Device and method for preparing aerogel and graphene skin-friendly breathable warm-keeping fabric

Abstract

The invention relates to a device and a method for preparing aerogel and graphene skin-friendly breathable warm-keeping fabric. The device comprises two fixing frames which are symmetrically arranged, a sliding seat which is in sliding connection with the fixing frames, at least two telescopic pieces which are symmetrically arranged on the sliding seat front and back, connecting supports which are arranged at the telescopic ends of the telescopic pieces, and two pressing plates which are arranged on the opposite sides of the two connecting supports respectively. The two connecting supports are pushed through the telescopic piece, the pressing plates get close to each other, and the two connecting supports can drive the stirring assemblies to operate while moving in the opposite directions so as to stir the supporting strips located at the positions of the convex parts of the pressing plates to the positions between the two symmetrical hot pressing pieces close to the supporting strips. Then the supporting strip, the composite aerogel layer, the wrapping piece and one side of the vertical supporting piece are fixed together in a hot-pressing mode through hot-pressing pieces at the concave positions of two pressing plates to form a middle shrinkage shape, and therefore the fabric which is good in mechanical property and capable of keeping good air permeability is prepared.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothing fabrics, and in particular relates to a device and method for preparing aerogel and graphene skin-friendly, breathable and warm-keeping fabrics. Background Art

[0002] The high porosity of graphene and aerogel means that there is more space inside the fabric for air circulation, thereby improving the breathability of the fabric. In addition, due to the presence of more pores, heat conduction can be isolated and heat loss can be reduced to achieve better warmth retention. In the prior art, polyvinyl alcohol (PVA) is generally combined with graphene oxide to prepare an electrospinning solution, and then an electrospinning technology is used to prepare a composite layer of aerogel and graphene between a skin-friendly and breathable base / inner layer fabric and an outer layer fabric. Then, in order to improve the tear resistance and anti-down drilling effects of the fabric, the three layers of fabric are also subjected to heat pressing and shaping treatment.

[0003] However, in the prior art, the device for hot pressing fabrics is generally a hot pressing roller, and its method of use is to overlap the fabrics and then continuously hot press the overlapped fabrics through the hot pressing roller. However, continuous hot pressing of the fabrics with the hot pressing roller will destroy the pores of the aerogel graphene composite layer, and the upper and lower walls of the pores will be bonded after hot pressing, which greatly reduces the pores and thus reduces the air permeability of the fabric. Therefore, we propose a preparation device and method for aerogel and graphene skin-friendly, breathable and warm fabrics to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for preparing aerogel and graphene skin-friendly, breathable and warm-keeping fabrics in order to solve the above-mentioned problems.

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

[0006] A preparation device for aerogel and graphene skin-friendly, breathable and warm-keeping fabrics, comprising two symmetrically arranged fixing frames, a sliding seat slidably connected to the fixing frames, at least two telescopic parts symmetrically arranged on the sliding seat front and back, a connecting bracket arranged at the telescopic end of the telescopic part, and two pressing plates respectively arranged on opposite sides of the two connecting brackets, each of the pressing plates having a continuously alternating concave portion and a convex portion on the opposite side, a hot pressing sheet being arranged on the concave portion of the pressing plate, a plurality of guide limiters being arranged between the sliding seat and the connecting bracket, and a toggle assembly being arranged on the connecting bracket.

[0007] As a further optimization solution of the present invention, baffles are symmetrically arranged at the front and rear ends of the two connecting brackets;

[0008] The toggling component connection bracket includes at least two limit seats symmetrically arranged before and after on the sliding seat and penetrating the connection bracket, a moving rod slidably connected to the limit seats, several toggling rods provided on the moving rod, and protrusions provided on the baffle. Rolling shafts are rotatably connected to one end of the moving rod close to the protrusions.

