A nanoparticle-containing composite film, a preparation device, a method, and a thin film preparation method

Abstract

The present application relates to a kind of nanometer particle-containing composite film, preparation device, method and film preparation method, wherein nanometer particle-containing composite film includes: a plurality of film layers (a) and the fiber bundle layer (b) between adjacent film layer (a) is arranged;The film layer is nanometer particle-containing epoxy resin film, or, fiber bundle in the fiber bundle layer (b) is additionally provided with nanometer particle;The nanometer particle is magnetized nanometer particle.The present application can be magnetized to nanometer particle, so that nanometer particle presents regular arrangement, and then, the mechanical properties of nanometer particle-containing composite film can be effectively enhanced.

Description

Technical Field

[0001] This invention relates to the field of composite material technology, and in particular to a nanoparticle-containing composite film, preparation apparatus, method, and film preparation method. Background Technology

[0002] Fiber-reinforced composites have advantages such as high specific strength and specific stiffness, and are widely used in aerospace, automotive manufacturing, construction and other fields. However, in the preparation process of composite materials, since the diameter of common fibers is mostly a few micrometers to tens of micrometers, it is difficult to control their spatial position. The random distribution of fibers leads to strong dispersion of material properties in the prepared composite materials, which reduces their macroscopic mechanical properties.

[0003] Chinese patent application CN111070720B discloses a fiber position control device and method for fiber-reinforced composite materials. In this device, the tip of bent tweezers is wrapped with adhesive tape to grip a single fiber filament. Controlled by a three-axis micro-motion platform, it can semi-automatically align the fiber filament and allow it to pass through the micropores in a micro-mold, achieving a regular fiber distribution. Chinese patent application CN114474784A discloses a method and device for preparing micron-level regularly arranged fiber bundles. This method places a single fiber filament with a mass block attached onto a single fiber fixing device. A horizontal moving platform is used to move the single-layer fiber fixing device to a suitable position, and then a vertical moving platform is used to move the single fiber fixing device downwards, fixing the fiber filament on the single-layer fiber fixing device. While these existing solutions can achieve control over the spatial position of the fibers, they are not suitable for the mass production of composite materials with uniform fiber distribution. Furthermore, the prepared composite materials do not contain nanomaterials, resulting in poor mechanical properties and difficulty in meeting relevant application requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a nanoparticle-containing composite membrane, a preparation apparatus, a method, and a thin film preparation method.

[0005] To achieve the above-mentioned objectives, the present invention provides a nanoparticle-containing composite membrane, comprising: a plurality of thin film layers and a fiber bundle layer disposed between adjacent thin film layers; The thin film layer is an epoxy resin film containing nanoparticles, or the fiber bundles in the fiber bundle layer are attached with nanoparticles. The nanoparticles are magnetizable nanoparticles.

[0006] According to one aspect of the present invention, if the thin film layer is an epoxy resin thin film containing nanoparticles, it is obtained by the following steps, including: In the direction away from the carrier, a vacuum silica gel layer, a water-soluble polymer film layer, and a silane coupling agent layer are arranged sequentially. An epoxy resin colloid containing nanoparticles is disposed on the silane coupling agent layer, wherein the nanoparticles are magnetized. A magnetic field is applied to align the magnetized nanoparticles. The epoxy resin colloid is cured, and the water-soluble polymer film layer is dissolved to obtain the thin film layer.

[0007] According to one aspect of the present invention, in the step of providing a nanoparticle-containing epoxy resin colloid on the silane coupling agent layer, the nanoparticle-containing epoxy resin colloid is obtained by the following steps, comprising: Take a preset amount of epoxy resin solution and curing agent, add silane coupling agent, and stir at room temperature for a preset time to obtain a first mixture; Nanoparticles were added to the first mixture and dispersed in an ultrasonic field to obtain a second mixture; The nanoparticles in the second mixture are magnetized by surface modification with magnetic nanoparticles or by carbonization of magnetic precursors, and the air bubbles in the second mixture are removed by a vacuum pump while being stirred with magnetic force to obtain epoxy resin colloid containing nanoparticles.

[0008] According to one aspect of the present invention, if the fiber bundles in the fiber bundle layer are attached with magnetized nanoparticles, then the thin film layer is an epoxy resin thin film; The fiber bundles with attached magnetized nanoparticles are obtained by the following steps: Electrostatics are applied to the fiber bundle, and magnetized nanoparticles adhere to the fiber bundle based on the applied electrostatics.

[0009] To achieve the above-mentioned objectives, the present invention provides an apparatus for preparing the aforementioned nanoparticle-containing composite film, comprising: a winding module, a motor connected to the winding module, a feed module for supporting the motor, and a guide module for conveying fiber bundles; The winding module includes: a winding roller and an attachment plate; The winding roller includes: a fixed roller and an adhesive roller sleeved on the outside of the fixed roller; A temperature control module and a temperature sensor module are arranged on the outer surface of the fixed roller. Along the axial direction of the fixed roller, multiple temperature control modules are arranged at equal intervals; The temperature sensor module is disposed between adjacent temperature control modules; Along the radial direction of the winding roller, the temperature control module and the temperature sensor module are spaced apart from the adhesive roller; The feed module is linearly driven, and its driving direction is consistent with the axial direction of the winding roller.

