Aerogel composite hollow air-permeable thermal insulation fabric and a preparation device thereof

Abstract

The present application relates to a kind of aerogel composite hollow air-permeable thermal insulation fabric and its preparation device, including at least two face layers, interlayer is provided between each two face layers, interlayer is composed of several size end staggered inverted aerogel microparticles, both ends of aerogel microparticle are fixed with face layer by adhesive layer, and large end of aerogel microparticle is provided with recess.The preparation device is embedded by mutual intercalation between fabric and aerogel microparticle, so that the interlayer formed by aerogel microparticle becomes hollow interlayer, and does not break, the interlayer gap formed by it is small, the gap is relatively tortuous, and the influence on thermal insulation performance is little, it can also have air-permeable effect, aerogel microparticle is arranged equidistantly on fabric by electrostatic adsorption plate, then it is adhered with face layer, and the spacing of aerogel microparticle can be accurately controlled by this mode, and it can be better embedded by mutual intercalation.

Description

Technical Field

[0001] The present invention belongs to the technical field of fabrics, and in particular relates to an aerogel composite hollow breathable thermal insulation fabric and a preparation device thereof. Background Art

[0002] Silica aerogel has great application prospects in the field of clothing fabrics due to its light weight and warmth retention characteristics. There are mostly two ways to apply aerogel in fabrics: integrating aerogel powder into fibers during spinning to make aerogel fibers, but this method may not have obvious thermal insulation properties due to the limited amount of addition; or making the aerogel into a film and combining it with the fabric through a composite process. This method can give full play to the thermal insulation properties of the aerogel and meet different thermal insulation needs by adjusting the thickness of the film.

[0003] The two combination methods each have their own advantages and disadvantages. When aerogel is used as a fabric interlayer, the thickness can reach 1-3mm according to the usage requirements. Too thick will cause the aerogel interlayer to increase its brittleness and it is difficult to ensure its softness. The Chinese utility model patent application number 201920828506.X discloses an aerogel composite hollow breathable thermal insulation fabric, which forms a micro hollow insulation layer through aerogel columnar foam. The micro hollow insulation layer has stretchability and elasticity, and also has a thermal insulation effect. The gaps between the columnar aerogels of the fabric are straight and wide, which is not conducive to thermal insulation. Summary of the Invention

[0004] The purpose of the present invention is to provide an aerogel composite hollow breathable thermal insulation fabric and a preparation device thereof in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] An aerogel composite hollow breathable thermal insulation fabric comprises at least two surface layers, with an interlayer provided between each of the two surface layers. The interlayer is composed of a plurality of aerogel particles with staggered and inverted large and small ends, and both ends of the aerogel particles are fixed to the surface layers by an adhesive layer.

[0007] As a further optimization solution of the present invention, a groove is provided at the large end of the aerogel particle.

[0008] In order to arrange aerogel particles on the surface layer in a specific posture and spacing, the present invention also proposes a device for preparing the above-mentioned aerogel composite hollow breathable thermal insulation fabric, including an operating arm assembly, and an electrostatic arrangement assembly arranged on the operating arm assembly, the electrostatic arrangement assembly includes an electrostatic adsorption plate, the bottom of the electrostatic adsorption plate is provided with an array of protrusions corresponding to the grooves, which are used to arrange the aerogel particles equidistantly with the large ends facing upwards, and the operating arm assembly is used to press the aerogel particles on the electrostatic adsorption plate onto the surface layer having an adhesion layer.

[0009] As a further optimization scheme of the present invention, it also includes a vibration and throwing mechanism, which is used to throw the aerogel particles upward so that the aerogel particles are close to the bottom end of the electrostatic adsorption plate, including a box body, a longitudinal vibration source is provided at the bottom of the box body, and a buffer leg is also provided at the bottom end of the box body. The buffer leg has a telescopic structure in the vertical direction, and a buffer spring is provided in the telescopic structure. The vibration and throwing mechanism is used to throw the aerogel particles in the box body, and the amplitude of the vibration and throwing is controlled by existing technical means, so that the aerogel particles are thrown upward to a fixed height, and approach the electrostatic adsorption plate at the highest height, that is, when the speed is zero, and are electrostatically adsorbed on the lower surface of the electrostatic adsorption plate.