[0009] As a further optimized solution of the present invention, the protrusions on the baffles at the front and rear ends of the connection bracket are arranged staggeredly so that the connection bracket alternately pushes the moving rod during the reciprocating movement.

[0010] As a further optimized solution of the present invention, the sliding seat, the connection bracket, the pressing plate, and the moving rod are all two-piece structures symmetrically arranged before and after, and the symmetrically arranged sliding seat, connection bracket, pressing plate, and moving rod are inserted and fixed to each other.

[0011] As a further optimized solution of the present invention, the guiding and limiting member includes a fixed seat provided on the sliding seat, a guiding rod provided on the fixed seat and penetrating the connection bracket, and a spring provided between the fixed seat and the connection bracket and sleeved outside the guiding rod.

[0012] A method for preparing aerogel and graphene skin-friendly breathable and warm fabric by using a preparation device is as follows:

[0013] Step 1: Stack the obtained inner layer and outer layer with the support layer 1, support layer 2, wrapping piece, support strip, and composite aerogel layer corresponding to each other, and place the obtained vertical support member with a hollow inside between the corresponding upper and lower wrapping pieces.

[0014] Step 2: Extend the two connection brackets, pressing plates, and hot pressing sheets into the inner hollows of the two symmetric vertical support members respectively. Push the two connection brackets closer to each other through the telescopic member. At the same time, when the two connection brackets move towards each other, they will drive the toggling component to operate to toggle the support strip at each convex part position of the pressing plate to between the two symmetric hot pressing sheets close to it. The support strip, composite aerogel layer, wrapping piece, and one side of the vertical support member are hot pressed and fixed together by the hot pressing sheet to form a middle constricted shape.

[0015] Step 3: Hot press and fix the inner layer, outer layer, and the other side of the support layer 1, support layer 2, and vertical support member together, and sew the outer edges of the inner layer and outer layer together to obtain the breathable and warm fabric.

[0016] As a further optimized solution of the present invention, in Step 2, the temperature of the hot pressing treatment is 95 - 110 °C, the hot pressing pressure is 2 - 4 MPa, the number of hot pressing times is 2 - 4 times, and the hot pressing time for each time is 4 - 6 min.

[0017] As a further optimization scheme of the present invention, in step three, the temperature of the hot pressing treatment is 145-165°C, the hot pressing pressure is 4-7MPa, the number of hot pressing times is 3-5 times, and the hot pressing time for each time is 5-8min.

[0018] The beneficial effects of the present invention are:

[0019] 1) In the present invention, the two connecting brackets and the pressing plate are pushed closer to each other by the telescopic member, and the two connecting brackets also drive the shifting assembly to shift the support bar located at each convex part of the pressing plate to between two mutually symmetrical heat pressing plates close thereto, and then the support bar, the composite aerogel layer, the wrapping member, and one side of the vertical support member are fixed together by heat pressing through the heat pressing plates at the concave parts of the two pressing plates to form a contracted shape in the middle, thereby preparing a fabric with good mechanical properties, good tear resistance, and good air permeability;

[0020] 2) The connecting brackets of the present invention move toward each other, driving the baffle connected to the connecting bracket to move together, and the moving rod and the toggle rod are pushed to move through the protrusions on the baffle. The support bar located at each protrusion of the pressing plate is moved between two symmetrical heat-pressing plates close to it through the movement of the toggle rod. Then, the upper and lower symmetrical support bars, composite aerogel layers, and wrapping pieces will be funnel-shaped after hot pressing and fixing, and there will be gaps between the front and rear adjacent funnel-shaped support bars, composite aerogel layers, and wrapping pieces. The existence of the gap allows the fabric to have better air permeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention (the hot pressed parts are in a separated state).

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention (the hot pressed part is in a pressed state).

[0023] Figure 3 The present invention Figure 1 A-section structure enlarged view.

[0024] Figure 4 It is a front cross-sectional schematic diagram of the aerogel and graphene skin-friendly, breathable and warm-keeping fabric of the present invention.