[0010] According to one aspect of the invention, the guide module includes: a tensioning assembly and a transparent scale; The tensioning component and the winding roller are spaced apart, and the transparent scale is disposed between the tensioning component and the winding roller; The tensioning assembly includes: a first tensioning roller and a second tensioning roller; The first tension roller and the second tension roller are spaced apart; The transparent scale includes: a transparent substrate, and tension reference marks, tension scale marks, and position scale marks disposed on the transparent substrate; The tension reference mark is symmetrically arranged on both sides of the tension scale mark; The position scale marks are arranged at equal intervals in multiple places. The tension reference mark and tension scale mark are arranged along the fiber bundle transport direction; The plurality of the aforementioned position scale marks are arranged along the direction of transport of the fiber bundle perpendicular to the fiber bundle.

[0011] To achieve the above-mentioned objective, the present invention provides a method for preparing a nanoparticle-containing composite membrane using the aforementioned preparation apparatus, wherein the nanoparticle-containing composite membrane comprises: a plurality of thin film layers and a fiber bundle layer disposed between adjacent thin film layers; The thin film layer is an epoxy resin film containing nanoparticles, or the fiber bundles in the fiber bundle layer are attached with nanoparticles. The nanoparticles are magnetized nanoparticles; The preparation method includes the following steps: S1. Attach a film layer to the adhesive roller of the winding roller; S2. Pass the fiber bundle through the tensioning assembly of the guide module and adhere it to the film layer of the adhesive roller; S3. The tension and position of the fiber bundle are calibrated based on the tensioning component and the transparent scale; S4. The feed module drives the winding roller to move along its axial direction at a preset speed, while the motor drives the winding roller to rotate at a preset speed. S5. After the fiber bundle is wound on the film layer, the feeding module and the motor are stopped, and the fiber bundle is cut along the docking position of the film layer on the adhesive roller to form a fiber bundle layer on the film layer; S6. Take another film layer and attach it to the previous film layer to cover the fiber bundle layer between the two film layers; S7. Repeat steps S2 to S6 until the thickness of the fiber bundle layer reaches the preset requirement; S8. The temperature of the adhesive roller is controlled by the temperature control module in the winding roller so that the prepared nanoparticle-containing composite film is debonded from the surface.

[0012] According to one aspect of the present invention, step S1, the step of attaching a film layer to the adhesive roller of the winding roller, includes: S11. Adhere the end of the film layer to the surface of the adhesive roller; S12. Adjust the position of the attachment plate relative to the adhesive roller so that the attachment plate presses against the film layer; S13. Rotate the adhesive roller, and the film layer is adhered to the surface of the adhesive roller by the pressing action of the adhesive plate.

[0013] To achieve the above-mentioned objective, this invention provides a method for preparing an epoxy resin film containing nanoparticles, comprising: In the direction away from the carrier, a vacuum silica gel layer, a water-soluble polymer film layer, and a silane coupling agent layer are arranged sequentially. An epoxy resin colloid containing nanoparticles is disposed on the silane coupling agent layer, wherein the nanoparticles are magnetized. A magnetic field is applied to align the magnetized nanoparticles. The nanoparticle-containing epoxy resin colloid is cured, and the water-soluble polymer film layer is dissolved to obtain the nanoparticle-containing epoxy resin film.

[0014] According to one aspect of the present invention, the nanoparticle-containing epoxy resin colloid is obtained by the following steps, comprising: Take a preset amount of epoxy resin solution and curing agent, add silane coupling agent, and stir at room temperature for a preset time to obtain a first mixture; wherein, the preset time is 15~20 minutes; Nanoparticles were added to the first mixture and dispersed in an ultrasonic field to obtain a second mixture; The nanoparticles in the second mixture are magnetized by surface modification with magnetic nanoparticles or by carbonization of magnetic precursors, and the air bubbles in the second mixture are removed by a vacuum pump while being stirred with magnetic force to obtain the epoxy resin colloid containing nanoparticles.

[0015] According to one aspect of the present invention, the present invention can magnetize nanoparticles to make the nanoparticles arrange in a regular manner, thereby effectively enhancing the mechanical properties and conductivity of nanoparticle-containing composite films.

[0016] According to one aspect of the present invention, nanoparticles can be introduced into a nanoparticle-containing composite film by attaching nanoparticles to the fiber bundles of the fiber bundle layer. This allows the thin film layer to be made of ordinary materials, effectively reducing the production difficulty and cost of the thin film layer and making the preparation of the present invention more flexible.

[0017] According to one aspect of the present invention, the position of the fiber bundles can be precisely controlled to obtain a fiber bundle layer with precise spacing between the fiber bundles.

[0018] According to one aspect of the present invention, the present invention can accurately control the winding speed of the limiting bundle and the traveling speed of the feeding module, thereby enabling flexible control of the fiber bundle layer laying efficiency and improving the fiber bundle layer laying speed.

