Aerogel composite material vacuum impregnation device and method

Abstract

The invention relates to a vacuum impregnation device and method for an aerogel composite material. The vacuum impregnation device for the aerogel composite material comprises a flexible bag body, a negative pressure device, a liquid injection device and a liquid outlet device, a first channel opening and a second channel opening are formed in the outer side of the flexible bag body; the flexible bag body comprises an opening, and the opening is provided with a locking mechanism; the first channel opening is connected with the negative pressure device through a first pipeline; the liquid injection device and the liquid outlet device are connected with the second channel opening through a second pipeline; in the large-scale preparation process of the aerogel composite material, the waste amount of the sol solution and the aging solution is reduced, and the sol solution in the matrix material is uniformly impregnated.

Description

Technical Field

[0001] The present invention relates to the technical field of aerogel composite materials, and in particular to the technical field of a vacuum impregnation device and method for aerogel composite materials. Background Art

[0002] Aerogel composite materials have the high thermal insulation performance of gel materials while improving their strength. They are widely used in military fields such as national defense, military industry, security and anti-terrorism, as well as civilian fields such as green buildings, heat transmission, public transportation, and financial equipment protection.

[0003] The conventional industrial production method of aerogel composite materials is to add the matrix material and the sol solution into a large stainless steel tank for impregnation, and then transfer the impregnated matrix material to a large stainless steel tank storing an aging solution for aging. The conventional industrial impregnation aging method has the problem of more than 40% of the raw material solution being wasted, and the degree of impregnation of the matrix material by the sol solution is low and the degree of sol gelation is insufficient.

[0004] Therefore, how to reduce the waste of sol solution and aging solution during the large-scale preparation of aerogel composite materials and ensure uniform impregnation of the sol solution in the matrix material has become a difficult problem that needs to be solved urgently in this field. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide an aerogel composite vacuum impregnation device and method, so as to reduce the waste of sol solution and aging solution in the large-scale preparation process of aerogel composite materials, and uniformly impregnate the sol solution in the matrix material.

[0006] The present invention provides an aerogel composite material vacuum impregnation device, comprising a flexible bag body, a negative pressure device, a liquid injection device, and a liquid discharge device;

[0007] The flexible bag body is provided with a first passage opening and a second passage opening on the outside;

[0008] The flexible bag body comprises an opening, and the opening is provided with a locking mechanism;

[0009] The first channel opening is connected to the negative pressure device via a first pipeline;

[0010] The liquid injection device and the liquid discharge device are both connected to the second channel opening through a second pipeline.

[0011] Compared with the prior art, the present invention has the following beneficial effects: a first channel opening and a second channel opening are provided on the outer side of the flexible bag body, and the first channel opening is connected to the negative pressure device through a first pipeline, so that the gas in the flexible bag body is extracted to be in a negative pressure state and the shape of the flexible bag body is consistent with the shape of the base material, and the base material in the flexible bag body is in a negative pressure state, so that after the sol solution enters the inside of the flexible material, the shape of the flexible bag body is consistent with the shape of the outside of the base material, so that the amount of sol solution around the base material is basically consistent, avoiding a large amount of sol solution waste, and at the same time achieving the sol solution uniformly entering the inside of the base material under a negative pressure environment;

[0012] By connecting the liquid injection device and the liquid discharge device to the second channel port through the second pipe, the sol solution and the aging solution can enter the same flexible bag body in the order required by the process, and the problem of mixing the sol solution and the aging solution in the flexible bag body will not occur, resulting in a problem of reduced gel aging effect inside the matrix material.

[0013] Furthermore, the negative pressure device includes a gas delivery pipeline and a vacuum pump. The vacuum pump is connected to the first channel through the gas delivery pipeline. The first channel first channel opening is connected to the first channel opening. The first channel first channel opening is provided with a first switch valve.

[0014] The beneficial effect of adopting the above step is that the interior of the flexible bag can be evacuated to place the interior of the flexible bag in a negative pressure state.

