Continuous production process of aerogel composite material

Abstract

The invention discloses a continuous production process of an aerogel composite material. The continuous production process comprises the following steps: preparing a precursor solution; a continuous fiber matrix material roll is arranged outside a first transmission shaft of a continuous unwinding device in a sleeving mode and fixed; a continuous fiber material at one end of the continuous fiber matrix material roll sequentially penetrates through a continuous fiber matrix dipping device, a continuous gel curing device, a continuous aging device, a continuous modification device and a continuous drying device to be connected with a second transmission shaft of a continuous winding device; and continuous production is achieved, adjustment of different processes can be adapted, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of aerogel composite material production, and in particular to the field of a continuous production process of aerogel composite materials. Background Art

[0002] Aerogel composite materials have excellent thermal insulation and high temperature resistance, as well as good strength;

[0003] The large-scale industrial production process of aerogel composites is time-consuming and involves many steps, including fiber matrix impregnation, gel curing, aging, and drying. Traditional industrial production uses segmented and intermittent production processes, resulting in low production efficiency and high production costs. In the actual production process, the process time between each step is different, and the product models and indicators produced during production are not exactly the same.

[0004] Therefore, how to achieve continuous production and adapt to different process adjustments to improve production efficiency has become a difficult problem that needs to be solved urgently in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a continuous production process for aerogel composite materials, which can realize continuous production and adapt to different process adjustments to improve production efficiency.

[0006] The present invention provides a continuous production process of an aerogel composite material, comprising the following steps: preparing a precursor solution;

[0007] The continuous fiber matrix material roll is sleeved outside the first transmission shaft of the continuous unwinding device and fixed;

[0008] The continuous fiber material at one end of the continuous fiber matrix material roll is sequentially passed through the continuous fiber matrix impregnation device, the continuous gel curing device, the continuous aging device, the continuous modification device, the continuous drying device and connected to the second transmission shaft of the continuous winding device;

[0009] adding the prepared precursor solution into a continuous fiber matrix impregnation device;

[0010] The continuous aging device includes a spraying device; the spraying device is turned on to spray the aging solution through the spraying device toward the continuous fiber material passing through the continuous aging device;

[0011] The continuous modification device comprises a modification solution container, and the modification solution is added to the modification solution storage container;

[0012] The continuous drying device includes a box body and a heating device inside the box body. The heating device is turned on and the heating method is microwave heating, which can effectively shorten the drying time. The temperature inside the box body is 40-80℃; the drying time is 15-60 minutes;

[0013] The continuous unwinding device and the power device of the continuous unwinding device are turned on to realize the same-direction rotation of the first transmission shaft and the second transmission shaft; the continuous fiber material wrapped around the base material roll on the first transmission shaft is impregnated with a precursor solution, gel solidified, gel aged, modified with a modifying solution, and dried, and then wound around the second transmission shaft to obtain a continuous aerogel composite material roll wrapped around the second transmission shaft;

[0014] During the process of passing the continuous fiber material through the continuous aging device, the length L1 of the continuous fiber material passing through the continuous aging device can be adjusted;

[0015] In the process of passing the continuous fiber material through the continuous modification device, the length L2 of the continuous fiber material passing through the continuous modification device can be adjusted; L1:L2 is 1:(1-2.2); preferably, the heating method is microwave heating; further preferably, the linear speed of the continuous fiber matrix material roll when the continuous unwinding device is unwinding is greater than or equal to the linear speed of the continuous aerogel composite material roll when the continuous winding device is unwinding.

[0016] The beneficial effect of the present invention over the prior art is that, by sequentially passing the continuous fiber material at one end of the continuous fiber matrix material roll through the continuous fiber matrix impregnation device, the continuous gel curing device, the continuous aging device, the continuous modification device, the continuous drying device and connecting with the second transmission shaft of the continuous winding device, the continuous fiber matrix material is continuously and sequentially impregnated with a precursor solution, continuously cured, continuously aged, continuously modified and continuously dried, and finally continuous production is achieved;

[0017] The prepared precursor solution is added to the continuous fiber matrix impregnation device to achieve continuous impregnation of the continuous fiber material in the precursor solution, and the impregnation time of the continuous fiber material is achieved by the time the continuous fiber material passes through the container storing the precursor solution;

[0018] When the continuous fiber material passes through the continuous aging device, the spray device is turned on, and the aging solution is sprayed to the continuous fiber material passing through the continuous aging device through the spray device, so as to realize continuous aging of the continuous fiber material. In addition, the route through which the continuous fiber material passes can be set according to the space of the production environment, so as to adjust the route length without affecting the length of the occupied plant, thereby realizing the adjustment of the continuous aging time without changing the linear speed of the continuous fiber material, and realizing the aging of the continuous fiber material by using the same aging solution in different time periods, so as to realize the production of products of different models and different performances through the same set of continuous production equipment;

[0019] By adding the modifying solution into the modifying solution storage container, the continuous fiber material is modified when the continuous fiber material passes through the modifying solution, the time the continuous fiber material passes through the modifying solution is the modification time, and by setting or changing the route of the continuous fiber when passing through the modifying solution, the length of the route passing through the modifying solution is changed, thereby achieving the change of the modification time without changing the linear speed of the continuous fiber material;

[0020] The continuous drying device includes a box body and a heating device in the box body. The heating device is turned on. The time for the continuous fiber material to pass through the box body of the continuous drying device is the drying time. Since the process adopts a modification process after aging, the modified continuous fiber material can be dried under normal pressure, so that the continuous drying device can be dried without being completely sealed.

[0021] By turning on the continuous unwinding device and the power device of the continuous unwinding device, the first transmission shaft and the second transmission shaft rotate in the same direction, so as to realize the movement of the continuous fiber material, and the continuous fiber material will not be broken or damaged due to long-term tension;

[0022] By preferably setting the linear speed of the continuous fiber matrix material roll when the continuous unwinding device is unwinding to be greater than or equal to the linear speed of the continuous aerogel composite material roll when the continuous winding device is unwinding, it is further beneficial to avoid the phenomenon that the continuous fiber material is broken or damaged due to long-term tension;

[0023] The length L1 of the continuous fiber material passing through the continuous aging device can be adjusted, and the length L2 of the continuous fiber material passing through the continuous modification device can be adjusted, so that the aging time and modification time of the continuous fiber material can be changed without changing the linear speed of the continuous fiber material;

[0024] By setting L1:L2 to 1:(1-2.2), the ratio of the aging time to the modification time of the continuous fiber material during the continuous production process is achieved to be L1:L2 to be 1:(1-2.2).

[0025] Further, the precursor solution is prepared by a precursor solution preparation device, wherein the precursor solution preparation device includes a solvent storage tank, a silicon source storage tank, a catalyst storage tank, a first mixed solution preparation tank, a second mixed solution preparation tank, a precursor preparation tank, and a precursor slow-filling tank;

[0026] The silicon source in the silicon source storage tank and the solvent in the solvent storage tank are added to the first mixed solution preparation tank at a mass ratio of (0.3-0.6):1 to obtain a first mixed solution, and the catalyst in the catalyst storage tank and the solvent in the solvent storage tank are added to the second mixed solution preparation tank at a mass ratio of (0.15-0.3):1 to obtain a second mixed solution;

[0027] The first mixed solution and the second mixed solution are added into the precursor preparation tank in a mass ratio of (3-5):(5-7) to mix and obtain a precursor solution, and all the prepared precursor solutions are transferred into the precursor slow-filling tank; and then the precursor solution is prepared by the precursor preparation tank;

[0028] The precursor solution in the precursor slow-filling tank is used to replenish the precursor solution in the continuous fiber matrix impregnation device;

[0029] The solvent is deionized water; the silicon source includes water glass or silica sol; and the catalyst includes one of dilute hydrochloric acid, dilute sulfuric acid, acetic acid, oxalic acid and citric acid.

