CN112691558B - Preparation method and system of membrane material - Google Patents
Preparation method and system of membrane material Download PDFInfo
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- CN112691558B CN112691558B CN202011413263.7A CN202011413263A CN112691558B CN 112691558 B CN112691558 B CN 112691558B CN 202011413263 A CN202011413263 A CN 202011413263A CN 112691558 B CN112691558 B CN 112691558B
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Abstract
The application discloses a preparation method and a system of a membrane material. The preparation method of the membrane material comprises the following steps: and a step of rotating a rotating body, wherein a selected region on the surface of the rotating body is brought into contact with a film forming solution when the selected region is rotated to a first position, the film forming solution is allowed to adhere to the selected region to form a liquid film, and the liquid film is allowed to continue to rotate from the first position to a second position with the selected region to form a film material. The controllable preparation of various membrane materials can be realized by the method, the thickness, the area, the components, the structure and the like of the membrane materials are easy to regulate and control, the membrane preparation efficiency is high, the obtained membrane materials are good in quality and low in cost, the method is suitable for the requirement of large-scale production, and the method has important application value particularly in the field of preparing high-quality, high-performance or special-performance membranes.
Description
Technical Field
The application particularly relates to a preparation method and a system of a membrane material, and belongs to the technical field of controllable preparation of membrane materials.
Background
The existing film material preparation method can be divided into a dry film preparation method and a wet film preparation method, wherein the wet film preparation method is widely applied. The wet film-making process is mainly to make the solution or dispersion of film-forming material undergo the process of removing solvent to form film. The conventional film-making method includes suction filtration, phase separation, solvent evaporation and the like. The film preparation by the suction filtration method is suitable for preparing films with small area and small thickness, and the phase separation method needs a proper coagulating bath for participation. The solvent evaporation method has wider application in the field of nano material film preparation, and generally comprises two steps of spreading a solution and evaporating the solvent, which roughly comprise: the solvent evaporation process is mainly performed by uniformly coating the solution or dispersion on the surface of the substrate by using a blade coating method, a spin coating method, a brush coating method and the like, and the solvent evaporation process mainly occurs at the interface of the mixed liquid and air, so that the thickness of the coated solution or dispersion needs to be strictly controlled so as not to affect the film forming quality and the liquid evaporation efficiency. In the evaporation solvent method, it is generally necessary to use a heating device to assist the evaporation of the liquid in order to shorten the film forming time. However, the existing film-making equipment by the evaporation solvent method still has certain defects in the aspects of film structure controllability, film-making efficiency and the like, so improvement is needed.
Disclosure of Invention
The present application is directed to a method and system for preparing a film material, so as to overcome the disadvantages of the prior art.
In order to achieve the above purpose, the present application adopts a technical solution comprising:
some embodiments of the present application provide a method of making a film material, comprising: and a step of rotating a rotating body, wherein a selected region on the surface of the rotating body is brought into contact with a film forming solution when the selected region is rotated to a first position, the film forming solution is allowed to adhere to the selected region to form a liquid film, and the liquid film is allowed to continue to rotate from the first position to a second position with the selected region to form a film material.
In some embodiments, the preparation method specifically comprises:
a first step comprising: contacting a selected area of the surface of the rotating body with a first film forming liquid when the selected area is rotated to a first position, and allowing the first film forming liquid to adhere to the selected area to form a first liquid film, and then allowing the first liquid film to continuously rotate from the first position to a second position along with the selected area to form a first film material layer; and
a second step comprising: enabling the selected area on the surface of the rotating body to be in contact with a second film-forming liquid when the selected area continuously rotates to the first position from the second position, enabling the second film-forming liquid to be attached to the first film material layer of the selected area and form a second liquid film, and then enabling the second liquid film to form a second film material layer covering or laid on the first film material layer when the second liquid film continuously rotates to the second position along with the selected area from the first position;
the first membrane-forming liquid and the second membrane-forming liquid are the same or different, and the first position and the second position are different.
Further, the first step and the second step may be repeated one or more times, thereby forming a composite film having a multi-layer structure on the surface of the rotating body.
In some embodiments, the first and second casting solutions differ in at least one chemical or physical property.
