Preparation device of laminated structure composite film

Abstract

The utility model belongs to the field of preparation of composite films, and discloses a preparation device of a composite film with a layered structure. Comprising a rectangular base, a horizontal cylindrical mold and a heating control system, left-right strip-shaped guide rails are arranged on the top surfaces of the front side and the rear side of the base correspondingly. A rotating speed adjustable motor is fixedly arranged on the top surface of the right side of the base. Sliding blocks are arranged on the outer sides of the two guide rails respectively, limiting blocks are arranged at the upper ends of the sliding blocks, a mounting plate is fixed between the two limiting blocks, and a mounting base is arranged on the mounting plate; the mold is located over the base, end covers are detachably arranged at the two ends of the mold, air holes are formed in the two end covers, and horizontal supporting shafts are fixed to the centers of the two end covers respectively, rotationally connected with the mounting base and connected with an output shaft of the rotating speed adjustable motor respectively. According to the utility model, the laminated structure composite film with high orientation and compact stacking can be prepared.

Description

Technical Field

[0001] This invention belongs to the field of composite film preparation technology, specifically relating to a preparation device for a layered composite film. Background Technology

[0002] In recent years, biomimetic layered composite films derived from the layered structure of seashells have become an important research direction in multiple disciplines such as materials science, chemistry, and life sciences. Among them, lightweight, high-strength, and high-toughness layered composite films based on seashell biomimetic fabrication exhibit excellent mechanical properties with their multi-scale, multi-level "brick-and-mortar" stacked structure. Highly oriented and densely stacked low-dimensional functional fillers also enable biomimetic layered composite films to possess excellent electron / phonon transport characteristics. However, composite films prepared by traditional film-forming processes, such as vacuum-assisted filtration, evaporation-induced self-assembly, blade coating, and hot pressing, often suffer from low orientation and non-dense stacking. Therefore, there is an urgent need to develop a device for preparing highly oriented, densely stacked layered composite films. Utility Model Content

[0003] In view of the problems of low orientation and non-dense stacking in the preparation process of layered composite films in the prior art, the purpose of this utility model is to provide a preparation device for highly oriented and densely stacked layered composite films.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An apparatus for preparing a layered composite film includes a rectangular base, a horizontal cylindrical mold, and a heating control system.

[0006] A left-right strip guide rail is fixed on each of the top surfaces of the front and rear sides of the base, and an adjustable speed motor is fixed in the middle of the top surface of the right side of the base.

[0007] Each of the two guide rails has a slider slidably connected to its outer side. A limit block is fixedly connected to the upper end of the slider. A mounting plate is fixedly connected between the two limit blocks in a front-back direction. A mounting seat is fixedly connected to the middle position of the mounting plate.

[0008] The mold is located directly above the base between two guide rails. The mold has detachable end caps at both ends, and several ventilation holes are evenly distributed on the end caps. A horizontal support shaft is fixed at the center of each end cap, and the right horizontal support shaft is connected to the output shaft of the adjustable speed motor, while the left horizontal support shaft is rotatably connected to the mounting base.

[0009] The heating control system includes a heating device, a thermocouple, and a temperature controller. The heating device is located directly above, below, in front of, or behind the mold. The working end of the thermocouple probe is located near the heated surface of the outer wall of the mold. The thermocouple and the heating device are respectively connected to the temperature controller, which is placed in an unoccupied position on the outer periphery of the base.

[0010] Furthermore, a scraping mechanism is fixedly installed inside the mold. This scraping mechanism includes two scraper blades and an X-shaped clip. The two scraper blades are spaced apart vertically with their working surfaces facing the inner wall of the mold. The X-shaped clip is located between the two scraper blades, and its four apex positions are slidably connected to the ends of the two scraper blades furthest from their working surfaces. A horizontal fixing shaft is fixed to the middle of the X-shaped clip. The right end of the horizontal fixing shaft extends through the right end cover of the mold to the inside of the right horizontal support shaft and is detachably fixed thereto. The left end of the horizontal fixing shaft extends through the left end cover of the mold to the inside of the left horizontal support shaft and is detachably fixed thereto. The scraping gap (the distance between the scraper blade and the inner wall of the mold) of this scraping mechanism can be adjusted by sliding the X-shaped clip according to the required thickness of the layered composite film of the target product. Sliding the X-shaped clip outwards increases the scraping gap, while squeezing it inwards decreases the scraping gap.

