Continuous production process for aerogel composite material

Abstract

A continuous production process for an aerogel composite material, comprising the following steps: preparing a precursor solution; sleeving and fixing a continuous fiber matrix material roll (2) on the outside of a first transmission shaft of a continuous unwinding device (1); and sequentially passing the continuous fiber material at one end of the continuous fiber matrix material roll (2) through a continuous fiber matrix impregnation device, a continuous gel curing device, a continuous aging device (29), a continuous modification device (30), and a continuous drying device to be connected to a second transmission shaft of a continuous winding device (40). Continuous production is realized, different process adjustments can be adapted, and the production efficiency is improved.

Description

Aerogel composite continuous production process TECHNICAL FIELD

[0001] The present application relates to the field of aerogel composite production, in particular to the field of aerogel composite continuous production process. BACKGROUND

[0002] The aerogel composite has excellent heat insulation performance, high temperature resistance, and good strength;

[0003] The large-scale industrial production process of the aerogel composite is long and has many procedures, and needs to go through the procedures of fiber matrix impregnation, gel solidification, aging, and drying. Traditional industrial production adopts a segmented and intermittent production process, so the production efficiency is low and the production cost is high. In the actual production process, the process time of each procedure is different, and the product model and index produced during production are not completely the same.

[0004] Therefore, how to realize continuous production and adapt to different process adjustments to improve production efficiency has become a difficult problem to be solved in the field.

[0005] SUMMARY

[0006] The purpose of the present application is to provide an aerogel composite continuous production process, which realizes continuous production and can adapt to different process adjustments to improve production efficiency.

[0007] The present application provides an aerogel composite continuous production process, comprising the following steps: preparing a precursor solution;

[0008] The continuous fiber matrix material roll is sleeved outside the first transmission shaft of the continuous unwinding device and is fixed;

[0009] The continuous fiber material at one end of the continuous fiber matrix material roll is sequentially threaded through the continuous fiber matrix impregnation device, the continuous gel solidification device, the continuous aging device, the continuous modification device, the continuous drying device, and the second transmission shaft of the continuous winding device;

[0010] The prepared precursor solution is added to the continuous fiber matrix impregnation device;

[0011] The continuous aging device comprises a spraying device; the spraying device is opened, and the aging solution is sprayed through the spraying device to the continuous fiber material passing through the continuous aging device;

[0012] The continuous modification device comprises a modification solution container, and a modification solution is added to the modification solution storage container;

[0013] The continuous drying device comprises a box body and a heating device in the box body, the heating device is opened, the heating mode is microwave heating, the drying time can be effectively shortened, the temperature in the box body is 40-80 DEG C, and the drying time is 15-60 minutes.

[0014] The continuous unwinding device and the power device of the continuous unwinding device are opened, the first transmission shaft and the second transmission shaft are driven to rotate in the same direction, the continuous fiber material of the base material roll sleeved on the first transmission shaft is subjected to impregnation of a precursor solution, gel curing, gel aging, modification of a modification solution and drying, and then is wound on the second transmission shaft to obtain a continuous aerogel composite material roll sleeved on the second transmission shaft.

[0015] During the process of passing the continuous aging device, the length L1 of the continuous fiber material passing through the continuous aging device can be adjusted.

[0016] During the process of passing the continuous modification device, the length L2 of the continuous fiber material passing through the continuous modification device can be adjusted, and L1:L2 is 1:(1-2.2); preferably, the heating mode is microwave heating; further preferably, the linear speed of the continuous fiber base material roll during unwinding of the continuous unwinding device is greater than or equal to the linear speed of the continuous aerogel composite material roll during unwinding of the continuous winding device.

[0017] The beneficial effects of the present application relative to the prior art are that, by sequentially passing the continuous fiber material at one end of the continuous fiber base material roll through the continuous fiber base impregnation device, the continuous gel curing device, the continuous aging device, the continuous modification device, the continuous drying device and the second transmission shaft of the continuous winding device, the continuous fiber base material is sequentially subjected to impregnation of a precursor solution, continuous curing, continuous aging, continuous modification and continuous drying, and finally realizes continuous production.

[0018] The prepared precursor solution is added to the continuous fiber base impregnation device, the continuous fiber material is continuously impregnated in the precursor solution, and the impregnation time of the continuous fiber material is realized by the time of passing through the storage precursor solution container.

[0019] By opening the spraying device when the continuous fiber material passes through the continuous aging device, the aging solution is sprayed to the continuous fiber material passing through the continuous aging device through the spraying device, the continuous aging of the continuous fiber material is realized, and the route of the continuous fiber material can be set according to the space of the production environment at the same time, so that the route length is adjusted without affecting the length of the occupied factory building, the continuous aging time is adjusted without changing the linear speed of the continuous fiber material, and different types and different performance products can be produced by using the same set of continuous production equipment.

[0020] The modification of the continuous fiber material is achieved by adding the modified solution to the modified solution storage container, when the continuous fiber material passes through the modified solution, the time of the continuous fiber material passing through the modified solution is the modification time, by setting or changing the route of the continuous fiber when passing through the modified solution, the length of the route passing through the modified solution is changed, so as to change the modification time of the continuous fiber material without changing the linear speed of the continuous fiber material;

[0021] The continuous drying device includes a box body and a heating device in the box body, the heating device is turned on, and the time of the continuous fiber material passing through the inside of the box body of the continuous drying device is the drying time; Since the process adopts the modification process after aging, the drying of the modified continuous fiber material can be carried out at normal pressure, so that the drying can be realized without the continuous drying device and without complete sealing;

[0022] 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 are rotated in the same direction, the movement of the continuous fiber material is realized, and the continuous fiber material will not be broken or damaged due to long-time tension;

[0023] By preferably the linear speed of the continuous fiber base material roll when unwound by the continuous unwinding device is greater than or equal to the linear speed of the continuous aerogel composite material roll when unwound by the continuous winding device, it is further beneficial to avoid the continuous fiber material from being broken or damaged due to long-time tension;

[0024] The length L1 of the continuous fiber material passing through the continuous aging device is adjustable, and the length L2 of the continuous fiber material passing through the continuous modification device is adjustable, so as to change the aging time and the modification time of the continuous fiber material without changing the linear speed of the continuous fiber material;

[0025] By L1:L2 being 1:(1-2.2), the ratio of the aging time and the modification time of the continuous fiber material in the continuous production process is L1:L2 being 1:(1-2.2).

