Gum dipping and aging device and gum dipping and aging system for aerogel composite material

Abstract

The invention relates to an aerogel composite material impregnation aging device and an aerogel composite material impregnation aging system, and belongs to the technical field of aerogel preparation. The gum dipping and aging device comprises a gum dipping and aging outer cylinder and a gum dipping and aging mold arranged in the gum dipping and aging outer cylinder, and an aerogel base material to be soaked and aged is placed in the gum dipping and aging mold; a circle of supporting table is annularly arranged on the inner wall of the gum dipping and aging outer cylinder, and the gum dipping and aging mold is arranged on the supporting table; the gum dipping aging mold is divided into a first gum dipping area and a second gum dipping area, a plurality of parallel porous partition plates are vertically arranged in the first gum dipping area and the second gum dipping area, and the porous partition plates in the first gum dipping area are perpendicular to the porous partition plates in the second gum dipping area; the aerogel base material is arranged between the adjacent porous partition plates in the first impregnation area or the second impregnation area. Compared with the prior art, the method does not need to depend on meshes, obvious wrinkles on the surface of the base material can be effectively avoided, and the mold space can be utilized to the maximum degree so as to reduce space waste.

Description

Technical Field

[0001] The invention belongs to the technical field of aerogel preparation, and in particular relates to an aerogel composite material impregnation and aging device and an impregnation and aging system. Background Art

[0002] At present, in the preparation process of aerogel products, the function of the aerogel immersion aging equipment is to put the composite aerogel roll material that has been completed through the dip gel line into the soaking tank in the soaking aging area for further curing treatment, and continue to let the gel stand so that the unfinished polycondensation reaction continues, so that the aerogel nanoporous structure framework is more stable. The dip aging step generally requires the fiber felt to be immersed in the aerogel dip tank, and then rolled into a whole with a mesh of the same width and immersed in the aging tank for dip gel reaction. However, the above process often causes inevitable wrinkles on the fiber base under the stress of the rolled mesh. After supercritical drying, the wrinkles are solidified to form irreversible uneven textures, which will greatly affect the aesthetics of the aerogel composite material. The distribution of aerogel in the wrinkled part and the flat part is also uneven, resulting in a large deviation in the consistency of material properties.

[0003] CN115180224A discloses a method of realizing the dipping and gelling of fiber sheets by means of automatic dipping, conveying and collecting of fiber sheets. This method gets rid of the bulky preparation process of coiled materials, but the equipment is complicated, and the sheets still need to rely on the mesh to collect the sheets after dipping, and the drying process still needs to rely on the mesh to cycle the fiber sheets for multiple times to obtain a gel sheet group in which a multi-layer gel sheet fiber felt and mesh are stacked at intervals. CN219055413U discloses a dipping device for preparing aerogel insulation sheets, which uses a sample rack to dip the fiber sheets and can be hoisted and transferred, but the fiber barrel and the dipping rack are both cylindrical, while the general dipping aging tank is a cylindrical tank body, which will waste the space of the aging tank, and the output per unit time is lower than when the dipping rack is not used, which is not conducive to improving production efficiency.

[0004] Therefore, in view of the unresolved technical problems of the above-mentioned existing fiber sheet impregnation devices, a new type of aerogel composite material impregnation and aging device is still to be developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art that the dipping process depends on the mesh and wastes the space of the dipping and aging tank, and to provide an aerogel composite material dipping and aging device and a dipping and aging system to obtain an aerogel composite material with a high surface flatness.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An aerogel composite material impregnation and aging device comprises an impregnation and aging outer cylinder and an impregnation and aging mold arranged in the impregnation and aging outer cylinder, wherein an aerogel substrate to be impregnated and aged is placed in the impregnation and aging mold;

[0008] The inner wall of the outer cylinder for dipping and aging is surrounded by a circle of support platforms, and the dipping and aging mold is arranged on the support platforms;

[0009] The dipping and aging mold is divided into a first dipping area and a second dipping area, and a plurality of parallel porous partitions are vertically arranged in the first dipping area and the second dipping area, and the porous partitions in the first dipping area are arranged vertically with the porous partitions in the second dipping area;

[0010] The aerogel substrate is placed between adjacent porous partitions in the first dipping zone or the second dipping zone.

[0011] Furthermore, a sealing cover is provided on the top of the dipping and aging outer cylinder.

[0012] Furthermore, a soaking liquid inlet is provided on the side wall of the outer cylinder for soaking and aging, and a soaking liquid outlet is provided on the bottom of the outer cylinder for soaking and aging.