[0030] The beneficial effect of adopting the previous step is that the preparation of the precursor solution is realized by transferring all the prepared precursor solution to the precursor slow filling tank, so that the precursor solution can still be added to the continuous fiber matrix impregnation device during the preparation of the precursor solution.

[0031] Furthermore, the process of the continuous fiber material passing through the continuous fiber matrix impregnation device comprises the following steps:

[0032] The continuous fiber matrix impregnation device comprises an impregnation solution container and an impregnation transmission device;

[0033] The impregnation transmission device comprises a first impregnation support roller, a plurality of second impregnation support rollers, a plurality of first impregnation pressing rollers, a second impregnation pressing roller, and a third impregnation support roller; the second impregnation support roller is arranged opposite to the first impregnation pressing roller; the plurality of second impregnation support rollers, the plurality of first impregnation pressing rollers, and the second impregnation pressing roller are located inside the impregnation solution container;

[0034] Passing the continuous fiber material sequentially from above the first impregnation support roller, between the second impregnation support roller and the first impregnation press roller, below the second impregnation press roller, and above the third impregnation support roller;

[0035] The continuous fiber material is located inside the impregnation solution container between a first impregnation press roller and a second impregnation press roller which are located inside the impregnation solution container and close to the continuous unwinding device.

[0036] The beneficial effect of adopting the previous step is that the continuous fiber material between the first impregnation roller and the second impregnation roller is located inside the impregnation solution container, so that the continuous fiber material is impregnated with the precursor solution when passing between the first impregnation roller and the second impregnation roller, and the continuous fiber material passes through between the second impregnation support roller and the first impregnation roller, thereby lowering the movement path of the continuous fiber so that it can be impregnated with the precursor solution, and at the same time, it is beneficial to avoid the problem of the continuous fiber deviating from the set movement trajectory when it is excessively relaxed; the third impregnation support roller is beneficial to remove excess precursor solution on the surface of the continuous fiber.

[0037] Furthermore, the process of the continuous fiber material passing through the continuous gel curing device comprises the following steps:

[0038] The continuous gel curing device comprises a continuous curing support frame and a curing conveyor belt rotatably connected to the continuous curing support frame;

[0039] The continuous fiber material passing through the continuous fiber matrix impregnation device is laid on the surface of the curing conveyor belt located above the continuous curing support frame;

[0040] The linear speed of the curing conveyor belt is the same as the linear speed of the continuous fiber material; preferably, the curing conveyor belt is a conveyor mesh belt; preferably, the curing conveyor belt is provided with a first groove, the width of the groove is greater than or equal to the width of the continuous fiber material, and the continuous fiber material is laid in the first groove; further preferably, second grooves are provided on both sides of the first groove, and the lowest point of the second groove is higher than the lowest point of the first groove.

[0041] The beneficial effect of adopting the previous step is that the continuous fiber material is moved on the conveyor belt with the conveyor belt and aged during the movement. The linear speed of the curing conveyor belt is the same as the linear speed of the continuous fiber material, which avoids the problem of excessive overflow of the aging solution impregnated into the continuous fiber material due to friction between the continuous fiber material and the curing conveyor belt, which is beneficial to improving the impregnation effect of the precursor solution on the continuous fiber material. Preferably, the curing conveyor belt is provided with a first groove, the width of the groove is greater than or equal to the width of the continuous fiber material, and the continuous fiber material is laid in the first groove, so that a small amount of precursor solution that seeps out during the curing process will not be lost, but will still adhere to the surface of the continuous fiber material and cure, thereby avoiding the loss of the impregnated precursor solution during the curing process.

[0042] Further, the continuous aging device includes a lifting device, a first aging device, a second aging device, a third aging device, a first aging recovery container, a second aging recovery container, and a third aging recovery container;

[0043] The lifting device includes a lifting bracket that is 60-90 degrees to the ground, a lifting conveyor belt rotatably connected to the lifting bracket, a first lifting roller, a second lifting roller, and a first lifting support roller;

[0044] The first aging device comprises a first aging bracket vertically arranged on the ground, a first aging conveyor belt transmission-connected to the first aging bracket, a first spray device, a first aging roller A, a first aging support roller A, and a first aging roller B;

[0045] The second aging device comprises a second aging bracket vertically arranged on the ground, a first aging conveyor belt second injection device transmission-connected to the second aging bracket, a second aging roller A, a second aging support roller A, and a second aging roller B;

[0046] The third aging device includes a third aging bracket vertically arranged on the ground, a first aging conveyor belt third injection device transmission-connected to the third aging bracket, a third aging pressure roller A, a third aging support roller A, and a third aging pressure roller B;

[0047] The second lifting roller is set at a height lower than the first lifting roller, and the second lifting roller is rotatably connected to the first aging recovery container;

[0048] The first aging roller A is set at a height lower than the first lifting roller and higher than the first aging roller B. The first aging roller A is rotatably connected to the first aging recovery container. The second lifting roller and the first aging roller A are located in the first aging recovery container.

[0049] The second aging roller A is set at a height lower than the first aging roller A and higher than the second aging roller B. The first aging roller B and the second aging roller A are rotatably connected to the second aging recovery container. The first aging roller B and the second aging roller A are located in the second aging recovery container.

[0050] The third aging roller A is set at a height lower than the second aging roller A. The second aging roller B and the third aging roller A are rotatably connected to the third aging recovery container. The second aging roller B and the third aging roller A are located in the third aging recovery container.

[0051] The beneficial effect of the above step is that the continuous aging device includes a lifting device, so that the cured continuous fiber material is lifted and then connected to the continuous aging device, thereby greatly increasing the movement route of the continuous fiber material in the continuous aging device without changing the horizontal length of the continuous aging device, thereby solving the problem of long aging time of the continuous fiber material without changing the linear speed of the continuous fiber material;

[0052] Through the first aging device, the second aging device, and the third aging device, the problem of long aging time of the continuous fiber material is solved without changing the linear speed of the continuous fiber material, and the number of continuous fiber materials passing through the first aging device, the second aging device, and the third aging device can be selected to adjust the length of the movement path of the continuous fiber material in the continuous aging device;

[0053] The lifting device includes a lifting bracket that is 60-90 degrees to the ground and a lifting conveyor belt that is rotatably connected to the lifting bracket. While lifting the continuous fiber material, the lifting conveyor belt is further provided with movement power for the continuous conveyor belt and has a certain supporting effect, which is conducive to preventing the continuous fiber material from being broken or damaged during the lifting process.