[0015] Further, the liquid injection device includes a first liquid inlet delivery pipeline, a second liquid inlet delivery pipeline, a first liquid storage device, and a second liquid storage device;

[0016] The first liquid storage device is connected to the first liquid inlet delivery pipeline directly or through a first liquid inlet pump;

[0017] The second liquid storage device is directly connected to the second liquid inlet delivery pipeline via a second liquid inlet pump;

[0018] The first liquid inlet delivery pipeline and the second liquid inlet delivery pipeline are both connected to the second channel.

[0019] and / or

[0020] The liquid outlet device comprises a liquid outlet delivery pipeline and a liquid outlet pump;

[0021] The liquid outlet pump is connected to the second channel through a liquid outlet delivery pipeline.

[0022] The beneficial effect of adopting the above step is that the sol solution and the aging solution enter the same flexible bag body in the order required by the process.

[0023] Furthermore, the first liquid inlet delivery pipeline and the second liquid inlet delivery pipeline are connected to the second channel through a first three-way valve;

[0024] A second three-way valve is provided on the second channel between the second channel port and the first three-way valve;

[0025] The opening of the second three-way valve away from the second channel is connected to the liquid outlet pipeline;

[0026] and / or

[0027] The second channel is provided with a flow meter, or the first liquid inlet pump and the second liquid inlet pump are metering pumps.

[0028] The beneficial effect of the above step is that the first liquid inlet delivery pipeline and the second liquid inlet delivery pipeline are connected to the second channel through the first three-way valve, so as to add the sol solution or the aging solution to the flexible bag body or stop adding the solution to the flexible bag body according to the preset process flow;

[0029] A second three-way valve is provided on the second channel between the second channel opening and the first three-way valve. The second three-way valve is connected to the liquid outlet pipe away from the opening of the second channel, so as to discharge the excess liquid in the flexible bag body or close the channel between the second channel and the liquid outlet pipe and at the same time realize that the second channel can be connected to the first three-way valve.

[0030] Furthermore, the inner wall of the flexible bag body is provided with a concave or convex pattern, the pattern is circular or polygonal, and the depth of the concave pattern or the thickness of the convex pattern is 0.1mm-0.5mm.

[0031] The beneficial effect of adopting the previous step is that it is conducive to the sol solution or the aged solution flowing along the bag wall through the concave or convex pattern inside the flexible bag body, and the sol solution or the aged solution enters the special-shaped composite material from all directions, thereby facilitating the full impregnation of the matrix material under negative pressure and the uniform impregnation inside the matrix material.

[0032] Furthermore, a plurality of hanging holes are provided on the top of the flexible bag body.

[0033] The beneficial effect of adopting the previous step is that the flexible bag body can be fixed during use through the hanging hole.

[0034] Furthermore, the aerogel composite vacuum impregnation device is characterized in that it also includes an adjustable mold shell;

[0035] The adjustable mold shell includes a first mold shell and a second mold shell, wherein the first mold shell and the second mold shell are arranged opposite to each other and connected, and an accommodating space is formed between the first mold shell and the second mold shell;

[0036] The first mold shell includes a first bracket and a plurality of first sleeves connected to the first bracket;

[0037] A first sliding rod is sleeved in each of the first sleeves, and the length of the first sliding rod is greater than the length of the first sleeve;

[0038] The second mold shell includes a second bracket and a plurality of second sleeves connected to the second bracket;

[0039] A second sliding rod is sleeved in each of the second sleeves, and the length of the second sliding rod is greater than the length of the second sleeve;

[0040] The two ends of the first bracket and the two ends of the second bracket are detachably connected through a first connecting member and a second connecting member;

[0041] The first connecting member and the second connecting member are respectively provided with a first through hole and a second through hole.