[0013] Furthermore, a plurality of first soaking liquid penetration holes are evenly arranged on the support platform, and a plurality of second soaking liquid penetration holes are evenly arranged on the bottom of the dipping and aging mold.

[0014] Furthermore, the dipping and aging mold is a cylindrical structure as a whole, wherein the cross-section of the first dipping zone is crescent-shaped, and the cross-section of the second dipping zone and the cross-section of the first dipping zone can be assembled into a complete circle.

[0015] Furthermore, a plurality of soaking liquid through holes are evenly formed on the porous partition plate.

[0016] Furthermore, the diameter of the soaking liquid through hole is 40-80 mm, and the net distance between adjacent soaking liquid through holes is 10-20 mm.

[0017] Furthermore, a dipping and aging jacket is provided between the inner wall of the dipping and aging outer cylinder and the dipping and aging mold, and hot water is passed between the outer wall of the dipping and aging mold and the dipping and aging jacket.

[0018] The present invention also provides a dipping and aging system including the aerogel composite material dipping and aging device, characterized in that it also includes a dipping liquid storage tank, a process storage tank and a recovery tank;

[0019] The soaking liquid storage tank is connected to the dipping and aging device through a pipeline, and is used to input the soaking liquid into the dipping and aging device;

[0020] The inlet of the process storage tank is connected to the outlet of the dipping and aging device, and the outlet of the process storage tank is connected to the dipping and aging device to form a circulating transmission pipeline for reusing the dipping liquid;

[0021] The inlet of the recovery tank is connected to the outlet of the dipping and aging device, and is used to recover the soaking liquid whose concentration does not meet the standard.

[0022] Furthermore, a centrifugal pump is provided at the outlet of the gum dipping and aging device, and the outlet of the centrifugal pump is connected to the gum dipping and aging device again through a pipeline to form a self-circulation of the soaking liquid.

[0023] Furthermore, the outlet of the gum dipping and aging device is connected to a sewage outlet through a pipeline, so as to discharge the soaking liquid waste containing large particles of fallen objects.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The dipping and aging device of the present invention limits the size and placement of the aerogel substrate by cleverly setting the porous partition, without relying on the mesh, and can effectively avoid obvious wrinkles on the surface of the substrate; and by setting two dipping areas in the dipping and aging mold, the operator can select the appropriate dipping area for placement according to the different sizes of the aerogel substrate, which greatly reduces the space waste of the dipping and aging mold.

[0026] (2) The present invention can achieve "de-meshing" during the soaking and aging process, thereby preventing the wet aerogel substrate after the dipped aerogel substrate from having obvious wrinkles on the substrate surface due to the stress of the mesh after being wrapped with the mesh, thereby solving the problem of uneven surface or even texture of the aerogel composite material, and finally obtaining an aerogel composite material with a high surface flatness.

[0027] (3) The dipping and aging mold of the present invention can maximize the use of the space in the mold by setting up two dipping zones and porous partitions in different directions, and can place more aerogel substrates at one time, which can greatly improve the production capacity.

[0028] (4) The impregnation and aging device of the present invention can effectively improve the aesthetics and material properties of the aerogel composite material. The aerogel material with a flat and smooth surface can better fit the coated surface and can effectively exert the thermal insulation properties and other functions of the aerogel material.

[0029] (5) The bottom of the dipping and aging mold, the porous partition and the support platform of the present invention are all provided with penetration holes for the circulation and penetration of the soaking liquid, so that the soaking liquid can fully soak the aerogel substrate, promote the unfinished polycondensation reaction to continue, and promote the framework of the aerogel nanoporous structure to be more stable.

[0030] (6) The bottom of the dipping and aging mold of the present invention does not directly contact the bottom of the inner wall of the dipping and aging outer cylinder, which can effectively avoid the influence of large particles falling off and discharged waste liquid on the aerogel substrate in the dipping and aging mold.

[0031] (7) The gum immersion and aging system of the present invention takes into account the effective recycling of the soaking liquid. Through the ingenious layout of the soaking liquid storage tank, the process storage tank and the recovery tank, the recycling of the soaking liquid in the gum immersion and aging device can be achieved, which is conducive to reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an external schematic diagram of the gum dipping and aging device of the present invention.

[0033] Figure 2 It is an internal schematic diagram of the gum dipping and aging device of the present invention.

[0034] Figure 3 This is a schematic structural diagram of the dipping and aging mold of Example 2 of the present invention.

[0035] Figure 4 This is a schematic diagram of the bottom of the dipping and aging mold of Example 2 of the present invention.

