CN115676840A - Device and method for preparing aerogel with high specific surface area - Google Patents
Device and method for preparing aerogel with high specific surface area Download PDFInfo
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- CN115676840A CN115676840A CN202211104833.3A CN202211104833A CN115676840A CN 115676840 A CN115676840 A CN 115676840A CN 202211104833 A CN202211104833 A CN 202211104833A CN 115676840 A CN115676840 A CN 115676840A
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- 239000004964 aerogel Substances 0.000 title claims description 38
- 238000000034 method Methods 0.000 title claims description 17
- 238000001035 drying Methods 0.000 claims abstract description 88
- 238000002360 preparation method Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 230000007306 turnover Effects 0.000 claims abstract description 10
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 239000000499 gel Substances 0.000 claims description 49
- 238000007603 infrared drying Methods 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000741 silica gel Substances 0.000 claims description 12
- 229910002027 silica gel Inorganic materials 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 238000000352 supercritical drying Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001599 direct drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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Abstract
The invention discloses a turnover mechanism arranged in a drying oven for preparation; the turnover mechanism comprises a first electric cylinder, a first rack, a first rod and a fixed block; the first electric cylinder is fixedly connected to the outer side wall of the drying box through a supporting block; the output shaft of the first electric cylinder is fixedly connected with a second rod; the first rack is fixedly connected to the end part of the second rod; the first rod penetrates through and is rotatably connected to the side wall of the drying box, one end, located outside the drying box, of the first rod is sleeved and fixedly connected with a first gear, and the other end of the first rod is connected to the inner wall of the drying box through a bearing; the fixed block is fixedly connected to the surface of the second rod; the inner wall rigid coupling of drying cabinet has two to hold the board, and two block hold the board symmetry and set up the both sides at No. two poles. The invention uses sodium silicate solution as silicon source and catalyst, without introducing other chemical components, and greatly shortens the gelling speed at normal temperature and pressure.
Description
Technical Field
The invention relates to the technical field of aerogel preparation, in particular to a method and a device for preparing aerogel with a high specific surface area.
Background
The silicon dioxide aerogel is a novel solid thermal insulation material, has the characteristics of light weight, low stacking density, large specific surface area, high porosity, small pore diameter and the like, is a nano thermal insulation material with the greatest prospect at the present stage, and has wide application prospects in the fields of industrial thermal insulation, energy efficiency technical improvement, external wall thermal insulation and the like.
At present, the method for preparing the silicon dioxide aerogel comprises a supercritical drying method and an atmospheric drying method, compared with the supercritical drying method, the atmospheric drying method has the characteristics of low manufacturing cost, high preparation safety and the like, and the principle is that a low-surface-tension solution is adopted to replace a high-surface-tension liquid in the aerogel, so that the direct drying under the atmospheric pressure is realized. But the aerogel prepared by the normal pressure drying method has relatively small specific surface area (500 m) 2 /g) far lower than that of the aerogel with high specific surface area prepared by the supercritical drying method. Therefore, how to realize high specific surface area (more than or equal to 1000 m) under normal temperature and normal pressure 2 /g) low cost preparation of aerogels, a problem to be solved.
In addition, the normal pressure drying method needs to carry out solvent replacement for many times and process side reaction products, and has complex preparation process and long preparation period; therefore, in order to solve the above problems, the present invention provides a method and an apparatus for preparing aerogel with high specific surface area.
Disclosure of Invention
The invention aims to solve the technical problem of realizing a method and a device for preparing aerogel with high specific surface area.
The technical scheme adopted by the invention for solving the technical problems is to realize a high-specific-surface-area aerogel preparation device, which is characterized in that: a turnover mechanism is arranged in a drying box (1) of the device; the turnover mechanism comprises a first electric cylinder (2), a first rack (3), a first rod (4) and a fixed block (5); the first electric cylinder (2) is fixedly connected to the outer side wall of the drying box (1) through a supporting block; the output shaft of the first electric cylinder (2) is fixedly connected with a second rod (6); the first rack (3) is fixedly connected to the end part of the second rod (6); the first rod (4) penetrates through and is rotatably connected to the side wall of the drying box (1), one end, located outside the drying box (1), of the first rod (4) is sleeved and fixedly connected with a first gear (7), and the other end of the first rod is connected to the inner wall of the drying box (1) through a bearing; the fixed block (5) is fixedly connected to the surface of the second rod (6); the inner wall of drying cabinet (1) is fixedly connected with two containing plates (8), and two containing plates (8) are symmetrically arranged on two sides of second rod (6).