[0019] According to one aspect of the present invention, the present invention can achieve accurate control of the fiber bundle conveying speed, and can also flexibly arrange the number of wire bundles (such as using a single bundle or multiple bundles), realizing the preparation of different types of fiber bundle layers; in addition, the fiber bundle position can be accurately calibrated by the set transparent scale, so as to effectively improve the laying accuracy of the fiber bundle layer.

[0020] According to one aspect of the present invention, the present invention can basically measure the tension of the fiber bundle during laying by setting a transparent scale, and can basically ensure the stability of the path of the fiber monofilament during the laying process.

[0021] According to one aspect of the present invention, the temperature of the winding module can be flexibly controlled during the preparation of nanoparticle-containing composite films, and the temperature of the composite material during the operation process can be precisely controlled in real time, which helps to ensure the quality of nanoparticle-containing composite films and is beneficial to the laying and fiber adhesion of nanoparticle-containing composite films. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the structure of a nanoparticle-containing composite film according to one embodiment of the present invention; Figure 2 This is a schematic diagram showing the regular distribution of magnetized nanoparticles in a nanoparticle-containing epoxy resin film according to one embodiment of the present invention. Figure 3 This is a schematic diagram showing the distribution of unmagnetized nanoparticles in a nanoparticle-containing epoxy resin film according to one embodiment of the present invention. Figure 4 This is a schematic diagram illustrating the structure of an apparatus for preparing a nanoparticle-containing composite film according to one embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the structure of a winding module according to an embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the structure of a guide module according to one embodiment of the present invention; Figure 7 This is an illustrative representation of a method for preparing a nanoparticle-containing composite film according to one embodiment of the present invention; Figure 8 This is a schematic diagram showing a fine-grained fiber bundle layup in a multilayer fiber bundle layer of a nanoparticle-containing composite membrane according to an embodiment of the present invention. Figure 9 This is a schematic, detailed view of the fiber bundle layup of a multilayer fiber bundle layer of a conventional composite membrane according to an embodiment of the present invention. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0024] In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" express orientations or positional relationships based on the orientations or positional relationships shown in the relevant drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present invention.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the embodiments of the present invention are not limited to the following embodiments.

[0026] like Figure 1 As shown, according to one embodiment of the present invention, the present invention provides a nanoparticle-containing composite membrane, comprising: a plurality of thin film layers a and a fiber bundle layer b disposed between adjacent thin film layers a; in this embodiment, the thin film layers are nanoparticle-containing epoxy resin films, or the fiber bundles in the fiber bundle layer b are attached with nanoparticles; wherein, the nanoparticles are magnetizable nanoparticles, and further, the nanoparticles may also be provided with conductive or other functions, such as carbon nanotubes.

[0027] In this embodiment, if the thin film layer is an epoxy resin film containing nanoparticles, the nanoparticles are embedded in the epoxy resin in a regular arrangement and then cured to form the film.

[0028] In this embodiment, if nanoparticles are attached to the fiber bundles in the fiber bundle layer b, the nanoparticles are regularly adhered to the fiber bundles. The nanoparticles are adhered to the fiber bundles by applying electrostatic force to the fiber bundles.

[0029] like Figure 1 As shown, according to one embodiment of the present invention, if the thin film layer is an epoxy resin thin film containing magnetized nanoparticles, it is obtained by the following steps, including: In the direction away from the carrier, a vacuum silicone layer, a water-soluble polymer film layer, and a silane coupling agent layer are arranged sequentially. In this embodiment, a regular glass slide can be used as the carrier for preparing the epoxy resin film, wherein the external dimensions of the glass slide are consistent with the external dimensions of the epoxy resin film to be prepared. In this embodiment, the vacuum silicone layer is coated onto the surface of the glass slide using a vacuum silicone coating method. Then, a water-soluble polymer film layer is attached to the vacuum silicone layer by a bonding method. The water-soluble polymer film layer can be obtained by pre-preparation. Furthermore, a silane coupling agent layer is coated on the formed water-soluble polymer film layer, thereby completing the overall structural arrangement of the carrier.

[0030] An epoxy resin colloid containing nanoparticles is disposed on a silane coupling agent layer, wherein the nanoparticles are magnetized.

[0031] Apply a magnetic field to align the magnetized nanoparticles; see also Figure 2 and Figure 3 As shown, in this embodiment, the carrier is fixed as a whole on a thin film spin coater, and a magnetic sheet is added to the other side of the carrier fixed on the thin film spin coater so that the magnetized nanomaterials are aligned. The obtained epoxy resin colloid is coated on the silane coupling agent layer so that the epoxy resin colloid can adhere to the water-soluble polymer film layer. Then, by adjusting the rotation speed of the thin film spin coater, an uncured epoxy resin film containing nanoparticles of a preset thickness can be obtained.

[0032] The nanoparticle-containing epoxy resin colloid is cured, and a water-soluble polymer film layer is dissolved to obtain a thin film layer. In this embodiment, the carrier is removed from the thin film spin coater and placed in an oven at a preset temperature for a certain period of time to cure the formed nanoparticle-containing epoxy resin film. The film is then cooled to room temperature in the oven. Further, the cooled carrier is placed in a glass container filled with room temperature water and left to stand for a preset time to dissolve the water-soluble polymer film layer. This allows the cured nanoparticle-containing epoxy resin film to separate from the carrier. The separated nanoparticle-containing epoxy resin film is then removed and left to stand without drying to obtain the finished nanoparticle-containing epoxy resin film.