[0036] Figure 5 This is a top view of the gum dipping and aging device of Example 2 of the present invention.

[0037] Figure 6 It is a front cross-sectional view of the gum dipping and aging device of Example 2 of the present invention.

[0038] Figure 7 This is a cross-sectional view of the second dipping zone of Example 2 of the present invention.

[0039] Figure 8 This is a top view of the glue dipping and aging device of Example 3 of the present invention.

[0040] Fig. 9 The figure is a schematic diagram of the process of the gum dipping and aging system of Example 4 of the present invention.

[0041] Description of the markings in the figure:

[0042] 1-dipping and aging outer cylinder, 11-supporting platform, 111-first dipping liquid penetration hole, 12-sealing cover, 13-dipping liquid inlet, 14-dipping liquid outlet;

[0043] 2-dipping and aging mold, 21-first dipping area, 22-second dipping area, 23-porous partition, 231-soaking liquid through hole, 24-second soaking liquid penetration hole;

[0044] 3- aerogel substrate;

[0045] 4- Dipping and aging jacket;

[0046] 5- Soaking liquid storage tank;

[0047] 6-Process storage tank;

[0048] 7- Recovery tank,

[0049] 8-Sewage outlet. DETAILED DESCRIPTION

[0050] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0051] In the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] Embodiment 1:

[0054] An aerogel composite material impregnation and aging device, such as Figure 1-2As shown, it includes a dipping and aging outer cylinder 1 and a dipping and aging mold 2 arranged in the dipping and aging outer cylinder 1, and the aerogel substrate 3 to be dipped and aged is placed in the dipping and aging mold 2. The inner wall of the dipping and aging outer cylinder 1 is surrounded by a circle of support platforms 11, and the dipping and aging mold 2 is arranged on the support platforms 11. The dipping and aging mold 2 is divided into a first dipping zone 21 and a second dipping zone 22. A plurality of parallel porous partitions 23 are vertically arranged in the first dipping zone 21 and the second dipping zone 22, and the porous partitions 23 in the first dipping zone 21 and the porous partitions 23 in the second dipping zone 22 are arranged vertically. The aerogel substrate 3 is placed between adjacent porous partitions 23 in the first dipping zone 21 or the second dipping zone 22.

[0055] When in use, the aerogel substrate 3 to be aged is placed between the adjacent porous partitions 23 of the two dipping areas according to different sizes. Since the dipping and aging mold 2 has limited the size and placement of the aerogel substrate 3 through the clever setting of the porous partition 23, there is no need to use mesh sheets of the same width to roll them into one piece for dipping and aging, which can effectively avoid the wet aerogel substrate 3 after dipping from wrapping the mesh. Obvious wrinkles on the surface of the substrate due to the stress of the mesh. In addition, due to the vertical setting of the porous partitions 23 in the two dipping areas in the dipping and aging mold 2, the operator can select the appropriate dipping area according to the different sizes of the aerogel substrate 3, avoiding the waste of space in the dipping and aging mold 2.

[0056] Embodiment 2:

[0057] An aerogel composite material impregnation and aging device, such as Figure 3-7 As shown, it includes a dipping and aging outer cylinder 1 and a dipping and aging mold 2 arranged in the dipping and aging outer cylinder 1, and an aerogel substrate 3 to be dipped and aged is placed in the dipping and aging mold 2.

[0058] The top of the dipping and aging outer cylinder 1 of this embodiment is provided with a sealing cover 12. After the dipping and aging mold 2 is placed in the dipping and aging outer cylinder 1, the sealing cover 12 can be closed for aging to effectively ensure the temperature of the dipping and prevent the dipping liquid from volatilizing. The side wall of the dipping and aging outer cylinder 1 is provided with a dipping liquid inlet 13, and the bottom of the dipping and aging outer cylinder 1 is provided with a dipping liquid outlet 14. The dipping liquid inlet 13 and the dipping liquid outlet 14 are both provided with corresponding valves to control the inlet and outlet of the dipping liquid.

[0059] The inner wall of the outer cylinder 1 for impregnation and aging of the present embodiment is provided with a circle of support platforms 11, and the impregnation and aging mold 2 is provided on the support platforms 11. A plurality of first impregnation liquid penetration holes 111 are evenly provided on the support platforms 11, and a plurality of second impregnation liquid penetration holes 24 are evenly provided on the bottom of the impregnation and aging mold 2. The first impregnation liquid penetration holes 111 and the second impregnation liquid penetration holes 24 can be provided to fully penetrate the entire impregnation and aging mold 2. In addition, the bottom of the impregnation and aging mold 2 is not in direct contact with the bottom of the inner wall of the outer cylinder 1 for impregnation and aging, which can effectively avoid the influence of large particles of falling objects and discharged waste liquid on the aerogel substrate 3 in the impregnation and aging mold 2.