A first isosceles trapezoid block (9) is fixedly connected to the outer wall of the second rod (6); the outer side wall of the drying box (1) is fixedly connected with a guide rod (10), and the surface of the guide rod (10) is sleeved and connected with a push plate (11) in a sliding manner; a spring (26) is sleeved on the outer wall of the guide rod (10) between the push plate (11) and the drying box (1); a second isosceles trapezoid block (12) is fixedly connected to one side, close to the first isosceles trapezoid block (9), of the push plate (11); an arc-shaped groove is formed in one side, close to the drying box (1), of the push plate (11).
A cavity (27) is formed in the fixing block (5), and two through grooves (28) are symmetrically formed in one side, far away from the first rod (4), of the fixing block (5); the clamping plate (13) is connected in the through groove (28) in a sliding mode, and the length of the clamping plate (13) on one side of the fixing block (5) is larger than that of the clamping plate (13) on the other side; the center position inside the cavity (27) is rotationally connected with a second gear (14); one end of the clamping plate (13) positioned in the cavity (27) is fixedly connected with a second rack (15), and the two second racks (15) are meshed with a second gear (14); one side of the fixed block (5) close to the push plate (11) is penetrated through and is connected with a push rod (16) in a sliding mode, one end of the push rod (16) is fixedly connected with a second rack (15), and the other end of the push rod is connected in an arc-shaped groove in the side wall of the push plate (11) in a sliding mode.
A third rod (17) is fixedly connected to one end of the first rod (4) which is positioned outside the drying box (1); a supporting plate (18) penetrates through and is connected with the back side of the drying box (1) in a sliding manner; one end of the support plate (18) positioned outside the drying box (1) is provided with a through hole (25); the third rod (17) penetrates through the through hole (25); the bottom of the supporting plate (18) is provided with an infrared drying lamp (19).
A second electric cylinder (20) is fixedly connected to the top of the supporting plate (18); a fourth rod (21) is fixedly connected with an output shaft of the second electric cylinder (20); the bottom end of the fourth rod (21) is fixedly connected with an installation plate (22); the infrared drying lamp (19) is arranged at the bottom of the mounting plate (22).
The inner wall of the drying box (1) is fixedly connected with a guide post (23); the top of the supporting plate (18) is fixedly connected with a connecting plate (24); the guide post (23) penetrates through and is connected with the connecting plate (24) in a sliding mode.
The preparation method of the aerogel with the high specific surface area based on the preparation device of the aerogel with the high specific surface area comprises the following steps:
s1: selecting a sodium silicate solution as a high-quality silicon source, adding the sodium silicate solution into a reaction kettle, adding hydrochloric acid to adjust the pH value, and promoting the hydrolysis of the reaction to obtain silica sol;
s2: adding a homogeneous silicon source serving as a catalyst into a reaction kettle to enable silica sol to gel at normal temperature and normal pressure to obtain silica gel;
s3: and (3) adding absolute ethyl alcohol into the silica gel obtained in the S2, carrying out suction filtration, adding normal hexane to obtain low-surface-tension silica gel, carrying out hydrophobic treatment on the low-surface-tension silica gel to obtain modified gel, and finally drying the modified gel to obtain the aerogel.
And in the S3, the modified gel is placed in a drying box (1) and dried by adopting an infrared drying mode.
The invention has the advantages that:
1. the invention uses sodium silicate solution as silicon source and catalyst, without introducing other chemical components, greatly shortens the gelling speed at normal temperature and pressure; the polymerization regularity of the aerogel is improved, and the pore structure is more uniform; the preparation method is simple, the industrial production cost is low, and the obtained aerogel has high performance and large specific surface area; the reagent used in the invention is environment-friendly and has no three wastes.