[0042] The beneficial effect of the above step is that, by relatively arranging and connecting the first mold shell and the second mold shell, a containing space is formed between the first mold shell and the second mold shell, so that the flexible bag body is arranged in the containing space;

[0043] By sleeved a first slide bar in each of the first sleeves, the length of the first slide bar is greater than the length of the first sleeve; and sleeved a second slide bar in each of the second sleeves, the length of the second slide bar is greater than the length of the second sleeve, it can be achieved that when the flexible bag body, the first mold shell and the second mold shell are extruded, the first slide bar slides along the first sleeve and the second slide bar slides along the second sleeve, so that the accommodating space between the first mold shell and the second mold shell is basically consistent with the shape of the base material;

[0044] The first connecting member and the second connecting member are respectively provided with a first through hole and a second through hole, so that the first channel passes through the first through hole and is respectively connected to the first channel opening and the gas delivery pipeline, and the second channel passes through the second through hole and is respectively connected to the second channel opening and the second three-way valve.

[0045] Furthermore, the first connecting member includes a first sliding plate and a first supporting member provided with a first sliding groove, and the first sliding plate is slidably connected to the first sliding groove;

[0046] A first sliding hole is provided at the bottom of the first sliding groove, and a second sliding hole is provided at the first sliding sheet. The first sliding sheet and the first sliding groove are detachably connected by a first screw passing through the first sliding hole, the second sliding hole and connecting with the first nut;

[0047] The surface of the first chute is provided with a scale;

[0048] and / or

[0049] The second connecting member includes a second sliding plate and a second supporting member provided with a second sliding groove, and the second sliding plate is slidably connected to the second sliding groove;

[0050] A third sliding hole is provided at the bottom of the second sliding groove, and a fourth sliding hole is provided at the second sliding sheet. The second sliding sheet and the second sliding groove are detachably connected by the second screw passing through the third sliding hole and the fourth sliding hole and connecting with the second nut;

[0051] A scale is provided on the surface of the second chute.

[0052] The beneficial effect of adopting the above step is that, by virtue of the first connecting member including the first slide plate and the first supporting member provided with the first slide groove, the first slide plate is slidably connected with the first slide groove, and the surface of the first slide groove is provided with a ruler; the size of the accommodation space between the first mold shell and the second mold shell can be set as required, and the shape of the accommodation space is kept proportional to the external shape of the base material;

[0053] In this way, the vacuumed flexible bag can be placed in a accommodating space having a proportion consistent with the outer shape of the matrix material, which helps ensure that when the sol solution is added to the flexible bag, the outer dimensions of the flexible bag are consistent with the outer shape of the matrix material, further helping to avoid waste of the sol solution and the aging solution.

[0054] Another aspect of the present invention provides an aerogel composite material vacuum impregnation method, wherein the base material is impregnated and aged by the aerogel composite material vacuum impregnation device;

[0055] The specific steps include:

[0056] Connect the first channel opening on the outside of the flexible bag body to the first pipeline, and connect the second channel opening to the second pipeline;

[0057] Open the opening of the flexible bag body, put the base material to be impregnated into the opening of the flexible bag body and lock it;

[0058] The opening connecting the first three-way valve and the second channel hole is closed, and the opening connecting the second three-way valve and the liquid outlet pipe is closed;

[0059] Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the surface of the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the pressure in the flexible bag body reaches a preset negative pressure value;

[0060] The opening connecting the second three-way valve to the liquid outlet pipe is closed, the opening connecting the first three-way valve to the second channel and the first liquid inlet pipe is opened, and the opening connecting the first three-way valve to the second liquid inlet pipe is closed;

[0061] The first liquid storage device stores a sol solution, and the sol solution in the first liquid storage device is quantitatively pumped into the flexible bag body by the first liquid inlet pump and / or the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed;

[0062] After the sol solution in the flexible bag body is impregnated into the matrix material and gelled inside the matrix material; the port connecting the second three-way valve and the first three-way valve is closed, the port connecting the second three-way valve and the liquid outlet pipe is opened, the excess sol solution in the flexible bag body is pumped out by the liquid outlet pump, and then the port connecting the second three-way valve and the liquid outlet pipe is closed;

[0063] Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the negative pressure in the flexible bag body reaches a preset negative pressure value;

[0064] The opening connecting the first three-way valve and the first liquid inlet delivery pipeline is closed; the opening connecting the first three-way valve and the second liquid inlet delivery pipeline and the second channel is opened;

[0065] The second liquid storage device stores an aging solution, and the aging solution of the second liquid storage device is quantitatively pumped into the flexible bag body through the second liquid inlet pump and / or the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed; the matrix material after being impregnated is aged by the aging solution, and after the aging is completed, the port connecting the second three-way valve and the first three-way valve is closed, the port connecting the second three-way valve and the liquid outlet pipe is opened, the excess aging solution in the flexible bag body is extracted by the liquid outlet pump, and then the port connecting the second three-way valve and the liquid outlet pipe is closed, so as to realize the impregnation, sol and aging of the matrix material of the aerogel composite material.