[0054] The first aging device includes a first aging bracket vertically arranged on the ground, a first aging conveyor belt transmission-connected to the first aging bracket, a first spray device, a first aging roller A, a first aging support roller A, and a first aging roller B, so that the continuous fiber material has a long movement path in the first aging device, which is beneficial to increasing the aging time; the continuous fiber material is aged by adding an aging solution through the first spray device;

[0055] By setting the second lifting roller to be lower than the first lifting roller, setting the first aging roller A to be lower than the first lifting roller and higher than the first aging roller B, setting the second aging roller A to be lower than the first aging roller A and higher than the second aging roller B, and setting the third aging roller A to be lower than the second aging roller A, a space is provided for the installation of the first aging recovery container, the second aging recovery container, and the third aging recovery container, so that the second lifting roller and the first aging roller A are located in the first aging recovery container, the first aging roller B and the second aging roller A are located in the second aging recovery container, and the second aging roller B and the third aging roller A are located in the third aging recovery container; thereby, the first aging recovery container, the second aging recovery container, and the third aging recovery container can respectively recover the aging solutions sprayed by the first spray device, the second spray device, and the third spray device, and at the same time, the continuous fiber materials located in the aging recovery container can be aged separately, thereby improving the aging efficiency.

[0056] Furthermore, the process of the continuous fiber material passing through the continuous aging device comprises the following steps:

[0057] The continuous fiber material passing through the continuous curing device is sequentially passed from under the first lifting roller, under the first lifting support roller, under the second lifting roller, under the first aging roller A, above the first aging support roller A, under the first aging roller B, under the second aging roller A, above the second aging support roller A, under the second aging roller B, under the third aging roller A, above the third aging support roller A, and under the third aging roller B;

[0058] and / or

[0059] The process of spraying the aging solution through the spraying device onto the continuous fiber material passing through the continuous aging device comprises the following steps:

[0060] Open the first injection device, the second injection device, and the third injection device in sequence;

[0061] The first spraying device sprays the first aging solution onto the continuous fiber material between the first lifting support roller and the second lifting pressure roller, and onto the continuous fiber material between the first aging pressure roller A and the first aging support roller A;

[0062] The continuous fiber material between the second lifting roller and the first aging roller A is located in a first aging recovery container, and the first aging recovery container contains a first aging solution;

[0063] The second spraying device sprays the second aging solution onto the continuous fiber material between the first aging support roller A and the first aging pressure roller B, and onto the continuous fiber material between the second aging pressure roller A and the second aging support roller A;

[0064] The continuous fiber material between the first aging roller B and the second aging roller A is located in a second aging recovery container, and the second aging recovery container contains a second aging solution;

[0065] The third spraying device sprays the third aging solution onto the continuous fiber material between the second aging support roller A and the second aging pressure roller B, and onto the continuous fiber material between the third aging pressure roller A and the third aging support roller A;

[0066] The continuous fiber material between the second aging roller B and the third aging roller A is located in a second aging recovery container, and the third aging recovery container contains a third aging solution; preferably, the first aging solution is anhydrous ethanol; the second aging solution is deionized water; the third aging solution includes hexamethyldisiloxane or a mixed solution of deionized water and hexamethyldisiloxane, and the mass ratio of deionized water to hexamethyldisiloxane is (0.05-1): (0.05-0.1).

[0067] The beneficial effect of the above step is that the continuous fiber material is continuously passed through the first aging device, the second aging device, and the third aging device, and whether to pass through the second aging device and / or the third aging device is adjustable; the continuous fiber material can be aged by the first spray device with the first aging solution, then the continuous fiber material is aged by the second spray device with the second aging solution, and finally the continuous fiber material is aged by the third spray device with the third aging solution;

[0068] The first aging solution is anhydrous ethanol; the second aging solution is deionized water; the second aging solvent is deionized water to remove impurity ions inside the cured gel; the third aging solution includes deionized water and hexamethyldisilazane, so that impurities in the cured gel are further removed, and hexamethyldisilazane is used to replace water in the cured gel, which is beneficial to the subsequent modification of the cured gel.

[0069] Furthermore, the process of the continuous fiber material passing through the continuous modification device comprises the following steps:

[0070] The continuous modification device further comprises a first modified pressure roller, a first modified support roller, a second modified support roller, n third modified support rollers, and m fourth modified support rollers; n≥3, m≥3;

[0071] The modifying solution container is provided with a modifying solution;

[0072] The first modification support roller is located outside the modification solution container, higher than the modification solution container, and above one end of the modification solution container close to the continuous modification device or between the modification solution container and the continuous modification device;

[0073] The second modified support roller is located outside the modified solution container, higher than the modified solution container, and located above one end of the modified solution container close to the continuous drying device or between the modified solution container and the continuous drying device;

[0074] The n third modified support rollers are all located inside the modified solution container and close to one side of the continuous aging device, and the n third modified support rollers are vertically arranged from top to bottom;

[0075] The m fourth modified support rollers are all located inside the modified solution container near the continuous drying device, and the n third modified support rollers are vertically arranged from top to bottom;

[0076] The first modified pressing roller is located inside the modified solution container, and the fourth modified supporting roller is located inside the modified solution container on one side close to the drying device, and the height of the first modified pressing roller is not higher than the lowest height;

[0077] The continuous fiber material passing through the continuous aging device passes over the first modified support roller in sequence, then passes around the third modified support roller and the fourth modified support roller alternately from top to bottom and from left to right, then passes under the first modified pressing roller and over the second modified support roller;

[0078] The continuous fiber material between the third modified support roller with the highest setting position and the second modified support roller is located in the modified solution container; preferably, the modified solution includes trimethylchlorosilane or hexamethyldisilazane, and further preferably, the temperature of the modified solution is 60-80°C.

[0079] The beneficial effect of adopting the above step is that the continuous fiber material is lifted and enters from the top of the modified solution container, and then can alternately pass through and then alternately bypass the third modified support roller and the fourth modified support roller from top to bottom and from left to right, so that the continuous fiber material can continuously and orderly move in the modified solution in the modified solution container, and be modified during the movement; the continuous fiber material can move along a long route in the modified solution, thereby achieving a long modification time without changing the linear speed of the continuous fiber material;

[0080] The first modified pressing roller is used to enable the continuous fiber material to come out of the modified solution container in an orderly manner after passing through the third modified supporting roller and the fourth modified supporting roller alternately;

[0081] At the same time, the number of continuous fiber materials bypassing the third modification support roller and the fourth modification support roller can be adjusted, and the length of the route through which the continuous fiber materials pass in the modification solution container can be adjusted, thereby adjusting the movement time of the continuous fiber materials in the modification solution without changing the linear speed of the continuous fiber materials, thereby adjusting the modification time according to different models and performance products;

[0082] The modification solution includes trimethylchlorosilane or hexamethyldisilazane, which is conducive to realizing rapid modification of the interior of the cured gel, that is, trimethylchlorosilane or hexamethyldisilazane is decomposed and combined with the interior of the cured gel, and at the same time, the activity of hexamethyldisiloxane entering the interior of the cured gel during aging is enhanced and combined with the interior of the cured gel, thereby improving the modification efficiency and realizing uniform modification of the interior of the cured gel, avoiding that during the modification process, the cured gel near the surface is modified faster, while the interior is modified slower or insufficiently, thereby resulting in a longer subsequent drying time.

[0083] Furthermore, the process of connecting the continuous drying device to the second transmission shaft of the continuous winding device includes the following steps:

[0084] The continuous drying device also includes a first drying roller, a second drying roller, and a drying conveyor belt;

[0085] The first drying roller and the second drying roller are located outside the box;

[0086] The first drying roller is located between the continuous modifying device and the continuous drying device, and the height of the first drying roller is the same as the height of the inlet end of the drying conveyor belt;

[0087] The second drying roller is located between the continuous drying device and the continuous winding device, and the height of the second drying roller is the same as the outlet end of the drying conveyor belt or is located between the outlet end of the drying conveyor belt and the highest point of the continuous winding device;

[0088] The continuous fiber material passing through the continuous modification device is sequentially passed under the first drying roller, and then laid on the surface of the drying conveyor belt, and then connected to the second rotating shaft of the continuous winding device under the second drying roller;

[0089] The continuous fiber material laid on the surface of the drying conveyor belt is located inside the box; preferably, the linear speed of the drying conveyor belt is the same as the linear speed of the continuous fiber material.

