material plate provided by the present application.

[0028] Explanation of reference numerals:

[0029] 100, surface protection layer; 110, honeycomb film; 111, honeycomb pore; 120, aerogel particle;

[0030] 200, anti-distortion and anti-twist reinforcing layer; 210, fiber grid; 211, first end; 212, second end; 220, shape memory alloy micro spring; 230, conical groove;

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

[0032] 400, hot melt adhesive layer.

[0033] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

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

[0036] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0037] The insulation board refers to a material for reducing heat transfer and helping to maintain temperature. They are widely used in the field of building to improve energy efficiency and comfort. Traditional insulation boards (such as XPS boards, rock wool, etc.) can meet the basic heat insulation requirements.

[0038] However, the traditional insulation board has the possibility of irreversible deformation under temperature change stress, lacks self-repairing ability, and has a limited service life, that is, the existing insulation material has poor deformation resistance and anti-twisting ability.

[0039] The present application provides a deformation-resistant and anti-twisting insulation board, which aims to solve the problem of poor deformation resistance and anti-twisting ability of the existing insulation board.

[0040] Please refer to Figures 1 to 7 In an embodiment of the present application, the deformation-resistant and anti-twisting insulation board comprises:

[0041] The surface protection layer 100 comprises a honeycomb film 110 and aerogel particles 120 filled in the honeycomb pores 111; it should be noted that the surface protection layer 100 is composed of the honeycomb film 110, which can provide a lightweight but strong basic structure with good mechanical strength and stability, and can disperse stress through the hexagonal honeycomb unit, that is, reduce local stress concentration, thereby enhancing the deformation resistance of the material. Further, the honeycomb pores 111 are filled with aerogel particles 120, which have a low thermal conductivity, and filling them in the honeycomb pores 111 can further improve the insulation performance.

[0042] The anti-distortion reinforcing layer 200 comprises a fiber mesh 210 and shape memory alloy micro-springs 220 embedded in the mesh nodes. It should be noted that the fiber mesh 210 can provide additional mechanical support, enhancing the overall rigidity and durability of the material. The shape memory alloy micro-springs 220 can recover to their original shape after being distorted or deformed, giving the material a certain self-repairing ability, thereby improving the anti-distortion and anti-twist ability of the thermal insulation material plate, thereby solving the technical problems existing in the prior art. Further, in some embodiments, the shape memory alloy micro-springs 220 can adopt a Ni-Ti-Cu system. It should be noted that the Ni-Ti-Cu alloy has a wider temperature range of shape memory effect and super-elasticity characteristics compared to pure Ni-Ti alloy. Further, an embodiment is given, the composition of the shape memory alloy micro-spring 220 is Ni 47 Ti 49 Cu4(at%), and the phase transition temperature is -25℃ to 75℃. That is, the shape memory alloy micro-spring 220 made of Ni-Ti-Cu material can realize reversible deformation recovery in a larger temperature range, which can further improve the adaptability of the anti-distortion reinforcing layer 200 in different environments, so that the thermal insulation material plate of the present embodiment can be used in different regions. Compared with traditional thermal insulation material plates, when the micro-spring adopts the Ni-Ti-Cu system, it can further improve the anti-distortion and anti-twist ability of the thermal insulation material plate, and the addition of Cu can improve the cold working performance of the alloy, making it easier to be shaped into a complex shape by conventional mechanical processing methods. That is, by adding Cu, the processing difficulty of the shape memory alloy micro-spring 220 can be reduced, the production cost can be reduced, and it can be understood that due to the reduction of processing difficulty, the manufacturing precision of the micro-spring will also be relatively improved.