[0026] Further, the precursor solution is prepared by a precursor solution preparation device, 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 storage tank, and a precursor buffer tank;

[0027] The silicon source in the silicon source storage tank and the solvent in the solvent storage tank are mixed in 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 mixed in the second mixed solution preparation tank at a mass ratio of (0.15-0.3):1 to obtain a second mixed solution;

[0028] The first mixed solution and the second mixed solution are added into a precursor preparation tank in a mass ratio of (3-5):(5-7) to obtain a precursor solution, and the prepared precursor solution is transferred into a precursor buffer tank;

[0029] The precursor solution in the precursor buffer tank is used to supplement the precursor solution to the continuous fiber substrate impregnation device;

[0030] 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.

[0031] The above step has the beneficial effect of realizing the preparation of the precursor solution, and by transferring the prepared precursor solution into the precursor buffer tank, the precursor solution can be added to the continuous fiber substrate impregnation device during the preparation process.

[0032] Further, the process of the continuous fiber material passing through the continuous fiber substrate impregnation device includes the following steps:

[0033] The continuous fiber substrate impregnation device includes an impregnation solution container and an impregnation transmission device;

[0034] The impregnation transmission device includes a first impregnation support roller, a plurality of second impregnation support rollers, a plurality of first impregnation pressure rollers, a second impregnation pressure roller and a third impregnation support roller; the second impregnation support rollers are arranged opposite to the first impregnation pressure rollers; the plurality of second impregnation support rollers, the plurality of first impregnation pressure rollers and the second impregnation pressure roller are located inside the impregnation solution container.

[0035] The continuous fiber material passes through the first impregnation support roller, the space between the second impregnation support roller and the first impregnation pressure roller, the space below the second impregnation pressure roller and the third impregnation support roller in sequence.

[0036] The continuous fiber material between the first impregnation pressure roller and the second impregnation pressure roller located inside the impregnation solution container is located inside the impregnation solution container.

[0037] The above step has the beneficial effect of realizing that the continuous fiber material between the first impregnation pressure roller and the second impregnation pressure 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 pressure roller and the second impregnation pressure roller, and the movement route of the continuous fiber is lowered by passing through the space between the second impregnation support roller and the first impregnation pressure roller, so that the precursor solution can impregnate the continuous fiber, and the problem of the continuous fiber deviating from the set movement trajectory when the continuous fiber is excessively relaxed is avoided; the third impregnation support roller is beneficial to remove the excess precursor solution on the surface of the continuous fiber.

[0038] Further, the process of the continuous fiber material passing through the continuous gel curing device comprises the following steps:

[0039] The continuous gel curing device comprises a continuous curing support frame and a curing conveyor belt rotationally connected with the continuous curing support frame;

[0040] The continuous fiber material passing through the continuous fiber matrix impregnation device is laid on the surface of the curing conveyor belt above the continuous curing support frame;

[0041] The linear speed of the curing conveyor belt is the same as that of the continuous fiber material; preferably, the curing conveyor belt is a conveying 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, the first groove is provided with a second groove on both sides, and the lowest point of the second groove is higher than that of the first groove.

[0042] The beneficial effects of the above step are that the continuous fiber material is moved on the conveying mesh belt, and aging is performed during the movement. By making the linear speed of the curing conveyor belt the same as that of the continuous fiber material, the problem of the aging solution impregnated into the continuous fiber material overflowing due to friction between the continuous fiber material and the curing conveyor belt is avoided, which is beneficial to improving the impregnation effect of the precursor solution on the continuous fiber material. By preferably providing the curing conveyor belt 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, a small amount of precursor solution exuded during the curing process will not be lost, but will still adhere to the surface of the continuous fiber material and be cured, avoiding the loss of the impregnated precursor solution during the curing process.

[0043] Further, 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;

[0044] The lifting device comprises a lifting support frame at an angle of 60-90° with the ground, a lifting conveyor belt rotationally connected with the lifting support frame, a first lifting press roller, a second lifting press roller, and a first lifting support roller;

[0045] The first aging device comprises a first aging support frame vertically arranged with the ground, a first aging conveyor belt drivingly connected with the first aging support frame, a first spraying device, a first aging press roller A, a first aging support roller A, and a first aging press roller B;

[0046] The second aging device comprises a second aging support vertically arranged with the ground, a first aging conveying belt second spraying device in driving connection with the second aging support, a second aging compression roller A, a second aging support roller A, and a second aging compression roller B;

[0047] The third aging device comprises a third aging support vertically arranged with the ground, a first aging conveying belt third spraying device in driving connection with the third aging support, a third aging compression roller A, a third aging support roller A, and a third aging compression roller B;

[0048] The second lifting compression roller is arranged at a height lower than the first lifting compression roller and is in rotational connection with the first aging recovery container;

[0049] The first aging compression roller A is arranged at a height lower than the first lifting compression roller and higher than the first aging compression roller B, is in rotational connection with the first aging recovery container, and is located in the first aging recovery container together with the second lifting compression roller;

[0050] The second aging compression roller A is arranged at a height lower than the first aging compression roller A and higher than the second aging compression roller B, is in rotational connection with the second aging recovery container, and is located in the second aging recovery container together with the first aging compression roller B;

[0051] The third aging compression roller A is arranged at a height lower than the second aging compression roller A, is in rotational connection with the third aging recovery container, and is located in the third aging recovery container together with the second aging compression roller B.

[0052] The continuous aging device comprises a lifting device, which can raise the solidified continuous fiber material and then connect it with the continuous aging device, thereby greatly increasing the movement route of the continuous fiber material in the continuous aging device without changing the length of the continuous aging device in the horizontal direction, and thereby solving the problem of long aging time of the continuous fiber material without changing the linear velocity of the continuous fiber material;

[0053] The first aging device, the second aging device, and the third aging device can solve the problem of long aging time of the continuous fiber material without changing the linear velocity of the continuous fiber material, and the number of times that the continuous fiber material passes through the first aging device, the second aging device, and the third aging device can be selected to adjust the length of the movement route of the continuous fiber material in the continuous aging device;

[0054] The lifting device comprises a lifting support at an angle of 60-90° with the ground, and a lifting conveyor belt connected to the lifting support, which provides the power for the continuous conveyor belt and supports the continuous fiber material, thereby preventing the continuous fiber material from being broken or damaged during the lifting process;

[0055] The first aging device comprises a first aging support vertically arranged on the ground, a first aging conveyor belt connected to the first aging support, a first spraying device, a first aging compression roller A, a first aging support roller A, and a first aging compression roller B, which provides a long movement path for the continuous fiber material in the first aging device, thereby increasing the aging time.