[0025] Figure 5 Schematic diagram of the cross section of the composite middle layer of the present invention.

[0026] In the figure: 1. Inner layer; 2. Composite middle layer; 21. First support layer; 22. Second support layer; 23. Support bar; 24. Composite aerogel layer; 25. Wrapping piece; 26. Vertical support piece; 3. Outer layer; 4. Fixing frame; 5. Sliding seat; 6. Fixed seat; 7. Telescopic member; 8. Connecting bracket; 9. Guide rod; 10. Spring; 11. Pressing plate; 12. Hot pressing sheet; 13. Limit seat; 14. Moving rod; 15. Poking rod; 16. Protrusion; 17. Rolling shaft. Detailed implementation mode

[0027] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation modes are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0028] I. Materials

[0029] 1. In the present application, the inner layer 1 is a commercially available pure cotton fabric, and the outer layer 3 is a commercially available 210T polyester pongee fabric.

[0030] 2. In the present application, in the aerogel spinning solution containing volcanic rock and graphene, the mass ratio of PVA (polyvinyl alcohol) to graphene oxide is 10:1.

[0031] The methods used in this embodiment are all conventional methods known to those skilled in the art without special instructions. The reagents and other materials used are all commercially available products without special instructions.

[0032] II. Methods

[0033] As Figures 1 - 3 shown, a preparation device for an aerogel and graphene skin-friendly, breathable and warm fabric includes two symmetrically arranged fixing frames 4, a sliding seat 5 slidably connected to the fixing frames 4, at least two telescopic members 7 symmetrically arranged front and back on the sliding seat 5, a connecting bracket 8 provided at the telescopic end of the telescopic member 7, and two pressing plates 11 respectively provided on the opposite sides of the two connecting brackets 8. The opposite sides of each pressing plate 11 are continuously and alternately connected with concave portions and convex portions. A hot pressing sheet 12 is provided on the concave portion of the pressing plate 11. A plurality of guiding and limiting members are provided between the sliding seat 5 and the connecting bracket 8, and a poking assembly is provided on the connecting bracket 8.

[0034] It should be noted that in this embodiment, the telescopic member 7 is an electric push rod.

[0035] Preferably, baffles are symmetrically arranged at the front and rear ends of the two connecting brackets 8;

[0036] The toggle component connecting bracket 8 includes at least two limit seats 13 symmetrically arranged front and back on the sliding seat 5 and penetrating the connecting bracket 8, a moving rod 14 slidably connected to the limit seat 13, several toggle rods 15 arranged on the moving rod 14, and a protrusion 16 arranged on the baffle. A rolling shaft 17 is rotatably connected to one end of the moving rod 14 close to the protrusion 16.

[0037] Preferably, the protrusions 16 on the baffles at the front and back ends of the connecting bracket 8 are arranged staggeredly to alternately push the moving rod 14 during the reciprocating movement of the connecting bracket 8, that is, as Figures 1 - 2 shown, the two protrusions 16 on the baffles at the rear ends of the two connecting brackets 8 are symmetrically arranged, and the two protrusions 16 on the baffles at the front ends of the two connecting brackets 8 are symmetrically arranged. However, the protrusions 16 on the baffles at the front and back ends of the same connecting bracket 8 are arranged staggeredly. When the telescopic member 7 drives the connecting brackets 8 to move towards each other, the moving rod 14 is pushed forward by the protrusions 16 on the two rear baffles. When the telescopic member 7 drives the connecting brackets 8 to move away from each other, the moving rod 14 is pushed backward by the protrusions 16 on the two front baffles, thereby realizing the function of alternately pushing the moving rod 14.

