Aerogel heat preservation and insulation board

Abstract

The utility model provides an aerogel heat preservation and insulation plate which comprises a vacuum packaging aerogel plate and a protective layer, and the protective layer wraps the outer surface of the vacuum packaging aerogel plate. The aerogel heat preservation and insulation plate provided by the utility model has the characteristics of custom prefabrication of specification, size and shape, thin thickness, ultralow heat conductivity coefficient, high fire resistance grade and the like, and also overcomes the defects of brittle structure and small specification of a single aerogel material. The aerogel heat preservation and insulation plate can be used for heat preservation and insulation of building outer walls, equipment pipeline heat preservation shells, various high-temperature and low-temperature industrial furnace bodies and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation and heat insulating enclosure materials, in particular to an aerogel thermal insulation board. Background Art

[0002] Aerogel has ultra-low thermal insulation performance, but is limited by its own brittle structure, poor mechanical properties, small size, and inability to bend freely, which greatly affects the development and application of aerogel. To solve these shortcomings of pure aerogel, the industry mostly uses aerogel to connect fiber materials to make felt or boards, but this leads to the reduction of the excellent thermal performance of aerogel, the surface becomes powdery and soft, the fire resistance limit is poor, and there are water-filled voids. In addition, this type of product is soft in texture and lacks the protection of lightweight hard materials, and cannot meet the use in different fields. Utility Model Content

[0003] The purpose of the utility model is to provide an aerogel thermal insulation board, which mainly solves the problems existing in the above-mentioned prior art: one is how to overcome the problem of small specifications of the existing aerogel thermal insulation board; the second is how to overcome the problem of brittle texture of the existing aerogel thermal insulation board; and the third is how to make the aerogel thermal insulation board have a lower ultra-low thermal conductivity coefficient.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An aerogel thermal insulation board is characterized in that the aerogel thermal insulation board comprises a vacuum-encapsulated aerogel board and a protective layer, wherein the protective layer is wrapped around the outer surface of the vacuum-encapsulated aerogel board.

[0006] Furthermore, the vacuum-encapsulated aerogel board is a thermal insulation board formed by vacuum-compressing and encapsulating aerogel particle powder.

[0007] Furthermore, the protective layer is made of polymer foam concrete.

[0008] Furthermore, the outer surface of the vacuum-encapsulated aerogel plate is coated with an interface agent, and the vacuum-encapsulated aerogel plate coated with the interface agent is wrapped by a protective layer.

[0009] Furthermore, the interface agent is made of a composite water-based polymer waterproof coating.

[0010] Furthermore, the aerogel thermal insulation board also includes a thermal insulation connecting fixture, which clamps the vacuum-encapsulated aerogel board. The vacuum-encapsulated aerogel board clamped by the thermal insulation connecting fixture is wrapped by a protective layer.

[0011] Furthermore, the thermal insulation connection fixture includes a base, the base is provided with a clamping portion, the clamping portion includes a first clamping portion and a second clamping portion, and a clamping opening for clamping the vacuum-encapsulated aerogel plate is formed between the first clamping portion and the second clamping portion;

[0012] A first connecting portion for connecting to a first inverted hook gripper and a second connecting portion for connecting to a second inverted hook gripper are also provided on the base outside the clamping portion. A fixing port for fixing the vacuum-encapsulated aerogel plate is formed between the first inverted hook gripper and the second inverted hook gripper, and the positions of the fixing port and the clamping port correspond to each other.

[0013] Furthermore, a third connecting portion protruding outward is provided between the first clamping portion and the base, and a fourth connecting portion protruding outward is provided between the second clamping portion and the base;

[0014] The first inverted hook grip and / or the second inverted hook grip and / or the first connecting part and / or the second connecting part and / or the third connecting part and / or the fourth connecting part and / or the base are provided with through holes or grooves, and the polymer foam concrete of the protective layer is embedded in the through holes or grooves.