Some embodiments of the present disclosure provide a method for preparing a film material, including:
making a local area at the lower part of a cylinder, which is arranged along the horizontal direction along an axis, contact with the liquid surface of a first membrane-forming liquid in a container or be immersed in the first membrane-forming liquid;
rotating the cylinder in a clockwise or anticlockwise direction, and enabling the first membrane-forming solution to adhere to the surface of the cylinder and form a first liquid membrane;
heating and/or electromagnetically irradiating the first liquid film to form a first film material layer when the first liquid film continuously rotates to a film forming station along with the cylinder;
enabling the first membrane material layer to continuously rotate along with the cylinder body and to be in contact with the liquid surface of a second membrane making solution contained in the container or to be immersed in the second membrane making solution, and enabling the second membrane making solution to be attached to the first membrane material layer to form a second liquid membrane;
enabling the second liquid film to be at least heated and/or electromagnetically irradiated to form a second film material layer when the second liquid film continuously rotates along with the cylinder body to the film forming station;
the first membrane-forming solution and the second membrane-forming solution are the same or different.
Further, each operation in the preparation method may be repeatedly performed.
Some embodiments of the present application provide a film material preparation system comprising:
a rotating body, a partial area of the lower part of which is in contact with or immersed in a film-forming solution, the film-forming solution being capable of adhering to the surface of the rotating body and forming a liquid film when the rotating body rotates;
the film forming device is at least used for enabling the liquid film to form a film material by heating and/or electromagnetic radiation when the liquid film rotates to a film forming station along with the rotating body.
Compared with the prior art, the technical scheme provided by the embodiment of the application can realize controllable preparation of various film materials, the thickness, the area, the components, the structure and the like of the film materials are easy to regulate and control, the film preparation efficiency is high, the obtained film materials have good quality and low cost, and the method is suitable for the requirement of large-scale production and especially has important application value in the field of preparing high-quality, high-performance or special-performance films.
Drawings
FIG. 1 is a schematic diagram of a system for preparing a film material according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a process for preparing a membrane material using the membrane material preparation system shown in FIG. 1;
FIG. 3 is a schematic structural view of a shell structure composite membrane prepared in an example of the present application;
FIG. 4 is an electron micrograph of a SWCNT/PVP film product prepared in accordance with an embodiment of the present application after carbonization;
FIG. 5 is an electron microscope image of a polydimethylsiloxane film of a multilayer structure prepared in accordance with an embodiment of the present application.
Detailed Description
In view of the deficiencies in the prior art, the inventors of the present application have made extensive studies and extensive practices to provide the technical solutions of the present application. The technical solution, the implementation process and the principle thereof will be further explained with reference to the drawings.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
One aspect of the embodiments of the present application provides a method for preparing a film material, including: and rotating a rotating body, enabling the selected area on the surface of the rotating body to contact with the film-forming liquid when the selected area rotates to the first position, enabling the film-forming liquid to adhere to the selected area to form a liquid film, and then enabling the liquid film to continuously rotate from the first position to the second position along with the selected area to form the film material.
Further, the film-forming solution adheres to a selected region of the surface of the rotating body by a pulling action caused by rotation of the rotating body when the film-forming solution contacts the selected region, and forms a liquid film having a predetermined thickness.
In some embodiments, the preparation method specifically comprises:
a first step comprising: contacting a selected area of the surface of the rotating body with a first film forming liquid when the selected area is rotated to a first position, and allowing the first film forming liquid to adhere to the selected area to form a first liquid film, and then allowing the first liquid film to continuously rotate from the first position to a second position along with the selected area to form a first film material layer; and
a second step comprising: making the selected area of the surface of the rotating body contact with a second membrane-forming solution when continuously rotating from the second position to the first position, and making the second membrane-forming solution adhere to the first membrane material layer of the selected area to form a second liquid membrane, and then making the second liquid membrane form a second membrane material layer covering or laid on the first membrane material layer when continuously rotating from the first position to the second position along with the selected area;
the first membrane-forming liquid and the second membrane-forming liquid are the same or different, and the first position and the second position are different.
Further, the preparation method also comprises the following steps: repeating the first and second steps one or more times to form a composite film having a multi-layer structure on the surface of the rotating body.