[0011] Furthermore, the heating device is an electric heating tube, an infrared radiation lamp, a warm air blower, or an electric furnace. When the heating device is an infrared radiation lamp, a warm air blower, or an electric furnace, the heating device is fixed to the top, front side, or rear side of the mold by a fixing device. When the heating device is an electric heating tube, the heating device is fixed to the top or bottom of the mold by a fixing device.

[0012] Preferably, when the heating device is an electric heating tube, the corresponding fixing device is an arc plate. The arc of the arc plate is the same as that of the mold. Several electric heating tubes are fixedly mounted on the inner arc surface of the arc plate parallel to the central axis of the mold. An installation groove is opened on the base directly below the mold, and the arc plate is fixed in the installation groove.

[0013] Furthermore, the mounting groove is a through groove, and a strip plate is fixedly provided at the bottom center of the arc plate along its axis. U-shaped fasteners are fixed on the left and right sides of the strip plate at intervals. The opening of the fastener faces the bottom of the arc plate and its middle part is vertically fixed on the strip plate. The two ends of the fastener are bent outward and fixed to the bottom of the base on both sides of the through groove.

[0014] Furthermore, a first insert is rotatably connected to the top surface of the base on the front side of the through groove. The first insert has a first insertion hole, and the probe of the thermocouple is inserted into the first insertion hole with its working end close to the heated surface of the outer wall of the mold.

[0015] Preferably, a number of limiting holes are provided at intervals on the top surface of both guide rails, and bolt holes are provided on the left or right end of the limiting block. Limiting bolts are provided in the bolt holes, and the limiting bolts are threadedly connected to the limiting holes on the guide rails. This design makes it convenient to limit the position of the slider when it slides to the expected position.

[0016] Preferably, an inverted T-shaped limiting plate is fixed on the top surface of the base at least on the left side of the two guide rails; this design can prevent the slider from sliding out of the guide rail.

[0017] Preferably, the outer side of the cylindrical body of the mold is provided with a safety cover that is adapted to the size of the mold. The rear end of the safety cover is hinged to the outer side of the rear end of the base. The front end of the safety cover is respectively fixed with a handle and rotatably connected with a second insert plate. The second insert plate is provided with a second insertion hole. The outer side of the front end of the base is provided with a fixing hole, and the fixing hole and the second insertion hole are fixedly connected by bolts. This design can improve the safety of the device.

[0018] Furthermore, the safety shield is shaped like an arc or a polygon that is adapted to the size of the mold.

[0019] Furthermore, the safety cover is evenly equipped with several heat dissipation holes; this design facilitates the dissipation of mold temperature and increases the safety of the device.

[0020] Furthermore, the left and right ends of the mold are provided with two end covers that are adapted to the size of the two ends of the mold. The two end covers are adapted to the shape of the left and right end faces of the safety cover and are integrally formed with them. The bottom of the two end covers is reserved with space for the guide rail to extend.

[0021] Beneficial Effects: This invention features a simple structure, convenient operation, and high efficiency. The high-speed centrifugal motion of the mold allows the liquid or colloidal polymer / filler dispersion system to be uniformly spread throughout the inner wall of the mold. Due to the density differences among the components of the dispersion system, both the filler and polymer molecular chains are subjected to outward centrifugal force, thus promoting the orderly arrangement and dense packing of the filler and polymer molecular chains. Simultaneously, the scraper installed in this invention, through contact with the liquid surface of the dispersion system during operation, not only limits the thickness of the resulting film but also induces the polymer molecular chains to align orderly along the shear direction. Meanwhile, the filler, under the action of the shear flow, arranges itself in an orderly in-plane configuration, thereby promoting the dual orderly arrangement and dense packing of both polymer molecular chains and filler. Attached Figure Description

[0022] Figure 1 : A three-dimensional structural diagram of one embodiment of this utility model (without a safety cover and omitting the heating control system);

[0023] Figure 2: A schematic diagram of the main structure of one embodiment of this utility model;

[0024] Figure 3 : A top view of one embodiment of this utility model;

[0025] Figure 4 : A three-dimensional structural diagram of the coating mechanism (the rotation direction of the mold in this diagram is clockwise);

[0026] Figure 5 A three-dimensional structural diagram of the arc-shaped plate and the electric heating element in combination;

[0027] Figure 6 A bottom view of the structure where the curved plate is fixed to the base;

[0028] Figure 7 : A three-dimensional structural diagram of the second embodiment of this utility model (with a safety cover, omitting the heating control system);