[0015] Furthermore, the third connecting portion and the fourth connecting portion are arc-shaped;

[0016] The outer side surface of the heat-insulating connection fixing member formed by the base, the first connecting part, the second connecting part, the first inverted hook grip and the second inverted hook grip is square, and the fixing opening is opened on one of the four sides of the square;

[0017] The heat-insulating connecting fixtures are fixed in pairs on both sides of the vacuum-packaging aerogel plate.

[0018] Furthermore, the outer surface of the protective layer is provided with an alkali-resistant mesh cloth;

[0019] The thermal insulation connection fixing piece is made of plastic material.

[0020] In view of the above technical features, the utility model has the following beneficial effects:

[0021] 1. The aerogel insulation board of the present invention utilizes vacuum-encapsulated aerogel particle powder to form a vacuum-encapsulated aerogel board. This board has a lower ultra-low thermal conductivity, is more flexible in shape, and can be thinner. This aerogel insulation board overcomes the problem of the small size of existing aerogel insulation boards.

[0022] 2. The aerogel thermal insulation panel of the present invention is provided with a protective layer made of polymer foam concrete. Because polymer foam concrete has excellent integrated physical properties such as light weight and high strength, thermal insulation, fire resistance, sound insulation, water resistance, and resistance to chloride ion corrosion, it serves as a protective layer or layer for the vacuum-encapsulated aerogel panel. This protects the vacuum-encapsulated bag, preventing the vacuum from being broken and losing its thermal insulation properties, while also increasing its thermal insulation performance and fire resistance limit. It also improves the strength of the aerogel thermal insulation panel, achieving high-strength performance. The aerogel thermal insulation panel of the present invention overcomes the brittleness problem of existing aerogel thermal insulation panels.

[0023] 3. In order to ensure a strong bond between the interface of the vacuum-encapsulated bag and the polymer foam concrete (i.e., a stronger connection between the vacuum-encapsulated aerogel board and the protective layer), the surface of the vacuum-encapsulated bag (i.e., the surface of the vacuum-encapsulated aerogel board) is coated with a water-based polymer interface agent, and thermal insulation fasteners are installed. Alkali-resistant mesh cloth is used to cast and wrap the inorganic lightweight polymer foam concrete to form an integrated, ultra-thin, high-performance thermal insulation material (i.e., the aerogel thermal insulation board). The aerogel thermal insulation board in this utility model overcomes the problems of "sandwich" delamination and deformation between the vacuum-encapsulated aerogel board and the protective layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an aerogel thermal insulation board in specific embodiment 1.

[0025] Figure 2 It is an axonometric view of the thermal insulation connection fixing member in specific embodiment 1.

[0026] Figure 3 2 is a cross-sectional view of the thermal insulation connecting fixture in specific embodiment 1.

[0027] In the figure: 1. Protective layer; 2. Vacuum-encapsulated aerogel plate; 3. Thermal insulation connection fixture; 4. Interface agent; 5. Alkali-resistant mesh cloth; 30. Through hole; 31. Base; 321. First connecting part; 322. Second connecting part; 331. First inverted hook gripper; 332. Second inverted hook gripper; 341. Third connecting part; 342. Fourth connecting part; 351. First clamping part; 352. Second clamping part; 36. Clamping port; 37. Fixing port. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should also be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined by the appended claims.

[0029] See also Figures 1 to 3 Specific embodiment 1, this embodiment 1 provides an aerogel thermal insulation board, which includes a vacuum-encapsulated aerogel board 2 and a protective layer 1, wherein the protective layer 1 is wrapped around the outer surface of the vacuum-encapsulated aerogel board 2. The vacuum-encapsulated aerogel board 2 is a thermal insulation board formed by vacuum-compression encapsulation of aerogel particle powder.

[0030] The protective layer 1 is made of polymer foam concrete, such as the "polymer foam concrete" mentioned in the patent number: CN201710968790.6, the invention name of which is "Polymer foam concrete, its preparation method and use", which has better thermal insulation effect, is lighter, has good compressive resistance and good overall strength.