In some embodiments, the first and second casting solutions differ in at least one chemical or physical property. The chemical properties include, but are not limited to, the type of components contained in the membrane-forming solution, the concentration or content of each component, the pH, and the like. Including but not limited to temperature, viscosity, or other optical, electrical properties of the casting solution, etc.
For example, the first film-forming liquid may have at least one component that is different in type and/or content from the second film-forming liquid.
Wherein the liquid film formed from the film-forming solution can be converted into a corresponding film material by various mechanisms, depending mainly on the composition of the film-forming solution. For example, in some cases, the liquid film may be formed into a solid or semi-solid film material (e.g., a gel-like film material) by partially or completely removing the volatile components from the liquid film. Also for example, in some cases, the liquid film may be formed into a solid or semi-solid film material by causing one or more components of the liquid film to change their own properties (e.g., phase change, isomerization, denaturation, polymerization, etc.). Also for example, in some cases, the liquid film may be formed into a solid or semi-solid film material by reacting (e.g., cross-linking, polymerizing, etc.) two or more components of the liquid film with each other. Alternatively, a solid or semi-solid film material may be formed by a combination of the foregoing factors.
Further, the film-forming solution may be a liquid phase system, slurry, paste, or the like comprising at least one film-forming component and/or at least one solvent and/or dispersion medium and/or diluent, without being limited thereto.
The film forming component may be an organic material such as a high molecular polymer (for example, epoxy resin, polyurethane, silica gel, and the like, but not limited thereto), an inorganic material or an organic-inorganic composite material, and may also be various types of micro or nano particles, micro-nano wires or tubes or rods (such as carbon nanotubes, gold nanowires, silver nanowires, or other materials), micro-nano sheets (such as graphite micro-sheets, boron nitride nano-sheets, or other materials), and the like, but not limited thereto.
The solvent and/or dispersion medium and/or diluent may be water, an organic solvent, an ionic liquid, a resin, or other substance that aids in dispersing or dissolving the film-forming components, etc., which may or may not be chemically reactive with the remaining components in the film-forming solution.
The film-forming solution may also comprise other auxiliary components such as, but not limited to, dispersants, pigments, fillers, modifiers, and the like.
In some embodiments, any one of the specified size and/or shape of the local area on the surface of the rotating body can be contacted with the film-forming solution when the rotating body rotates to the first position, the film-forming solution can adhere to and form a liquid film on the any one of the specified size and/or shape of the local area, and the liquid film can form a corresponding film material when the rotating body rotates from the first position to the second position along with the any one of the specified size and/or shape of the local area.
In some embodiments, the rotating body rotates in a clockwise direction or a counterclockwise direction.
In some embodiments, the first position is one or more selected positions distributed on the lower portion of the rotating body, and the second position is one or more selected positions distributed on the upper portion of the rotating body.
In some embodiments, a film formation substrate is provided in advance on at least a selected region of the surface of the rotating body, and then the selected region is brought into contact with a film formation liquid, and the film formation liquid is allowed to adhere to the film formation substrate to form a liquid film.
The film-making substrate can be a flexible and bendable film material or a coating, and the material of the film-making substrate can be a high polymer material, a metal material (such as a metal foil, a metal mesh and the like), an inorganic material (such as a carbon nanotube film, a ceramic film and the like) or an organic-inorganic composite material.
In some embodiments, the deposition solution may be directly applied to the surface of the rotating body to form a liquid film.
In some embodiments, the method of making further comprises: the liquid film is at least heated and/or electromagnetically irradiated to form a film material when rotating from the first position to the second position along with the selected area, and the film material is cooled to a temperature close to or the same as that of the film-forming solution before continuously rotating from the second position to the first position or when reaching the first position along with the selected area, so that the film-forming solution is favorably attached to and uniformly coated on a film material layer formed in the previous process on the one hand, and the problem caused by the temperature difference between the film-forming solution and the surface of the rotating body (for example, the temperature difference can be eliminated, and the condition of the film-forming solution is prevented from being changed by heating the film-forming solution) can be eliminated on the other hand, and all film layers in the formed multilayer film can be tightly combined.
Further, the heating means may be selected from, but not limited to, thermal radiation, thermal convection heating, induction heating, microwave-assisted heating, and the like. The heat source employed may be selected from, but not limited to, lamps, resistive wires, warm or other radiant heat sources, convective heat sources, and the like.