[0056] The second lifting compression roller is arranged lower than the first lifting compression roller, the first aging compression roller A is arranged lower than the first lifting compression roller and higher than the first aging compression roller B, the second aging compression roller A is arranged lower than the first aging compression roller A and higher than the second aging compression roller B, and the third aging compression roller A is arranged lower than the second aging compression roller A, thereby providing space positions for the first aging recovery container, the second aging recovery container, and the third aging recovery container, and realizing that the second lifting compression roller and the first aging compression roller A are located in the first aging recovery container, the first aging compression roller B and the second aging compression roller A are located in the second aging recovery container, and the second aging compression roller B and the third aging compression roller A are located in the third aging recovery container, thereby realizing that the first aging recovery container, the second aging recovery container, and the third aging recovery container recover the aging solution sprayed by the first spraying device, the second spraying device, and the third spraying device, respectively, and that the continuous fiber material in the aging recovery containers is aged, thereby improving the aging efficiency.

[0057] Further, the process of the continuous fiber material passing through the continuous aging device comprises the following steps:

[0058] The continuous fiber material passing through the continuous solidification device passes under the first lifting compression roller, under the first lifting support roller, under the second lifting compression roller, under the first aging compression roller A, above the first aging support roller A, under the first aging compression roller B, under the second aging compression roller A, above the second aging support roller A, under the second aging compression roller B, under the third aging compression roller A, above the third aging support roller A, and under the third aging compression roller B.

[0059] And / or

[0060] The process of spraying the aging solution by the spraying device to the continuous fiber material passing through the continuous aging device comprises the following steps:

[0061] The first spraying device, the second spraying device, and the third spraying device are opened in sequence.

[0062] The first spraying device sprays a first aging solution to the continuous fiber material between the first lifting support roller and the second lifting compression roller, the continuous fiber material between the first aging compression roller A and the first aging support roller A;

[0063] The continuous fiber material between the second lifting compression roller and the first aging compression roller A is located in the first aging recovery container containing the first aging solution;

[0064] The second spraying device sprays a second aging solution to the continuous fiber material between the first aging support roller A and the first aging compression roller B, and the continuous fiber material between the second aging compression roller A and the second aging support roller A;

[0065] The continuous fiber material between the first aging compression roller B and the second aging compression roller A is located in the second aging recovery container containing the second aging solution;

[0066] The third spraying device sprays a third aging solution to the continuous fiber material between the second aging support roller A and the second aging compression roller B, and the continuous fiber material between the third aging compression roller A and the third aging support roller A;

[0067] The continuous fiber material between the second aging compression roller B and the third aging compression roller A is located in the second aging recovery container containing the 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 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).

[0068] The above beneficial effects have the advantages that the continuous fiber material continuously passes 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 can be adjusted; the first aging solution is used first to age the continuous fiber material by the first spraying device, then the second aging solution is used first to age the continuous fiber material by the second spraying device, and finally the third aging solution is used first to age the continuous fiber material by the third spraying device;

[0069] 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 in the cured gel; and the third aging solution includes deionized water and hexamethyldisiloxane, which can further remove impurities in the cured gel, and hexamethyldisiloxane is used to replace water in the cured gel, which is beneficial to subsequent modification of the cured gel.

[0070] Further, the process of the continuous fiber material passing through the continuous modification device comprises the following steps:

[0071] The continuous modification device further comprises a first modification pressure roller, a first modification support roller, a second modification support roller, n third modification support rollers, and m fourth modification support rollers; n≥3, m≥3.

[0072] The modification solution container is provided with a modification solution.

[0073] The first modification support roller is located outside the modification solution container, higher than the modification solution container, above the modification solution container near one end of the continuous modification device or between the modification solution container and the continuous modification device.

[0074] The second modification support roller is located outside the modification solution container, higher than the modification solution container, above the modification solution container near one end of the continuous modification device or between the modification solution container and the continuous modification device.

[0075] The n third modification support rollers are located inside the modification solution container near one side of the continuous modification device, and the n third modification support rollers are vertically arranged from top to bottom.

[0076] The m fourth modification support rollers are located inside the modification solution container near one side of the continuous modification device, and the n third modification support rollers are vertically arranged from top to bottom.

[0077] The first modification pressure roller is located inside the modification solution container, near one side of the continuous modification device, and the height of the first modification pressure roller is not higher than the lowest height of the fourth modification support roller.

[0078] The continuous fiber material passing through the continuous modification device is sequentially passed above the first modification support roller, then alternately wound around the third modification support roller, the fourth modification support roller from top to bottom and from left to right, and then passed below the first modification pressure roller and above the second modification support roller.

[0079] 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; preferably, the modification solution comprises trimethylchlorosilane or hexamethyldisilazane, and further preferably, the temperature of the modification solution is 60-80℃.

[0080] The beneficial effect of the above step is that the continuous fiber material is lifted from the top of the modified solution container and then can alternately pass through the third modified support roller and the fourth modified support roller, and then alternately pass through from top to bottom and from left to right, realizing the continuous and orderly movement of the continuous fiber material in the modified solution in the modified solution container, and the modification is carried out during the movement; the route of the continuous fiber material in the modified solution is long, thereby realizing long modification time without changing the linear speed of the continuous fiber material;

[0081] The first modified compression roller is used to realize that the continuous fiber material can orderly come out of the modified solution container after alternately passing through the third modified support roller and the fourth modified support roller;

[0082] Meanwhile, the number of the continuous fiber material passing through the third modified support roller and the fourth modified support roller can be adjusted, and the route length of the continuous fiber material in the modified solution container is adjusted, thereby adjusting the movement time of the continuous fiber material in the modified solution without changing the linear speed of the continuous fiber material, so as to realize the adjustment of the modification time according to different models and performance products;

[0083] The modified solution includes trimethylchlorosilane or hexamethyldisilazane, which is beneficial to realize the rapid modification of the inside of the cured gel after decomposition, that is, trimethylchlorosilane or hexamethyldisilazane is combined with the inside of the cured gel after decomposition, and the active hexamethyldisiloxane entering the inside of the cured gel during aging is combined with the inside of the cured gel, thereby improving the modification efficiency and realizing uniform modification of the inside of the cured gel, avoiding that the modification of the cured gel is faster near the surface and slower or insufficient in the inside during the modification process, thereby leading to a long subsequent drying time.