[0031] The outer surface of the vacuum-encapsulated aerogel plate 2 is also coated with an interface agent 4, and the vacuum-encapsulated aerogel plate 2 coated with the interface agent 4 is wrapped by a protective layer 1. The interface agent 4 is made of a composite water-based polymer waterproof coating, such as the "composite water-based polymer waterproof coating" mentioned in the patent number: CN201410442528.4, and the invention name is "Composite Water-Based Polymer Waterproof Coating and Its Manufacturing Method". The interface agent 4 is applied to the surface of the vacuum-encapsulated bag (i.e., the outer surface of the vacuum-encapsulated aerogel plate 2) to form a flexible film layer with good toughness, which serves to firmly bond the vacuum-encapsulated aerogel plate 2 to the polymer foam concrete (i.e., the protective layer 1). At the same time, the interface agent 4 can also improve the puncture resistance of the surface of the vacuum-encapsulated bag (i.e., the outer surface of the vacuum-encapsulated aerogel plate 2).

[0032] The aerogel thermal insulation panel also includes a thermal insulation connection fixture 3, which clamps the vacuum-encapsulated aerogel panel 2. The vacuum-encapsulated aerogel panel 2 clamped by the thermal insulation connection fixture 3 is wrapped by the protective layer 1. The thermal insulation connection fixture 3 is made of a plastic material, which is a thermal insulation material, so that the thermal insulation connection fixture 3 has a thermal insulation effect.

[0033] For example, the thermal insulation connection fixture 3 includes a base 31, and a clamping portion is provided on the base 31. The clamping portion includes a first clamping portion 351 and a second clamping portion 352. A clamping opening 36 for clamping the vacuum-encapsulated aerogel plate 2 is formed between the first clamping portion 351 and the second clamping portion 352; a first connecting portion 321 for connecting the first inverted hook gripper 331 and a second connecting portion 322 for connecting the second inverted hook gripper 332 are also provided on the base 31 other than the clamping portion. A fixing opening 37 for fixing the vacuum-encapsulated aerogel plate 2 is formed between the first inverted hook gripper 331 and the second inverted hook gripper 332, and the fixing opening 37 and the clamping opening 36 correspond in position to each other.

[0034] A third connecting portion 341 protruding outward is provided between the first clamping portion 351 and the base 31 , and a fourth connecting portion 342 protruding outward is provided between the second clamping portion 352 and the base 31 . The third connecting portion 341 and the fourth connecting portion 342 are arc-shaped.

[0035] The outer side surface of the heat-insulating connecting fixture 3 formed by the base 31 , the first connecting portion 321 , the second connecting portion 322 , the first inverted hook grip 331 and the second inverted hook grip 332 is square, and the fixing opening 37 is opened on one of the four sides of the square.

[0036] The square thermal insulation connection fixture 3 makes it easier to place the vacuum-encapsulated aerogel plate 2 in the mold in a suspended manner using the thermal insulation connection fixture 3, which facilitates the subsequent pouring of polymer foam concrete. The position of the vacuum-encapsulated aerogel plate 2 in the mold is more stable before and during pouring.

[0037] The first inverted hook grip 331, the second inverted hook grip 332, the first connecting portion 321, the second connecting portion 322, the third connecting portion 341, the fourth connecting portion 342, and the base 31 are all provided with through holes 30 or grooves, and the polymer foam concrete of the protective layer 1 is embedded in the through holes 30 or grooves. After the polymer foam concrete solidifies and generates strength, the connection between the protective layer 1 (i.e., polymer foam concrete) and the insulating connecting fixture 3 is more firmly connected, indirectly improving the connection strength between the protective layer 1 (i.e., polymer foam concrete) and the vacuum-encapsulated aerogel plate 2, thereby avoiding stratification or deformation between the protective layer 1 (i.e., polymer foam concrete) and the vacuum-encapsulated aerogel plate 2. When in use, the edge of the vacuum-encapsulated aerogel plate 2 in the thickness direction is embedded in the fixing port 37, the first clamping part 351 and the second clamping part 352 are pulled open (for example, the two arc-shaped third connecting parts 341 and the fourth connecting parts 342 are pulled outward), the vacuum-encapsulated aerogel plate 2 is placed at the clamping port 36, the first clamping part 351 and the second clamping part 352 are released, and the vacuum-encapsulated aerogel plate 2 is clamped by the first clamping part 351 and the second clamping part 352. At this time, the first inverted hook gripper 331 and the second inverted hook gripper 332 respectively press against the two sides of the vacuum-encapsulated aerogel plate 2, and the auxiliary clamping part fixes the vacuum-encapsulated aerogel plate 2.