[0090] The beneficial effect of the above step is that the modified continuous fiber material is dried on the drying conveyor belt in the box during movement; the continuous fiber material is supported by the drying conveyor belt, and the continuous conveyor belt does not move relative to the continuous fiber material, thereby avoiding the damage or breakage of the modified continuous fiber material;

[0091] The height of the first drying roller is the same as the height of the inlet end of the drying conveyor belt, which is further helpful to avoid the continuous fiber material from being damaged or broken;

[0092] By locating the second drying roller between the continuous drying device and the continuous winding device, and the height of the second drying roller being the same as the outlet end of the drying conveyor belt or being located between the outlet end of the drying conveyor belt and the highest point of the continuous winding device, the dried continuous fiber material is connected to the continuous winding device, and this is further beneficial to avoiding damage or breakage of the continuous fiber material.

[0093] Furthermore, the continuous production process of aerogel composite materials also includes: confirming the linear velocity of the continuous fiber material movement: V1, the angular velocity of the first transmission shaft: ω1, the angular velocity of the second transmission shaft: ω2, the curing conveyor belt linear velocity: V2, the lifting conveyor belt linear velocity: V3, the first aging conveyor belt linear velocity: V4, the second aging conveyor belt linear velocity: V5, the third aging conveyor belt linear velocity: V6, the drying conveyor belt linear velocity: V7, the length L1 of the continuous fiber material passing through the continuous aging device, and the length L2 of the continuous fiber material passing through the continuous drying device; specifically including the following steps:

[0094] According to the drying time T=0.25-1h of the continuous fiber material after impregnation, curing, aging and modification, and the continuous drying equipment box L3, the linear speed of the continuous fiber material in the production process is calculated by formula 1;

[0095] Formula 1: V1 = L3 / T;

[0096] ω1=V1 / R1,ω2=V1 / R2;

[0097] R1 is the real-time radius of the continuous fiber matrix material roll connected to the continuous unwinding device at the beginning of production and during the production process;

[0098] R2 is the real-time radius of the continuous aerogel composite roll connected to the continuous winding device at the beginning of production and during production;

[0099] V1=V2=V3=V4=V5=V6;

[0100] L1=V1×t1, t1 is the aging time of continuous fiber material, which is 12-24h;

[0101] L2=V1×t2, t2 is the modification time of the continuous fiber material, 12-52.8h.

[0102] The beneficial effects of the previous step are used to confirm the continuous production process parameters of the aerogel composite material, so that the continuous fiber material is continuously impregnated, cured, aged, modified, dried and then wound on a second rotating shaft to form a continuous aerogel composite roll; and the linear speed of the continuous fiber material in each stage is the same, but the process treatment time in each stage is different, so as to meet the production process requirements and obtain a qualified aerogel composite material.

[0103] Furthermore, the method for adjusting the length L1 of the continuous fiber material passing through the continuous aging device comprises the following steps:

[0104] L1 is determined by the linear velocity V1 of the continuous fiber material and the aging time t1 of the continuous fiber material; L1 = V1 × t1;

[0105] Then, L1 adjustment is achieved by adjusting the process of continuous fiber material passing through the continuous aging device;

[0106] According to the relationship between the length LA of the continuous fiber material between the first lifting support roller and the first aged support roller A, the length LB of the continuous fiber material between the first aged support roller A and the second aged support roller A, the length LC of the continuous fiber material between the second aged support roller A and the third aged support roller B and L1, whether the continuous fiber material passes under the second aged pressing roller A and / or under the third aged pressing roller A is adjusted to achieve the adjustment of L1;

[0107] and / or

[0108] The method for adjusting the length L2 of the continuous fiber material passing through the continuous modification device comprises the following steps:

[0109] According to the linear velocity V1 of the continuous fiber material and the modification time t2 of the continuous fiber material, L2 is determined; L2 = V1 × t2;

[0110] Then, L2 adjustment is achieved by adjusting the process of continuous fiber material passing through the continuous modification device;

[0111] According to the relationship between the axial distance d between the adjacent third modified support roller and the fourth modified support roller and L2, the number and amount of the continuous fiber material bypassing the third modified support roller and the fourth modified support roller are adjusted to achieve the adjustment of L1.

[0112] The beneficial effect of adopting the previous step is that a method for adjusting the length L1 of the continuous fiber material passing through the continuous aging device and the length L2 of the continuous fiber material passing through the continuous modification device is realized, thereby realizing the change of the aging time and the modification time of the continuous fiber material without changing the linear speed of the continuous fiber material; thereby realizing that different process parameters are required for products of different models and performances, and they can still be produced by the same set of equipment (therefore, the longest stage in each stage of the entire production process is the modification time, followed by the aging time); at the same time, the ratio of the aging time to the modification time of the continuous fiber material can be controlled to be 1: (1-2.2), thereby improving the quality of the final aerogel composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0113] Figure 1 It is a structural schematic diagram of the rolling device.

[0114] The markings shown in the accompanying drawings are: 1, continuous unwinding device; 2, continuous fiber matrix material roll; 3, impregnation solution container; 4, first impregnation support roller; 5, second impregnation support roller; 6, first impregnation pressure roller; 7, second impregnation pressure roller; 8, third impregnation support roller; 9, curing conveyor belt; 10, lifting conveyor belt; 11, first lifting pressure roller; 12, second lifting pressure roller; 13, first lifting support roller; 14, first injection device; 15, first aging pressure roller A; 16, first aging support roller A; 17, first aging pressure roller B; 18, first aging conveyor belt; 19, second injection device; 20, second aging pressure roller A; 21, second aging support roller A; 22, second aging pressure roller B; 23, second aging conveyor belt; 24, third aging pressure roller Roller A; 25, third aging support roller A; 26, third aging pressure roller B; 27, third injection device; 28, third aging conveyor belt; 29, continuous aging device; 30, continuous modification device; 31, first modified support roller; 32, third modified support roller; 33, fourth modified support roller; 34, first modified pressure roller; 35, second modified support roller; 36, first drying pressure roller; 37, drying conveyor belt; 38, box; 39, second drying pressure roller; 40, continuous winding device; 41, continuous aerogel composite material roll; 42, solvent storage tank; 43, silicon source storage tank; 44, catalyst storage tank; 45, first mixed solution preparation tank; 46, second mixed solution preparation tank; 47, precursor preparation tank; 48, precursor slow filling tank. DETAILED DESCRIPTION

[0115] In order to better understand the technical solution of the present invention, the present invention is further described below in conjunction with specific embodiments and drawings.