[0066] Compared with the prior art, the present invention has the following beneficial effects: the gas in the flexible bag body is extracted through the first channel opening and the first pipe to be in a negative pressure state, and the shape of the flexible bag body is consistent with the shape of the base material, and the base material in the flexible bag body is in a negative pressure state, so that after the sol solution enters the flexible material, the shape of the flexible bag body and the outer shape of the base material are consistent in proportion, so that the amount of sol solution around the base material is basically consistent, avoiding a large amount of sol solution waste, and at the same time achieving the sol solution uniformly entering the base material under a negative pressure environment;

[0067] The sol solution is added into the flexible bag body to impregnate the base material in a negative pressure state by opening the first three-way valve, the second channel and the first liquid inlet delivery pipeline connection port;

[0068] The outlet of the liquid outlet pipe of the second three-way valve is opened, and the outlet connecting the second three-way valve and the first three-way valve is closed, so that the excess liquid in the flexible bag body can be extracted;

[0069] Thus, the sol solution and the aging solution are added into a flexible bag in the order of the process requirements, and the excess solution in the flexible bag is discharged before the aging solution is added;

[0070] After the flexible bag is pumped with negative pressure, the sol solution sucked in by the negative pressure enters the base material evenly and is evenly distributed, and a large amount of excess sol solution is prevented from entering the flexible bag, which significantly reduces the large-scale production cost.

[0071] Further, the first switch valve and the vacuum pump are opened, and the flexible bag body is evacuated through the first channel and the first channel opening, and the first switch valve and the vacuum pump are closed after the surface of the flexible bag body and the surface of the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the preset negative pressure value is reached in the flexible bag body;

[0072] Then, the flexible bag body is placed between the first mold shell and the second mold shell, and the first pipe and the second pipe are passed through the first through hole and the second through hole respectively;

[0073] Connecting the first mold shell to the second mold shell through a first connecting member and a second connecting member;

[0074] The first slide bar of the first mold shell sleeved in the first sleeve tubes moves along the first sleeve tubes away from the flexible bag body; the second slide bar of the second mold shell sleeved in the second sleeve tubes moves along the second sleeve tubes away from the flexible bag body; thereby forming a containing space consistent with the shape of the matrix material to be impregnated between the first mold shell and the second mold shell;

[0075] By means of a ruler provided on the surface of the first slide groove or the second slide groove, the flexible bag body is moved to the left or forward by a preset distance in the horizontal direction, and then moved to the right or backward by a preset distance in the horizontal direction, so as to form an accommodating space in a certain proportion to the outer dimensions of the matrix material to be impregnated between the first mold shell and the second mold shell;

[0076] Then, the sol solution is introduced into the flexible bag body in sequence, the bag is immersed, excess sol solvent is removed, an aging solution is introduced, the bag is aged, and excess aging solution is removed.

[0077] The beneficial effect of adopting the previous step is that the flexible bag body that has been evacuated is placed in a containing space that is in proportion to the outer shape of the matrix material, which further helps to ensure that the outer dimensions of the flexible bag body are in proportion to the outer shape of the matrix material when the sol solution is added to the flexible bag body, and further helps to avoid waste of the sol solution and the aging solution. DETAILED DESCRIPTION

[0078] In order to better understand the technical solution of the present invention, the present invention is further described below in conjunction with specific embodiments.

[0079] Embodiment 1

[0080] One aspect of the present embodiment provides an aerogel composite vacuum impregnation device, including a flexible bag body, a negative pressure device, a liquid injection device, and a liquid discharge device;

[0081] The flexible bag body is provided with a first channel opening and a second channel opening on the outside; the flexible bag body is provided with a raised pattern on the inner wall, the pattern is polygonal, and the thickness of the raised pattern is 0.3 mm; and the top of the flexible bag body is provided with a plurality of hanging holes.

