Aerogel sheet material with multiple layers of base materials

Abstract

The utility model relates to the technical field of aerogel, in particular to a multilayer base material aerogel sheet material which comprises a net-shaped sheet material, a plurality of profile holes are formed in the net-shaped sheet material, and aerogel particles are filled in each profile hole. The composite aerogel sheet material has the effect of solving the problem that an existing composite aerogel sheet material does not have air permeability or is poor in air permeability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aerogel, especially to a multilayer substrate aerogel sheet. BACKGROUND

[0002] Aerogel is a kind of nanometer porous solid material formed by replacing liquid phase in gel with gas through sol-gel method and certain drying method, and it is the solid with the smallest density in the world, which has extremely high porosity, extremely low density, extremely high specific surface area and excellent high-temperature resistance, heat insulation, sound insulation, adsorption and other characteristics, and is widely used in thermal insulation materials, environmental pollution control, sound wave isolation, lightweight composite materials, biomedical and other fields.

[0003] In the prior art, composite aerogel sheets are mainly prepared by compounding aerogel with fiber, glass, metal and other materials to exert the performance of heat insulation and thermal insulation of aerogel, but with the expansion of the application field of aerogel, the demand for new aerogel composite materials is increasing, and in actual application, the existing composite aerogel sheets do not have good air permeability or poor air permeability, which cannot be applied to some working conditions that require certain air permeability, and need to be solved urgently. UTILITY MODEL CONTENT

[0004] In view of the above deficiencies in the prior art, the present application provides a multilayer substrate aerogel sheet.

[0005] The above invention of the present application is realized by the following technical scheme:

[0006] A multilayer substrate aerogel sheet, comprising a net-shaped sheet, the net-shaped sheet is provided with a plurality of profile holes, and each profile hole is filled with aerogel particles.

[0007] By adopting the above technical scheme, the pores of the net-shaped sheet can provide a flow channel for the airflow, ensuring good air permeability, and the aerogel particles filled in the plurality of profile holes of the net-shaped sheet form a plurality of heat insulation points on the entire net-shaped sheet, thereby forming a honeycomb heat insulation structure, so that when the airflow passes through the net-shaped sheet, the honeycomb heat insulation structure can capture and store the heat in the airflow, achieving the effect of heat insulation, and at the same time, due to the extremely low density and extremely high porosity of the aerogel particles, the airflow has small resistance when passing through the honeycomb heat insulation structure, and the airflow can gradually spread around the heat insulation structure, so as to improve the air permeability of the sheet, thereby solving the problem that the existing composite aerogel sheet does not have good air permeability or has poor air permeability.

[0008] The profile hole inner side is provided with an adhesive, and the aerogel particles are fixedly connected with the profile hole through the adhesive.

[0009] By adopting the above technical scheme, the adhesive is arranged to ensure that the aerogel particles are tightly combined with the inner wall of the profile hole after drying, and the possibility of the aerogel particles being detached or displaced under external force is reduced.

[0010] In a preferred example, the mesh sheet is made of a plurality of substrate layers which are sequentially compounded and stacked by adhesive.

[0011] By adopting the above technical scheme, the plurality of substrate layers are compounded by adhesive to form a stable multi-layer structure, which can improve the overall strength of the sheet, and the number of substrate layers can be selected by the technician according to the actual working condition.

[0012] In a preferred example, the aerogel particles are filled into the profile hole by coating.

[0013] By adopting the above technical scheme, the coating method is used for filling, which can ensure the uniform distribution of the aerogel particles in the profile hole, avoid particle accumulation or excessive gap, thereby improving the overall performance of the sheet, and can be suitable for the bonding between different material layers, realizing the lightweight design of the aerogel sheet to reduce the weight of the sheet, and the process is simple and easy to operate.

[0014] In a preferred example, the thickness of the substrate layer is 0.5mm-10mm, and the pore size of the profile hole is 0.5mm-30mm.

[0015] In a preferred example, the shape of the profile hole is circular or polygonal.

[0016] In summary, the present application has the following at least one beneficial technical effect:

[0017] 1、The pores of the mesh sheet can provide a flow channel for the airflow, ensuring that it has good air permeability, and the aerogel particles filled in the profile holes on the mesh sheet form a number of heat insulation points on the entire mesh sheet, thereby forming a honeycomb heat insulation structure, so that when the airflow passes through the mesh sheet, the honeycomb heat insulation structure can capture and store the heat in the airflow, achieving the effect of heat insulation, and at the same time, due to the extremely low density and extremely high porosity of the aerogel particles, the airflow experiences less resistance when passing through the honeycomb heat insulation structure, and the airflow can gradually pass through the pores of the mesh sheet to improve the air permeability of the sheet, thereby solving the problem that the current composite aerogel sheet does not have air permeability or has poor air permeability.

[0018] 2、By setting the adhesive, the aerogel particles can be tightly combined with the inner wall of the profile hole after drying, reducing the possibility of the aerogel particles falling off or displacing under external force.

[0019] 3、By using the coating method for filling, the uniform distribution of the aerogel particles in the profile hole can be ensured, avoiding particle accumulation or excessive voids, thereby improving the overall performance of the sheet, and at the same time, it can be suitable for the bonding between different material layers, realizing the lightweight design of the aerogel sheet, reducing the weight of the sheet, and the process is simple and easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the multi-layer substrate aerogel sheet in an embodiment of the present application;

[0021] Figure 2 is the cross-sectional structure schematic diagram of the multi-layer substrate aerogel sheet in an embodiment of the present application.