[0084] Further, the process of connecting the second transmission shaft of the continuous drying device and the continuous winding device includes the following steps:

[0085] The continuous drying device further includes a first drying compression roller, a second drying compression roller, and a drying conveying belt;

[0086] The first drying compression roller and the second drying compression roller are located outside the box body;

[0087] The first drying compression roller is located between the continuous modification device and the continuous drying device, and the height of the first drying compression roller is the same as the height of the inlet end of the drying conveying belt;

[0088] The second drying compression roller is located between the continuous drying device and the continuous winding device, and the height of the second drying compression roller is the same as the outlet end of the drying conveying belt or is located between the outlet end of the drying conveying belt and the highest point of the continuous winding device;

[0089] The continuous fiber material passing through the continuous modification device is sequentially passed under the first drying compression roller, then laid on the surface of the drying conveying belt, and then passed under the second drying compression roller connected to the second rotating shaft of the continuous winding device;

[0090] The continuous fiber material laid on the surface of the drying conveying belt is located inside the box; preferably, the linear speed of the drying conveying belt is the same as that of the continuous fiber material.

[0091] The beneficial effects of the above step are that the modified continuous fiber material is dried during movement on the drying conveying belt in the box; and the continuous fiber material is supported by the drying conveying belt without relative displacement, avoiding loss or breakage of the modified continuous fiber material;

[0092] The height of the first drying compression roller is the same as that of the inlet end of the drying conveying belt, which further helps to avoid loss or breakage of the continuous fiber material;

[0093] The second drying compression roller is located between the continuous drying device and the continuous winding device, and the height of the second drying compression roller is the same as that of the outlet end of the drying conveying belt or is located between the outlet end of the drying conveying belt and the highest point of the continuous winding device, which realizes the connection of the dried continuous fiber material with the continuous winding device and further helps to avoid loss or breakage of the continuous fiber material.

[0094] Further, the continuous production process of aerogel composite material further includes confirming the linear speed of the continuous fiber material: V1, the angular speed of the first transmission shaft: ω1, the angular speed of the second transmission shaft: ω2, the linear speed of the curing conveying belt: V2, the linear speed of the lifting conveying belt: V3, the linear speed of the first aging conveying belt: V4, the linear speed of the second aging conveying belt: V5, the linear speed of the third aging conveying belt: V6, the linear speed of the drying conveying belt: V7, the length of the continuous fiber material passing through the continuous aging device L1, and the length of the continuous fiber material passing through the continuous drying device L2; specifically including the following steps:

[0095] According to the drying time T=0.25-1h of the continuous fiber material after impregnation, curing, aging, and modification, and the length L3 of the continuous drying equipment box, the linear speed of the continuous fiber material in the production process is calculated by Formula One;

[0096] Formula One: V1=L3 / T;

[0097] ω1=V1 / R1, ω2=V1 / R2;

[0098] R1 is the real-time radius of the continuous fiber substrate material roll connected to the continuous winding device at the beginning of production and during production;

[0099] R2 is the real-time radius of the continuous aerogel composite roll connected by the continuous winding device at the beginning of production and during production;

[0100] V1 = V2 = V3 = V4 = V5 = V6;

[0101] L1 = V1 x t1, t1 is the aging time of the continuous fiber material, which is 12-24h;

[0102] L2 = V1 x t2, t2 is the modification time of the continuous fiber material, which is 12-52.8h.

[0103] The beneficial effects of the previous step are realized to confirm the continuous production process parameters of the aerogel composite, to realize the continuous passing of the continuous fiber material through impregnation, curing, aging, modification, drying, and then winding on the second rotating shaft to form a continuous aerogel composite roll; and the linear speed of the continuous fiber material at each stage is the same, but the process treatment time after each stage is different, thereby meeting the production process requirements and obtaining qualified aerogel composite.

[0104] Further, the continuous fiber material length L1 adjustment method through the continuous aging device comprises the following steps:

[0105] L1 is confirmed by the linear speed V1 of the continuous fiber material movement and the aging time t1 of the continuous fiber material; L1 = V1 x t1;

[0106] Then, L1 adjustment is realized by adjusting the process of the continuous fiber material passing through the continuous aging device;

[0107] According to the size relationship between the continuous fiber material length LA between the first lifting support roller and the first aging support roller A, the continuous fiber material length LB between the first aging support roller A and the second aging support roller A, the continuous fiber material length LC between the second aging support roller A and the third aging support roller B, and L1, it is adjusted whether the continuous fiber material passes under the second aging compression roller A and / or under the third aging compression roller A to realize L1 adjustment;

[0108] And / or

[0109] The continuous fiber material length L2 adjustment method through the continuous modification device comprises the following steps:

[0110] L2 is confirmed by the linear speed V1 of the continuous fiber material movement and the modification time t2 of the continuous fiber material; L2 = V1 x t2;

[0111] Then, L2 adjustment is realized by adjusting the process of the continuous fiber material passing through the continuous modification device;

[0112] According to the size relationship between the shaft spacing d of the adjacent third modified support roller and the fourth modified support roller and L2, the number of continuous fiber material passing through the third modified support roller and the fourth modified support roller is adjusted, and the adjustment of L1 is realized.

[0113] The beneficial effects of the above step are that the length L1 adjustment of the continuous fiber material passing through the continuous aging device and the length L2 adjustment method of the continuous fiber material passing through the continuous modification device are realized, so that the aging time and the modification time of the continuous fiber material are changed without changing the linear speed of the continuous fiber material; thus, different process parameters required by different models and performances of products can still be produced by the same set of equipment (therefore, the longest time required in each stage of the entire production process is the modification time, and then the aging time); and the ratio of the aging time to the modification time of the continuous fiber material can be controlled to be 1:(1-2.2), and the quality of the final aerogel composite material is improved. BRIEF DESCRIPTION OF DRAWINGS

[0114] FIG. 1 is a structural schematic diagram of a winding device.

[0115] The marks shown in the drawings are as follows: 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 compression roller; 7, second impregnation compression roller; 8, third impregnation support roller; 9, solidification conveying belt; 10, lifting conveying belt; 11, first lifting compression roller; 12, second lifting compression roller; 13, first lifting support roller; 14, first spraying device; 15, first aging compression roller A; 16, first aging support roller A; 17, first aging compression roller B; 18, first aging conveying belt; 19, second spraying device; 20, second aging compression roller A; 21, second aging support roller A; 22, second aging compression roller B; 23, second aging conveying belt; 24, third aging compression roller A; 25, third aging support roller A; 26, third aging compression roller B; 27, third spraying device; 28, third aging conveying belt; 29, continuous aging device; 30, continuous modification device; 31, first modification support roller; 32, third modification support roller; 33, fourth modification support roller; 34, first modification compression roller; 35, second modification support roller; 36, first drying compression roller; 37, drying conveying belt; 38, box body; 39, second drying compression 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 storage tank; 48, precursor buffer tank. DETAILED DESCRIPTION

[0116] For better understanding of the technical scheme of the present application, the present application is further described below in conjunction with specific examples and drawings.