[0033] According to one embodiment of the present invention, in the step of setting the nanoparticle-containing epoxy resin colloid on the silane coupling agent layer, the nanoparticle-containing epoxy resin colloid is obtained by the following steps, which include: Take a preset amount of epoxy resin solution and curing agent, add silane coupling agent, and stir at room temperature for a preset time to obtain a first mixture; in this embodiment, the preset time is 15 to 20 minutes.

[0034] Nanoparticles were added to the first mixture and dispersed in an ultrasonic field to obtain a second mixture.

[0035] The nanoparticles in the second mixture are magnetized by surface modification with magnetic nanoparticles or by carbonization of magnetic precursors. The air bubbles in the second mixture are then removed by a vacuum pump while the mixture is being stirred with magnetic force to obtain an epoxy resin colloid containing nanoparticles.

[0036] According to one embodiment of the present invention, if the fiber bundles in the fiber bundle layer b are supplemented with magnetized nanoparticles, then the thin film layer a is an epoxy resin film; wherein the epoxy resin film is made of a single material. In this embodiment, the fiber bundles supplemented with magnetized nanoparticles are obtained by the following steps, which include: Electrostatics are applied to the fiber bundle, and magnetized nanoparticles adhere to the fiber bundle based on the applied electrostatics. In this embodiment, an electrostatic generating device is used to electrostatically treat the fiber bundle, and then the fiber bundle is passed through a nanoparticle holding device so that nanoparticles with the same alignment direction are attached to the surface of the fiber bundle after passing through the nanoparticle holding device. In this embodiment, the magnetized nanoparticles are magnetized after being attached to the fiber bundle and before the fiber bundle is adhered to the thin film layer a.

[0037] Combination Figure 4 , Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, the present invention provides an apparatus for preparing the aforementioned nanoparticle-containing composite film, comprising: a winding module 1, a motor 2 connected to the winding module 1, a feeding module 3 for supporting the motor 2, and a guiding module 4 for conveying fiber bundles; in this embodiment, the winding module 1 comprises: a winding roller 11 and an adhesive plate 12; wherein, the winding roller 11 comprises: a fixed roller 111 and an adhesive roller 112 sleeved on the outside of the fixed roller 111; in this embodiment, the adhesive roller 112 is a hollow cylinder with openings at both ends, which is sleeved on the outside of the fixed roller 111 and fixed to the two ends of the fixed roller 111 by means of opposite ends, so as to achieve coaxial connection between the adhesive roller 112 and the fixed roller 111.

[0038] In this embodiment, the outer surfaces of the attachment plate 12 and the adhesive roller 112 are spaced apart. Specifically, the position of the attachment plate 12 relative to the adhesive roller 112 is adjustable along the radial direction of the adhesive roller 112. This allows the side of the film layer a to be adhered to the adhesive roller 112. By adjusting the position of the attachment plate 12 relative to the adhesive roller 112, the film layer a can be precisely adhered to the outer surface of the adhesive roller 112 by rotating the adhesive roller 112. In this embodiment, the attachment plate 12 can be configured as a flat plate or a curved plate to ensure that the film layer a is fully adhered through line contact or surface contact. In this embodiment, the size of the film layer a can be matched with the outer surface size of the adhesive roller 112, so that while the film layer a covers the adhesive roller 112, the two ends of the film layer a are aligned, ensuring that the length of the adhered fiber bundle perfectly matches the length of the film layer a, thus avoiding waste of fiber bundle material.

[0039] In this embodiment, a temperature control module 111a and a temperature sensor module 111b are arranged on the outer surface of the fixed roller 111. Multiple temperature control modules 111a are arranged at equal intervals along the axial direction of the fixed roller 111. Temperature sensor modules 111b are arranged between adjacent temperature control modules 111a. In this embodiment, the temperature control module 111a has multiple temperature control sub-modules 111a1. Along the circumference of the fixed roller 111, multiple temperature control sub-modules 111a1 in each temperature control module 111a are arranged sequentially adjacent to each other to achieve circumferential encirclement of the fixed roller 111.

[0040] In this embodiment, the temperature sensor module 111b is provided with a plurality of temperature sensors 111b1, wherein, along the circumference of the fixed roller 111, the plurality of temperature sensors 111b1 in each temperature sensor module 111b are arranged adjacent to each other in sequence to achieve circumferential encirclement of the fixed roller 111.

[0041] In this embodiment, the number of temperature control sub-modules 111a1 in each temperature control module 111a is the same as the number of temperature sensors 111b1 in each temperature sensor module 111b. Therefore, the temperature control sub-modules 111a1 and temperature sensors 111b1 of adjacent temperature control modules 111a and temperature sensor modules 111b can be arranged adjacently in a one-to-one correspondence to achieve accurate temperature control and monitoring.