[0038] Furthermore, the sliding seat 5, the connecting bracket 8, the pressing plate 11, and the moving rod 14 are all two-piece structures that are symmetrically arranged front and back. The sliding seat 5, the connecting bracket 8, the pressing plate 11, and the moving rod 14 that are symmetrically arranged front and back are inserted and fixed to each other, which is convenient for the sliding seat 5, the connecting bracket 8, the pressing plate 11, and the moving rod 14 to be removed from the inner layer 1 and the outer layer 3.

[0039] Furthermore, the guiding and limiting member includes a fixed seat 6 arranged on the sliding seat 5, a guiding rod 9 arranged on the fixed seat 6 and penetrating the connecting bracket 8, and a spring 10 arranged between the fixed seat 6 and the connecting bracket 8 and sleeved outside the guiding rod 9.

[0040] As Figures 4 - 5 shown, the aerogel and graphene skin-friendly, breathable and warm fabric of the present invention includes an inner layer 1, an outer layer 3, and a composite middle layer 2 arranged between the inner layer 1 and the outer layer 3;

[0041] The composite middle layer 2 includes a support layer one 21 and a support layer two 22 respectively arranged on the opposite sides of the inner layer 1 and the outer layer 3. The support layer one 21 and the support layer two 22 are both concave and convex parts connected alternately. The concave and convex parts of the support layer one 21 and the support layer two 22 correspond to each other. A plurality of wrapping members 25 are symmetrically arranged left and right on the inner walls of the concave parts of the support layer one 21 and the support layer two 22. A plurality of support bars 23 are arranged between the wrapping members 25 that are symmetrically arranged left and right. A composite aerogel layer 24 is formed between the support bars 23;

[0042] A vertical support member 26 for supporting the package 25 is provided between the packages 25 corresponding up and down. The middle part of the vertical support member 26 is hollow. The outer wall of the vertical support member 26 is attached to the side of the package 25. Pressing parts extend outward from both sides of the vertical support member 26;

[0043] The package 25 is two continuously connected sides. The support strips 23 on the first support layer 21 and the second support layer 22 and the sides of the four packages 25 close to the support strip 23 are hot-pressed into a shape with a contracted middle part. The sides of the package 25 close to the support strip 23 are wrapped around the support strip 23 and the composite aerogel layer 24 in a surrounding shape. The other side of the package 25 is arranged between the corresponding convex parts of the first support layer 21 and the second support layer 22 and is hot-pressed and fixed together.

[0044] The first support layer 21, the second support layer 22, the support strip 23, the package 25, and the vertical support member 26 are all made of polyamide material or polypropylene material. The composite aerogel layer 24 is made of graphene oxide and PVA material.

[0045] It should be noted that in this embodiment, the inner layer 1, the composite middle layer 2, and the outer layer 3 at both ends of the cavity are all sewn and fixed together by cotton fiber threads;

[0046] In this embodiment, the first support layer 21, the second support layer 22, the support strip 23, the package 25, and the vertical support member 26 are all obtained by integral molding and extrusion through a mold. And a composite aerogel layer 24 is formed between the support strips 23 of the inner layer 1 and the outer layer 3 respectively by electrospinning technology using an aerogel spinning solution containing graphene oxide;

[0047] In this embodiment, the inner layer 1 is made of pure cotton fabric. The pure cotton fabric is made of natural cotton fibers and has the characteristics of being soft, skin-friendly, and breathable.

[0048] A method for preparing an aerogel and graphene skin-friendly, breathable and warm fabric using a preparation device for an aerogel and graphene skin-friendly, breathable and warm fabric, the specific steps are as follows:

[0049] Step 1: Stack the obtained inner layer 1 and outer layer 3 with the first support layer 21, the second support layer 22, the package 25, the support strip 23, and the composite aerogel layer 24 corresponding to each other. Place the obtained vertical support member 26 with a hollow inside between the packages 25 corresponding up and down;