[0117] Example 1

[0118] The present embodiment provides a continuous production process of aerogel composite material, comprising the following steps: preparing a precursor solution;

[0119] The continuous fiber matrix material roll 2 is sleeved outside the first transmission shaft of the continuous unwinding device 1 and fixed;

[0120] The continuous fiber material at one end of the continuous fiber matrix material roll 2 is sequentially threaded 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 the second transmission shaft of the second drying press roller 39;

[0121] The prepared precursor solution is added to the continuous fiber matrix impregnation device; the precursor solution is prepared by a precursor solution preparation device, which comprises 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 storage tank 47, and a precursor buffer tank 48;

[0122] The silicon source in the silicon source storage tank 43 and the solvent in the solvent storage tank 42 are mixed in the first mixed solution preparation tank 45 at a mass ratio of 0.45:1 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 mixed in the second mixed solution preparation tank 46 at a mass ratio of 0.28:1 to obtain a second mixed solution;

[0123] The first mixed solution and the second mixed solution are mixed in the precursor preparation storage tank 47 at a mass ratio of 4:6 to obtain a precursor solution, and the prepared precursor solution is all transferred to the precursor buffer tank 48; then the precursor solution is prepared by the precursor preparation tank again;

[0124] The precursor solution in the precursor buffer tank 48 is used to supplement the precursor solution to the continuous fiber matrix impregnation device;

[0125] The solvent is deionized water; the silicon source includes water glass; and the catalyst includes dilute hydrochloric acid.

[0126] The process of the continuous fiber material passing through the continuous fiber matrix impregnation device comprises the following steps:

[0127] The continuous fiber matrix impregnation device comprises an impregnation solution container 3 and an impregnation transmission device;

[0128] The impregnation device comprises a first impregnation support roller 4, a plurality of second impregnation support rollers 5, a plurality of first impregnation pressure rollers 6, a second impregnation pressure roller 7, and a third impregnation support roller 8; the second impregnation support roller 5 is arranged opposite to the first impregnation pressure roller 6; the plurality of second impregnation support rollers 5, the plurality of first impregnation pressure rollers 6, and the second impregnation pressure roller 7 are located inside the impregnation solution container 3.

[0129] The continuous fiber material sequentially passes above the first impregnation support roller 4, between the second impregnation support roller 5 and the first impregnation pressure roller 6, below the second impregnation pressure roller 7, and above the third impregnation support roller 8.

[0130] The continuous fiber material between the first impregnation pressure roller 6 and the second impregnation pressure roller 7 located inside the impregnation solution container 3 near the continuous unwinding device 1 is located inside the impregnation solution container 3.

[0131] The process of the continuous fiber material passing through the continuous gel curing device comprises the following steps:

[0132] The continuous gel curing device comprises a continuous curing support frame and a curing conveyor belt 9 rotationally connected to the continuous curing support frame.

[0133] 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.

[0134] 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.

[0135] The continuous aging device 29 comprises a spraying device; the spraying device is opened, and an aging solution is sprayed through the spraying device to the continuous fiber material passing through the continuous aging device 29.

[0136] The continuous aging device 29 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.

[0137] The lifting device comprises a lifting support frame at an angle of 75° with the ground, a lifting conveyor belt 10 rotationally connected to the lifting support frame, a first lifting pressure roller 11, a second lifting pressure roller 12, and a first lifting support roller 13.

[0138] The first aging device comprises a first aging support frame arranged vertically with the ground, a first aging conveyor belt 18 in transmission connection with the first aging support frame, a first spraying device 14, a first aging pressure roller A 15, a first aging support roller A 16, and a first aging pressure roller B 17.

[0139] The second aging device comprises a second aging support vertically arranged with the ground, a first aging conveying belt 18, a second spraying device 19, a second aging press roller A 20, a second aging support roller A 21, and a second aging press roller B 22 in driving connection with the second aging support;

[0140] The third aging device comprises a third aging support vertically arranged with the ground, a first aging conveying belt 18, a third spraying device 27, a third aging press roller A 24, a third aging support roller A 25, and a third aging press roller B 26 in driving connection with the third aging support;

[0141] The second lifting press roller 12 is arranged at a height lower than the first lifting press roller 11, and is in rotating connection with the first aging recovery container;

[0142] The first aging press roller A 15 is arranged at a height lower than the first lifting press roller 11 and higher than the first aging press roller B 17, and is in rotating connection with the first aging recovery container. The second lifting press roller 12 and the first aging press roller A 15 are located in the first aging recovery container;

[0143] The second aging press roller A 20 is arranged at a height lower than the first aging press roller A 15 and higher than the second aging press roller B 22. The first aging press roller B 17 and the second aging press roller A 20 are in rotating connection with the second aging recovery container. The first aging press roller B 17 and the second aging press roller A 20 are located in the second aging recovery container;

[0144] The third aging press roller A 24 is arranged at a height lower than the second aging press roller A 20. The second aging press roller B 22 and the third aging press roller A 24 are in rotating connection with the third aging recovery container. The second aging press roller B 22 and the third aging press roller A 24 are located in the third aging recovery container.

[0145] The process of the continuous fiber material passing through the continuous aging device 29 comprises the following steps:

[0146] The continuous fiber material passing through the continuous curing device sequentially passes below the first lifting press roller 11, below the first lifting support roller 13, below the second lifting press roller 12, below the first aging press roller A 15, above the first aging support roller A 16, below the first aging press roller B 17, below the second aging press roller A 20, above the second aging support roller A 21, below the second aging press roller B 22, below the third aging press roller A 24, above the third aging support roller A 25, and below the third aging press roller B 26;

[0147] The process of spraying the aging solution to the continuous fiber material passing through the continuous aging device 29 by the spraying device comprises the following steps:

[0148] The first spraying device 14, the second spraying device 19 and the third spraying device 27 are opened in sequence;

[0149] The first spraying device 14 sprays a first aging solution to the continuous fiber material between the first lifting support roller 13 and the second lifting pressure roller 12 and the continuous fiber material between the first aging pressure roller A15 and the first aging support roller A16;

[0150] The continuous fiber material between the second lifting pressure roller 12 and the first aging pressure roller A15 is located in the first aging recovery container containing the first aging solution;

[0151] The second spraying device 19 sprays a second aging solution to 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;

[0152] The continuous fiber material between the first aging pressure roller B17 and the second aging pressure roller A20 is located in the second aging recovery container containing the second aging solution;

[0153] The third spraying device 27 sprays a third aging solution to 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;

[0154] The continuous fiber material between the second aging pressure roller B22 and the third aging pressure roller A24 is located in the second aging recovery container containing the third aging solution; preferably, the first aging solution is anhydrous ethanol; the second aging solution is deionized water; and the third aging solution comprises deionized water and hexamethyldisiloxane, and the mass ratio of deionized water to surface modifier is 1:0.1;

[0155] The continuous modification device 30 comprises a modification solution container, and a modification solution is added to the modification solution storage container;

[0156] The process of the continuous fiber material passing through the continuous modification device 30 comprises the following steps:

[0157] The continuous modification device 30 further comprises 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 and m≥3;

[0158] The modification solution container is provided with a modification solution;

[0159] The first modified support roller 31 is located outside the modified solution container, higher than the modified solution container, and above the modified solution container near one end of the continuous modification device 30.