[0043] The phase change energy storage core layer 300 comprises a desulfurized gypsum-based porous framework and a fatty acid eutectic phase change material composition encapsulated in the pores of the porous framework. It should be noted that the fatty acid eutectic phase change material (PCM) has high latent heat storage capacity and can absorb or release a large amount of heat while maintaining a relatively stable temperature within a specific temperature range. When the ambient temperature is higher than the phase change temperature of the PCM, the PCM will melt and absorb heat; on the contrary, when the ambient temperature is lower than the phase change temperature of the PCM, the PCM will solidify and release heat. That is, the thermal insulation material plate can effectively regulate indoor temperature in an environment with large diurnal temperature difference or significant seasonal change, reduce dependence on air conditioning and heating systems, and thus improve energy efficiency. At the same time, desulfurized gypsum is an environmentally friendly material made from by-products produced during the industrial waste gas desulfurization process. Its porous structure not only provides good mechanical support but also effectively disperses stress, further enhancing the overall structural strength and deformation resistance of the material. Furthermore, encapsulating the PCM within the desulfurized gypsum-based porous framework not only prevents PCM leakage during use but also ensures the stability and reliability of the PCM during long-term use through the support of the framework. In addition, using desulfurized gypsum as the porous framework can promote the recycling of desulfurized gypsum as an industrial waste treatment. The anti-distortion reinforcing layer 200 is embedded in the phase change storage core layer, and the surface protection layer 100 is fixedly arranged on the phase change energy storage core layer 300. Further, in some embodiments, the thickness of the surface protection layer 100 is 1.5-2 mm, and the thickness of the phase change energy storage core layer 300 is 20-25 mm.

[0044] In an embodiment, the honeycomb pores 111 have a rate of ≥85%, the aerogel particles 120 in the pores have a particle size of 50-200 nm and account for 60-75% of the pore volume. Further, the honeycomb pores 111 have a rate of ≥85%, which allows a large number of air gaps inside the thermal insulation material plate, which can greatly reduce the heat conduction path and thus improve the thermal insulation performance. In addition, high porosity also makes the material more lightweight, facilitating transportation and installation. Furthermore, the aerogel particles 120 in the pores have a particle size of 50-200 nm and account for 60-75% of the pore volume, which can further reduce heat conduction and improve thermal insulation effect.

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

[0046] In an embodiment, the fiber grid 210 is configured as a 3D-printed basalt fiber grid 210. Specifically, basalt fibers have the advantages of high strength, high modulus, good corrosion resistance, and low thermal expansion coefficient. The fiber grid 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 grid 210, and improving productivity.

[0047] In an embodiment, the grid size of the fiber grid 210 is 6mm-10mm*6mm-10mm. Specifically, the design of the grid size of 6mm-10mm*6mm-10mm can provide a certain flexibility while ensuring sufficient support force, avoiding brittle fracture due to excessive rigidity, and also reducing on-site cutting loss (matching the standard module size of 300mm*300mm of building exterior walls), and improving the utilization rate of thermal insulation material boards.

[0048] In an embodiment, referring to 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 can form an oblique interlocking structure between the fiber grid 210 and the core layer, converting shear stress into normal compressive stress, which can better withstand external forces from multiple directions, thereby improving its overall tensile strength and anti-twisting ability; further, the embedding depth is 35%-45% of the total thickness of the phase change energy storage core layer 300, which ensures that the fiber grid 210 and the core layer skeleton form a continuous force transmission path, avoids stress mutation, and 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 an embodiment, referring to Figure 5 , Figure 6, the basalt fiber grid 210 is provided with a first end 211 and a second end 212, the first end 211 and the second end 212 are oppositely arranged, wherein the second end 212 is arranged close to the middle part of the phase change energy storage core layer 300, that is, the first end 211 is arranged away from the middle part 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. Thus, when the basalt fiber grid 210 is embedded in the phase change energy storage layer, the middle part 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, the phase change energy storage layer has a conical spine inserted into the basalt fiber grid 210, and under the action of the conical spine 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 made by 3D printing, and at the same time, a conical groove 230 structure needs to be formed at the intersection of the first end of the basalt fiber grid 210 during production. At this time, the 3D printer needs to have a plurality of conical protrusions, which 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 the mold for making the phase change energy storage core layer 300. At this time, the basalt fiber grid 210 has 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 300, and then the material for making the phase change energy storage core layer 300 is poured into the mold. Further, in an embodiment, the desulfurized gypsum-based porous framework has a porosity of 70-80%. Further, the high porosity provides sufficient space for the fatty acid eutectic phase change material (PCM) to fill. High porosity means that more PCM can be encapsulated in the framework structure, thereby increasing the latent heat storage capacity of the material. This enables the material to absorb or release more heat when the temperature changes, maintaining 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 framework, avoiding local accumulation or voids, thereby improving the efficiency of heat 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 double-nozzle fused deposition system (main nozzle 380°C for printing basalt fiber grid 210, and auxiliary nozzle 200°C for synchronously implanting NiTiCu micro springs), the grid intersection spacing is 8mm, and the fiber diameter is 0.3mm. Further, in order to improve the performance of the micro spring, the micro spring can be pre-compressed by 12%.Further, in some embodiments, for embedding 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, then inject the desulfurized gypsum slurry containing 3wt% foaming agent, and steam curing at 60℃ for 24 hours to form a porous framework with a porosity of 75%; under the condition of 65℃ and 0.1MPa vacuum, the fatty acid eutectic phase change material is impregnated into the pores, and the impregnation time is ≤30 minutes.