2. According to the invention, the turnover mechanism is arranged, the first rack is driven to move forwards by the first electric cylinder, so that the first rack and the first gear are in meshed motion, the first rod drives the fixing block to rotate by 180 degrees, the modified gel is further turned over from the containing plate on the left side of the drying box to the containing plate on the right side of the drying box, the side, which is not dried, of the modified gel is positioned right above, the modified gel is conveniently and continuously dried, the materials are not required to be turned over manually, the labor intensity is reduced, the condition that an infrared drying lamp always irradiates the same side of the modified gel is avoided, the drying speed is further favorably improved, and the aerogel preparation efficiency is improved by the preparation method.
Drawings
The following is a brief description of the contents of each figure and the symbols in the figures in the description of the invention:
FIG. 1 is a flow chart of a preparation method of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the backside structure of the present invention;
FIG. 4 is a schematic view of a partial cross-sectional structure of the present invention;
FIG. 5 is an enlarged view of a portion of the area A in FIG. 3;
fig. 6 is a partial sectional view schematically illustrating a fixing block according to the present invention.
In the figure: 1. a drying oven; 2. a first electric cylinder; 3. a first rack; 4. a first rod; 5. a fixed block; 6. a second rod; 7. a first gear; 8. a holding plate; 9. a first isosceles trapezoid block; 10. a guide bar; 11. pushing the plate; 12. a second isosceles trapezoid block; 13. a splint; 14. a second gear; 15. a second rack; 16. a push rod; 17. a third rod; 18. a support plate; 19. an infrared drying lamp; 20. a second electric cylinder; 21. a fourth rod; 22. mounting a plate; 23. a guide post; 24. a connecting plate; 25. a through hole; 26. a spring; 27. a cavity; 28. a through groove.
Detailed Description
The following description of the embodiments with reference to the drawings is provided to describe the embodiments of the present invention, and the embodiments of the present invention, such as the shapes and configurations of the components, the mutual positions and connection relationships of the components, the functions and working principles of the components, the manufacturing processes and the operation and use methods, etc., will be further described in detail to help those skilled in the art to more completely, accurately and deeply understand the inventive concept and technical solutions of the present invention.
Example one
Referring to fig. 1, a method for preparing an aerogel with a high specific surface area includes the following steps:
s1: selecting a sodium silicate solution as a high-quality silicon source, adding the sodium silicate solution into a reaction kettle, adding hydrochloric acid to adjust the pH value, and promoting the hydrolysis of the reaction to obtain silica sol;
s2: adding a homogeneous silicon source serving as a catalyst into a reaction kettle to enable silica sol to gel at normal temperature and normal pressure to obtain silica gel;
s3: and (3) adding absolute ethyl alcohol into the silica gel obtained in the S2, carrying out suction filtration, adding normal hexane to obtain low-surface-tension silica gel, carrying out hydrophobic treatment on the low-surface-tension silica gel to obtain modified gel, and finally drying the modified gel to obtain the aerogel.
In the step S3, the modified gel is placed in the drying oven 1, and the modified gel is dried by infrared ray drying.
The preparation method has the following advantages:
the test result shows that the specific surface area of the aerogel is as high as 1300m 2 /g；
The prepared aerogel contains no other chemical components, the purity of the prepared silicon dioxide aerogel is high, and three wastes are not generated;
the silicon source has double functions, is a silicon source and a catalyst, adopts an inorganic silicon source preparation mode, and has low preparation cost and short process flow.