[0116] Embodiment 1:

[0117] This embodiment provides a continuous production process of an aerogel composite material according to the present invention, comprising the following steps: preparing a precursor solution;

[0118] The continuous fiber matrix material roll 2 is sleeved on the outside of the first transmission shaft of the continuous unwinding device 1 and fixed;

[0119] The continuous fiber material at one end of the continuous fiber matrix material roll 2 is sequentially passed through the continuous fiber matrix impregnation device, the continuous gel curing device, the continuous aging device 29, the continuous modification device 30, the continuous drying device and connected to the second transmission shaft of the second drying roller 39;

[0120] Add the prepared precursor solution to the continuous fiber matrix impregnation device; prepare the precursor solution by the precursor solution preparation device, the precursor solution preparation device includes a solvent storage tank 42, a silicon source storage tank 43, a catalyst storage tank 44, a first mixed solution preparation tank 45, a second mixed solution preparation tank 46, a precursor preparation tank 47, and a precursor slow filling tank 48;

[0121] The silicon source in the silicon source storage tank 43 and the solvent in the solvent storage tank 42 are added to the first mixed solution preparation tank 45 at a mass ratio of 0.45:1 to mix to obtain a first mixed solution, and the catalyst in the catalyst storage tank 44 and the solvent in the solvent storage tank 42 are added to the second mixed solution preparation tank 46 at a mass ratio of 0.28:1 to mix to obtain a second mixed solution;

[0122] The first mixed solution and the second mixed solution are added into the precursor preparation storage tank 47 at a mass ratio of 4:6 to mix to obtain a precursor solution, and all the prepared precursor solutions are transferred to the precursor slow-filling tank 48; and then the precursor solution is prepared by the precursor preparation tank;

[0123] The precursor solution in the precursor slow-filling tank 48 is used to replenish the precursor solution in the continuous fiber matrix impregnation device;

[0124] The solvent is deionized water; the silicon source includes water glass; and the catalyst includes dilute hydrochloric acid.

[0125] The process of the continuous fiber material passing through the continuous fiber matrix impregnation device comprises the following steps:

[0126] The continuous fiber matrix impregnation device comprises an impregnation solution container 3 and an impregnation transmission device;

[0127] The impregnation transmission device includes a first impregnation support roller 4, a plurality of second impregnation support rollers 5, a plurality of first impregnation pressing rollers 6, a second impregnation pressing roller 7, and a third impregnation support roller 8; the second impregnation support roller 5 is arranged opposite to the first impregnation pressing roller 6; the plurality of second impregnation support rollers 5, the plurality of first impregnation pressing rollers 6, and the second impregnation pressing roller 7 are located inside the impregnation solution container 3;

[0128] The continuous fiber material is passed sequentially from above the first impregnation support roller 4, between the second impregnation support roller 5 and the first impregnation press roller 6, below the second impregnation press roller 7, and above the third impregnation support roller 8;

[0129] The continuous fiber material is located inside the impregnation solution container 3 between the first impregnation roller 6 and the second impregnation roller 7 which are located inside the impregnation solution container 3 and close to the continuous unwinding device 1 .

[0130] The process of the continuous fiber material passing through the continuous gel curing device comprises the following steps:

[0131] The continuous gel curing device comprises a continuous curing support frame and a curing conveyor belt 9 rotatably connected to the continuous curing support frame;

[0132] The continuous fiber material passing through the continuous fiber matrix impregnation device is laid on the surface of the curing conveyor belt 9 located above the continuous curing support frame;

[0133] The linear speed of the curing conveyor belt 9 is the same as the linear speed of the continuous fiber material; the conveyor belt is provided with a first groove, the width of the groove is greater than or equal to the width of the continuous fiber material, and the continuous fiber material is laid in the first groove;

[0134] The continuous aging device 29 includes a spray device; the spray device is turned on to spray the aging solution through the spray device to the continuous fiber material passing through the continuous aging device 29;

[0135] The continuous aging device 29 includes a lifting device, a first aging device, a second aging device, a third aging device, a first aging recovery container, a second aging recovery container, and a third aging recovery container;

[0136] The lifting device includes a lifting bracket that is 75 degrees to the ground, a lifting conveyor belt 10 rotatably connected to the lifting bracket, a first lifting roller 11, a second lifting roller 12, and a first lifting support roller 13;

[0137] The first aging device includes a first aging bracket vertically arranged on the ground, a first aging conveyor belt 18 drivingly connected to the first aging bracket, a first spray device 14, a first aging roller A15, a first aging support roller A16, and a first aging roller B17;

[0138] The second aging device includes a second aging bracket vertically arranged on the ground, a first aging conveyor belt 18 and a second spray device 19, a second aging roller A20, a second aging support roller A21, and a second aging roller B22, which are transmission-connected to the second aging bracket;

[0139] The third aging device includes a third aging bracket vertically arranged on the ground, a first aging conveyor belt 18 transmission-connected to the third aging bracket, a third spray device 27, a third aging roller A24, a third aging support roller A25, and a third aging roller B26;

[0140] The second lifting roller 12 is arranged at a height lower than the first lifting roller 11, and the second lifting roller 12 is rotatably connected to the first aging recovery container;

[0141] The first aging roller A15 is set at a height lower than the first lifting roller 11 and higher than the first aging roller B17. The first aging roller A15 is rotatably connected to the first aging recovery container. The second lifting roller 12 and the first aging roller A15 are located in the first aging recovery container.

[0142] The second aging roller A20 is set at a height lower than the first aging roller A15 and higher than the second aging roller B22. The first aging roller B17 and the second aging roller A20 are rotatably connected to the second aging recovery container. The first aging roller B17 and the second aging roller A20 are located in the second aging recovery container.

[0143] The third aging roller A24 is set at a height lower than the second aging roller A20, and the second aging roller B22 and the third aging roller A24 are rotatably connected to the third aging recovery container, and the second aging roller B22 and the third aging roller A24 are located in the third aging recovery container.

[0144] The process of the continuous fiber material passing through the continuous aging device 29 comprises the following steps:

[0145] The continuous fiber material passing through the continuous curing device is sequentially passed from under the first lifting roller 11, under the first lifting support roller 13, under the second lifting roller 12, under the first aging roller A15, above the first aging support roller A16, under the first aging roller B17, under the second aging roller A20, above the second aging support roller A21, under the second aging roller B22, under the third aging roller A24, above the third aging support roller A25, and under the third aging roller B26;

[0146] The process of spraying the aging solution to the continuous fiber material passing through the continuous aging device 29 through the spray device includes the following steps:

[0147] The first injection device 14, the second injection device 19, and the third injection device 27 are sequentially turned on;

[0148] The first spraying device 14 sprays the first aging solution onto the continuous fiber material between the first lifting support roller 13 and the second lifting pressure roller 12, and onto the continuous fiber material between the first aging pressure roller A15 and the first aging support roller A16;

[0149] The continuous fiber material between the second lifting roller 12 and the first aging roller A15 is located in a first aging recovery container, and the first aging recovery container contains a first aging solution;

[0150] The second spraying device 19 sprays the second aging solution onto the continuous fiber material between the first aging support roller A16 and the first aging pressure roller B17 and the continuous fiber material between the second aging pressure roller A20 and the second aging support roller A21;

[0151] The continuous fiber material between the first aging roller B17 and the second aging roller A20 is located in a second aging recovery container, and the second aging recovery container contains a second aging solution;

[0152] The third spraying device 27 sprays the third aging solution onto the continuous fiber material between the second aging support roller A21 and the second aging pressure roller B22 and the continuous fiber material between the third aging pressure roller A24 and the third aging support roller A25;

[0153] The continuous fiber material between the second aging roller B22 and the third aging roller A24 is located in a second aging recovery container, and the third aging recovery container contains a third aging solution; preferably, the first aging solution is anhydrous ethanol; the second aging solution is deionized water; the third aging solution includes deionized water and hexamethyldisiloxane, and the mass ratio of deionized water to surface modifier is 1:0.1;

[0154] The continuous modification device 30 comprises a modification solution container, into which the modification solution is added;