[0042] In this embodiment, the temperature control module 111a, the temperature sensor module 111b, and the adhesive roller 112 are spaced apart along the radial direction of the winding roller 11. Furthermore, by spaced apart between the adhesive roller 112 and the fixed roller 111, the temperature control module 111a and the temperature sensor module 111b are also spaced apart from the adhesive roller 112. This arrangement prevents the temperature control module 111a from contacting the adhesive roller 112, allowing for more uniform temperature distribution in the hollow area through heat transfer. This effectively ensures uniform heating of the adhesive roller 112, enabling accurate control of the film layer during adhesion and delamination. Moreover, this arrangement effectively avoids uneven heating caused by malfunctions of some temperature control submodules 111a1 or temperature sensors 111b1, effectively preventing negative impacts on the film layer (preventing film deformation (excessive temperature) and difficulty in film adhesion (excessive temperature)).

[0043] In this embodiment, the feed module 3 is linearly driven, and its driving direction is consistent with the axial direction of the winding roller 11. In this embodiment, the feed module 3 can be implemented using an electric cylinder. Of course, the feed module 3 can also be constructed by using a combination of guide rails and lead screws, as long as it can provide stable support for the winding module 1 and the motor 2.

[0044] Combination Figure 4 , Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, the guide module 4 includes: a tensioning component 41 and a transparent scale 42; in this embodiment, the tensioning component 41 and the winding roller 11 are spaced apart, and the transparent scale 42 is disposed between the tensioning component 41 and the winding roller 11; wherein, the first tensioning roller 411 and the second tensioning roller 412 are spaced apart; in this embodiment, the first tensioning roller 411 and the second tensioning roller 412 can be arranged vertically at intervals, for example, the first tensioning roller 411 is directly above or diagonally above the second tensioning roller 412.

[0045] In this embodiment, the axial direction of the first tension roller 411 is aligned with the axial direction of the winding roller 11, allowing the fiber bundle to be conveyed onto the winding roller 11 after passing through the second tension roller 412 and the first tension roller 411. In this embodiment, the transparent scale 42 is positioned between the first tension roller 411 and the winding roller 11, and its position is lower than the position of the fiber bundle connecting the first tension roller 411 and the winding roller 11. Therefore, the relative positional relationship between the fiber bundle and the corresponding graduations on the transparent scale 42 can be obtained through projection. Of course, in different embodiments, the position of the transparent scale 42 can be moved up and down or fixed, as long as it does not affect the conveying of the fiber bundle. In this embodiment, to ensure accurate correspondence between the projected position of the fiber bundle and the corresponding graduations on the transparent scale 42, the conveyed fiber bundle is kept parallel to the transparent scale 42.

[0046] In this embodiment, the transparent scale 42 includes: a transparent substrate 421, and tension reference marks 422, tension scale marks 423, and position scale marks 424 disposed on the transparent substrate 421; wherein, the tension reference marks 422 are symmetrically disposed on opposite sides of the tension scale marks 423. In this embodiment, the tension reference marks 422 and the tension scale marks 423 are arranged along the fiber bundle transport direction. In this embodiment, the tension reference marks 422 can be configured as straight grooves or straight protrusions, and are disposed in the middle of the transparent substrate 421; while multiple tension scale marks 423 are evenly spaced on each side of the tension reference marks 422, wherein the tension scale marks 423 can also be configured as straight grooves or straight protrusions, and each tension scale mark 423 is disposed parallel to the tension reference mark 422. In this embodiment, the tension scale marks 423 are at the micrometer level.

[0047] In this embodiment, multiple position scale marks 424 are equally spaced, and the multiple position scale marks 424 are arranged along the conveying direction perpendicular to the fiber bundle; wherein, the position scale marks 424 can also be set as straight grooves or straight protrusions; in this embodiment, the position scale marks 424 are at the micrometer level.

[0048] Combination Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, according to one embodiment of the present invention, the present invention provides a method for preparing a nanoparticle-containing composite film using the aforementioned preparation apparatus, wherein the nanoparticle-containing composite film comprises: a plurality of thin film layers a and a fiber bundle layer b disposed between adjacent thin film layers a. In this embodiment, the thin film layers are nanoparticle-containing epoxy resin films, or the fiber bundles in the fiber bundle layer b are attached with nanoparticles; wherein the nanoparticles are magnetized nanoparticles. In this embodiment, the preparation method includes the following steps: S1. A film layer a is attached to the adhesive roller 112 of the winding roller 11. In this embodiment, the film layer a can be an epoxy resin film containing nanoparticles or an epoxy resin film without nanoparticles. Based on the adhesiveness of the film layer a itself, it can be bonded to the adhesive roller 112. Of course, while bonding the film layer a to the adhesive roller 112, the surface temperature of the adhesive roller 112 can be matched with the adhesive characteristics of the film layer a by controlling the temperature control module 111a, thereby ensuring that the adhesion of the film layer a is stable and reliable.