[0022] Reference signs: 1, mesh sheet; 2, profile hole; 3, aerogel particle; 4, adhesive; 5, substrate layer. DETAILED DESCRIPTION

[0023] The exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to help understanding, and should be considered as merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Also, in order to be clear and concise, the description below omits the description of well-known functions and structures.

[0024] It should be noted that the terms "first", "second", and the like in the present utility model are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0025] In addition, the term "and / or" herein merely describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects unless otherwise specified.

[0026] A multi-layer substrate aerogel sheet of the present application is described below with reference to the accompanying drawings.

[0027] As shown in Figure 1 and Figure 2 The multi-layer substrate aerogel sheet includes a mesh sheet 1 having a plurality of profile holes 2, the profile holes 2 being circular or polygonal in shape, which is not limited here, and each profile hole 2 being filled with aerogel particles 3. The porosity of the mesh sheet 1 can provide a flow path for the airflow, ensuring good air permeability. The aerogel particles 3 filled in the plurality of profile holes 2 of the mesh sheet 1 form a plurality of heat insulation points on the entire mesh sheet 1, thereby forming a honeycomb heat insulation structure. When the airflow passes through the mesh sheet 1, the honeycomb heat insulation structure can capture and store heat in the airflow, achieving the effect of heat insulation. Due to the extremely low density and high porosity of the aerogel particles 3, the airflow experiences less resistance when passing through the honeycomb heat insulation structure. The airflow can gradually pass through the porosity of the mesh sheet 1 to improve the air permeability of the sheet, thereby solving the problem of poor air permeability of the current composite aerogel sheet.

[0028] It should be noted that the proportion between the total area of the aerogel particles 3 in the plurality of profile holes 2 and the total area of the mesh sheet 1 will be different depending on the application scenario and the required heat insulation index, in order to coordinate the heat insulation performance and air permeability required in the actual application scenario.

[0029] Further, the profile hole 2 is provided with an adhesive 4, and the aerogel particles 3 are fixedly connected to the profile hole 2 by the adhesive 4. By providing the adhesive 4, the aerogel particles 3 can be tightly combined with the inner wall of the profile hole 2 after drying, reducing the possibility of the aerogel particles 3 falling off or displacing under external force.

[0030] In addition, the mesh sheet 1 is made of a plurality of base material layers 5 which are sequentially compounded and stacked by the adhesive 4, and the plurality of base material layers 5 are compounded by the adhesive 4 to form a stable multi-layer structure, which can improve the overall strength of the sheet, and facilitate the selection of the number of base material layers 5 by the technician according to the actual working condition.

[0031] Specifically, the base material layer 5 can be selected as a textile or an ultra-thin metal material, and the textile can be selected from chemical fiber, glass fiber, carbon fiber, aramid fiber, pre-oxidized fiber, cotton and the like; the ultra-thin metal material can be selected from aluminum foil, copper foil, metal woven material and the like, and the technician can select the material of each base material layer 5 according to the actual application scene, for example, when used on warm clothing, the mesh sheet 1 can be made of a plurality of textile base material layers 5 stacked together; when used on fireproof clothing, the mesh sheet 1 can be made of a plurality of glass fiber base material layers 5 and textile base material layers 5 stacked together; when used on mechanical equipment, the mesh sheet 1 can be made of a plurality of textile base material layers 5 and metal woven material base material layers 5 stacked together, and the like, which is not limited here.

[0032] It should be noted that in an embodiment, when the base material layers 5 are compounded and stacked by the adhesive 4, part of the adhesive 4 will overflow to the edge of the inner wall of the profile hole 2 to fix the aerogel particles 3, thereby simplifying the filling step of the adhesive 4 and improving the production efficiency of the sheet.

[0033] In addition, the aerogel particles 3 are filled into the profile hole 2 by coating, which can ensure the uniform distribution of the aerogel particles 3 in the profile hole 2, avoid particle accumulation or excessive gap, thereby improving the overall performance of the sheet, and at the same time, can be suitable for the lamination between different material layers, realize the lightweight design of the aerogel sheet, reduce the weight of the sheet, and the process is simple and easy to operate.

[0034] Preferably, in an embodiment, the thickness of the base material layer 5 is 0.5-10mm, and the pore size of the profile hole 2 is 0.5-30mm, the use of the base material layer 5 with the thickness range and the profile hole 2 with the pore size range can play the excellent heat insulation effect of aerogel and the air permeability of the sheet, complete the structure design of the aerogel sheet, and it should be noted that according to different application scenes, the thickness of the base material layer 5 will increase, so that the thickness of the mesh sheet 1 after stacking a plurality of base material layers 5 increases.

[0035] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A multi-layer substrate aerogel sheet, characterized in that: include: A mesh sheet (1) is provided with a plurality of profile holes (2), and each profile hole (2) is filled with aerogel particles (3).

2. The multi-layer substrate aerogel sheet according to claim 1, wherein: An adhesive (4) is provided inside the profile hole (2), and the aerogel particles (3) are fixedly connected to the profile hole (2) via the adhesive (4).

3. The multi-layer substrate aerogel sheet according to claim 1, characterized in that: The mesh sheet (1) is made of a plurality of base material layers (5) which are laminated in sequence via an adhesive (4).

4. The multi-layer substrate aerogel sheet according to claim 1, wherein: The aerogel particles (3) are filled into the profile holes (2) by coating.

5. The multi-layer substrate aerogel sheet according to claim 3, characterized in that: The thickness of the substrate layer (5) is 0.5 mm to 10 mm, and the diameter of the profile hole (2) is in the range of 0.5 mm to 30 mm.

6. The multi-layer substrate aerogel sheet according to claim 1, characterized in that: The shape of the profile hole (2) is circular or polygonal.

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