[0082] The flexible bag body comprises an opening, and the opening is provided with a locking mechanism;

[0083] The first channel opening is connected to the negative pressure device via a first pipeline;

[0084] The liquid injection device and the liquid discharge device are both connected to the second channel opening through a second pipeline.

[0085] The negative pressure device includes a gas delivery pipeline and a vacuum pump. The vacuum pump is connected to the first channel through the gas delivery pipeline. The first channel is connected to the first channel port. The first channel is provided with a first switch valve.

[0086] The liquid injection device comprises a first liquid inlet delivery pipeline, a second liquid inlet delivery pipeline, a first liquid storage device, and a second liquid storage device;

[0087] The first liquid storage device is directly connected to the first liquid inlet delivery pipeline;

[0088] The second liquid storage device is directly connected to the second liquid inlet delivery pipeline;

[0089] The first liquid inlet delivery pipeline and the second liquid inlet delivery pipeline are both connected to the second channel.

[0090] The liquid outlet device comprises a liquid outlet delivery pipeline and a liquid outlet pump; the liquid outlet pump is connected to the second channel through the liquid outlet delivery pipeline.

[0091] The first liquid inlet delivery pipeline and the second liquid inlet delivery pipeline are connected to the second channel through a first three-way valve; a second three-way valve is provided on the second channel between the second channel opening and the first three-way valve; the second three-way valve is connected to the liquid outlet pipeline away from the opening of the second channel.

[0092] Another aspect of this embodiment provides a vacuum impregnation method for an aerogel composite material, wherein the base material is impregnated and aged by the vacuum impregnation device for the aerogel composite material;

[0093] The specific steps include:

[0094] Connect the first channel opening on the outside of the flexible bag body to the first pipeline, and connect the second channel opening to the second pipeline;

[0095] Open the opening of the flexible bag body, put the base material to be impregnated into the opening of the flexible bag body and lock it;

[0096] The opening connecting the first three-way valve and the second channel hole is closed, and the opening connecting the second three-way valve and the liquid outlet pipe is closed;

[0097] Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the surface of the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the pressure in the flexible bag body reaches a preset negative pressure value;

[0098] The opening connecting the second three-way valve to the liquid outlet pipe is closed, the opening connecting the first three-way valve to the second channel and the first liquid inlet pipe is opened, and the opening connecting the first three-way valve to the second liquid inlet pipe is closed;

[0099] The first liquid storage device stores a sol solution, and the sol solution in the first liquid storage device is quantitatively injected into the flexible bag body through the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed;

[0100] After the sol solution in the flexible bag body is impregnated into the matrix material and gelled inside the matrix material; the port connecting the second three-way valve and the first three-way valve is closed, the port connecting the second three-way valve and the liquid outlet pipe is opened, the excess sol solution in the flexible bag body is pumped out by the liquid outlet pump, and then the port connecting the second three-way valve and the liquid outlet pipe is closed;

[0101] Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the negative pressure in the flexible bag body reaches a preset negative pressure value;

[0102] The opening connecting the first three-way valve and the first liquid inlet delivery pipeline is closed; the opening connecting the first three-way valve and the second liquid inlet delivery pipeline and the second channel is opened;

[0103] The second liquid storage device stores an aging solution, and the aging solution of the second liquid storage device is quantitatively injected into the flexible bag body through the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed; the impregnated matrix material is aged by the aging solution, and after the aging is completed, the port connecting the second three-way valve and the first three-way valve is closed, the port connecting the second three-way valve and the liquid outlet pipe is opened, and the excess aging solution in the flexible bag body is pumped out by the liquid outlet pump, and then the port connecting the second three-way valve and the liquid outlet pipe is closed, so as to realize the impregnation, sol and aging of the matrix material of the aerogel composite material.