[0049] S2. The fiber bundle is passed through the tensioning assembly 41 of the guide module 4 and adhered to the film layer a of the adhesive roller 112. In this embodiment, the fiber bundle passes sequentially through the second tensioning roller 412 and the first tensioning roller 411 to further adhere its ends to the film layer a. Along the axial direction of the adhesive roller 112, the fiber bundle is adhered adjacent to or flush with one side of the film layer a. Further, the tangent point between the fiber bundle and the first tensioning roller 411 is defined as A, the tangent point between the fiber bundle and the adhesive roller 112 is defined as B, and the midpoint between points A and B is defined as C. Thus, the position of the transparent scale 42 is adjusted so that the tension reference mark 422 on the transparent scale 42 coincides with point C, and a mark is made at point C of the fiber bundle. At the same time, the angle of the transparent scale 42 needs to be adjusted so that the transparent scale 42 is parallel to the fiber bundle and the fiber bundle is aligned with a position scale mark 424 on the transparent scale 42.

[0050] S3. The tension and position of the fiber bundle are calibrated based on the tensioning assembly 41 and the transparent scale 42. In this embodiment, the initial position of the fiber bundle is calibrated based on the corresponding position scale marks 424 on the transparent scale 42. Further, the first tensioning roller 411 and the second tensioning roller 412 are moved to observe the position of the marked point (i.e., point C) on the fiber bundle relative to the tension scale mark 423 to calibrate the tension of the limiting bundle, thereby determining whether the tension of the fiber bundle meets the requirements. In this embodiment, the alignment accuracy of the fiber bundle with the tension scale mark 423 is observed using a microscope.

[0051] S4. The feed module 3 drives the winding roller 11 to move axially at a preset speed, while the motor 2 drives the winding roller 11 to rotate at a preset speed. In this embodiment, during the axial movement of the winding roller 11, the fiber bundle is wound in a manner that maintains alignment with the position scale mark 424 on the transparent scale 42, thereby keeping the spacing of the fiber bundles on the adhesive roller 112 constant. In this embodiment, the alignment accuracy between the fiber bundle and the position scale mark 424 during the winding process is observed using a microscope.

[0052] S5. After the fiber bundle is wound on the film layer a, the feeding module 3 and motor 2 are stopped, and the fiber bundle is cut along the docking position of the film layer a on the bonding roller 112 to form a fiber bundle layer b on the film layer a. In this embodiment, after the fiber bundle is wound from one end of the winding roller 11 to the other end of the winding roller 11, the fiber bundle is evenly distributed on the film layer a. Then, the feeding module 3 and motor 2 stop moving simultaneously to complete the winding of the fiber bundle. In this embodiment, the fiber bundle is cut along the docking position of the film layer a on the bonding roller 112, thereby dividing the entire fiber bundle into fiber bundle segments arranged at equal intervals on the bonding roller 112.

[0053] S6. Take another film layer a and attach it to the previous film layer a so that the fiber bundle layer b is wrapped between the two film layers a; S7. Repeat steps S2 to S6 until the thickness of fiber bundle layer b reaches the preset requirement, see [link to relevant documentation]. Figure 8 and Figure 9 ; S8. The temperature of the adhesive roller 112 is controlled by the temperature control module 111a in the winding roller 11 so that the prepared nanoparticle-containing composite film is debonded from the surface.

[0054] Combination Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, according to one embodiment of the present invention, step S1, which involves attaching a film layer a to the adhesive roller 112 of the winding roller 11, includes: S11. Adhere the end of the film layer a to the surface of the adhesive roller 112; S12. Adjust the position of the attachment plate 12 relative to the adhesive roller 112 so that the attachment plate 12 presses against the film layer a; S13. Rotate the adhesive roller 112, and the film layer a is adhered to the surface of the adhesive roller 112 by the pressing action of the adhesive plate 12.

[0055] According to one embodiment of the present invention, in step S2, in the step of passing the fiber bundle through the tensioning component 41 of the guide module 4 and adhering it to the film layer a of the adhesive roller 112, if the fiber bundle in the fiber bundle layer b has nanoparticles attached, the fiber bundle can be pre-attached with nanoparticles or the nanoparticles can be attached before the fiber bundle passes through the tensioning component 41 and is wound around the adhesive roller 112. In this embodiment, the effect of adhering magnetized nanoparticles to the fiber bundle is achieved by attaching static electricity to the fiber bundle; in this embodiment, a static electricity generating device is used to perform static electricity treatment on the fiber bundle, wherein a friction plate (to generate static electricity by rubbing or colliding the glass fiber) or a method such as electrostatic induction can be used to generate static electricity in the fiber bundle.

[0056] Furthermore, the fiber bundle is passed through a nanoparticle holding device so that the surface of the fiber bundle after passing through the nanoparticle holding device is covered with nanoparticles with the same alignment direction; of course, in another embodiment, the surface of the fiber bundle can also be covered with nanoparticles with the same alignment direction by spraying nanoparticles onto the electrostatic fiber bundle.

[0057] like Figure 1 As shown, according to one embodiment of the present invention, the present invention provides a method for preparing an epoxy resin film containing nanoparticles, comprising: In the direction away from the carrier, a vacuum silicone layer, a water-soluble polymer film layer, and a silane coupling agent layer are arranged sequentially. In this embodiment, a regular glass slide can be used as the carrier for preparing the epoxy resin film, wherein the external dimensions of the glass slide are consistent with the external dimensions of the epoxy resin film to be prepared. In this embodiment, the vacuum silicone layer is coated onto the surface of the glass slide using a vacuum silicone coating method. Then, a water-soluble polymer film layer is attached to the vacuum silicone layer by a bonding method. The water-soluble polymer film layer can be obtained by pre-preparation. Furthermore, a silane coupling agent layer is coated on the formed water-soluble polymer film layer, thereby completing the overall structural arrangement of the carrier.