[0050] Step 2: Extend the two connecting brackets 8, the pressing plate 11, and the hot pressing sheet 12 to the inner hollows of the two symmetrical vertical support members 26 respectively, and push the two connecting brackets 8 to approach each other through the telescopic member 7. At the same time, when the two connecting brackets 8 move toward each other, they will drive the toggle assembly to move the support bar 23 located at each convex position of the pressing plate 11 to between the two symmetrical hot pressing sheets 12 close to it, and the support bar 23, the composite aerogel layer 24, the wrapping member 25, and one side of the vertical support member 26 are hot-pressed and fixed together by the hot pressing sheet 12 to form a contracted shape in the middle;

[0051] Step 3: fix the inner layer 1, outer layer 3, support layer 1 21, support layer 2 22, and the other side of the vertical support member 26 together by heat pressing, and sew the outer edges of the inner layer 1 and outer layer 3 together to obtain a breathable and warm fabric.

[0052] In step 2, the temperature of the hot pressing treatment is 95-110°C, the hot pressing pressure is 2-4MPa, the number of hot pressing times is 2-4 times, and the hot pressing time for each time is 4-6min. Preferably, the temperature of the hot pressing treatment is 110°C, the hot pressing pressure is 3MPa, the number of hot pressing times is 3 times, and the hot pressing time for each time is 6min.

[0053] In step three, the temperature of the hot pressing treatment is 145-165°C, the hot pressing pressure is 4-7MPa, the number of hot pressing times is 3-5 times, and the time of each hot pressing is 5-8min. Preferably, the temperature of the hot pressing treatment is 165°C, the hot pressing pressure is 7MPa, the number of hot pressing times is 4 times, and the time of each hot pressing is 5min.

[0054] It should be noted that in the present application, the equipment used for hot pressing treatment of the inner layer 1, the outer layer 3, the support layer 1 21, the support layer 2 22, and the other side of the vertical support member 26 is a hot pressing roller, and the above-mentioned aerogel and graphene skin-friendly, breathable and warm fabric preparation device is only used for the hot pressing treatment operation in step two.

[0055] In the present invention, the connecting bracket 8 moves toward each other and drives the baffle connected to the connecting bracket 8 to move together, and the protrusion 16 on the baffle pushes the moving rod 14 and the toggle rod 15 to move, and the toggle rod 15 moves the support bar 23 located at each protrusion position of the pressing plate 11 to between two mutually symmetrical hot pressing sheets 12 close to it, and then the hot pressing sheet 12 is used to hot-press and fix the support bar 23, the composite aerogel layer 24, the wrapping member 25, and one side of the vertical support member 26 together to form a contracted shape in the middle, so that the hot-pressed wrapping member 25 will be wrapped in the support bar 23, the composite aerogel layer On the outside of 24, the upper and lower symmetrical support strips 23, composite aerogel layers 24, and wrapping pieces 25 are funnel-shaped, narrow in the middle and wide at both ends, and the front and rear adjacent funnel-shaped support strips 23, composite aerogel layers 24, and wrapping pieces 25 will not be bonded to each other because no hot pressing sheet 12 is provided at the convex portion of the connecting bracket 8. That is to say, there will be gaps between the front and rear adjacent funnel-shaped support strips 23, composite aerogel layers 24, and wrapping pieces 25, so that the fabric finally prepared can have better mechanical properties, and because of the presence of more gaps, the fabric can also have better air permeability.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A preparation device for aerogel and graphene skin-friendly, breathable and warm-keeping fabric, characterized in that: The invention comprises two symmetrically arranged fixing frames (4), a sliding seat (5) slidably connected to the fixing frames (4), at least two telescopic members (7) symmetrically arranged on the sliding seat (5) in front and back directions, a connecting bracket (8) arranged at the telescopic end of the telescopic member (7), and two pressing plates (11) respectively arranged on opposite sides of the two connecting brackets (8), each of the pressing plates (11) having a continuously alternately connected concave portion and convex portion on the opposite side, a hot pressing sheet (12) being arranged on the concave portion of the pressing plate (11), a plurality of guide limit members being arranged between the sliding seat (5) and the connecting bracket (8), and a toggle assembly being arranged on the connecting bracket (8).