[0010] As a further optimization scheme of the present invention, the operating arm assembly includes a rotating seat, an L-shaped bracket arranged on the rotating seat, a lifting cylinder arranged at the end of the bracket, and a lifting arm at the output end of the lifting cylinder. The operating arm assembly is used to drive the electrostatic adsorption plate to press the arranged and adsorbed aerogel particles onto the surface of the fabric, wherein the fabric is transported by other conveying mechanisms and coated with an adhesion layer.

[0011] As a further optimization scheme of the present invention, a lateral vibration source is provided on the upper surface of the electrostatic adsorption plate, and a lateral sliding structure is provided at the connection between the electrostatic adsorption plate and the operating arm assembly to provide lateral vibration space for the electrostatic adsorption plate, and the sliding structure has a locking and resetting structure. In order to make the electrostatic adsorption effect better, the grooves of the aerogel particles are adsorbed by the protrusions. This scheme further provides a lateral vibration source, so that the electrostatic adsorption plate vibrates laterally when adsorbing aerogel particles, and throws out aerogel particles with incorrect adsorption posture. Among them, the charge of the electrostatic adsorption plate is more likely to accumulate at the protrusions, and the other surfaces of the aerogel particles can only have point contact with the protrusions, and only the grooves are in surface contact with the protrusions. Therefore, the lateral vibration can throw out the aerogel that is not firmly adsorbed.

[0012] As a further optimization scheme of the present invention, the sliding structure includes a first slider fixedly connected to the electrostatic adsorption plate, a second slider slidably connected to the first slider, and a first slide rail slidably connected to the second slider, wherein the first slide rail is connected to the operating arm assembly through a fixed column, and a second slide rail slidably connected to the first slider is provided at the bottom of the second slider, and the first slide rail is perpendicular to the second slide rail. This scheme further provides a sliding structure so that the electrostatic adsorption plate can have a vibration space, and through two mutually perpendicular slide rails, the electrostatic adsorption plate has a swinging lateral vibration posture, so as to facilitate the removal of aerogel particles with incorrect adsorption posture.

[0013] As a further optimization solution of the present invention, the first slide rail and the second slide rail are both dovetail-shaped slide bars.

[0014] As a further optimization scheme of the present invention, the locking and resetting structure includes a sliding rod slidably arranged inside the fixed column, and a telescopic cylinder arranged on the surface of the fixed column for driving the sliding rod, wherein the sliding rod passes through the first slide rail, the second slider, and the second slide rail in sequence, and a conical first limit groove is opened inside the second slider, and a conical second limit groove is opened inside the first slider. The surface of the sliding rod is provided with two conical limit blocks corresponding to the first limit groove and the second limit groove respectively. Since the operating arm assembly also needs to accurately press the aerogel particles on the electrostatic adsorption plate onto the fabric surface, in order to reset and lock the vibrating electrostatic adsorption plate, this scheme provides a conical limit groove and a limit block. When the telescopic cylinder drives the sliding rod to slide, the limit block leaves the limit groove, so that the second slider and the first slider have lateral vibration space, and the vibration amplitude can also be limited. When the limit block presses the limit groove, the first slider and the second slider are returned to their positions and locked, so as to facilitate the subsequent pressing process.

[0015] The beneficial effects of the present invention are:

[0016] By interlocking the fabric and aerogel particles, the interlayer formed by the aerogel particles becomes a hollow interlayer and will not break. The interlayer gap formed is small and the gap is relatively tortuous, which has little effect on the thermal insulation performance and can also have a breathable effect. The aerogel particles are evenly arranged on the fabric through the electrostatic adsorption plate and then adhered to the surface layer. This method allows the spacing between the aerogel particles to be precisely controlled and can better interlock with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic cross-sectional view of the fabric of the present invention;

[0018] Figure 2 The present invention Figure 1 Enlarged view of part A;