[0058] An epoxy resin colloid containing nanoparticles is disposed on a silane coupling agent layer, wherein the nanoparticles are magnetized.

[0059] Apply a magnetic field to align the magnetized nanoparticles; see also Figure 2 and Figure 3 As shown, in this embodiment, the carrier is fixed as a whole on a thin film spin coater, and a magnetic sheet is added to the other side of the carrier fixed on the thin film spin coater so that the magnetized nanomaterials are aligned. The obtained epoxy resin colloid is coated on the silane coupling agent layer so that the epoxy resin colloid can adhere to the water-soluble polymer film layer. Then, by adjusting the rotation speed of the thin film spin coater, an uncured epoxy resin film containing nanoparticles of a preset thickness can be obtained.

[0060] The nanoparticle-containing epoxy resin colloid is cured, and a water-soluble polymer film layer is dissolved to obtain a nanoparticle-containing epoxy resin film. In this embodiment, the carrier is removed from the spin coater and placed in an oven at a preset temperature for a certain period of time to cure the formed nanoparticle-containing epoxy resin film. The film is then cooled to room temperature in the oven. Further, the cooled carrier is placed in a glass container filled with room temperature water and left to stand for a preset time to dissolve the water-soluble polymer film layer. This allows the cured nanoparticle-containing epoxy resin film to separate from the carrier. The separated nanoparticle-containing epoxy resin film is then removed and left to stand without drying to obtain the finished nanoparticle-containing epoxy resin film.

[0061] like Figure 1 As shown, according to one embodiment of the present invention, the nanoparticle-containing epoxy resin colloid is obtained by the following steps, which include: Take a preset amount of epoxy resin solution and curing agent, add silane coupling agent, and stir at room temperature for a preset time to obtain a first mixture; wherein, the preset time is 15~20 minutes; Nanoparticles were added to the first mixture and dispersed in an ultrasonic field to obtain a second mixture; The nanoparticles in the second mixture are magnetized by surface modification with magnetic nanoparticles or by carbonization of magnetic precursors. The air bubbles in the second mixture are then removed by a vacuum pump while the mixture is being stirred with magnetic force to obtain an epoxy resin colloid containing nanoparticles.

[0062] The above description is merely an example of a specific solution of the present invention. For any devices and structures not described in detail herein, it should be understood that they are implemented using common devices and methods already available in the art.

[0063] The above description is merely one embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A composite membrane containing nanoparticles, characterized in that, include: Multiple thin film layers (a) and fiber bundle layers (b) disposed between adjacent thin film layers (a); The thin film layer (a) is an epoxy resin film containing nanoparticles, or the fiber bundles in the fiber bundle layer (b) are attached with nanoparticles. The nanoparticles are magnetizable nanoparticles; The fiber bundle layer (b) is formed by attaching the film layer (a) to the winding roller (11), and after the tensioned fiber bundle is wound on the film layer (a), the fiber bundle is cut into fiber bundle segments arranged at equal intervals to form the fiber bundle layer (b).

2. The nanoparticle-containing composite membrane according to claim 1, characterized in that, If the thin film layer (a) is an epoxy resin film containing nanoparticles, it is obtained by the following steps: In the direction away from the carrier, a vacuum silica gel layer, a water-soluble polymer film layer, and a silane coupling agent layer are arranged sequentially. An epoxy resin colloid containing nanoparticles is disposed on the silane coupling agent layer, wherein the nanoparticles are magnetized. A magnetic field is applied to align the magnetized nanoparticles. The nanoparticle-containing epoxy resin colloid is cured, and the water-soluble polymer film layer is dissolved to obtain the thin film layer.

3. The nanoparticle-containing composite membrane according to claim 2, characterized in that, In the step of setting the nanoparticle-containing epoxy resin colloid on the silane coupling agent layer, the nanoparticle-containing epoxy resin colloid is obtained by the following steps, including: Take a preset amount of epoxy resin solution and curing agent, add silane coupling agent, and stir at room temperature for a preset time to obtain a first mixture; Nanoparticles were added to the first mixture and dispersed in an ultrasonic field to obtain a second mixture; The nanoparticles in the second mixture are magnetized by surface modification with magnetic nanoparticles or by carbonization of magnetic precursors, and the air bubbles in the second mixture are removed by a vacuum pump while being stirred with magnetic force to obtain epoxy resin colloid containing nanoparticles.

4. The nanoparticle-containing composite membrane according to claim 1, characterized in that, If the fiber bundles in the fiber bundle layer (b) are attached with magnetized nanoparticles, then the thin film layer (a) is an epoxy resin film; The fiber bundles with attached magnetized nanoparticles are obtained by the following steps: Electrostatics are applied to the fiber bundle, and magnetized nanoparticles adhere to the fiber bundle based on the applied electrostatics.