[0160] The second modified support roller 35 is located outside the modified solution container, higher than the modified solution container, and above the modified solution container near one end of the continuous drying device;

[0161] The n third modified support rollers 32 are located inside the modified solution container near one side of the continuous aging device 29, and the n third modified support rollers 32 are vertically arranged from top to bottom.

[0162] The m fourth modified support rollers 33 are located inside the modified solution container near one side of the continuous drying device, and the n third modified support rollers 32 are vertically arranged from top to bottom.

[0163] The first modified pressure roller 34 is located inside the modified solution container, near one side of the drying device inside the modified solution container, and the height of the first modified pressure roller 34 is not higher than the lowest height of the fourth modified support roller 33.

[0164] The continuous fiber material passing through the continuous aging device 29 is sequentially passed above the first modified support roller 31, and then alternately wound around the third modified support roller 32, the fourth modified support roller 33, and then passed below the first modified pressure roller 34 and above the second modified support roller 35 from top to bottom and from left to right; The total number of the third modified support roller 32 and the fourth modified support roller 33 is 8.

[0165] The continuous fiber material between the third modified support roller 32 with the highest setting position and the second modified support roller 35 is located in the modified solution container; preferably, the modified solution includes hexamethyldisilazane, and the temperature of the modified solution is 77℃.

[0166] The continuous drying device includes a box body 38 and a heating device inside the box body 38. 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 38 is 60℃, and the drying time is 50 minutes.

[0167] The process of connecting the continuous drying device with the second transmission shaft of the second drying pressure roller 39 includes the following steps:

[0168] The continuous drying device further includes a first drying pressure roller 36, a second drying pressure roller 39, and a drying conveyor belt 37.

[0169] The first drying pressure roller 36 and the second drying pressure roller 39 are located outside the box body 38.

[0170] The first drying press roller 36 is located between the continuous modification device 30 and the continuous drying device, and the height of the first drying press roller 36 is the same as the height of the inlet end of the drying conveying belt 37;

[0171] The second drying press roller 39 is located between the continuous drying device and the second drying press roller 39, and the height of the second drying press roller 39 is the same as the height of the outlet end of the drying conveying belt 37;

[0172] The continuous fiber material passing through the continuous modification device 30 is sequentially passed under the first drying press roller 36, then laid on the surface of the drying conveying belt 37, and then passed under the second drying press roller 39 connected to the second rotating shaft of the second drying press roller 39;

[0173] The continuous fiber material laid on the surface of the drying conveying belt 37 is located inside the box 38, and the linear speed of the drying conveying belt 37 is the same as the linear speed of the continuous fiber material.

[0174] 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 sleeved on the base material roll of the first transmission shaft is subjected to impregnation of the precursor solution, gel curing, gel aging, modification of the modification solution, and drying, and then is wound on the second transmission shaft to obtain a continuous aerogel composite material roll sleeved on the second transmission shaft;

[0175] The continuous aerogel composite material production process further includes confirming the linear speed V1 of the continuous fiber material movement, the angular speed ω1 of the first transmission shaft, the angular speed ω2 of the second transmission shaft, the linear speed V2 of the curing conveying belt 9, the linear speed V3 of the lifting conveying belt 10, the linear speed V4 of the first aging conveying belt 18, the linear speed V5 of the second aging conveying belt 23, the linear speed V6 of the third aging conveying belt 28, the linear speed V7 of the drying conveying belt 37, 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. The confirmation includes the following steps:

[0176] According to the drying time T=0.25-1h of the continuous fiber material after impregnation, curing, aging, and modification, and the length L3 of the continuous drying equipment box 38, the linear speed of the continuous fiber material in the production process is calculated by Formula One;

[0177] Formula One: V1=L3 / T;

[0178] ω1=V1 / R1, ω2=V1 / R2;

[0179] R1 is the real-time radius of the continuous fiber base material roll 2 connected to the continuous unwinding device 1 at the beginning of production and during the production process;

[0180] R2 is the real-time radius of the continuous aerogel composite material roll connected with the second drying compression roller 39 at the beginning of production and during production;

[0181] V1=V2=V3=V4=V5=V6;

[0182] L1=V1xt1, t1 is the aging time of the continuous fiber material, which is 18h;

[0183] L2=V1xt2, t2 is the modification time of the continuous fiber material, which is 32.4h;

[0184] The heating mode is microwave heating; the linear speed of the continuous fiber matrix material roll 2 when the continuous unwinding device 1 unwinds is equal to the linear speed of the continuous aerogel composite material roll when the second drying compression roller 39 unwinds.

[0185] When the aging time and the 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 process of the continuous fiber material passing through the continuous aging device 29;

[0186] The length L2 of the continuous fiber material passing through the continuous modification device 30 can be adjusted during the process of the continuous fiber material passing through the continuous modification device; L1:L2 is 1:1.8;

[0187] The method for adjusting the length L1 of the continuous fiber material passing through the continuous aging device 29 comprises the following steps:

[0188] L1 is confirmed by the linear speed V1 of the continuous fiber material movement and the aging time t1 of the continuous fiber material; L1=V1xt1;

[0189] Then, L1 is adjusted by adjusting the process of the continuous fiber material passing through the continuous aging device 29;

[0190] According to the size relationship between the length LA of the continuous fiber material between the first lifting support roller 13 and the first aging support roller A16, the length LB of the continuous fiber material between the first aging support roller A and the second aging support roller A21, the length LC of the continuous fiber material between the second aging support roller A21 and the third aging support roller B, and L1, whether the continuous fiber material passes under the second aging compression roller A20 and / or the third aging compression roller A24 is adjusted to realize the adjustment of L1;

[0191] The method for adjusting the length L2 of the continuous fiber material passing through the continuous modification device 30 comprises the following steps:

[0192] L2 is confirmed by the linear speed V1 of the continuous fiber material movement and the modification time t2 of the continuous fiber material; L2=V1xt2;

[0193] L2 adjustment is achieved by adjusting the process of the continuous fiber material passing through the continuous modification device 30;

[0194] According to the size relationship between the axial distance d of the adjacent third modification support roller 32 and the fourth modification support roller 33 and L2, the number of the continuous fiber material passing around the third modification support roller 32 and the fourth modification support roller 33 is adjusted to achieve the adjustment of L1.