[0050] In an 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 is bonded with the phase change energy storage core layer 300, which can effectively reduce the combination difficulty and improve the processing efficiency.

[0051] In an embodiment, referring to Figure 7 , the phase change energy storage core layer 300 is provided with a plurality of grooves 310 at one end facing the surface protection layer 100; one end of the surface protection layer 100 having a honeycomb pore 111 is bonded with 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 can flow into the grooves 310 and the honeycomb pores 111 during 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 force (such as stretching, shearing, etc.), it can effectively prevent interlayer separation and prolong the service life.

[0052] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A non-deformable, non-curling, thermal insulation panel, characterized in that, The application relates to a surface protection layer, an anti-distortion reinforcing layer and a phase-change energy storage core layer. The surface protection layer comprises a honeycomb film and aerogel particles filled in honeycomb pores. The anti-distortion reinforcing layer comprises a fiber grid and shape memory alloy micro-springs embedded in grid nodes. The phase-change energy storage core layer comprises a desulfurized gypsum-based porous framework and a fatty acid eutectic phase-change material group encapsulated in porous framework pores.

2. A board of non-deformable and non-crumpling thermal insulation material according to claim 1, characterised in that The honeycomb porosity is greater than or equal to 85%, the particle size of the aerogel particles in the pores is 50-200 nm, and the aerogel particles account for 60-75% of the pore volume.

3. A board of non-deformable and non-crumpling thermal insulation material according to claim 2, characterised in that The aerogel particles are silica aerogel particles, and the honeycomb film is a polyethylene honeycomb film.

4. A board of non-deformable and non-crumpling thermal insulation material according to claim 3, characterised in that The fiber grid is a 3D-printed basalt fiber grid.

5. A board of non-deformable and non-crumpling thermal insulation material according to claim 4, characterised in that The grid size of the fiber grid is 6-10 mm*6-10 mm.

6. A board of non-deformable and non-crumpling thermal insulation material according to claim 5, characterised in that The fiber grid is embedded in the phase-change energy storage core layer at an inclination angle of 5-10 degrees, and the embedding depth is 35-45% of the total thickness of the phase-change energy storage core layer.

7. A board of non-deformable and non-crumpling thermal insulation material according to claim 6, characterised in that The basalt fiber grid is provided with a first end and a second end, and the first end and the second end are oppositely arranged.

8. A board of non-deformable and non-crumpling thermal insulation material according to claim 7, characterised in that The second end is arranged close to the middle part of the phase-change energy storage core layer, and a conical groove structure is formed at the intersection point of the second end.

9. The non-deforming, kink-resistant insulation panel of claim 1, wherein, The porosity of the desulfurized gypsum-based porous framework is 70-80%, and the pore size distribution is 0.1-0.3 mm.

10. A board of non-deformable and non-crumpling thermal insulation material according to claim 9, characterised in that The surface protection layer is bonded to the phase-change energy storage core layer. The end of the phase-change energy storage core layer facing the surface protection layer is provided with a plurality of grooves. The end of the surface protection layer with the honeycomb pores is bonded to the phase-change energy storage core layer through hot melt adhesive.

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