[0019] Figure 3 The present invention Figure 1 Schematic diagram of the two surface layers before being pressed together;

[0020] Figure 4 Schematic diagram of the distribution of aerogel particles of the present invention;

[0021] Figure 5 It is a schematic diagram of the preparation device of the present invention;

[0022] Figure 6 The present invention Figure 5 A magnified view of the structure of part B;

[0023] Figure 7 It is a schematic diagram of the sliding structure of the present invention;

[0024] Figure 8is a cross-sectional view of the sliding structure of the present invention;

[0025] In the figure: 11. surface layer; 12. adhesion layer; 13. aerogel particles; 14. groove; 2. base; 3. vibration and polishing mechanism; 31. box; 32. buffer legs; 33. longitudinal vibration source; 4. operating arm assembly; 41. rotating seat; 42. bracket; 43. lifting cylinder; 44. lifting arm; 5. electrostatic arrangement assembly; 51. electrostatic adsorption plate; 52. first slider; 53. second slider; 54. fixed column; 55. first slide rail; 56. second slide rail; 57. first limit slot; 58. second limit slot; 59. slide rod; 510. limit block; 511. telescopic cylinder; 512. transverse vibration source; 513. protrusion. DETAILED DESCRIPTION

[0026] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0027] Example 1

[0028] like Figure 1-8 As shown, an aerogel composite hollow breathable thermal insulation fabric includes at least two surface layers 11, with an interlayer provided between each two surface layers 11. The interlayer is composed of a plurality of aerogel particles 13 with inverted large and small ends staggered. Both ends of the aerogel particles 13 are fixed to the surface layer 11 by an adhesive layer 12. The large end of the aerogel particle 13 is provided with a groove 14. The aerogel particles 13 can be mass-produced by 3D printing. This technology has been maturely applied and is not described in detail in this embodiment.

[0029] The fabrics in this solution are embedded in the gaps, so that the interlayer formed by the aerogel particles 13 becomes a hollow interlayer, which will not break. The interlayer gap formed is small and the gap is relatively tortuous, which has little effect on the thermal insulation performance and can also have a breathable effect.

[0030] In order to arrange the aerogel particles 13 on the surface layer 11 in a specific posture and spacing, the present invention also proposes a device for preparing the above-mentioned aerogel composite hollow breathable thermal insulation fabric, including an operating arm assembly 4, and an electrostatic arrangement assembly 5 arranged on the operating arm assembly 4. The electrostatic arrangement assembly 5 includes an electrostatic adsorption plate 51. The bottom of the electrostatic adsorption plate 51 is provided with an array of protrusions 513 corresponding to the grooves 14, which are used to arrange the aerogel particles 13 equidistantly with the large ends facing upward. The operating arm assembly 4 is used to press the aerogel particles 13 on the electrostatic adsorption plate 51 onto the surface layer 11 having the adhesion layer 12.

[0031] The function of this device is to arrange aerogel particles 13 on the fabric at equal intervals. Since the aerogel particles 13 are small, their arrangement spacing is difficult to control. Therefore, the aerogel particles 13 are first arranged by electrostatic adsorption and then adhered to the surface layer 11. This method allows the spacing of the aerogel particles 13 to be precisely controlled and can better fit together.

[0032] It also includes a vibration throwing mechanism 3, which is used to throw the aerogel particles 13 upward so that the aerogel particles 13 are close to the bottom end of the electrostatic adsorption plate 51. It includes a box body 31, and a longitudinal vibration source 33 is provided at the bottom of the box body 31. The bottom end of the box body 31 is also provided with a buffer leg 32. The buffer leg 32 has a telescopic structure in the vertical direction, and a buffer spring is provided in the telescopic structure. The vibration throwing mechanism 3 is used to throw the aerogel particles 13 in the box body 31, and the amplitude of the vibration throwing is controlled by existing technical means, so that the aerogel particles 13 are thrown upward to a fixed height, and approach the electrostatic adsorption plate 51 at the highest height, that is, when the speed is zero, and are adsorbed on the lower surface of the electrostatic adsorption plate 51.