[0195] Embodiment 2:

[0196] The same content of this embodiment as embodiment 1 will not be repeated; the different scheme of this embodiment and embodiment 1 is as follows:

[0197] The embodiment provides a continuous production process of aerogel composite material; further preferably, the second groove is 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.

[0198] The continuous fiber material between the second aging compression roller B22 and the third aging compression roller A24 is located in the second aging recovery container, and the third aging solution is contained in the third aging recovery container; preferably, the first aging solution is anhydrous ethanol; the second aging solution is deionized water; and the third aging solution includes hexamethyldisiloxane;

[0199] The continuous fiber material passing through the continuous aging device 29 passes above the first modification support roller 31 in sequence, and then alternately passes around the third modification support roller 32, the fourth modification support roller 33 from top to bottom and from left to right, and then passes through below the first modification compression roller 34 and above the second modification support roller 35; the total number of the third modification support roller 32 and the fourth modification support roller 33 is 6;

[0200] The continuous fiber material between the third modification support roller 32 with the highest setting position and the second modification support roller 35 is located in the modification solution container; preferably, the modification solution includes trimethylchlorosilane, and the temperature of the modification solution is 65 DEG C.

[0201] L1=V1×t1, t1 is the aging time of the continuous fiber material, which is 20 h;

[0202] L2=V1×t2, t2 is the modification time of the continuous fiber material, which is 24 h;

[0203] During the process of passing the continuous fiber material 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;

[0204] The continuous drying device comprises a box 38 and a heating device in the box 38, the heating device is opened, and the heating mode is microwave heating, so that the drying time can be effectively shortened; the temperature in the box 38 is 65 DEG C; and the drying time is 45 minutes.

[0205] The above description is only the preferred embodiment of the application and the explanation of the applied technical principles. It should be understood by those skilled in the art that the application range involved in the application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by the combination of the above technical features or equivalent features without departing from the application concept. For example, the above features are similar to the functions disclosed in the application (but not limited to).

Claims

1. A process for the continuous production of aerogel composites, characterized in that, The method comprises the following steps: Preparation of 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 threaded 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 the second transmission shaft of the continuous winding device; The prepared precursor solution is added to the continuous fiber matrix impregnation device; The continuous aging device comprises a spraying device; The spraying device is turned on, and the aging solution is sprayed through the spraying device to the continuous fiber material passing through the continuous aging device; The continuous modification device comprises a modification solution container, and a modification solution is added to the modification solution storage container; The continuous drying device comprises a box and a heating device in the box, the heating device is turned on, the temperature in the box is 40-80℃, and the drying time is 15-60 minutes; The continuous unwinding device and the power device of the continuous unwinding device are turned on, the first transmission shaft and the second transmission shaft rotate in the same direction, the continuous fiber material sleeved on the matrix material roll of the first transmission shaft is impregnated with the precursor solution, gelatinized, aged, modified by the modification solution, and dried, and then wound on the second transmission shaft to obtain a continuous aerogel composite material roll sleeved on the second transmission shaft; During the process of threading 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 threading 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 aerogel composite continuous production process of claim 1, wherein, The precursor solution is prepared by a precursor solution preparation device, and 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 storage tank, and a precursor buffer tank; The silicon source in the silicon source storage tank and the solvent in the solvent storage tank are mixed in 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 mixed in 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 mixed in the precursor preparation storage tank at a mass ratio of (3-5):(5-7) to obtain a precursor solution, and the prepared precursor solution is all transferred to the precursor buffer tank; then the precursor solution is prepared again through the precursor preparation tank; The precursor solution in the precursor buffer tank is used to supplement the precursor solution to the continuous fiber matrix impregnation device; The solvent is deionized water; the silicon source comprises water glass or silica sol; and the catalyst comprises one of dilute hydrochloric acid, dilute sulfuric acid, acetic acid, oxalic acid, and citric acid.

3. The aerogel composite continuous production process of claim 1, wherein, The process of threading the continuous fiber material 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 device comprises a first impregnation support roller, a plurality of second impregnation support rollers, a plurality of first impregnation pressure rollers, a second impregnation pressure roller, and a third impregnation support roller; the second impregnation support roller is arranged opposite to the first impregnation pressure roller; the plurality of second impregnation support rollers, the plurality of first impregnation pressure rollers, and the second impregnation pressure roller are located inside the impregnation solution container; The continuous fiber material is sequentially passed above the first impregnation support roller, between the second impregnation support roller and the first impregnation pressure roller, below the second impregnation pressure roller, and above the third impregnation support roller; The first impregnation pressure roller and the second impregnation pressure roller are located inside the impregnation solution container and close to the continuous unwinding device.

4. The aerogel composite continuous production process of claim 1, wherein, The process of passing the continuous fiber material through the continuous gel curing device comprises the following steps: The continuous gel curing device comprises a continuous curing support frame and a curing conveying belt rotationally 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 conveying belt above the continuous curing support frame; The linear speed of the curing conveying belt is the same as the linear speed of the continuous fiber material.

5. The aerogel composite continuous production process of claim 1, wherein, 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 comprises a lifting support frame at an angle of 60-90° with the ground, a lifting conveying belt rotationally connected to the lifting support frame, a first lifting pressure roller, a second lifting pressure roller, and a first lifting support roller; The first aging device comprises a first aging support frame arranged vertically with the ground, a first aging conveying belt rotationally connected to the first aging support frame, a first spraying device, a first aging pressure roller A, a first aging support roller A, and a first aging pressure roller B; The second aging device comprises a second aging support frame arranged vertically with the ground, a first aging conveying belt rotationally connected to the second aging support frame, a second spraying device, a second aging pressure roller A, a second aging support roller A, and a second aging pressure roller B; The third aging device comprises a third aging support frame arranged vertically with the ground, a first aging conveying belt rotationally connected to the third aging support frame, a third spraying device, a third aging pressure roller A, a third aging support roller A, and a third aging pressure roller B; The second lifting pressure roller is arranged lower than the first lifting pressure roller, and is rotationally connected to the first aging recovery container; The first aging pressure roller A is arranged lower than the first lifting pressure roller and higher than the first aging pressure roller B, is rotationally connected to the first aging recovery container, and is located in the first aging recovery container together with the second lifting pressure roller; The second aging pressure roller A is arranged lower than the first aging pressure roller A and higher than the second aging pressure roller B, is rotationally connected to the second aging recovery container, and is located in the second aging recovery container together with the first aging pressure roller B; The third aging pressure roller A is arranged lower than the second aging pressure roller A, is rotationally connected to the third aging recovery container, and is located in the third aging recovery container together with the second aging pressure roller B.