Further, the selected area and the corresponding film material may be subjected to a cooling process by a temperature adjusting mechanism provided inside and/or outside the rotating body. The temperature adjusting mechanism may be, but is not limited to, an air cooling mechanism, a liquid cooling mechanism, a compression refrigeration mechanism, a semiconductor refrigeration mechanism, and the like. For example, an air cooling mechanism, a liquid cooling mechanism, a semiconductor cooling mechanism, or the like may be provided inside the rotating body, or an air cooling mechanism may be provided outside the rotating body, for example, at an appropriate position around the rotating body.
In some embodiments, the method of making further comprises: the liquid film is at least heated and/or electromagnetically irradiated to form a film material as the film rotates with the selected region from the first position to the second position.
Further, the electromagnetic radiation includes visible light, ultraviolet light radiation, microwave radiation, or the like.
In some embodiments, the method of making further comprises: such that the liquid film is at least partially freed of the contained volatile component before or upon rotation of the selected area from the first position to the second position.
In some embodiments, the preparation method further comprises: the rotating body is cylindrical, and a lower partial region of the rotating body is in contact with or is immersed in the surface of the deposition solution when the rotating body rotates, and corresponds to the first position.
Further, the rotating body may rotate about its axis, and the axis of the rotating body may be disposed in a horizontal direction.
In some embodiments, the surface of the rotating body is smooth to facilitate the production of a continuous flat film material.
In some embodiments, the surface of the rotating body may also have a patterned structure (e.g. an uneven pattern) to achieve the preparation of a patterned film material.
Alternatively, in some embodiments, the surface of the rotating body may be covered with a substrate having a patterned structure, so as to realize the preparation of the patterned film material.
In some embodiments, the method of making further comprises: the thickness and/or the order of the membrane material are regulated and controlled at least by regulating the rotating speed of the rotating body and/or the type and/or the content of the membrane forming material in the membrane-forming solution.
For example, the rotating speed of the rotating body can be adjusted, so that the thickness of a liquid film formed by the film-making liquid on the surface of the rotating body can be adjusted, and the thickness of the formed film material can be adjusted.
For example, if the film-forming component in the film-forming solution is a material such as carbon nanotubes or silver nanowires, the rotational speed of the rotating body can be adjusted to orient and distribute the film-forming component in the liquid film adhering to the surface of the rotating body as desired, thereby controlling the degree of orientation of the film-forming material in the formed film material and realizing the production of a highly ordered film material. In addition, the centrifugal force generated by the rotation of the rotating body can be utilized to distribute the same or different film-forming components in the liquid film attached to the surface of the rotating body in different distribution densities in different areas of the liquid film, so that the preparation of special film materials such as gradient films can be realized.
Another aspect of the embodiments of the present application provides a method for preparing a film material, including:
making a local area at the lower part of a cylinder, which is arranged along the horizontal direction along an axis, contact with the liquid surface of a first membrane-forming liquid in a container or be immersed in the first membrane-forming liquid;
rotating the cylinder in a clockwise or anticlockwise direction, and enabling the first membrane-forming solution to adhere to the surface of the cylinder and form a first liquid membrane;
at least heating and/or electromagnetically irradiating the first liquid film to form a first film material layer when the first liquid film continuously rotates to a film forming station along with the cylinder;
enabling the first membrane material layer to continuously rotate along with the cylinder body and to be in contact with the liquid surface of a second membrane making solution contained in the container or to be immersed in the second membrane making solution, and enabling the second membrane making solution to be attached to the first membrane material layer to form a second liquid membrane;
enabling the second liquid film to be at least heated and/or electromagnetically irradiated to form a second film material layer when the second liquid film rotates with the cylinder body to the film forming station;
the first membrane-forming solution and the second membrane-forming solution are the same or different.
Further, each process may be repeated a plurality of times in the foregoing manufacturing method to obtain a uniform film or a multilayer film having a desired thickness. The multiple film layers in the multilayer film are made of the same material or different materials, and if the multiple film layers are made of different materials, the multiple film layers can be alternately distributed or sequentially distributed according to a set sequence.