[0155] The process of the continuous fiber material passing through the continuous modification device 30 comprises the following steps:

[0156] The continuous modification device 30 further includes a first modification pressure roller 34, a first modification support roller 31, a second modification support roller 35, n third modification support rollers 32, and m fourth modification support rollers 33; n≥3, m≥3;

[0157] The modifying solution container is provided with a modifying solution;

[0158] The first modification support roller 31 is located outside the modification solution container, higher than the modification solution container, and above one end of the modification solution container close to the continuous modification device 30;

[0159] The second modification support roller 35 is located outside the modification solution container, higher than the modification solution container, and above one end of the modification solution container close to the continuous drying device;

[0160] The n third modified support rollers 32 are all located inside the modified solution container near the continuous aging device 29, and the n third modified support rollers 32 are vertically arranged from top to bottom;

[0161] The m fourth modified support rollers 33 are all located inside the modified solution container near the continuous drying device, and the n third modified support rollers 32 are vertically arranged from top to bottom;

[0162] The first modified pressing roller 34 is located inside the modified solution container, and the fourth modified supporting roller 33 is located inside the modified solution container on one side close to the drying device, and the height of the first modified pressing roller 34 is not higher than the lowest height;

[0163] The continuous fiber material passing through the continuous aging device 29 passes over the first modified support roller 31 in sequence, then bypasses the third modified support roller 32 and the fourth modified support roller 33 alternately from top to bottom and from left to right, and then passes under the first modified press roller 34 and over the second modified support roller 35; the total number of times the third modified support roller 32 and the fourth modified support roller 33 is 8;

[0164] The continuous fiber material between the third modification support roller 32 and the second modification support roller 35, which are set at the highest position, is located in the modification solution container; preferably, the modification solution includes hexamethyldisilazane, and the modification solution temperature is 77°C.

[0165] The continuous drying device includes a box 38 and a heating device in the box 38. The heating device is turned on and the heating method is microwave heating, which can effectively shorten the drying time. The temperature in the box 38 is 60°C and the drying time is 50 minutes.

[0166] The process of connecting the continuous drying device to the second transmission shaft of the second drying roller 39 comprises the following steps:

[0167] The continuous drying device also includes a first drying roller 36, a second drying roller 39, and a drying conveyor belt 37;

[0168] The first drying roller 36 and the second drying roller 39 are located outside the box 38;

[0169] The first drying roller 36 is located between the continuous modifying device 30 and the continuous drying device, and the height of the first drying roller 36 is the same as the height of the inlet end of the drying conveyor belt 37;

[0170] The second drying roller 39 is located between the continuous drying device and the second drying roller 39, and the height of the second drying roller 39 is the same as the outlet end of the drying conveyor belt 37;

[0171] The continuous fiber material passing through the continuous modification device 30 is sequentially passed under the first drying roller 36, and then laid on the surface of the drying conveyor belt 37, and then passed under the second drying roller 39 to be connected with the second rotating shaft of the second drying roller 39;

[0172] The continuous fiber material laid on the surface of the drying conveyor belt 37 is located inside the box 38; the linear speed of the drying conveyor belt 37 is the same as the linear speed of the continuous fiber material.

[0173] The continuous unwinding device 1 and the power device of the continuous unwinding device are turned on to realize the same-direction rotation of the first transmission shaft and the second transmission shaft; the continuous fiber material wrapped around the base material roll on the first transmission shaft is impregnated with a precursor solution, gel solidified, gel aged, modified with a modifying solution, and dried, and then wound around the second transmission shaft to obtain a continuous aerogel composite material roll wrapped around the second transmission shaft;

[0174] The continuous production process of aerogel composite materials also includes: confirming the linear velocity of the continuous fiber material movement: V1, the angular velocity of the first transmission shaft: ω1, the angular velocity of the second transmission shaft: ω2, the linear velocity of the curing conveyor belt 9: V2, the linear velocity of the lifting conveyor belt 10: V3, the linear velocity of the first aging conveyor belt 18: V4, the linear velocity of the second aging conveyor belt 23: V5, the linear velocity of the third aging conveyor belt 28: V6, the linear velocity of the drying conveyor belt 37: V7, the length L1 of the continuous fiber material passing through the continuous aging device 29, and the length L2 of the continuous fiber material passing through the continuous drying device; specifically including the following steps:

[0175] According to the drying time T=0.25-1h of the continuous fiber material after impregnation, curing, aging and modification, and the continuous drying equipment box 38L3, the linear speed of the continuous fiber material in the production process is calculated by formula 1;

[0176] Formula 1: V1 = L3 / T;

[0177] ω1=V1 / R1,ω2=V1 / R2;

[0178] R1 is the real-time radius of the continuous fiber matrix material roll 2 connected to the continuous unwinding device 1 at the start of production and during the production process;

[0179] R2 is the real-time radius of the continuous aerogel composite roll connected to the second drying press roller 39 at the beginning of production and during production;

[0180] V1=V2=V3=V4=V5=V6;

[0181] L1=V1×t1, t1 is the aging time of the continuous fiber material, which is 18h;

[0182] L2 = V1 × t2, t2 is the modification time of the continuous fiber material 32.4h;

[0183] The heating method is microwave heating; the linear speed of the continuous fiber matrix material roll 2 when the continuous unwinding device 1 is unwinding is equal to the linear speed of the continuous aerogel composite material roll when the second drying roller 39 is unwinding.

[0184] When the aging time and modification time of the continuous fiber material need to be adjusted according to the product model and performance, the length L1 of the continuous fiber material passing through the continuous aging device 29 can be adjusted during the continuous fiber material passes through the continuous aging device 29;

[0185] During the continuous fiber material passes through the continuous drying device, the length L2 of the continuous fiber material passing through the continuous modifying device 30 can be adjusted; L1:L2 is 1:1.8;

[0186] The method for adjusting the length L1 of the continuous fiber material passing through the continuous aging device 29 comprises the following steps:

[0187] L1 is determined by the linear velocity V1 of the continuous fiber material and the aging time t1 of the continuous fiber material; L1 = V1 × t1;

[0188] Then, L1 adjustment is achieved by adjusting the process of the continuous fiber material passing through the continuous aging device 29;

[0189] According to the relationship between the length LA of the continuous fiber material between the first lifting support roller 13 and the first aged support roller A16, the length LB of the continuous fiber material between the first aged support roller A and the second aged support roller A21, the length LC of the continuous fiber material between the second aged support roller A21 and the third aged support roller B and L1, whether the continuous fiber material passes under the second aged pressure roller A20 and / or under the third aged pressure roller A24 is adjusted to achieve the adjustment of L1;

[0190] The method for adjusting the length L2 of the continuous fiber material passing through the continuous modification device 30 comprises the following steps:

[0191] According to the linear velocity V1 of the continuous fiber material and the modification time t2 of the continuous fiber material, L2 is determined; L2 = V1 × t2;

[0192] Then, L2 adjustment is achieved by adjusting the process of the continuous fiber material passing through the continuous modification device 30;

[0193] According to the relationship between the axial distance d between the adjacent third modified support roller 32 and the fourth modified support roller 33 and L2, the number and amount of the continuous fiber material bypassing the third modified support roller 32 and the fourth modified support roller 33 are adjusted to achieve the adjustment of L1.

[0194] Embodiment 2:

[0195] The same contents as those in Example 1 are not described in detail here. The differences between this embodiment and Example 1 are as follows:

[0196] This embodiment provides a continuous production process for an aerogel composite material; further preferably, second grooves are provided on both sides of the first groove, and the lowest point of the second groove is higher than the lowest point of the first groove.