Example two
Referring to fig. 2-5, a high specific surface area aerogel preparation apparatus, which is suitable for the above-mentioned high specific surface area aerogel preparation method, is provided with a turnover mechanism in the drying oven 1; the turnover mechanism comprises a first electric cylinder 2, a first rack 3, a first rod 4 and a fixed block 5; the first electric cylinder 2 is fixedly connected to the outer side wall of the drying box 1 through a supporting block; the output shaft of the first electric cylinder 2 is fixedly connected with a second rod 6; the first rack 3 is fixedly connected to the end part of the second rod 6; the first rod 4 penetrates through and is rotatably connected to the side wall of the drying box 1, one end, located outside the drying box 1, of the first rod 4 is sleeved and fixedly connected with a first gear 7, and the other end of the first rod is connected to the inner wall of the drying box 1 through a bearing; the fixed block 5 is fixedly connected to the surface of the second rod 6; two containing plates 8 are fixedly connected to the inner wall of the drying box 1, and the two containing plates 8 are symmetrically arranged on two sides of the second rod 6; the surface of the containing plate 8 is uniformly provided with air holes; when the drying oven works, firstly, a box door of the drying oven 1 is opened, modified gel is placed on the top of a containing plate 8 on the left side in the drying oven 1, drying of the modified gel is achieved through an infrared drying lamp 19, then, a first electric cylinder 2 is started, the first electric cylinder 2 drives a second rod 6 and a first rack 3 to move forwards, the first rack 3 and a first gear 7 are enabled to generate meshing motion, the first gear 7 drives a first rod 4 to rotate, the first rod 4 drives a fixing block 5 to rotate for 180 degrees, the fixing block 5 can clamp the modified gel, the modified gel is further enabled to move from the containing plate 8 on the left side of the drying oven 1 to the containing plate 8 on the right side of the drying oven 1, meanwhile, the modified gel is also turned over, the side which is not dried is located right above, and then drying of the modified gel is continuously achieved; through the arrangement of the turnover mechanism, materials do not need to be turned over manually, the labor intensity is reduced, the situation that the infrared drying lamp 19 irradiates the same side of the modified gel all the time is avoided, the drying speed is improved, and the aerogel preparation efficiency is improved by the preparation method provided by the invention.
As an embodiment of the invention, a first isosceles trapezoid block 9 is fixedly connected to the outer wall of the second rod 6; the outer side wall of the drying box 1 is fixedly connected with a guide rod 10, and the surface of the guide rod 10 is sleeved and connected with a push plate 11 in a sliding manner; a spring 26 is sleeved on the outer wall of the guide rod 10 between the push plate 11 and the drying box 1; a second isosceles trapezoid block 12 is fixedly connected to one side of the push plate 11 close to the first isosceles trapezoid block 9; an arc-shaped groove is formed in one side, close to the drying box 1, of the push plate 11; in operation, after No. one electric cylinder 2 drives No. one pole 4 towards the direction motion that is close to No. one gear 7, no. one rack 3 can not produce the meshing motion with No. one gear 7 at once, and No. one isosceles trapezoid piece 9 extrudes No. two isosceles trapezoid pieces 12 before this for No. two isosceles trapezoid pieces 12 and push pedal 11 are towards the one side motion that is close to drying cabinet 1, and spring 26 between push pedal 11 and drying cabinet 1 receives the compression simultaneously.
As an embodiment of the invention, a cavity 27 is arranged inside the fixed block 5, and two through grooves 28 are symmetrically formed on one side of the fixed block 5 away from the first rod 4; the through groove 28 is connected with a clamping plate 13 in a sliding manner, and the length of the clamping plate 13 on one side of the fixing block 5 is greater than that of the clamping plate 13 on the other side; the second gear 14 is rotatably connected to the central position inside the cavity 27; a second rack 15 is fixedly connected to one end of the clamping plate 13, which is positioned in the cavity 27, and the two second racks 15 are both meshed with the second gear 14; the fixed block 5 penetrates through one side close to the push plate 11 and is connected with a push rod 16 in a sliding mode, one end of the push rod 16 is fixedly connected with a second rack 15, and the other end of the push rod 16 is connected in an arc-shaped groove in the side wall of the push plate 11 in a sliding mode; the clamping plate 13 is connected in the through groove 28 through the matching between the sliding block and the sliding groove, and the two second racks 15 are arranged on two sides of the second gear 14; when the modified gel clamping device works, after the push plate 11 moves towards one side close to the drying box 1, the push rod 16 is extruded, so that the push rod 16 moves with the second rack 15, and the two second racks 15 move oppositely due to the fact that the two second racks 15 and the second gear 14 are in a meshed state, so that the modified gel is clamped, and the modified gel is conveniently turned over; after the inclined plane of No. one isosceles trapezoid piece 9 and the inclined plane separation of No. two isosceles trapezoid pieces 12, no. two isosceles trapezoid pieces 12 and push pedal 11 no longer continue to make spring 26 take place further deformation, after being overturned the right side of a pole 4 along with modified gel, no. one isosceles trapezoid piece 9 can leave No. two isosceles trapezoid pieces 12 for push pedal 11 gets back to initial position, and two splint 13 will loosen modified gel this moment, make modified gel fall on the portion of containing plate 8 top on drying cabinet 1 right side.