In some embodiments, the method of making further comprises: firstly, the first liquid film or the second liquid film rotates along with the cylinder to a film pre-forming station and at least part of volatile components contained in the first liquid film or the second liquid film is removed, and then the first liquid film or the second liquid film continuously rotates along with the cylinder to the film forming station.
In some embodiments, the method of making further comprises: and before the first membrane material layer continuously rotates along with the cylinder and is in contact with the liquid surface of a second membrane making solution or is immersed in the second membrane making solution, the temperature of the first membrane material layer is adjusted to be close to or the same as the second membrane making solution at least through a temperature adjusting mechanism.
In some embodiments, the preparation method further comprises: and covering a film-making substrate on the surface of the cylinder in advance, then contacting or immersing a local area at the lower part of the cylinder with the liquid surface of the first film-making solution, and then rotating the cylinder.
In some embodiments, the method of making further comprises: regulating the thickness and/or order of the membrane material by regulating at least the rotation speed of the cylinder and/or the type and/or content of the membrane forming material in the membrane-forming liquid.
Another aspect of the embodiments of the present application provides a film material preparation system including:
a rotating body, a partial area of the lower part of which is in contact with or immersed in a film-forming solution, the film-forming solution being capable of adhering to the surface of the rotating body and forming a liquid film when the rotating body rotates;
the film forming device is at least used for enabling the liquid film to form a film material through heating and/or electromagnetic radiation when the liquid film rotates to a film forming station along with the rotating body.
In some embodiments, the film forming apparatus includes a heating device for at least:
at least part of the volatile components are removed by heating when the liquid film rotates to a film pre-forming station along with the rotating body,
and heating the liquid film at least partially removed from the volatile component to form a film material when the liquid film rotates along with the rotating body from the film pre-forming station to the film forming station.
Further, the pre-filming station and the filming station can be distributed on the upper part and/or at least one side part of the rotating body.
Further, the heating device may be one or more. For example, the plurality of heating devices may be sequentially arranged along the rotation direction of the rotating body, may be sequentially arranged along a direction parallel to the axis of the rotating body, or may be arranged in a composite manner. For example, in the case where a certain substance as a precursor or an intermediate is required as a film-forming material and a thin film composed of a target transformant of the precursor or the intermediate is required to be obtained, the former method may be adopted, in which a film-forming solution containing the precursor or the intermediate is dried by one or more heating apparatuses, and then the film layer is partially or completely converted into the target transformant by another one or more heating apparatuses. This former approach is also applicable to situations where a gradient solidification of the membrane material is required. The latter is applicable to curing of film materials having a large width.
Further, the film forming apparatus may further include one or more heating devices and one or more electromagnetic radiation devices at the same time to accommodate the combination of thermal curing and electromagnetic radiation curing.
In some embodiments, the distance between the film formation device and the surface of the rotating body is adjustable.
Further, the film forming device is also connected with a lifting driving mechanism and/or a horizontal driving mechanism, and the lifting driving mechanism and the horizontal driving mechanism are respectively used for driving the film forming device to move along the vertical direction and the horizontal direction.
In some embodiments, the preparation system further comprises: and the temperature adjusting mechanism is at least used for adjusting the temperature of the membrane material to be close to or the same as the membrane forming solution before the membrane material formed on the surface of the rotating body continuously rotates along with the rotating body and is contacted with the liquid surface of the membrane forming solution or is immersed in the membrane forming solution.
Further, the temperature adjusting mechanism includes a liquid cooling mechanism disposed in the rotating body and/or an air cooling mechanism disposed inside and/or outside the rotating body, but is not limited thereto.
For example, the cooling mechanism includes a sealed cavity formed in a rotating body, the sealed cavity is communicated with a cooling medium channel distributed in a rotating shaft, the rotating body is connected with the rotating shaft, and the rotating body can rotate around the rotating shaft under the driving of a rotating driving mechanism.
In some embodiments, the preparation system further comprises: a temperature monitoring mechanism for monitoring at least a temperature of the surface of the rotating body.
In some embodiments, the rotating body is connected to a rotational drive mechanism for driving the rotating body in rotation. The rotation driving mechanism may include a motor and the like in transmission connection with the rotating shaft of the rotating body, wherein the transmission mechanism may be a gear mechanism, a belt mechanism and the like, and is not limited thereto.