[0038] In this embodiment 1, the thermal insulation connecting fixtures 3 are fixed in pairs on both sides of the vacuum-encapsulated aerogel plate 2 .

[0039] The outer surface of the protective layer 1 is further provided with an alkali-resistant mesh cloth 5 to prevent the aerogel thermal insulation board from deforming and improve the anti-settling property of the aerogel thermal insulation board.

[0040] The processing process of the aerogel thermal insulation board in this embodiment 1 is as follows:

[0041] First, the aerogel is crushed to make it into a granular powder, and then the crushed aerogel granular powder is put into a bag, and the air in the bag is extracted and then packaged to form a vacuum-encapsulated aerogel plate 2. At this time, the shape and size of the vacuum-encapsulated aerogel plate 2 can be designed according to actual needs, that is, freely customized, and the shape can be freely made according to the mold, avoiding the problem of the size and shape of existing pure aerogel. The use of vacuum packaging technology can reduce the thermal conductivity of the aerogel thermal insulation board to 0.004~0.007W / (m·K), which is more than three times lower than the thermal conductivity of pure aerogel of 0.012~0.024W / (m·K), and the problem of pure aerogel being brittle and unusable is solved by adding a protective layer 1. The vacuum-encapsulated aerogel plate 2 in this embodiment 1 can be an ultra-thin and ultra-low thermal conductivity thermal insulation plate. Aerogel granular powder is easy to make into a more uniform and flat thin plate, forming an ultra-thin vacuum-encapsulated aerogel plate 2.

[0042] Secondly, the interface agent 4 is evenly coated on the surface of the vacuum-encapsulated aerogel plate 2 (i.e., the surface of the bag), and a plurality of heat-insulating connecting fixtures 3 are used to clamp the two sides of the vacuum-encapsulated aerogel plate 2 (e.g., Figure 1 Thermal insulation connecting fixtures 3 are distributed and installed on the upper and lower sides of the vacuum-encapsulated aerogel plate 2 and in the thickness direction of the vacuum-encapsulated aerogel plate 2 along the edge of the vacuum-encapsulated aerogel plate 2).

[0043] Then, alkali-resistant mesh cloth 5 is laid on both sides of the mold, and the vacuum-encapsulated aerogel plate 2 is placed in the mold, so that the vacuum-encapsulated aerogel plate 2 with the thermal insulation connection fixture 3 installed is stuck in the mold. At this time, under the fixation of the thermal insulation connection fixture 3, the vacuum-encapsulated aerogel plate 2 is located in the middle position of the mold, and the slurry of polymer foam concrete is poured into the mold. It is vibrated to make it dense and smooth and its surface is smoothed. After the polymer foam concrete solidifies and generates strength, the aerogel thermal insulation board is formed. The thermal insulation connection fixture 3 plays a role in positioning the vacuum-encapsulated aerogel plate 2 in the mold in the early stage (that is, before the polymer foam concrete solidifies). The thermal insulation connection fixture 3 plays a role in connecting the polymer foam concrete and the vacuum-encapsulated aerogel plate 2 in the later stage (that is, after the polymer foam concrete solidifies).

[0044] During the above process, the interface agent 4, the auxiliary insulation connection fixture 3 and the surface-laid alkali-resistant mesh cloth 5 make the product integrated to avoid "sandwich" delamination and deformation, prevent the vacuum packaging bag from being damaged and the polymer foam concrete bonding layer from being incompatible, so that the protective layer 1 and the vacuum packaging aerogel board 2 are connected into one, and the two are more integrated.