[0060] The dipping and aging mold 2 of the present embodiment is a cylindrical structure as a whole, which is specifically divided into a first dipping zone 21 and a second dipping zone 22. The cross-section of the first dipping zone 21 of the present embodiment is crescent-shaped, and the cross-section of the second dipping zone 22 can be assembled into a complete circle with the cross-section of the first dipping zone 21. A number of parallel porous partitions 23 are vertically arranged in the first dipping zone 21 and the second dipping zone 22, and a plurality of soaking liquid through holes 231 are evenly opened on the porous partition 23. The aperture of the soaking liquid through hole 231 is about 60mm, and the net distance between adjacent soaking liquid through holes 231 is about 15mm. The penetration of the soaking liquid into the aerogel substrate 3 can be increased by setting the soaking liquid through hole 231. The porous partition 23 in the first dipping zone 21 is arranged vertically with the porous partition 23 in the second dipping zone 22. The aerogel substrate 3 is placed between adjacent porous partitions 23 in the first dipping zone 21 or the second dipping zone 22.

[0061] The aerogel substrate 3 of the present embodiment is an aerogel fiber felt composite material that is composited by a dipped gel line, and anhydrous ethanol is selected as the soaking liquid. When further dipping and aging are required, aerogel substrates 3 of different sizes are first placed in the first dipping area 21 and the second dipping area 22, the valve at the dipping liquid outlet 14 is closed, and the soaking liquid is started to be injected. After the soaking liquid fills the entire dipping and aging mold 2, the injection is stopped, the sealing cover 12 is closed, and the soaking and aging are carried out. After the aging is completed, the dipping and aging mold 2 is taken out, the valve at the dipping liquid outlet 14 is opened, and the soaking liquid is discharged. After cleaning, the next wave of aerogel substrates 3 can be immersed and aged.

[0062] Embodiment 3:

[0063] An aerogel composite material impregnation and aging device comprises an impregnation and aging outer cylinder 1 and an impregnation and aging mold 2 arranged in the impregnation and aging outer cylinder 1, and an aerogel substrate 3 to be impregnated and aged is placed in the impregnation and aging mold 2.

[0064] The difference from Example 2 is that Figure 8As shown, a dipping and aging jacket 4 is also provided between the inner wall of the dipping and aging outer cylinder 1 and the dipping and aging mold 2 of this embodiment, and hot water is passed between the outer wall of the dipping and aging mold 2 and the dipping and aging jacket 4 to increase the reaction speed of the aerogel structure. Since neither the outer wall of the dipping and aging mold 2 nor the dipping and aging jacket 4 has holes, and the installation position of the dipping and aging jacket 4 avoids the first soaking liquid penetration hole 111 on the support platform 11, it is ensured that hot water will not leak between the dipping and aging mold 2 and the dipping and aging jacket 4. After the aging is completed and the dipping and aging mold 2 is taken out, the hot water can be discharged together with the soaking liquid.

[0065] In the actual production process, hot water can be directly added between the dipping and aging mold 2 and the dipping and aging jacket 4, or a corresponding hot water inlet and hot water pipeline can be set on the dipping and aging outer cylinder 1 to achieve effective addition of hot water.

[0066] Embodiment 4:

[0067] This embodiment provides a dipping and aging system, such as Fig. 9 As shown, the dipping and aging system of this embodiment includes not only the aerogel composite material dipping and aging device described in Example 1, but also includes a dipping liquid storage tank 5, a process storage tank 6 and a recovery tank 7. The various devices of this embodiment are connected by conventional pipelines, and the liquid is transported by a centrifugal pump commonly used in the chemical industry. Adjusting valves are set at the inlet and outlet of the corresponding device, and the concentration of the dipping liquid is monitored by a liquid concentration monitor (such as an ethanol detector). The above settings are all conventional settings in the chemical industry and will not be repeated in the following text.

