Aerogel composite structure with high aerogel content
By using hollow structure porous materials and non-hollow structure layers in the aerogel composite, the problem of insufficient aerogel content in traditional technology is solved, and a higher aerogel impregnation amount is achieved.
Patent Information
- Application Number
- CN202420030065.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-01-05
AI Technical Summary
Due to the upper limit of the concentration of the hydrolyzate in traditional aerogel composites, the aerogel content is limited, and the filling space cannot be fully utilized, which limits the impregnation amount of the aerogel.
The porous material with hollow structure is used as the substrate to increase the filling space of the aerogel, and the impregnation amount of the aerogel is increased by stacking the hollow structure layer and the non-hollow structure layer.
The aerogel content of the aerogel composite material is significantly improved, the filling space is increased, and a higher aerogel impregnation amount is achieved.
Smart Images
Figure CN222362050U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of aerogel composites, and in particular relates to an aerogel composite structure with high aerogel content. Background Art
[0002] The traditional preparation method of aerogel composites is to select single-layer or laminated porous materials, and prepare them through dipping, gelation, aging, hydrophobic modification and special drying processes. Because the concentration of the hydrolyzate has an upper limit and the aerogel felt itself occupies a large amount of space, the aerogel content impregnated inside the aerogel composite is limited. Utility Model Content
[0003] The utility model provides an aerogel composite structure with high aerogel content, which increases the filling space of the aerogel by using a porous material with a hollow structure and improves the impregnated aerogel content.
[0004] The technical solution adopted by the utility model is:
[0005] An aerogel composite structure with a high aerogel content includes a porous material layer and an aerogel impregnated and grown in the gaps of the porous material layer, wherein the porous material layer includes a hollow structure layer, the hollow structure layer includes at least one hollow material layer, and a hollow structure is provided on the hollow material layer. The hollow structure is not the pores of the porous material itself, but a new shape produced by additional mechanical processing.
[0006] As a preferred solution of the utility model, the hollow structure includes at least one hollow unit, and the maximum linear size of the smallest hollow unit is 1-10 mm. That is, the hollow pattern can be composed of one figure or multiple figures.
[0007] As a preferred solution of the utility model, the hollow structure layer includes at least two hollow material layers, adjacent hollow material layers are stacked, and aerogel grows in the hollow gaps of the hollow material layers, the pores of the hollow material layers and the interlayer gaps of adjacent hollow material layers.
[0008] As a preferred solution of the utility model, the hollow structures of different hollow material layers are the same or different; and / or the thicknesses of different hollow material layers are the same or different. When different hollow material layers are stacked, the hollow positions can be aligned or misaligned.
[0009] As a preferred solution of the utility model, the porous material layer also includes a non-hollow structure layer, and the non-hollow structure layer includes at least one non-hollow material layer, and the hollow material layer and the non-hollow material layer are stacked. The porous materials of the two structures are stacked.
[0010] As a preferred embodiment of the present invention, the minimum stacking repeating unit formed by stacking the hollow material layer and the non-hollow material layer includes a hollow structure layer I and a non-hollow structure layer I, the hollow structure layer I and the non-hollow structure layer I are stacked, and the hollow structure layer I includes at least one hollow material layer, and the non-hollow structure layer I includes at least one non-hollow material layer. Aerogel grows in the hollow spaces of the hollow material layer, the pores of the hollow material layer, the interlayer gaps of adjacent hollow material layers, the pores of the non-hollow material layer, the gaps between the hollow material layer and the non-hollow material layer, and the interlayer gaps of adjacent non-hollow material layers. The specific growth position is related to the material layer used.
[0011] As a preferred embodiment of the present invention, the minimum stacking repeating unit formed by stacking hollow material layers and non-hollow material layers includes a hollow structure layer I, a non-hollow structure layer I and a hollow structure layer II, and the non-hollow structure layer I is located between the hollow structure layer I and the hollow structure layer II; and the hollow structure layer I includes at least one hollow material layer, the hollow structure layer II includes at least one hollow material layer; the non-hollow structure layer I includes at least one non-hollow material layer.
[0012] As a preferred embodiment of the present invention, the minimum stacking repeating unit formed by stacking hollow material layers and non-hollow material layers includes a hollow structure layer I, a non-hollow structure layer I and a non-hollow structure layer II, and the hollow structure layer I is located between the non-hollow structure layer I and the non-hollow structure layer II; and the hollow structure layer I includes at least one hollow material layer, the non-hollow structure layer I includes at least one non-hollow material layer, and the non-hollow structure layer II includes at least one non-hollow material layer.
[0013] As a preferred solution of the utility model, the thickness of the hollow material layer is 0.1-10 mm; the thickness of the non-hollow material layer is 0.1-10 mm.