[0029] The attached figures are labeled as follows: 1-base; 2-mold; 3-guide rail; 4-motor; 5-slider; 6-limiting block; 7-mounting plate; 8-mounting seat; 9-limiting plate; 10-limiting hole; 11-bolt hole; 12-end cover; 13-horizontal support shaft; 14-mounting groove; 15-safety cover; 16-end cover; 17-heat dissipation hole; 18-arc plate; 19-electric heating tube; 20-strip plate; 21-fixing component; 22-first insert; 23-first insertion hole; 24-scraper; 25-X-type buckle; 26-horizontal fixing shaft; 27-layered composite film; 28-polymer / filler dispersion system. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Example 1

[0032] like Figures 1-6As shown, a fabrication apparatus for a layered composite film includes a rectangular base 1, a horizontal cylindrical mold 2, and a heating control system. A left-right oriented strip guide rail 3 is fixedly mounted on each of the front and rear top surfaces of the base 1. An adjustable speed motor 4 is fixedly mounted at the center of the right top surface of the base 1. Several limiting holes 11 are spaced apart on the top surfaces of the two guide rails 3. A slider 5 is slidably connected to the outer side of each guide rail 3. A limiting block 6 is fixedly connected to the upper end of the slider 5. A bolt hole 10 is opened at the left end of the limiting block 6, and a limiting bolt (not shown) is installed in the bolt hole 10. The limiting bolt is threadedly connected to the limiting hole 11 on the guide rail 3. A mounting plate 7 is fixedly connected between the two limiting blocks 6 in a front-rear direction. The middle position of the mounting plate 7 is fixed... The mold 2 is connected to the mounting base 8; each of the two guide rails 3 has an inverted T-shaped limiting plate 9 fixed on the top surface of the base 1 at the left and right ends; the mold 2 is located directly above the base 1 between the two guide rails 3, and the mold 2 has detachable end caps 12 at both ends, with several ventilation holes (not shown) on the end caps 12. A horizontal support shaft 13 is fixed at the center of each end cap 12, with the right horizontal support shaft 13 connected to the output shaft of the adjustable speed motor 4, and the left horizontal support shaft 13 rotatably connected to the mounting base 8; a scraping mechanism is fixed inside the mold 2; the scraping mechanism includes two scraper blades 24 and an X-shaped buckle 25, with the two scraper blades 24 spaced vertically and their working surfaces facing the inner wall of the mold 2; the X-shaped buckle 25... 5 is located between the two scrapers 24, and the four apex positions of the X-shaped buckle 25 are slidably connected to the end faces of the two scrapers 24 that are away from their working surfaces; a horizontal fixing shaft 26 is fixed in the middle of the X-shaped buckle 25, the right end of the horizontal fixing shaft 26 extends through the right end cover 12 of the mold 2 to the inside of the right horizontal support shaft 13 and is detachably fixed to it, and the left end of the horizontal fixing shaft 26 extends through the left end cover 12 of the mold 2 to the inside of the left horizontal support shaft 13 and is detachably fixed to it; the heating control system includes a heating device, a thermocouple (not shown) and a temperature controller (not shown), the heating device is located directly below the mold 2, the working end of the thermocouple probe is located near the heated surface of the outer wall of the mold 2, and the thermocouple and heating The devices are connected to a temperature controller, which is placed in an empty position on the outer periphery of the base 1. The heating device consists of several electric heating tubes 19. An installation groove 14 is provided on the base 1 directly below the mold 2. The installation groove 14 is a through groove. An arc plate 18 is fixed in the through groove. The arc of the arc plate 18 is the same as that of the mold 2. Several electric heating tubes 19 are fixed to the inner arc surface of the arc plate 18 parallel to the central axis of the mold 2. A strip plate 20 is fixed along its axis at the bottom center of the arc plate 18. U-shaped fasteners 21 are fixed to the left and right sides of the strip plate 20 at intervals. The opening of the fastener 21 faces the bottom of the arc plate 18 and its middle part is vertically fixed to the strip plate 21. The two ends of the fastener 21 are bent outward and fixed to the bottom of the base 1 on both sides of the through groove.A first insert 22 is rotatably connected to the top surface of the base 1 on the front side of the through slot. The first insert 22 has a first insertion hole 23. The thermocouple probe is inserted into the first insertion hole 23, with its working end close to the heated surface of the outer wall of the mold 2.