[0068] Specifically, the soaking liquid storage tank 5 is connected to the dipping and aging device through a pipeline, and is used to input the soaking liquid into the dipping and aging device. The inlet of the process storage tank 6 is connected to the outlet of the dipping and aging device, and the outlet of the process storage tank 6 is connected to the dipping and aging device to form a circulating conveying pipeline, and the soaking liquid with a concentration that meets the standard can be reused. The inlet of the recovery tank 7 is connected to the outlet of the dipping and aging device, and is used to recover the soaking liquid with a concentration that does not meet the standard (for example, ethanol concentration <95%). In addition, a centrifugal pump is provided at the outlet of the dipping and aging device, and the outlet of the centrifugal pump is connected to the dipping and aging device again through a pipeline, which can form a self-circulating utilization of the soaking liquid. Since the long-term soaking of the aerogel substrate 3 may cause part of the colloid precipitation to fall off, when the soaking liquid is no longer suitable for soaking the aerogel substrate 3, it can be connected to the sewage outlet 8 through a pipeline to discharge the soaking liquid waste containing large particles of falling objects.

[0069] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. An aerogel composite material impregnation and aging device, characterized in that: It comprises a resin dipping and aging outer cylinder (1) and a resin dipping and aging mold (2) arranged in the resin dipping and aging outer cylinder (1), and an aerogel substrate (3) to be dipped and aged is placed in the resin dipping and aging mold (2); The inner wall of the dipping and aging outer cylinder (1) is provided with a circle of support platforms (11), and the dipping and aging mold (2) is arranged on the support platforms (11); the dipping and aging mold (2) is divided into a first dipping area (21) and a second dipping area (22), and a plurality of parallel porous partitions (23) are vertically arranged in the first dipping area (21) and the second dipping area (22), and the porous partitions (23) in the first dipping area (21) and the porous partitions (23) in the second dipping area (22) are arranged vertically; The aerogel substrate (3) is placed between adjacent porous partitions (23) in the first impregnation zone (21) or the second impregnation zone (22).

2. The aerogel composite material impregnation and aging device according to claim 1, characterized in that: A sealing cover (12) is provided on the top of the outer cylinder (1) for soaking and aging the resin.

3. The aerogel composite material impregnation and aging device according to claim 1, characterized in that: The side wall of the outer cylinder for soaking and aging (1) is provided with a soaking liquid inlet (13), and the bottom of the outer cylinder for soaking and aging (1) is provided with a soaking liquid outlet (14).

4. The aerogel composite material impregnation and aging device according to claim 1, characterized in that: The support platform (11) is evenly provided with a plurality of first soaking liquid penetration holes (111) in a circular pattern, and the bottom of the dipping and aging mold (2) is evenly provided with a plurality of second soaking liquid penetration holes (24).

5. The aerogel composite material impregnation and aging device according to claim 1, characterized in that: The dipping and aging mold (2) is a cylindrical structure as a whole, wherein the cross section of the first dipping area (21) is crescent-shaped, and the cross section of the second dipping area (22) and the cross section of the first dipping area (21) can be assembled into a complete circle.

6. The aerogel composite material impregnation and aging device according to claim 1, characterized in that: The porous partition plate (23) is evenly provided with a plurality of soaking liquid through holes (231); The aperture of the soaking liquid through hole (231) is 40-80 mm, and the net distance between adjacent soaking liquid through holes (231) is 10-20 mm.

7. The aerogel composite material impregnation and aging device according to claim 1, characterized in that: A glue aging jacket (4) is also provided between the inner wall of the glue aging outer cylinder (1) and the glue aging mold (2), and hot water is passed between the outer wall of the glue aging mold (2) and the glue aging jacket (4).

8. A glue impregnation and aging system comprising the aerogel composite material glue impregnation and aging device according to any one of claims 1 to 7, characterized in that: It also includes a soaking liquid storage tank (5), a process storage tank (6) and a recovery tank (7); The soaking liquid storage tank (5) is connected to the dipping and aging device via a pipeline, and is used to input the soaking liquid into the dipping and aging device; The inlet of the process storage tank (6) is connected to the outlet of the dipping and aging device, and the outlet of the process storage tank (6) is connected to the dipping and aging device to form a circulation pipeline for reusing the dipping liquid; The inlet of the recovery tank (7) is connected to the outlet of the dipping and aging device and is used to recover the soaking liquid whose concentration does not meet the standard.

9. The aerogel composite material impregnation and aging device according to claim 8, characterized in that: A centrifugal pump is arranged at the outlet of the gum dipping and aging device, and the outlet of the centrifugal pump is connected to the gum dipping and aging device again through a pipeline to form a self-circulation of the dipping liquid.

10. The aerogel composite material impregnation and aging device according to claim 8, characterized in that: The outlet of the dipping and aging device is connected to a sewage outlet (8) through a pipeline, and is used to discharge the soaking liquid waste containing large particles of fallen objects.

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