[0014] As a preferred embodiment of the present invention, the porous material layer has an open porosity of not less than 50% and a minimum pore size of micrometers; the porous material layer is any one of fiber needle felt, fiber wet felt, fiber paper, fiber cloth, fiber cotton, fiber woven board, porous foam board, porous foam board, porous metal board, and porous ceramic board.
[0015] As a preferred embodiment of the present invention, aerogel can be organic aerogel and inorganic aerogel. Inorganic aerogels include silica aerogel, carbon aerogel, metal oxide aerogel, mixed oxide aerogel, and composite aerogel. Organic aerogels include PI aerogel, polyurethane aerogel, PTFE aerogel, PET aerogel, and PEN aerogel.
[0016] The utility model adopts a porous material layer with a hollow structure as a base material, which increases the filling space of the aerogel, thereby increasing the aerogel content of the aerogel composite porous material. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a schematic diagram of a hollow material layer with different hollow shapes according to the utility model.
[0019] Figure 2 It is a schematic diagram of the hollow material layer of the prismatic grid shape of the utility model.
[0020] Figure 3 It is a schematic diagram of the square-shaped hollow material layer of the utility model.
[0021] Figure 4 It is a schematic diagram of a hollow material layer with a circular hole shape according to the utility model.
[0022] Figure 5 The utility model has only one hollow material layer thickness section Figure 1 .
[0023] Figure 6 The utility model has only one hollow material layer thickness section Figure 2 .
[0024] Figure 7 It is a thickness section diagram of two stacked hollow material layers of the utility model.
[0025] Figure 8 It is a thickness section diagram of three stacked hollow material layers of the utility model.
[0026] Fig. 9 It is a schematic diagram of the structure of stacking a hollow material layer and a non-hollow material layer according to the utility model. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] Embodiment 1:
[0029] An aerogel composite structure with a high aerogel content, comprising a porous material layer and aerogel impregnated and grown in the gaps of the porous material layer, wherein the porous material layer comprises a hollow structure layer, wherein the hollow structure layer comprises at least one hollow material layer 1, and a hollow structure is provided on the hollow material layer. The hollow structure is not the pores of the porous material itself, but a new shape produced by additional mechanical processing. Furthermore, the hollow structure comprises at least one hollow unit, and the maximum linear dimension of the smallest hollow unit is 1-10 mm. That is, the hollow pattern can be composed of one graphic or multiple graphics. When one graphic is used, it can be as follows Figure 2-4 The structure shown in the figure can be formed as follows: Figure 1 The structure shown.
[0030] When the hollow structure layer has only one hollow material layer, the thickness of the hollow material layer is 0.1-10mm, and the screenshot in the thickness direction can be as follows: Figure 5 Or the structure shown in 6, the aerogel grows in the hollow gaps of the hollow material layer and the pores of the hollow material layer itself.
[0031] The porous material layer used has an open porosity of not less than 50% and a pore size of at least micrometer level; the porous material layer is any one of fiber needle felt, fiber wet felt, fiber paper, fiber cloth, fiber cotton, fiber woven board, porous foam board, porous foam board, porous metal board, and porous ceramic board.
[0032] Aerogels can be organic aerogels and inorganic aerogels. Inorganic aerogels include silica aerogels, carbon aerogels, metal oxide aerogels, mixed oxide aerogels, and composite aerogels. Organic aerogels include PI aerogels, polyurethane aerogels, PTFE aerogels, PET aerogels, and PEN aerogels.
[0033] Embodiment 2:
[0034] A high-aerogel content aerogel composite structure comprises a porous material layer and an aerogel impregnated and grown in the gaps of the porous material layer, wherein the porous material layer comprises a hollow structure layer, wherein the hollow structure layer comprises at least two hollow material layers, and adjacent hollow material layers are stacked and arranged, and the aerogel grows in the hollow gaps of the hollow material layer, the pores of the hollow material layer, and the interlayer gaps of adjacent hollow material layers. When two hollow material layers are used, Figure 7 As shown, when three hollow material layers are used, Figure 8 As shown, the hollow structures of different hollow material layers are the same or different; the thicknesses of different hollow material layers are the same or different, and the hollow positions of different hollow material layers can be aligned or misaligned when stacked. The rest is the same as in Example 1.
[0035] Embodiment 3:
[0036] An aerogel composite structure with high aerogel content, wherein the porous material layer includes a hollow structure layer and a non-hollow structure layer, the hollow structure layer includes at least one hollow material layer 1, the non-hollow structure layer includes at least one non-hollow material layer 2, and the hollow material layer and the non-hollow material layer are stacked. The porous materials of the two structures are stacked.