[0104] Embodiment 2

[0105] The features of this embodiment that are the same as those of the first embodiment are not described in detail. The features of this embodiment that are different from those of the first embodiment are as follows: This embodiment provides an aerogel composite vacuum impregnation device, further comprising an adjustable mold shell;

[0106] The adjustable mold shell includes a first mold shell and a second mold shell, wherein the first mold shell and the second mold shell are arranged opposite to each other and connected, and an accommodating space is formed between the first mold shell and the second mold shell;

[0107] The first mold shell includes a first bracket and a plurality of first sleeves connected to the first bracket;

[0108] A first slide bar is sleeved in each of the first sleeves, and the length of the first slide bar is greater than the length of the first sleeve; the second mold shell includes a second bracket and a plurality of second sleeves connected to the second bracket;

[0109] A second slide bar is sleeved in each second sleeve, and the length of the second slide bar is greater than the length of the second sleeve; two ends of the first bracket and two ends of the second bracket are detachably connected through a first connecting member and a second connecting member;

[0110] The first connecting member and the second connecting member are respectively provided with a first through hole and a second through hole;

[0111] The first connecting member includes a first sliding plate and a first supporting member provided with a first sliding groove, and the first sliding plate is slidably connected to the first sliding groove;

[0112] A first sliding hole is provided at the bottom of the first sliding groove, and a second sliding hole is provided at the first sliding sheet. The first sliding sheet and the first sliding groove are detachably connected by a first screw passing through the first sliding hole, the second sliding hole and the first nut; a scale is provided on the surface of the first sliding groove;

[0113] The second connecting member includes a second sliding plate and a second supporting member provided with a second sliding groove, and the second sliding plate is slidably connected to the second sliding groove;

[0114] A third sliding hole is provided at the bottom of the second sliding groove, and a fourth sliding hole is provided at the second sliding sheet. The second sliding sheet and the second sliding groove are detachably connected by the second screw passing through the third sliding hole and the fourth sliding hole and connecting with the second nut;

[0115] The inner wall of the flexible bag body is provided with a concave pattern, the pattern is circular, and the thickness of the concave pattern is 0.4 mm;

[0116] The first liquid storage device is connected to the first liquid inlet delivery pipeline via a first liquid inlet pump;

[0117] The second liquid storage device is connected to the second liquid inlet delivery pipeline via a second liquid inlet pump;

[0118] The first liquid inlet pump and the second liquid inlet pump are peristaltic metering pumps.

[0119] Another aspect of this embodiment provides a vacuum impregnation method for an aerogel composite material, further comprising the following steps:

[0120] Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the surface of the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the preset negative pressure value is reached in the flexible bag body;

[0121] Then, the flexible bag body is placed between the first mold shell and the second mold shell, and the first pipe and the second pipe are passed through the first through hole and the second through hole respectively;

[0122] Connecting the first mold shell to the second mold shell through a first connecting member and a second connecting member;

[0123] The first slide bar of the first mold shell sleeved in the first sleeve tubes moves along the first sleeve tubes away from the flexible bag body; the second slide bar of the second mold shell sleeved in the second sleeve tubes moves along the second sleeve tubes away from the flexible bag body; thereby forming a containing space consistent with the shape of the matrix material to be impregnated between the first mold shell and the second mold shell;

[0124] By means of a ruler provided on the surface of the first slide groove or the second slide groove, the flexible bag body is moved to the left or forward by a preset distance in the horizontal direction, and then moved to the right or backward by a preset distance in the horizontal direction, so as to form an accommodating space in a certain proportion to the outer dimensions of the matrix material to be impregnated between the first mold shell and the second mold shell;

[0125] Then, the sol solution is introduced into the flexible bag body in sequence, the bag is immersed, excess sol solvent is removed, an aging solution is introduced, the bag is aged, and excess aging solution is removed;

[0126] The first liquid storage device stores a sol solution, and the sol solution in the first liquid storage device is quantitatively pumped into the flexible bag body through the first liquid inlet pump and the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed, and the first liquid inlet pump is turned off;

[0127] The second liquid storage device stores an aging solution, and the aging solution in the second liquid storage device is quantitatively pumped into the flexible bag body through the second liquid inlet pump and the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed, and the second liquid inlet pump is turned off.