As an embodiment of the invention, a third rod 17 is further fixedly connected to one end of the first rod 4, which is located outside the drying box 1; a supporting plate 18 penetrates through and is connected with the back side of the drying box 1 in a sliding manner; one end of the supporting plate 18, which is positioned outside the drying box 1, is provided with a through hole 25; the third rod 17 penetrates through the through hole 25; the bottom of the supporting plate 18 is provided with an infrared drying lamp 19; in operation, when the first rod 4 rotates, the third rod 17 is made to press the support plate 18, the support plate 18 is pushed to move horizontally, and the modified gel on the top of the right accommodating plate 8 of the drying oven 1 is dried by the infrared drying lamp 19 at the bottom of the support plate 18.
As an embodiment of the present invention, a second electric cylinder 20 is fixed on the top of the supporting plate 18; a fourth rod 21 is fixedly connected with an output shaft of the second electric cylinder 20; the bottom end of the fourth rod 21 is fixedly connected with an installation plate 22; the infrared drying lamp 19 is arranged at the bottom of the mounting plate 22; the during operation, when tilting mechanism is out of work, no. two electric jars 20 will drive No. four poles 21 and mounting panel 22 downstream for infrared drying lamp 19 shortens with the distance between the modified gel, can improve drying speed, and before tilting mechanism will begin to work, no. two electric jars 20 drive No. four poles 21 upward movement, make infrared drying lamp 19 and hold the increase of distance between the board 8, avoid splint 13 and modified gel to touch infrared drying lamp 19 when the upset.
As an embodiment of the present invention, a guide post 23 is fixed to an inner wall of the drying box 1; a connecting plate 24 is fixedly connected to the top of the supporting plate 18; the guide post 23 penetrates through and is connected with the connecting plate 24 in a sliding manner; during operation, the connecting plate 24 is arranged at the top of the supporting plate 18, and the guide rod 10 penetrates through the connecting plate 24, so that the guide device has a guide effect on the movement of the supporting plate 18, and is favorable for improving the stability of the supporting plate 18 during left-right movement.
The working principle is as follows: firstly, a door of a drying box 1 is opened, modified gel is placed on the top of a containing plate 8 on the left side in the drying box 1, drying of the modified gel is achieved through irradiation of an infrared drying lamp 19, after the modified gel on the side is dried, a first electric cylinder 2 is started, the first electric cylinder 2 drives a second rod 6 to move towards the direction close to a first gear 7, a first rack 3 cannot be meshed with the first gear 7 immediately, a first isosceles trapezoid block 9 extrudes a second isosceles trapezoid block 12 before the first isosceles trapezoid block 12, the second isosceles trapezoid block 12 and a push plate 11 move towards one side close to the drying box 1, meanwhile, a spring 26 between the push plate 11 and the drying box 1 is compressed, the push plate 11 extrudes a push rod 16, the push rod 16 carries a second rack 15 to move, and the two second racks 15 move oppositely because the two second racks 15 and the second gear 14 are in a meshed state, clamping of the modified gel is achieved, and overturning of the modified gel is achieved conveniently; after the inclined plane of the first isosceles trapezoid block 9 is separated from the inclined plane of the second isosceles trapezoid block 12, the first rack 3 and the first gear 7 are engaged to move, so that the first gear 7 drives the first rod 4 to rotate, the first rod 4 drives the fixed block 5 to rotate for 180 degrees, further the modified gel moves from the containing plate 8 on the left side of the drying box 1 to the containing plate 8 on the right side of the drying box 1, and meanwhile, after the inclined plane of the first isosceles trapezoid block 9 is separated from the inclined plane of the second isosceles trapezoid block 12, the second isosceles trapezoid block 12 and the push plate 11 do not continue to enable the spring 26 to further deform, and after the modified gel is overturned to the right side of the first rod 4, the first isosceles trapezoid block 9 leaves the second isosceles trapezoid block 12, so that the push plate 11 returns to the initial position, at the moment, the clamping plate 13 loosens the modified gel, and the modified gel falls on the tops of the containing plates 8 on the right side of the drying box 1; because the modified gel is turned over, the side which is not dried is positioned right above the modified gel, and then the drying of the modified gel is continuously realized; and when the first rod 4 rotates, the third rod 17 is pressed against the support plate 18, the support plate 18 is pushed to move horizontally and to the right position of the drying oven 1, and the modified gel on the top of the right holding plate 8 of the drying oven 1 is dried by the infrared drying lamp 19 at the bottom of the support plate 18.