[0037] The specific stacking method is designed according to actual needs. The minimum stacking repeating unit composed of the stacking of the hollow material layer and the non-hollow material layer includes a hollow structure layer I and a non-hollow structure layer I. The hollow structure layer I and the non-hollow structure layer I are stacked, and the hollow structure layer I includes at least one hollow material layer, and the non-hollow structure layer I includes at least one non-hollow material layer. Aerogel grows in the hollow space of the hollow material layer, the pores of the hollow material layer, the interlayer gaps of adjacent hollow material layers, the pores of the non-hollow material layer, the gaps between the hollow material layer and the non-hollow material layer, and the interlayer gaps of adjacent non-hollow material layers. The specific growth position is related to the material layer used. That is, there can be only one hollow material layer and one non-hollow material layer, or multiple hollow material layers can be stacked and then stacked with a non-hollow material layer, or a hollow material layer can be stacked with multiple non-hollow material layers, and then stacked again, or multiple hollow material layers can be stacked and then stacked with multiple stacked non-hollow material layers. The thickness of each material layer can be the same or different. The thickness of the hollow material layer is 0.1-10mm; the thickness of the non-hollow material layer is 0.1-10mm; the hollow structure of each hollow material layer can also be the same or different, and the rest is the same as Example 1.
[0038] Embodiment 4:
[0039] A composite aerogel structure with high aerogel content, wherein the minimum stacking repeating unit formed by stacking a hollow material layer and a non-hollow material layer comprises a hollow structure layer I, a non-hollow structure layer I and a hollow structure layer II, wherein the non-hollow structure layer I is located between the hollow structure layer I and the hollow structure layer II; and the hollow structure layer I comprises at least one hollow material layer, the hollow structure layer II comprises at least one hollow material layer; and the non-hollow structure layer I comprises at least one non-hollow material layer. That is, the two outer sides are hollow material layers, and the middle is a non-hollow material layer. The number of layers of each material layer is not limited, and can be all one layer, can be all multiple layers, or can be a combination of a single layer and multiple layers, and the rest is the same as in Example 3.
[0040] Embodiment 5:
[0041] An aerogel composite structure with high aerogel content, the minimum stacking repeating unit formed by stacking hollow material layers and non-hollow material layers includes a hollow structure layer I, a non-hollow structure layer I and a non-hollow structure layer II, the hollow structure layer I is located between the non-hollow structure layer I and the non-hollow structure layer II; and the hollow structure layer I includes at least one hollow material layer 1, the non-hollow structure layer I includes at least one non-hollow material layer 2, and the non-hollow structure layer II includes at least one non-hollow material layer 2. That is, the two outer sides are non-hollow material layers, the middle is a hollow material layer, and the number of layers of each material layer is not limited, such as Fig. 9 As shown, the structure uses two hollow material layers with different hollow structures in the middle, and the rest is the same as Example 3.
[0042] In the description of this specification, the description of reference terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An aerogel composite structure with a high aerogel content, characterized in that: It includes a porous material layer and an aerogel impregnated and grown in the gaps of the porous material layer, wherein the porous material layer includes a hollow structure layer and a non-hollow structure layer, wherein the hollow structure layer includes at least one hollow material layer, and a hollow structure is provided on the hollow material layer; wherein the non-hollow structure layer includes at least one non-hollow material layer, and the hollow material layer and the non-hollow material layer are stacked and placed; The minimum stacking repeating unit formed by stacking the hollow material layer and the non-hollow material layer includes a hollow structure layer I, a non-hollow structure layer I and a hollow structure layer II, and the non-hollow structure layer I is located between the hollow structure layer I and the hollow structure layer II; The hollow structure layer I includes at least one hollow material layer, and the hollow structure layer II includes at least one hollow material layer; The non-hollow structure layer I includes at least one non-hollow material layer.
2. The aerogel composite structure with high aerogel content according to claim 1, characterized in that: The hollow structure includes at least one hollow unit, and the maximum linear dimension of the smallest hollow unit is 1-10 mm.
3. The aerogel composite structure with high aerogel content according to claim 2, characterized in that: The hollow structure layer comprises at least two hollow material layers, adjacent hollow material layers are stacked, and aerogel grows in the hollow spaces of the hollow material layers, the pores of the hollow material layers and the interlayer spaces of adjacent hollow material layers.
4. The aerogel composite structure with high aerogel content according to claim 3, characterized in that: The hollow structures of different hollow material layers are the same or different; and / or the thicknesses of different hollow material layers are the same or different.
5. The aerogel composite structure with high aerogel content according to claim 1, characterized in that: The thickness of the hollow material layer is 0.1-10 mm; the thickness of the non-hollow material layer is 0.1-10 mm.
6. The aerogel composite structure with high aerogel content according to claim 1, 2, 3 or 5, characterized in that: The porous material layer has an open porosity of not less than 50% and a pore size of at least micrometer level; the porous material layer is any one of fiber needle felt, fiber wet felt, fiber paper, fiber cloth, fiber cotton, fiber woven board, porous foam board, porous foam board, porous metal board, and porous ceramic board.