[0128] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An aerogel composite material vacuum impregnation device, characterized in that: It includes a flexible bag body, a negative pressure device, a liquid injection device, and a liquid discharge device; The flexible bag body is provided with a first passage opening and a second passage opening on the outside; The flexible bag body comprises an opening, and the opening is provided with a locking mechanism; The first channel opening is connected to the negative pressure device via a first pipeline; The liquid injection device and the liquid discharge device are both connected to the second channel opening through a second pipeline.

2. The aerogel composite material vacuum impregnation device according to claim 1, characterized in that: The negative pressure device comprises a gas delivery pipeline and a vacuum pump, wherein the vacuum pump is connected to the first channel through the gas delivery pipeline, and the first channel is connected to the first channel opening; The first channel is provided with a first switch valve.

3. The aerogel composite material vacuum impregnation device according to claim 1, characterized in that: The liquid injection device comprises a first liquid inlet delivery pipeline, a second liquid inlet delivery pipeline, a first liquid storage device, and a second liquid storage device; The first liquid storage device is connected to the first liquid inlet delivery pipeline directly or through a first liquid inlet pump; The second liquid storage device is directly connected to the second liquid inlet delivery pipeline via a second liquid inlet pump; The first liquid inlet delivery pipeline and the second liquid inlet delivery pipeline are both connected to the second channel. and / or The liquid outlet device comprises a liquid outlet delivery pipeline and a liquid outlet pump; The liquid outlet pump is connected to the second channel through a liquid outlet delivery pipeline.

4. The aerogel composite material vacuum impregnation device according to claim 3, characterized in that: The first liquid inlet delivery pipeline and the second liquid inlet delivery pipeline are connected to the second channel through a first three-way valve; A second three-way valve is provided on the second channel between the second channel port and the first three-way valve; The opening of the second three-way valve away from the second channel is connected to the liquid outlet pipeline; and / or The second channel is provided with a flow meter, or the first liquid inlet pump and the second liquid inlet pump are metering pumps.

5. The aerogel composite material vacuum impregnation device according to claim 1, characterized in that: The inner wall of the flexible bag body is provided with a concave or convex pattern, the pattern is circular or polygonal, and the depth of the concave pattern or the thickness of the convex pattern is 0.1mm-0.5mm.

6. The aerogel composite material vacuum impregnation device according to claim 1, characterized in that: A plurality of hanging holes are provided on the top of the flexible bag body.

7. The aerogel composite material vacuum impregnation device according to claim 1, characterized in that: Also included is an adjustable form shell; The adjustable mold shell includes a first mold shell and a second mold shell, wherein the first mold shell and the second mold shell are arranged opposite to each other and connected, and an accommodating space is formed between the first mold shell and the second mold shell; The first mold shell includes a first bracket and a plurality of first sleeves connected to the first bracket; A first sliding rod is sleeved in each of the first sleeves, and the length of the first sliding rod is greater than the length of the first sleeve; The second mold shell includes a second bracket and a plurality of second sleeves connected to the second bracket; A second sliding rod is sleeved in each of the second sleeves, and the length of the second sliding rod is greater than the length of the second sleeve; The two ends of the first bracket and the two ends of the second bracket are detachably connected through a first connecting member and a second connecting member; The first connecting member and the second connecting member are respectively provided with a first through hole and a second through hole.

8. The aerogel composite material vacuum impregnation device according to claim 7, characterized in that: The first connecting member includes a first sliding plate and a first supporting member provided with a first sliding groove, and the first sliding plate is slidably connected to the first sliding groove; A first sliding hole is provided at the bottom of the first sliding groove, and a second sliding hole is provided at the first sliding sheet. The first sliding sheet and the first sliding groove are detachably connected by a first screw passing through the first sliding hole, the second sliding hole and connecting with the first nut; The surface of the first chute is provided with a scale; and / or The second connecting member includes a second sliding plate and a second supporting member provided with a second sliding groove, and the second sliding plate is slidably connected to the second sliding groove; A third sliding hole is provided at the bottom of the second sliding groove, and a fourth sliding hole is provided at the second sliding sheet. The second sliding sheet and the second sliding groove are detachably connected by the second screw passing through the third sliding hole and the fourth sliding hole and connecting with the second nut; A scale is provided on the surface of the second chute.