[0033] The operating arm assembly 4 includes a rotating base 41, an L-shaped bracket 42 arranged on the rotating base 41, a lifting cylinder 43 arranged at the end of the bracket 42, and a lifting arm 44 at the output end of the lifting cylinder 43. The operating arm assembly 4 is used to drive the electrostatic adsorption plate 51 to press the arranged and adsorbed aerogel particles 13 onto the surface of the surface layer 11, wherein the surface layer 11 is transported by other conveying mechanisms and coated with an adhesive layer 12 to facilitate fixing the aerogel particles 13.

[0034] A lateral vibration source 512 is provided on the upper surface of the electrostatic adsorption plate 51, and a lateral sliding structure is provided at the connection between the electrostatic adsorption plate 51 and the operating arm assembly 4 to provide lateral vibration space for the electrostatic adsorption plate 51, and the sliding structure has a locking and resetting structure. In order to make the electrostatic adsorption effect better, the groove 14 of the aerogel particle 13 is adsorbed by the protrusion 513. The present scheme further provides a lateral vibration source 512, so that the electrostatic adsorption plate 51 vibrates laterally when adsorbing the aerogel particles 13, and the aerogel particles 13 with incorrect adsorption posture are thrown out. Among them, the charge of the electrostatic adsorption plate 51 is more likely to accumulate at the protrusion 513, and the other surfaces of the aerogel particles 13 can only be in point contact with the protrusion 513, and only the groove 14 is in surface contact with the protrusion 513. Therefore, the lateral vibration can throw out the aerogel particles 13 that are not firmly adsorbed.

[0035] The sliding structure includes a first slider 52 fixedly connected to the electrostatic adsorption plate 51, a second slider 53 slidably connected to the first slider 52, and a first slide rail 55 slidably connected to the second slider 53, wherein the first slide rail 55 is connected to the operating arm assembly 4 through a fixed column 54, and a second slide rail 56 slidably connected to the first slider 52 is provided at the bottom of the second slider 53. The first slide rail 55 is perpendicular to the second slide rail 56. This solution further provides a sliding structure so that the electrostatic adsorption plate 51 can have a vibration space. Through two mutually perpendicular slide rails, the electrostatic adsorption plate 51 has a swinging lateral vibration posture, so as to facilitate the removal of aerogel particles 13 with incorrect adsorption posture. The first slide rail 55 and the second slide rail 56 are both dovetail-shaped slides.

[0036] The locking and resetting structure includes a slide rod 59 slidably arranged inside the fixed column 54, and a telescopic cylinder 511 arranged on the surface of the fixed column 54 for driving the slide rod 59, wherein the slide rod 59 sequentially passes through the first slide rail 55, the second slider 53, and the second slide rail 56, and the second slider 53 is provided with a first truncated cone-shaped limiting groove 57, and the first slider 52 is provided with a second truncated cone-shaped limiting groove 58. The surface of the slide rod 59 is provided with two truncated cone-shaped limiting blocks 510 corresponding to the first limiting groove 57 and the second limiting groove 58. Since the operating arm assembly 4 also needs In order to accurately press the aerogel particles 13 on the electrostatic adsorption plate 51 onto the surface of the surface layer 11, and to reset and lock the electrostatic adsorption plate 51 after vibration, this solution provides a conical limit groove and a limit block 510. When the telescopic cylinder 511 drives the slide rod 59 to slide, the limit block 510 leaves the limit groove, so that the second slider 53 and the first slider 52 have lateral vibration space, and the vibration amplitude can also be limited. When the limit block 510 presses the limit groove, the first slider 52 and the second slider 53 are returned to their positions and locked, so as to facilitate the subsequent pressing process.

[0037] The specific implementation method is as follows: the box 31 continuously throws the aerogel particles 13 to arrange the aerogel particles 13 array at the bottom of the electrostatic adsorption plate 51, and then the operating arm 4 presses the electrostatic adsorption plate 51 onto the surface layer 11 coated with the adhesive layer 12, and then Figure 3 The two surface layers 11 shown are interlocked with each other. When interlocking, the surface layers 11 can be interlocked row by row from one side to the other by using a zipper interlocking method, so as to finally achieve Figure 1 The state shown is that the fabric preparation is completed.