In some embodiments, the rotating body is further connected with a translation driving mechanism and/or a lifting driving mechanism, the translation driving mechanism is used for driving the rotating body to move along the axis of the rotating body, and the lifting driving mechanism is used for driving the rotating body to move along the vertical direction. For example, a plurality of liquid tanks can be arranged below the rotating body in parallel, and the rotating body is driven to lift along the vertical direction and translate along the axial direction, so that the rotating body can be contacted with membrane preparation liquids in different liquid tanks, and the requirements for preparing composite membranes made of different materials are met.
In some embodiments, the container includes a liquid tank disposed below the rotating body, and the liquid tank is further connected to a lifting driving mechanism and/or a horizontal driving mechanism, and the lifting driving mechanism and the horizontal driving mechanism are respectively used for driving the liquid tank to move in a vertical direction and a horizontal direction. For example, the height of the liquid tank can be adjusted by the elevation drive mechanism, and the contact area between the surface of the rotary body and the deposition solution in the liquid tank can be adjusted. The different liquid tanks can be switched by the horizontal driving mechanism, so that the surface of the rotating body is contacted with the membrane-making liquid in the different liquid tanks. Of course, one or more liquid inlets and one or more liquid outlets may be disposed on the liquid tank, and the membrane-forming liquid in the liquid tank may be replaced or the components and volume of the membrane-forming liquid in the liquid tank may be adjusted through the liquid inlets and the liquid outlets.
The lifting driving mechanism, the translation driving mechanism and the horizontal driving mechanism can adopt a hydraulic or pneumatic telescopic driving mechanism or other mechanical, electric or electromagnetic driving mechanisms.
In some embodiments, the rotating body is cylindrical, frustoconical, or wheel-shaped.
In some embodiments, the rotating body is a hollow structure or a solid structure.
In some embodiments, the surface of the rotating body is smooth.
In some embodiments, the surface of the rotating body has a defined microstructure, such as a defined relief structure.
In some embodiments, the rotating body is a cylindrical body rotatable about its axis, and the axis of the cylindrical body is arranged in a horizontal direction.
In some embodiments, the manufacturing system further includes a control unit connected to at least the driving mechanism of the rotating body and the film forming device.
In some embodiments, the film forming apparatus may also be omitted. For example, for some film-forming liquids, after they adhere to the surface of the rotating body to form a liquid film, the liquid film can be spontaneously converted into a film material during the rotation of the rotating body. For example, a film-forming solution contains a film-forming component and a solvent that is easily volatilized, and the solvent is rapidly volatilized during the rotation of a liquid film formed therefrom with a rotating body, and the remaining film-forming component is self-assembled to form a film material without the need for assistance of light, heat, or the like.
Further, the control unit may be connected to the temperature monitoring mechanism, the driving mechanism of the liquid tank, the temperature adjusting mechanism, and the like. Through the control unit, various working parameters of the film material preparation system, such as the rotating speed, the heating temperature, the height of the liquid tank, the refrigerating speed and the like of the cylinder body can be set or adjusted according to actual requirements, so that the automatic production of the film material is realized.
The technical solutions and the working principles of the present application will be further explained with reference to the drawings and several specific embodiments, but it should not be understood that the scope of the subject matter of the present application is limited to the following embodiments. Various substitutions and alterations can be made without departing from the technical idea of the application and according to the common technical knowledge and the conventional means in the field, and all the substitutions and alterations are included in the protection scope of the application.
Referring to fig. 1, a film material manufacturing system according to a first embodiment of the present disclosure includes a roller 10 rotatable around its axis and a film forming device 30 coupled to the roller. When the membrane material preparation system is used for preparing a membrane material, the lower end (defined as a position i) of the roller 10 is in contact with the liquid surface of the membrane-forming liquid 20, and the membrane-forming device 30 is arranged corresponding to the position ii.
Referring to FIGS. 1 and 2, by driving the roller 10 to rotate, the film-forming solution 20 adheres to the surface of the roller at position i and forms a liquid film 50, and then the liquid film 50 rotates with the roller to position ii, where it is converted into a film material 60 by heat energy or electromagnetic radiation 40 (such as hot air, heat radiation, light, microwave, etc.) provided by the film-forming apparatus 30.