When tilting mechanism is out of work, no. two jars 20 will drive No. four poles 21 and mounting panel 22 downstream for distance between infrared drying lamp 19 and the modified gel shortens, can improve drying speed, and before tilting mechanism will begin to work, no. two jars 20 drive No. four poles 21 upward movement, make infrared drying lamp 19 and hold the increase of distance between the board 8, avoid splint 13 and modified gel to touch infrared drying lamp 19 when the upset.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (9)
1. The utility model provides a high specific surface area aerogel preparation facilities which characterized in that: a turnover mechanism is arranged in a drying box (1) of the device; the turnover mechanism comprises a first electric cylinder (2), a first rack (3), a first rod (4) and a fixed block (5); the first electric cylinder (2) is fixedly connected to the outer side wall of the drying box (1) through a supporting block; the output shaft of the first electric cylinder (2) is fixedly connected with a second rod (6); the first rack (3) is fixedly connected to the end part of the second rod (6); the first rod (4) penetrates through and is rotatably connected to the side wall of the drying box (1), one end, located outside the drying box (1), of the first rod (4) is sleeved and fixedly connected with a first gear (7), and the other end of the first rod is connected to the inner wall of the drying box (1) through a bearing; the fixed block (5) is fixedly connected to the surface of the second rod (6); the inner wall of drying cabinet (1) is fixedly connected with two containing plates (8), and two containing plates (8) are symmetrically arranged on two sides of second rod (6).
2. The high specific surface area aerogel preparation device of claim 1, wherein: a first isosceles trapezoid block (9) is fixedly connected to the outer wall of the second rod (6); the outer side wall of the drying box (1) is fixedly connected with a guide rod (10), and the surface of the guide rod (10) is sleeved and connected with a push plate (11) in a sliding manner; a spring (26) is sleeved on the outer wall of the guide rod (10) between the push plate (11) and the drying box (1); a second isosceles trapezoid block (12) is fixedly connected to one side, close to the first isosceles trapezoid block (9), of the push plate (11); an arc-shaped groove is formed in one side, close to the drying box (1), of the push plate (11).
3. The high specific surface area aerogel preparation device of claim 2, wherein: a cavity (27) is formed in the fixing block (5), and two through grooves (28) are symmetrically formed in one side, far away from the first rod (4), of the fixing block (5); the clamping plate (13) is connected in the through groove (28) in a sliding mode, and the length of the clamping plate (13) on one side of the fixing block (5) is larger than that of the clamping plate (13) on the other side; the center position inside the cavity (27) is rotationally connected with a second gear (14); one end of the clamping plate (13) positioned in the cavity (27) is fixedly connected with a second rack (15), and the two second racks (15) are meshed with a second gear (14); one side of the fixed block (5) close to the push plate (11) is penetrated through and is connected with a push rod (16) in a sliding mode, one end of the push rod (16) is fixedly connected with a second rack (15), and the other end of the push rod is connected in an arc-shaped groove in the side wall of the push plate (11) in a sliding mode.
4. A high specific surface area aerogel preparation apparatus as claimed in claim 1, 2 or 3, wherein: a third rod (17) is fixedly connected to one end, located outside the drying box (1), of the first rod (4); a supporting plate (18) penetrates through and is connected with the back side of the drying box (1) in a sliding manner; one end of the support plate (18) positioned outside the drying box (1) is provided with a through hole (25); the third rod (17) penetrates through the through hole (25); the bottom of the supporting plate (18) is provided with an infrared drying lamp (19).