2. The device for preparing aerogel and graphene skin-friendly, breathable and warm-keeping fabric according to claim 1, characterized in that: Baffles are symmetrically arranged at the front and rear ends of the two connecting brackets (8); The toggle assembly connecting bracket (8) comprises at least two limit seats (13) symmetrically arranged on the sliding seat (5) and penetrating the connecting bracket (8), a moving rod (14) slidably connected to the limit seat (13), a plurality of toggle rods (15) arranged on the moving rod (14), and a protrusion (16) arranged on the baffle, and one end of the moving rod (14) close to the protrusion (16) is rotatably connected to a rolling shaft (17).

3. The device for preparing aerogel and graphene skin-friendly, breathable and warm-keeping fabric according to claim 2, characterized in that: The protrusions (16) on the baffles at the front and rear ends of the connecting bracket (8) are staggered to allow the connecting bracket (8) to push the moving rod (14) alternately during the reciprocating movement.

4. The device for preparing aerogel and graphene skin-friendly, breathable and warm-keeping fabric according to claim 2, characterized in that: The sliding seat (5), the connecting bracket (8), the pressing plate (11) and the moving rod (14) are all two-stage structures that are symmetrical in front and back, and the sliding seat (5), the connecting bracket (8), the pressing plate (11) and the moving rod (14) that are symmetrical in front and back are plugged and fixed to each other.

5. The device for preparing aerogel and graphene skin-friendly, breathable and warm-keeping fabric according to claim 1, characterized in that: The guide limiter comprises a fixed seat (6) arranged on the sliding seat (5), a guide rod (9) arranged on the fixed seat (6) and penetrating the connecting bracket (8), and a spring (10) arranged between the fixed seat (6) and the connecting bracket (8) and sleeved on the outside of the guide rod (9).

6. A method for preparing aerogel and graphene skin-friendly, breathable and warm-keeping fabrics using the preparation device according to any one of claims 1 to 5, characterized in that: The specific steps are as follows: Step 1: The prepared inner layer (1) and outer layer (3) having a support layer 1 (21), a support layer 2 (22), a wrapping member (25), a support strip (23), and a composite aerogel layer (24) are placed in correspondence with each other, and the prepared internally hollow vertical support member (26) is placed between the corresponding wrapping members (25) above and below; Step 2: The two connecting brackets (8), the pressing plate (11), and the hot pressing sheet (12) are respectively extended to the inner hollows of the two symmetrical vertical support members (26), and the two connecting brackets (8) are pushed closer to each other by the telescopic member (7). At the same time, when the two connecting brackets (8) move toward each other, the shifting assembly is driven to shift the support bar (23) located at each convex position of the pressing plate (11) to between the two symmetrical hot pressing sheets (12) close thereto, and the support bar (23), the composite aerogel layer (24), the wrapping member (25), and one side of the vertical support member (26) are fixed together by hot pressing by the hot pressing sheet (12) to form a contracted shape in the middle; Step 3: The inner layer (1), the outer layer (3), the support layer 1 (21), the support layer 2 (22), and the other side of the vertical support member (26) are fixed together by heat pressing, and the outer edges of the inner layer (1) and the outer layer (3) are sewn together to obtain a breathable and warm fabric.

7. The method according to claim 6, characterized in that: In step 2, the temperature of the hot pressing treatment is 105-115° C., the hot pressing pressure is 2-4 MPa, the number of hot pressing times is 2-4 times, and the hot pressing time for each time is 4-7 minutes.

8. The method according to claim 6, characterized in that: In step three, the temperature of the hot pressing treatment is 155-170° C., the hot pressing pressure is 5-8 MPa, the number of hot pressing times is 3-5 times, and the hot pressing time for each time is 3-6 minutes.

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