When the film-forming liquid 20 contains a volatile component such as a solvent, the liquid film 20 may be partially dried (i.e., a part of the volatile component is removed) during the process of rotating from the position i to the position ii with the roller 10, and the drying process may be performed naturally or with the aid of some auxiliary equipment. For example, optional auxiliary equipment includes, but is not limited to, fans, dryers, and the like.
In the case that the surface temperature of the roller 10 is raised by the heat energy or the electromagnetic radiation 40 provided by the film forming apparatus 30, the surface of the roller 10 can be cooled by a cooling mechanism arranged inside or outside the roller 10, so that the surface temperature of the roller 10 is adjusted to be the same as or close to the temperature of the film forming solution 20 when or before the roller is rotated from the position ii to the position i. These cooling mechanisms are not shown in fig. 1, but those skilled in the art may select various types of cooling mechanisms known in the art as appropriate, such as liquid cooling mechanisms, air cooling mechanisms, and the like.
By continuously rotating the roll 10 while keeping the lower portion thereof in contact with the film forming solution 20, and with the aid of the film forming apparatus 30, a continuous film material can be formed on the surface of the roll 10 according to the above-described mechanism.
The roll 10 may be of hollow construction or of solid construction.
The roll 10 may be connected to a rotating shaft (not shown) and rotated by a motor or the like (not shown).
The rotation speed of the roller can be adjusted by a frequency converter and a transmission gear (such as a reduction gear) connected with the motor, and can be controlled to be 0.001 rpm to 10000 rpm, for example, and is not limited thereto.
The size of the roll 10 can be adjusted according to the actual requirements.
The material of the roller 10 can be metal, polymer material or other materials.
Preferably, the surface of the roller 10 has high strength and hardness, and is regular in structure, cylindrical and smooth and flat.
During operation, a film-making substrate can be added on the surface of the roller 10, and the film-making substrate is a flexible and bendable film material or coating, and can be a high polymer material, a metal foil, an inorganic material or a composite material thereof. Of course, in some embodiments, the surface of the roll 10 may be in direct contact with the casting solution without the addition of a casting substrate.
The cooling mechanism can comprise a fluid channel arranged in the rotating shaft, the fluid channel is communicated with a water inlet and a water outlet which are arranged at two ends of the rotating shaft and is connected with external cooling liquid supply equipment and a pressure pump through the water inlet and the water outlet, the fluid channel is also communicated with a sealed cavity in the hollow roller to form a cooling medium flow channel, so that the cooling medium can cool a local area at the lower part of the hollow roller, and the cooling medium flow channel, the external cooling liquid supply equipment and the pressure pump form a circulating liquid cooling assembly and keep the circulation of the cooling medium together. The cooling medium may be water, ethanol, acetone, or other fluid, and is not limited thereto. In some alternatives, air cooling equipment or the like may be provided around the roll 10 and the roll surface may be maintained at a suitable temperature by cooling a localized area of the lower portion of the roll using the air cooling equipment. In other alternatives, the partial region of the lower portion of the pair of rolls may be cooled by natural cooling without providing the cooling medium flow passage, the air cooling device, or the like.
The film-forming solution 20 may be contained in a solution tank 70. The fluid bath 70 should be chemically stable enough to avoid corrosion with the casting solution. The size of the liquid groove 70 is to ensure that the roller 10 can contact the liquid surface of the membrane-making liquid 20, and the width of the liquid groove is larger than that of the roller, so that the edge of the liquid groove is prevented from contacting the roller.
In some cases, the roller 10 may be connected to an elevating mechanism and/or a translation mechanism, and at least the vertical distance between the roller 10 and the liquid tank 70 may be adjusted by the elevating mechanism, or the relative position between the roller 10 and the liquid tank 70 in the horizontal direction may also be adjusted by the translation mechanism. Alternatively, it is also possible to facilitate the replacement of different rollers 10 by means of a lifting mechanism, a translation mechanism.