5. The high specific surface area aerogel preparation device of claim 4, wherein: a second electric cylinder (20) is fixedly connected to the top of the supporting plate (18); a fourth rod (21) is fixedly connected with an output shaft of the second electric cylinder (20); the bottom end of the fourth rod (21) is fixedly connected with an installation plate (22); the infrared drying lamp (19) is arranged at the bottom of the mounting plate (22).
6. The high specific surface area aerogel preparation device of claim 5, wherein: the inner wall of the drying box (1) is fixedly connected with a guide post (23); the top of the supporting plate (18) is fixedly connected with a connecting plate (24); the guide post (23) penetrates through and is connected with the connecting plate (24) in a sliding mode.
7. A method for preparing high specific surface area aerogel based on the high specific surface area aerogel preparation apparatus of any of claims 1 to 6, characterized in that: the method comprises the following steps:
s1: selecting a sodium silicate solution as a high-quality silicon source, adding the sodium silicate solution into a reaction kettle, adding hydrochloric acid to adjust the pH value, and promoting the hydrolysis of the reaction to obtain silica sol;
s2: adding a homogeneous silicon source serving as a catalyst into a reaction kettle to enable silica sol to gel at normal temperature and normal pressure to obtain silica gel;
s3: and (3) adding absolute ethyl alcohol into the silica gel obtained in the S2, performing suction filtration, adding normal hexane to obtain low-surface-tension silica gel, performing hydrophobic treatment on the low-surface-tension silica gel to obtain modified gel, and finally drying the modified gel to obtain the aerogel.
8. The method for preparing high specific surface area aerogel according to claim 7, characterized in that: in the S3, the modified gel is placed in a drying oven (1).
9. The method for preparing high specific surface area aerogel according to claim 8, characterized in that: the drying oven (1) is used for drying the modified gel in an infrared drying mode.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650396A (en) * | 2019-01-28 | 2019-04-19 | 安徽科昂纳米科技有限公司 | A kind of preparation method of aerosil and aerosil obtained |
| CN209740730U (en) * | 2019-01-17 | 2019-12-06 | 黄金龙 | Silica aerogel's preparation equipment |
| CN210663704U (en) * | 2019-10-25 | 2020-06-02 | 湖北优世达科技股份有限公司 | Rotary vacuum drying machine for producing perfluoroalkyl xanthyl fluoride derivatives |
| CN111821936A (en) * | 2020-07-27 | 2020-10-27 | 刘勇 | Preparation system of silica aerogel |
| JP2021067447A (en) * | 2019-10-22 | 2021-04-30 | 舒泳軍 | Equipment for turning over and drying medicinal herb |
| CN114234591A (en) * | 2021-11-14 | 2022-03-25 | 重庆多次元新材料技术研究院有限公司 | Normal temperature and pressure drying process and equipment for aerogel |
-
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- 2022-09-09 CN CN202211104833.3A patent/CN115676840B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209740730U (en) * | 2019-01-17 | 2019-12-06 | 黄金龙 | Silica aerogel's preparation equipment |
| CN109650396A (en) * | 2019-01-28 | 2019-04-19 | 安徽科昂纳米科技有限公司 | A kind of preparation method of aerosil and aerosil obtained |
| JP2021067447A (en) * | 2019-10-22 | 2021-04-30 | 舒泳軍 | Equipment for turning over and drying medicinal herb |
| CN210663704U (en) * | 2019-10-25 | 2020-06-02 | 湖北优世达科技股份有限公司 | Rotary vacuum drying machine for producing perfluoroalkyl xanthyl fluoride derivatives |
| CN111821936A (en) * | 2020-07-27 | 2020-10-27 | 刘勇 | Preparation system of silica aerogel |
| CN114234591A (en) * | 2021-11-14 | 2022-03-25 | 重庆多次元新材料技术研究院有限公司 | Normal temperature and pressure drying process and equipment for aerogel |
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