[0197] The continuous fiber material between the second aging roller B22 and the third aging roller A24 is located in a second aging recovery container, and the third aging recovery container contains a third aging solution; preferably, the first aging solution is anhydrous ethanol; the second aging solution is deionized water; and the third aging solution includes hexamethyldisiloxane;

[0198] The continuous fiber material passing through the continuous aging device 29 passes over the first modified support roller 31 in sequence, then bypasses the third modified support roller 32 and the fourth modified support roller 33 alternately from top to bottom and from left to right, then passes under the first modified press roller 34 and over the second modified support roller 35; the total number of bypasses of the third modified support roller 32 and the fourth modified support roller 33 is 6;

[0199] The continuous fiber material between the third modification support roller 32 and the second modification support roller 35, which are set at the highest position, is located in the modification solution container; preferably, the modification solution includes trimethylchlorosilane, and the modification solution temperature is 65°C;

[0200] L1=V1×t1, t1 is the aging time of the continuous fiber material, which is 20h;

[0201] L2 = V1 × t2, t2 is the modification time of the continuous fiber material 24h;

[0202] When the continuous fiber material passes through the continuous drying device, the length L2 of the continuous fiber material passing through the continuous drying device can be adjusted; L1:L2 is 1:1.2;

[0203] The continuous drying device includes a box 38 and a heating device in the box 38. The heating device is turned on and the heating method is microwave heating, which can effectively shorten the drying time. The temperature in the box 38 is 65°C and the drying time is 45 minutes.

[0204] 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 have similar functions to those disclosed in the present application (but not limited to).

Claims

1. A continuous production process for aerogel composite materials, characterized in that: The following steps are involved: preparing a precursor solution; The continuous fiber matrix material roll is sleeved outside the first transmission shaft of the continuous unwinding device and fixed; The continuous fiber material at one end of the continuous fiber matrix material roll is sequentially passed through the continuous fiber matrix impregnation device, the continuous gel curing device, the continuous aging device, the continuous modification device, the continuous drying device and connected to the second transmission shaft of the continuous winding device; adding the prepared precursor solution into a continuous fiber matrix impregnation device; The continuous aging device includes a spray device; Turning on the spraying device to spray the aging solution through the spraying device toward the continuous fiber material passing through the continuous aging device; The continuous modification device comprises a modification solution container, and the modification solution is added to the modification solution storage container; The continuous drying device includes a box body and a heating device inside the box body. When the heating device is turned on, the temperature inside the box body is 40-80°C; the drying time is 15-60 minutes; The continuous unwinding device and the power device of the continuous unwinding device are turned on to realize the same-direction rotation of the first transmission shaft and the second transmission shaft; the continuous fiber material wrapped around the base material roll on the first transmission shaft is impregnated with a precursor solution, gel-cured, gel-aged, modified with a modifying solution, and dried, and then wound around the second transmission shaft to obtain a continuous aerogel composite material roll wrapped around the second transmission shaft; During the process of passing the continuous fiber material through the continuous aging device, the length L1 of the continuous fiber material passing through the continuous aging device can be adjusted; During the process of passing the continuous fiber material through the continuous modification device, the length L2 of the continuous fiber material passing through the continuous modification device can be adjusted; L1:L2 is 1:(1-2.2).

2. The continuous production process of aerogel composite materials according to claim 1, characterized in that: A precursor solution is prepared by a precursor solution preparation device, wherein the precursor solution preparation device comprises a solvent storage tank, a silicon source storage tank, a catalyst storage tank, a first mixed solution preparation tank, a second mixed solution preparation tank, a precursor preparation tank, and a precursor slow-filling tank; The silicon source in the silicon source storage tank and the solvent in the solvent storage tank are added to the first mixed solution preparation tank at a mass ratio of (0.3-0.6):1 to obtain a first mixed solution, and the catalyst in the catalyst storage tank and the solvent in the solvent storage tank are added to the second mixed solution preparation tank at a mass ratio of (0.15-0.3):1 to obtain a second mixed solution; The first mixed solution and the second mixed solution are added into the precursor preparation tank in a mass ratio of (3-5):(5-7) to mix and obtain a precursor solution, and all the prepared precursor solutions are transferred into the precursor slow-filling tank; and then the precursor solution is prepared by the precursor preparation tank; The precursor solution in the precursor slow-filling tank is used to replenish the precursor solution in the continuous fiber matrix impregnation device; The solvent is deionized water; the silicon source includes water glass or silica sol; and the catalyst includes one of dilute hydrochloric acid, dilute sulfuric acid, acetic acid, oxalic acid and citric acid.

3. The continuous production process of aerogel composite materials according to claim 1, characterized in that: The process of the continuous fiber material passing through the continuous fiber matrix impregnation device comprises the following steps: The continuous fiber matrix impregnation device comprises an impregnation solution container and an impregnation transmission device; The impregnation transmission device comprises a first impregnation support roller, a plurality of second impregnation support rollers, a plurality of first impregnation pressing rollers, a second impregnation pressing roller, and a third impregnation support roller; the second impregnation support roller is arranged opposite to the first impregnation pressing roller; the plurality of second impregnation support rollers, the plurality of first impregnation pressing rollers, and the second impregnation pressing roller are located inside the impregnation solution container; Passing the continuous fiber material sequentially from above the first impregnation support roller, between the second impregnation support roller and the first impregnation press roller, below the second impregnation press roller, and above the third impregnation support roller; The continuous fiber material is located inside the impregnation solution container between a first impregnation press roller and a second impregnation press roller which are located inside the impregnation solution container and close to the continuous unwinding device.

4. The continuous production process of aerogel composite materials according to claim 1, characterized in that: The process of the continuous fiber material passing through the continuous gel curing device comprises the following steps: The continuous gel curing device comprises a continuous curing support frame and a curing conveyor belt rotatably connected to the continuous curing support frame; The continuous fiber material passing through the continuous fiber matrix impregnation device is laid on the surface of the curing conveyor belt located above the continuous curing support frame; The linear speed of the curing conveyor belt is the same as the linear speed of the continuous fiber material.

5. The continuous production process of aerogel composite materials according to claim 1, characterized in that: The continuous aging device comprises a lifting device, a first aging device, a second aging device, a third aging device, a first aging recovery container, a second aging recovery container, and a third aging recovery container; The lifting device includes a lifting bracket that is 60-90 degrees to the ground, a lifting conveyor belt rotatably connected to the lifting bracket, a first lifting roller, a second lifting roller, and a first lifting support roller; The first aging device comprises a first aging bracket vertically arranged on the ground, a first aging conveyor belt transmission-connected to the first aging bracket, a first spray device, a first aging roller A, a first aging support roller A, and a first aging roller B; The second aging device comprises a second aging bracket vertically arranged on the ground, a first aging conveyor belt second injection device transmission-connected to the second aging bracket, a second aging roller A, a second aging support roller A, and a second aging roller B; The third aging device includes a third aging bracket vertically arranged on the ground, a first aging conveyor belt third injection device transmission-connected to the third aging bracket, a third aging pressure roller A, a third aging support roller A, and a third aging pressure roller B; The second lifting roller is set at a height lower than the first lifting roller, and the second lifting roller is rotatably connected to the first aging recovery container; The first aging roller A is set at a height lower than the first lifting roller and higher than the first aging roller B. The first aging roller A is rotatably connected to the first aging recovery container. The second lifting roller and the first aging roller A are located in the first aging recovery container. The second aging roller A is set at a height lower than the first aging roller A and higher than the second aging roller B. The first aging roller B and the second aging roller A are rotatably connected to the second aging recovery container. The first aging roller B and the second aging roller A are located in the second aging recovery container. The third aging roller A is set at a height lower than the second aging roller A. The second aging roller B and the third aging roller A are rotatably connected to the third aging recovery container. The second aging roller B and the third aging roller A are located in the third aging recovery container.