[0033] Work process:

[0034] (1) Loosen the limiting bolts on the two limiting blocks 6 and pull them out of the limiting hole 11. Then, remove the connection between the left horizontal support shaft 13 and the mounting base 8, and slide the two sliders 5 to the left so that the left horizontal support shaft 13 is removed from the mounting base 8.

[0035] (2) Remove the left end cap 12 of mold 2 and attach a layer of polymer release film to the inner wall of mold 2;

[0036] (3) Weigh out the polymer and layered filler according to the required ratio of the target product layered composite film 27, add water to prepare a polymer / filler dispersion system 28 (polymer concentration is 1~10 wt%), and add the polymer / filler dispersion system 28 to the right side of the scraper 24 in the mold 2.

[0037] (4) Install the left end cover 12 of the upper mold 2, slide the two sliders 5 to the right, insert the limit bolts on the two limit blocks 6 into the limit holes 11 and tighten them, and at the same time rotate the left horizontal support shaft 13 to the mounting base 8.

[0038] (5) Start the adjustable speed motor 4, adjust the speed (1000~6000 rpm), and at the same time start the temperature controller and set the temperature (enough to evaporate the solvent). The heating device will start to heat the rotating mold 2.

[0039] (6) Under the combined action of the high-speed centrifugal force of the mold 2 and the shearing force of the scraper 24, the polymer / filler dispersion system 28 forms a film on the inner wall of the mold 2. While forming the film, the polymer / filler dispersion system 28 gradually evaporates the solvent due to heat. After the mold 2 rotates for 1 to 6 hours and the solvent has completely evaporated (no more gas is released from the vent on the end cap 12), the temperature controller and the adjustable speed motor 4 are turned off.

[0040] (7) After the temperature of the outer wall of the mold 2 drops to room temperature, repeat the operation of step (1), remove the left end cap 12 of the mold 2, take out the polymer release film (at this time, the layered composite film 27 is attached to it), and peel the layered composite film 27 off the polymer release film.

[0041] Note: When it is necessary to adjust the thickness of the target product layered composite film 27, in step (2), after removing the left end cap 12 of the mold 2 and before attaching a polymer release film to the inner wall of the mold 2, the connection between the left and right ends of the horizontal fixing shaft 26 of the adjustment X-type buckle 25 and the left and right horizontal support shafts 13 can be removed first. Then, loosen or tighten the sliding X-type buckle 25 outward or inward so that the four apex corners of the X-type buckle 25 can slide on the end face of the two scrapers 24 away from their working surface, thereby adjusting the gap between the working surface of the scraper 24 and the inner wall of the mold 2 (i.e., the scraping gap) until the scraping gap reaches the thickness of the target product layered composite film 27. Finally, fix the left and right ends of the horizontal fixing shaft 26 of the X-type buckle 25 to the left and right horizontal support shafts 13 respectively.

[0042] Example 2

[0043] The difference from Example 1 is as follows: Figure 7 As shown, the outer side of the cylinder of mold 2 is provided with a polygonal safety cover 15 that is adapted to the size of mold 2. The left and right ends of mold 2 are provided with two end covers 16 that are adapted to the size of the two ends of mold 2. The two end covers 16 are adapted to the shape of the left and right end faces of the safety cover 15 and are integrally formed with it. The bottom of the two end covers 16 is reserved with space for the guide rail 3 to extend. Several heat dissipation holes 17 are evenly provided on the safety cover 15. The rear end of the safety cover 15 is hinged to the outer side of the rear end of the base 1. The front end of the safety cover 15 is respectively fixed with a handle (not shown) and rotatably connected with a second insert (not shown). The second insert is provided with a second insertion hole (not shown). The outer side of the front end of the base 1 is provided with a fixing hole (not shown). The fixing hole and the second insertion hole are fixedly connected by bolts.

[0044] Everything else is the same as in Example 1.

[0045] Note: When it is necessary to close the safety cover 15, the operator holds the handle and pushes the safety cover 15 forward to close it. Then, rotate the second insert to align the second socket with the fixing hole and insert the bolt. When it is necessary to open the safety cover 15, remove the bolt and pull it out of the fixing hole and the second socket. Rotate the second insert away from the fixing hole. The operator holds the handle and rotates the safety cover 15 backward until it is fully open.