9. A vacuum impregnation method for an aerogel composite material, characterized in that: The matrix material is impregnated and aged by the aerogel composite material vacuum impregnation device according to any one of claims 1 to 8; The specific steps include: Connect the first channel opening on the outside of the flexible bag body to the first pipeline, and connect the second channel opening to the second pipeline; Open the opening of the flexible bag body, put the base material to be impregnated into the opening of the flexible bag body and lock it; The opening connecting the first three-way valve and the second channel hole is closed, and the opening connecting the second three-way valve and the liquid outlet pipe is closed; Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the surface of the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the pressure in the flexible bag body reaches a preset negative pressure value; The opening connecting the second three-way valve to the liquid outlet pipe is closed, the opening connecting the first three-way valve to the second channel and the first liquid inlet pipe is opened, and the opening connecting the first three-way valve to the second liquid inlet pipe is closed; The first liquid storage device stores a sol solution, and the sol solution in the first liquid storage device is quantitatively pumped into the flexible bag body by the first liquid inlet pump and / or the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed; After the sol solution in the flexible bag body is impregnated into the matrix material and gelled inside the matrix material; the port connecting the second three-way valve and the first three-way valve is closed, the port connecting the second three-way valve and the liquid outlet pipe is opened, the excess sol solution in the flexible bag body is pumped out by the liquid outlet pump, and then the port connecting the second three-way valve and the liquid outlet pipe is closed; Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the negative pressure in the flexible bag body reaches a preset negative pressure value; The opening connecting the first three-way valve and the first liquid inlet delivery pipeline is closed; the opening connecting the first three-way valve and the second liquid inlet delivery pipeline and the second channel is opened; The second liquid storage device stores an aging solution, and the aging solution of the second liquid storage device is quantitatively pumped into the flexible bag body through the second liquid inlet pump and / or the negative pressure inside the flexible bag body; the port connecting the first three-way valve and the second channel is closed; the impregnated matrix material is aged by the aging solution, and after the aging is completed, the port connecting the second three-way valve and the first three-way valve is closed, the port connecting the second three-way valve and the liquid outlet pipe is opened, the excess aging solution in the flexible bag body is extracted by the liquid outlet pump, and then the port connecting the second three-way valve and the liquid outlet pipe is closed, so as to realize the impregnation, sol and aging of the matrix material of the aerogel composite material.

10. The vacuum impregnation method of aerogel composite material according to claim 1, characterized in that: Open the first switch valve and the vacuum pump, and evacuate the flexible bag body through the first channel and the first channel opening, and close the first switch valve and the vacuum pump after the surface of the flexible bag body and the surface of the substrate material to be impregnated are in contact with the inner surface of the flexible bag body or the preset negative pressure value is reached in the flexible bag body; Then, the flexible bag body is placed between the first mold shell and the second mold shell, and the first pipe and the second pipe are passed through the first through hole and the second through hole respectively; Connecting the first mold shell to the second mold shell through a first connecting member and a second connecting member; The first slide bar of the first mold shell sleeved in the first sleeve tubes moves along the first sleeve tubes away from the flexible bag body; the second slide bar of the second mold shell sleeved in the second sleeve tubes moves along the second sleeve tubes away from the flexible bag body; thereby forming a containing space consistent with the shape of the matrix material to be impregnated between the first mold shell and the second mold shell; By means of a ruler provided on the surface of the first slide groove or the second slide groove, the flexible bag body is moved to the left or forward by a preset distance in the horizontal direction, and then moved to the right or backward by a preset distance in the horizontal direction, so as to form an accommodating space in a certain proportion to the outer dimensions of the matrix material to be impregnated between the first mold shell and the second mold shell; Then, the sol solution is introduced into the flexible bag body in sequence, the bag is immersed, excess sol solvent is removed, an aging solution is introduced, the bag is aged, and excess aging solution is removed.