[0038] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A device for preparing an aerogel composite hollow breathable thermal insulation fabric, used for preparing the following fabric: the fabric comprises at least two surface layers (11), a sandwich layer is provided between each of the two surface layers (11), the sandwich layer is composed of a plurality of aerogel particles (13) with large and small ends staggered and inverted, both ends of the aerogel particles (13) are fixed to the surface layer (11) by an adhesive layer (12), and the large end of the aerogel particle (13) is provided with a groove (14), characterized in that: The preparation device comprises an operating arm assembly (4), and an electrostatic arrangement assembly (5) arranged on the operating arm assembly (4), wherein the electrostatic arrangement assembly (5) comprises an electrostatic adsorption plate (51), wherein the bottom of the electrostatic adsorption plate (51) is provided with protrusions (513) corresponding to the grooves (14) in an array, and is used to arrange the aerogel particles (13) at equal intervals with their large ends facing upwards, and the operating arm assembly (4) is used to press the aerogel particles (13) on the electrostatic adsorption plate (51) onto a surface layer (11) having an adhesive layer (12); The device further comprises a vibration throwing mechanism (3) for throwing the aerogel particles (13) upwards so that the aerogel particles (13) are close to the bottom end of the electrostatic adsorption plate (51), and comprises a box body (31). A longitudinal vibration source (33) is provided at the bottom of the box body (31). A buffer leg (32) is also provided at the bottom end of the box body (31). The buffer leg (32) has a telescopic structure in the vertical direction, and a buffer spring is provided in the telescopic structure.

2. The device for preparing an aerogel composite hollow breathable thermal insulation fabric according to claim 1, characterized in that: The operating arm assembly (4) comprises a rotating seat (41), an L-shaped bracket (42) arranged on the rotating seat (41), a lifting cylinder (43) arranged at the end of the bracket (42), and a lifting arm (44) at the output end of the lifting cylinder (43).

3. The device for preparing an aerogel composite hollow breathable thermal insulation fabric according to claim 1, characterized in that: A transverse vibration source (512) is provided on the upper surface of the electrostatic adsorption plate (51), and a transverse sliding structure is provided at the connection between the electrostatic adsorption plate (51) and the operating arm assembly (4) to provide a transverse vibration space for the electrostatic adsorption plate (51), and the sliding structure has a locking and resetting structure.

4. The device for preparing an aerogel composite hollow breathable thermal insulation fabric according to claim 3, characterized in that: The sliding structure comprises a first slider (52) fixedly connected to the electrostatic adsorption plate (51), a second slider (53) slidably connected to the first slider (52), and a first slide rail (55) slidably connected to the second slider (53), wherein the first slide rail (55) is connected to the operating arm assembly (4) through a fixed column (54), and a second slide rail (56) slidably connected to the first slider (52) is provided at the bottom of the second slider (53), and the first slide rail (55) and the second slide rail (56) are perpendicular to each other.

5. The device for preparing an aerogel composite hollow breathable thermal insulation fabric according to claim 4, characterized in that: The first slide rail (55) and the second slide rail (56) are both dovetail-shaped slide bars.

6. The device for preparing an aerogel composite hollow breathable thermal insulation fabric according to claim 3, characterized in that: The locking and resetting structure includes a sliding rod (59) slidably arranged inside the fixed column (54), and a telescopic cylinder (511) arranged on the surface of the fixed column (54) for driving the sliding rod (59), wherein the sliding rod (59) sequentially passes through the first slide rail (55), the second slider (53), and the second slide rail (56), and a first truncated cone-shaped limiting groove (57) is provided inside the second slider (53), and a second truncated cone-shaped limiting groove (58) is provided inside the first slider (52), and two truncated cone-shaped limiting blocks (510) corresponding to the first limiting groove (57) and the second limiting groove (58) are provided on the surface of the sliding rod (59).

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