6. The continuous production process of aerogel composites according to claim 5, wherein 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 sequentially passes under the first lifting pressure roller, under the first lifting support roller, under the second lifting pressure roller, under the first aging pressure roller A, above the first aging support roller A, under the first aging pressure roller B, under the second aging pressure roller A, above the second aging support roller A, under the second aging pressure roller B, under the third aging pressure roller A, above the third aging support roller A, and under the third aging pressure roller B; and / or the process of the aging solution being sprayed by the spraying device to the continuous fiber material passing through the continuous aging device comprises the following steps: the first spraying device, the second spraying device, and the third spraying device are sequentially turned on; the first spraying device sprays the first aging solution to the continuous fiber material between the first lifting support roller and the second lifting pressure roller, and to 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 pressure roller and the first aging pressure roller A is located in the first aging recovery container containing the first aging solution; the second spraying device sprays the second aging solution to the continuous fiber material between the first aging support roller A and the first aging pressure roller B, and to 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 pressure roller B and the second aging pressure roller A is located in the second aging recovery container containing the second aging solution; the third spraying device sprays the third aging solution to the continuous fiber material between the second aging support roller A and the second aging pressure roller B, and to 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 pressure roller B and the third aging pressure roller A is located in the third aging recovery container containing the third aging solution.

7. The continuous production process of aerogel composites according to claim 1, wherein 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 modification pressure roller, a first modification support roller, a second modification support roller, n third modification support rollers, and m fourth modification support rollers, wherein n≥3 and m≥3; the modification solution container is provided with a modification solution; the first modification support roller is located outside and above the modification solution container, located above the modification solution container close to one end of the continuous modification device, or located between the modification solution container and the continuous modification device; the second modification support roller is located outside and above the modification solution container, located above the modification solution container close to one end of the continuous modification device, or located between the modification solution container and the continuous modification device; the n third modification support rollers are located inside the modification solution container close to one end of the continuous modification device, and the n third modification support rollers are vertically arranged from top to bottom. ​ ​ ​ m fourth modified supporting rollers are located inside the modified solution container near the side of the continuous drying device; The first modified pressure roller is located inside the modified solution container, near the side of the drying device, and the height of the first modified pressure roller is not higher than the lowest height of the fourth modified supporting roller; The continuous fiber material passing through the continuous aging device passes above the first modified supporting roller in turn, and then alternately passes around the third modified supporting roller, the fourth modified supporting roller from top to bottom and from left to right, and then passes below the first modified pressure roller and above the second modified supporting roller; The continuous fiber material between the third modified supporting roller with the highest setting position and the second modified supporting roller is located in the modified solution container.

8. The aerogel composite continuous production process of claim 1, wherein, The process of connecting the continuous drying device with the second transmission shaft of the continuous winding device includes the following steps: The continuous drying device further comprises a first drying pressure roller, a second drying pressure roller, and a drying conveying belt; The first drying pressure roller and the second drying pressure roller are located outside the box body; The first drying pressure roller is located between the continuous modification device and the continuous drying device, and the height of the first drying pressure roller is the same as the height of the inlet end of the drying conveying belt; The second drying pressure roller is located between the continuous drying device and the continuous winding device, and the height of the second drying pressure roller is the same as the outlet end of the drying conveying belt or is located between the outlet end of the drying conveying belt and the highest point of the continuous winding device; The continuous fiber material passing through the continuous modification device passes below the first drying pressure roller in turn, and then is laid on the surface of the drying conveying belt, and then passes below the second drying pressure roller and the second transmission shaft of the continuous winding device; The continuous fiber material laid on the surface of the drying conveying belt is located inside the box body.

9. The aerogel composite continuous production process of claim 1, wherein, Further comprising: 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 conveying belt: V2, the linear velocity of the lifting conveying belt: V3, the linear velocity of the first aging conveying belt: V4, the linear velocity of the second aging conveying belt: V5, the linear velocity of the third aging conveying belt: V6, the linear velocity of the drying conveying 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 modification device; Specifically comprising the following steps: According to the drying time T=0.25-1h of the continuous fiber material after impregnation, curing, aging, and modification, and the box body L3 of the continuous drying equipment, the linear velocity of the continuous fiber material in the production process is calculated by Formula One; Formula One: V1=L3 / T; ω1=V1 / R1, ω2=V1 / R2; R1 is the real-time radius of the continuous fiber base material roll connected by 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 material roll connected by the continuous winding device at the beginning of production and during the production process; V1=V2=V3=V4=V5=V6; L1=V1×t1, t1 is the aging time of the continuous fiber material, which is 12-24h; L2=V1×t2, t2 is the modification time of the continuous fiber material, which is 12-52.8h.

10. The aerogel composite material continuous production process according to claim 5, wherein, the length L1 adjustment method 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 movement and the aging time t1 of the continuous fiber material; L1 = V1 x t1; then, the L1 adjustment is realized by adjusting the process of the continuous fiber material passing through the continuous aging device; according to the size relationship between the length LA of the continuous fiber material between the first lifting support roller and the first aging support roller A, the length LB of the continuous fiber material between the first aging support roller A and the second aging support roller A, the length LC of the continuous fiber material between the second aging support roller A and the third aging support roller B, and L1, it is adjusted whether the continuous fiber material passes below the second aging compression roller A and / or the third aging compression roller A, so as to realize the adjustment of L1; and / or the length L2 adjustment method of the continuous fiber material passing through the continuous modification device comprises the following steps: L2 is determined by the linear velocity V1 of the continuous fiber material movement and the modification time t2 of the continuous fiber material; L2 = V1 x t2; then, the L2 adjustment is realized by adjusting the process of the continuous fiber material passing through the continuous modification device; according to the size relationship between the axis distance d of the adjacent third modification support roller and the fourth modification support roller and L2, the number of the continuous fiber material passing around the third modification support roller and the fourth modification support roller is adjusted, so as to realize the adjustment of L1.

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