6. The continuous production process of aerogel composite materials according to claim 5, characterized in that: The process of the continuous fiber material passing through the continuous aging device comprises the following steps: The continuous fiber material passing through the continuous curing device is sequentially passed from under the first lifting roller, under the first lifting support roller, under the second lifting roller, under the first aging roller A, above the first aging support roller A, under the first aging roller B, under the second aging roller A, above the second aging support roller A, under the second aging roller B, under the third aging roller A, above the third aging support roller A, and under the third aging roller B; and / or The process of spraying the aging solution through the spraying device onto the continuous fiber material passing through the continuous aging device comprises the following steps: Open the first injection device, the second injection device, and the third injection device in sequence; The first spraying device sprays the first aging solution onto the continuous fiber material between the first lifting support roller and the second lifting pressure roller, and onto the continuous fiber material between the first aging pressure roller A and the first aging support roller A; The continuous fiber material between the second lifting roller and the first aging roller A is located in a first aging recovery container, and the first aging recovery container contains a first aging solution; The second spraying device sprays the second aging solution onto the continuous fiber material between the first aging support roller A and the first aging pressure roller B, and onto the continuous fiber material between the second aging pressure roller A and the second aging support roller A; The continuous fiber material between the first aging roller B and the second aging roller A is located in a second aging recovery container, and the second aging recovery container contains a second aging solution; The third spraying device sprays the third aging solution onto the continuous fiber material between the second aging support roller A and the second aging pressure roller B, and onto the continuous fiber material between the third aging pressure roller A and the third aging support roller A; The continuous fiber material between the second aging roller B and the third aging roller A is located in a second aging recovery container, and the third aging recovery container contains a third aging solution.

7. The continuous production process of aerogel composite materials according to claim 1, characterized in that: The process of the continuous fiber material passing through the continuous modification device comprises the following steps: The continuous modification device further comprises a first modified pressure roller, a first modified support roller, a second modified support roller, n third modified support rollers, and m fourth modified support rollers; n≥3, m≥3; The modifying solution container is provided with a modifying solution; The first modification support roller is located outside the modification solution container, higher than the modification solution container, and above one end of the modification solution container close to the continuous modification device or between the modification solution container and the continuous modification device; The second modified support roller is located outside the modified solution container, higher than the modified solution container, and located above one end of the modified solution container close to the continuous drying device or between the modified solution container and the continuous drying device; The n third modified support rollers are all located inside the modified solution container and close to one side of the continuous aging device, and the n third modified support rollers are vertically arranged from top to bottom; The m fourth modified support rollers are all located inside the modified solution container near the continuous drying device, and the n third modified support rollers are vertically arranged from top to bottom; The first modified pressing roller is located inside the modified solution container, and the fourth modified supporting roller is located inside the modified solution container on one side close to the drying device, and the height of the first modified pressing roller is not higher than the lowest height; The continuous fiber material passing through the continuous aging device passes over the first modified support roller in sequence, then passes around the third modified support roller and the fourth modified support roller alternately from top to bottom and from left to right, then passes under the first modified pressing roller and over the second modified support roller; The continuous fiber material between the third modification support roller with the highest setting position and the second modification support roller is located in the modification solution container.

8. The continuous production process of aerogel composite materials according to claim 1, characterized in that: The process of connecting the continuous drying device to the second transmission shaft of the continuous winding device comprises the following steps: The continuous drying device also includes a first drying roller, a second drying roller, and a drying conveyor belt; The first drying roller and the second drying roller are located outside the box; The first drying roller is located between the continuous modifying device and the continuous drying device, and the height of the first drying roller is the same as the height of the inlet end of the drying conveyor belt; The second drying roller is located between the continuous drying device and the continuous winding device, and the height of the second drying roller is the same as the outlet end of the drying conveyor belt or is located between the outlet end of the drying conveyor belt and the highest point of the continuous winding device; The continuous fiber material passing through the continuous modification device is sequentially passed under the first drying roller, and then laid on the surface of the drying conveyor belt, and then connected to the second rotating shaft of the continuous winding device under the second drying roller; The continuous fiber material laid on the surface of the dry conveyor belt is located inside the box.

9. The continuous production process of aerogel composite materials according to claim 1, characterized in that: Also includes: Confirm the linear velocity of the continuous fiber material: V1, the angular velocity of the first transmission shaft: ω1, the angular velocity of the second transmission shaft: ω2, the linear velocity of the curing conveyor belt: V2, the linear velocity of the lifting conveyor belt: V3, the linear velocity of the first aging conveyor belt: V4, the linear velocity of the second aging conveyor belt: V5, the linear velocity of the third aging conveyor belt: V6, the linear velocity of the drying conveyor belt: V7, the length L1 of the continuous fiber material passing through the continuous aging device, and the length L2 of the continuous fiber material passing through the continuous modifying device; The specific steps include: According to the drying time T=0.25-1h of the continuous fiber material after impregnation, curing, aging and modification, and the continuous drying equipment box L3, the linear speed of the continuous fiber material in the production process is calculated by formula 1; Formula 1: V1 = L3 / T; ω1=V1 / R1,ω2=V1 / R2; R1 is the real-time radius of the continuous fiber matrix material roll connected to the continuous unwinding device at the beginning of production and during the production process; R2 is the real-time radius of the continuous aerogel composite roll connected to the continuous winding device at the beginning of production and during production; V1=V2=V3=V4=V5=V6; L1=V1×t1, t1 is the aging time of continuous fiber material, which is 12-24h; L2=V1×t2, t2 is the modification time of the continuous fiber material, 12-52.8h.

10. The continuous production process of aerogel composite materials according to claim 5, characterized in that: The method for adjusting the length L1 of the continuous fiber material passing through the continuous aging device comprises the following steps: L1 is determined by the linear velocity V1 of the continuous fiber material and the aging time t1 of the continuous fiber material; L1 = V1 × t1; Then, L1 adjustment is achieved by adjusting the process of continuous fiber material passing through the continuous aging device; According to the relationship between the length LA of the continuous fiber material between the first lifting support roller and the first aged support roller A, the length LB of the continuous fiber material between the first aged support roller A and the second aged support roller A, the length LC of the continuous fiber material between the second aged support roller A and the third aged support roller B and L1, whether the continuous fiber material passes under the second aged pressing roller A and / or under the third aged pressing roller A is adjusted to achieve the adjustment of L1; and / or The method for adjusting the length L2 of the continuous fiber material passing through the continuous modification device comprises the following steps: According to the linear velocity V1 of the continuous fiber material and the modification time t2 of the continuous fiber material, L2 is determined; L2 = V1 × t2; Then, L2 adjustment is achieved by adjusting the process of continuous fiber material passing through the continuous modification device; According to the relationship between the axial distance d between the adjacent third modified support roller and the fourth modified support roller and L2, the number and amount of the continuous fiber material bypassing the third modified support roller and the fourth modified support roller are adjusted to achieve the adjustment of L1.

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