5. An apparatus for preparing the nanoparticle-containing composite film according to any one of claims 1 to 4, characterized in that, include: The winding module (1), the motor (2) connected to the winding module (1), the feed module (3) for supporting the motor (2), and the guide module (4) for conveying the fiber bundle. The winding module (1) includes: a winding roller (11) and an attachment plate (12); The winding roller (11) includes: a fixed roller (111) and an adhesive roller (112) sleeved on the outside of the fixed roller (111). A temperature control module (111a) and a temperature sensor module (111b) are arranged on the outer side of the fixed roller (111). Along the axial direction of the fixed roller (111), multiple temperature control modules (111a) are provided at equal intervals; The temperature sensor module (111b) is disposed between adjacent temperature control modules (111a); Along the radial direction of the winding roller (11), the temperature control module (111a) and the temperature sensor module (111b) are spaced apart from the adhesive roller (112); The feed module (3) is linearly driven, and its driving direction is consistent with the axial direction of the winding roller (11). The guide module (4) includes: a tensioning component (41) and a transparent ruler (42); The tensioning assembly (41) and the winding roller (11) are spaced apart, and the transparent scale (42) is disposed between the tensioning assembly (41) and the winding roller (11); The transparent ruler (42) includes: a transparent substrate (421), a tension reference mark (422), a tension scale mark (423), and a position scale mark (424) disposed on the transparent substrate (421). The tension reference mark (422) and tension scale mark (423) are arranged along the fiber bundle conveying direction; The position scale marks (424) are arranged at equal intervals, and the multiple position scale marks (424) are arranged along the vertical fiber bundle conveying direction.

6. The preparation apparatus according to claim 5, characterized in that, The tensioning assembly (41) includes: a first tensioning roller (411) and a second tensioning roller (412). The first tension roller (411) and the second tension roller (412) are spaced apart; The tension reference mark (422) is symmetrically arranged on both sides of the tension scale mark (423).

7. A method for preparing a nanoparticle-containing composite film using the preparation apparatus according to any one of claims 5 to 6, characterized in that, The nanoparticle-containing composite membrane includes: a plurality of thin film layers (a) and fiber bundle layers (b) disposed between adjacent thin film layers (a); The thin film layer is an epoxy resin film containing nanoparticles, or the fiber bundles in the fiber bundle layer (b) are attached with nanoparticles. The nanoparticles are magnetized nanoparticles; The preparation method includes the following steps: S1. A film layer (a) is attached to the adhesive roller (112) of the winding roller (11); S2. Pass the fiber bundle through the tensioning assembly (41) of the guide module (4) and adhere it to the film layer (a) of the adhesive roller (112); S3. The tension and position of the fiber bundle are calibrated based on the tensioning component (41) and the transparent scale (42); S4. The feed module (3) drives the winding roller (11) to move along its axial direction at a preset speed, while the motor (2) drives the winding roller (11) to rotate at a preset speed. S5. After the fiber bundle is wound on the film layer (a), the feeding module (3) and the motor (2) are stopped, and the fiber bundle is cut along the docking position of the film layer (a) on the adhesive roller (112) to form a fiber bundle layer (b) on the film layer (a). S6. Take another film layer (a) and attach it to the previous film layer (a) to cover the fiber bundle layer (b) between the two film layers (a); S7. Repeat steps S2 to S6 until the thickness of the fiber bundle layer (b) reaches the preset requirement; S8. The temperature of the adhesive roller (112) is controlled by the temperature control module (111a) in the winding roller (11) so that the prepared nanoparticle-containing composite film is debonded from the surface.

8. The method according to claim 7, characterized in that, In step S1, the step of attaching a film layer (a) to the adhesive roller (112) of the winding roller (11) includes: S11. Adhere the end of the film layer (a) to the surface of the adhesive roller (112); S12. Adjust the position of the attachment plate (12) relative to the adhesive roller (112) so that the attachment plate (12) presses against the film layer (a); S13. Rotate the adhesive roller (112) to adhere the film layer (a) to the surface of the adhesive roller (112) based on the pressing action of the adhesive plate (12).

9. The method according to claim 7, characterized in that, The thin film layer (a) is obtained by the following steps: In the direction away from the carrier, a vacuum silica gel layer, a water-soluble polymer film layer, and a silane coupling agent layer are arranged sequentially. An epoxy resin colloid containing nanoparticles is disposed on the silane coupling agent layer, wherein the nanoparticles are magnetized. A magnetic field is applied to align the magnetized nanoparticles. The nanoparticle-containing epoxy resin colloid is cured, and the water-soluble polymer film layer is dissolved to obtain the nanoparticle-containing epoxy resin film.

10. The method according to claim 9, characterized in that, The nanoparticle-containing epoxy resin colloid is obtained by the following steps: Take a preset amount of epoxy resin solution and curing agent, add silane coupling agent, and stir at room temperature for a preset time to obtain a first mixture; wherein, the preset time is 15~20 minutes; Nanoparticles were added to the first mixture and dispersed in an ultrasonic field to obtain a second mixture; The nanoparticles in the second mixture are magnetized by surface modification with magnetic nanoparticles or by carbonization of magnetic precursors, and the air bubbles in the second mixture are removed by a vacuum pump while being stirred with magnetic force to obtain the epoxy resin colloid containing nanoparticles.

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