Claims

1. An apparatus for preparing a layered composite thin film, characterized in that: Includes a rectangular base, a horizontal cylindrical mold, and a heating control system; A left-right strip guide rail is fixed on each of the top surfaces of the front and rear sides of the base, and an adjustable speed motor is fixed in the middle of the top surface of the right side of the base. Each of the two guide rails has a slider slidably connected to its outer side. A limit block is fixedly connected to the upper end of the slider. A mounting plate is fixedly connected between the two limit blocks in a front-back direction. A mounting seat is fixedly connected to the middle position of the mounting plate. The mold is located directly above the base between two guide rails. The mold has detachable end caps at both ends, and several ventilation holes are evenly distributed on the end caps. A horizontal support shaft is fixed at the center of each end cap, and the right horizontal support shaft is connected to the output shaft of the adjustable speed motor, while the left horizontal support shaft is rotatably connected to the mounting base. The heating control system includes a heating device, a thermocouple, and a temperature controller. The heating device is located directly above, below, in front of, or behind the mold. The working end of the thermocouple probe is located near the heated surface of the outer wall of the mold. The thermocouple and the heating device are respectively connected to the temperature controller, which is placed in an unoccupied position on the outer periphery of the base.

2. The apparatus for preparing layered composite thin films as described in claim 1, characterized in that: A scraping mechanism is fixedly installed inside the mold. The scraping mechanism includes two scraper blades and an X-shaped buckle. The two scraper blades are arranged vertically at intervals with their working surfaces facing the inner wall of the mold. The X-shaped buckle is located between the two scraper blades, and the four apex positions of the X-shaped buckle are slidably connected to the end faces of the two scraper blades that are away from their working surfaces. A horizontal fixing shaft is fixed in the middle of the X-shaped buckle. The right end of the horizontal fixing shaft passes through the right end cover of the mold and extends into the interior of the right horizontal support shaft, where it is detachably fixed. The left end of the horizontal fixing shaft passes through the left end cover of the mold and extends into the interior of the left horizontal support shaft, where it is detachably fixed.

3. The apparatus for preparing layered composite thin films as described in claim 1, characterized in that: The heating device is an electric heating tube, an infrared radiation lamp, a warm air blower, or an electric furnace. When the heating device is an infrared radiation lamp, a warm air blower, or an electric furnace, the heating device is fixed to the top, front, or rear of the mold by a fixing device. When the heating device is an electric heating tube, the heating device is fixed to the top or bottom of the mold by a fixing device.

4. The apparatus for preparing layered composite thin films as described in claim 3, characterized in that: When the heating device is an electric heating tube, the corresponding fixing device is an arc plate. The arc of the arc plate is the same as that of the mold. Several electric heating tubes are fixed on the inner arc surface of the arc plate parallel to the central axis of the mold. An installation groove is opened on the base directly below the mold, and the arc plate is fixed in the installation groove.

5. The apparatus for preparing layered composite thin films as described in claim 4, characterized in that: The mounting groove is a through groove. A strip plate is fixedly installed at the bottom center of the arc plate along its axis. U-shaped fasteners are fixed on the left and right sides of the strip plate at intervals. The opening of the fastener faces the bottom of the arc plate and its middle part is vertically fixed to the strip plate. The two ends of the fastener are bent outward and fixed to the bottom of the base on both sides of the through groove.

6. The apparatus for preparing layered composite thin films as described in claim 5, characterized in that: A first insert is rotatably connected to the top surface of the base on the front side of the through slot. The first insert has a first insertion hole. The probe of the thermocouple is inserted into the first insertion hole and its working end is close to the heated surface of the outer wall of the mold.

7. The apparatus for preparing layered composite thin films as described in claim 1, characterized in that: Several limiting holes are spaced apart on the top surface of both guide rails. Bolt holes are opened at the left or right end of the limiting block, and limiting bolts are installed in the bolt holes. The limiting bolts are threadedly connected to the limiting holes on the guide rails.

8. The apparatus for preparing layered composite thin films as described in claim 1, characterized in that: An inverted T-shaped limiting plate is fixed to the top surface of the base at least at the left end of each of the two guide rails.

9. The apparatus for preparing layered composite thin films as described in claim 1, characterized in that: The outer side of the cylindrical body of the mold is equipped with a safety cover that is adapted to the size of the mold. The rear end of the safety cover is hinged to the outer side of the rear end of the base. The front end of the safety cover is fixedly equipped with a handle and rotatably connected with a second insert. The second insert has a second insertion hole. The outer side of the front end of the base is provided with a fixing hole, and the fixing hole and the second insertion hole are fixedly connected by bolts.

10. The apparatus for preparing layered composite thin films as described in claim 9, characterized in that: The safety cover is in the shape of an arc or polygon that is adapted to the size of the mold.

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