[0045] The aerogel thermal insulation board in this embodiment 1 can be formed into a flat plate type, a circular tube type, or a square tube type aerogel thermal insulation board by replacing a mold of a desired shape according to the specific appearance shape, and the specifications are not limited.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An aerogel thermal insulation board, characterized by: The aerogel thermal insulation panel comprises a vacuum-encapsulated aerogel panel (2) and a protective layer (1), wherein the protective layer (1) is wrapped around the outer surface of the vacuum-encapsulated aerogel panel (2); The aerogel thermal insulation panel further comprises a thermal insulation connection fixture (3), the thermal insulation connection fixture (3) clamping the vacuum-encapsulated aerogel panel (2), and the vacuum-encapsulated aerogel panel (2) clamped by the thermal insulation connection fixture (3) is wrapped by the protective layer (1).

2. The aerogel thermal insulation board according to claim 1, characterized in that: The vacuum-encapsulated aerogel plate (2) is a heat-insulating plate formed by vacuum-compressing and encapsulating aerogel particle powder.

3. The aerogel thermal insulation board according to claim 1, characterized in that: The protective layer (1) is made of polymer foam concrete.

4. The aerogel thermal insulation board according to claim 1, characterized in that: The outer surface of the vacuum-encapsulated aerogel plate (2) is also coated with an interface agent (4), and the vacuum-encapsulated aerogel plate (2) coated with the interface agent (4) is wrapped by a protective layer (1).

5. The aerogel thermal insulation board according to claim 4, characterized in that: The interface agent (4) is made of a composite water-based polymer waterproof coating.

6. The aerogel thermal insulation board according to any one of claims 1 to 5, characterized in that: The thermal insulation connection fixture (3) comprises a base (31), a clamping portion is provided on the base (31), the clamping portion comprises a first clamping portion (351) and a second clamping portion (352), and a clamping opening (36) for clamping the vacuum-encapsulated aerogel plate (2) is formed between the first clamping portion (351) and the second clamping portion (352); A first connecting portion (321) for connecting to a first inverted hook gripper (331) and a second connecting portion (322) for connecting to a second inverted hook gripper (332) are further provided on the base (31) outside the clamping portion. A fixing opening (37) for fixing the vacuum-encapsulated aerogel plate (2) is formed between the first inverted hook gripper (331) and the second inverted hook gripper (332). The fixing opening (37) and the clamping opening (36) are positioned correspondingly.

7. The aerogel thermal insulation board according to claim 6, characterized in that: A third connecting portion (341) protruding outward is further provided between the first clamping portion (351) and the base (31), and a fourth connecting portion (342) protruding outward is further provided between the second clamping portion (352) and the base (31); The first inverted hook grip (331) and / or the second inverted hook grip (332) and / or the first connecting portion (321) and / or the second connecting portion (322) and / or the third connecting portion (341) and / or the fourth connecting portion (342) and / or the base (31) are provided with a through hole (30) or a groove, and the polymer foam concrete of the protective layer (1) is embedded in the through hole (30) or the groove.

8. The aerogel thermal insulation board according to claim 7, characterized in that: The third connecting portion (341) and the fourth connecting portion (342) are arc-shaped; The outer side surface of the heat-insulating connection fixing member (3) formed by the base (31), the first connecting portion (321), the second connecting portion (322), the first inverted hook grip (331) and the second inverted hook grip (332) is square, and the fixing opening (37) is opened on one of the four sides of the square; The heat-insulating connection fixing members (3) are fixed in pairs on both sides of the vacuum-encapsulated aerogel plate (2).

9. The aerogel thermal insulation board according to claim 8, characterized in that: The outer surface of the protective layer (1) is further provided with an alkali-resistant mesh cloth (5); The heat-insulating connection fixing piece (3) is made of plastic material.

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