In some cases, the liquid tank 70 may be connected to an elevating mechanism and/or a translation mechanism, and at least the distance between the liquid tank 70 and the drum 10 may be adjusted by the elevating mechanism, or the relative position between the liquid tank 70 and the drum in the horizontal direction may be adjusted by the translation mechanism. Alternatively, it is also possible to replace a different fluid bath or the like by a translation mechanism.
The lifting mechanism and the translating mechanism may be any type known in the art, such as a hydraulic lifting platform, a mechanical lifting platform, a cart, a rail car, a robot arm, and the like, and are not limited thereto.
The aforementioned film forming apparatus 30 may be various types of heating devices, light irradiation devices, electromagnetic wave emission devices, and the like. Taking a heating hood as an example of the film forming apparatus, it is used to heat at least a partial region of the upper part of the roll 10. The heating cover can also be externally connected with temperature sensing equipment such as a thermocouple, an infrared temperature measuring probe and the like and a temperature control system, the temperature in the heating cover can be monitored through the thermocouple, and the temperature control system can adjust the working state of the heating cover according to the detection signal of the thermocouple. Wherein, the film forming device can also be connected with some lifting and/or translation mechanisms, so that the relative position of the film forming device and the roller can be adjusted. Suitable lifting and/or translating mechanisms include, without limitation, lifting brackets, robotic arms, and the like. The heating device may be in the form of thermal radiation or thermal convection, and the heat source may be a lamp, a resistance wire, a fan heater, other radiation heat source, a convection heat source, or other non-contact heating device, and the heating temperature of the heating device may be adjustable, for example, between room temperature and 1000 ℃, and is not limited thereto. According to the knowledge in the art, the operating state of the film forming apparatus 30 can be controlled by a control module or the like connected thereto.
The film-forming component in the film-forming solution includes, but is not limited to, two-dimensional materials, organic polymer materials, organic nanomaterials, inorganic nanomaterials, or other various materials prepared into solutions or dispersions.
The method for preparing the membrane material by using the membrane material preparation system shown in fig. 1 specifically comprises the following steps:
a film-making substrate is laid on the surface of the roller 10 in advance (or the film-making substrate is not laid);
rotating the roller 10 to make the film-forming liquid form a continuous and uniform liquid film on the film-forming substrate by rotary lifting;
the liquid film is rotated to the corresponding position of the film forming device 30 along with the roller 10, the solvent and the like are removed or the film material is crosslinked or polymerized under the action of heating or illumination and the like of the film forming device 30 to form the film material, and because the temperature of the film material is possibly higher, the film material can be cooled to the same temperature as or similar to that of the film forming liquid by using a cooling medium in the roller 10 or external cooling equipment, and then the film material is continuously rotated along with the roller 10 and contacts with the film forming liquid 20 again (the film forming liquid can not be replaced or replaced), so that the processes of lifting, heating, cooling, dipping (contacting with the film forming liquid) and the like are circularly carried out, and the film material with tightly stacked and controllable thickness is prepared by layer-by layer stacking.
In the preparation method, the continuous dipping and pulling of the membrane-making solution can be realized by adjusting the rotating speed of the roller 10, so that the membrane-making solution is uniformly dispersed on the membrane-making substrate on the surface of the roller 10, and the membrane-making solution can form ordered arrangement under the action of shearing force and gravity.
Taking the film-forming solution as a polymer solution and a nano-material dispersion as examples, the process for preparing the continuous film by using the apparatus shown in fig. 1 may include:
a. covering a film-making substrate on the surface of the roller, and enabling the lower end of the surface of the roller to be in contact with the liquid level of the polymer solution;
ii. Rotating the roller, and assembling the polymer solution on the surface of the roller under the rotating and pulling action of the roller to form a layer of polymer liquid film;
b. the polymer liquid film continuously rotates along with the roller, and is dried and cured under the irradiation of equipment such as an ultraviolet lamp and/or the heating of equipment such as an infrared lamp and the like to form a polymer film attached to the surface of the roller;
c. the polymer film continuously rotates along with the roller, is forcibly cooled to room temperature (or can be naturally cooled), and then is contacted with the nano material dispersion liquid (or another polymer solution);
d. rotating the roller, and self-assembling the nano material dispersion liquid (or another polymer solution) on the polymer film under the rotating and pulling action of the roller to form a nano material dispersion liquid film (or another polymer solution film);
e. the nano material dispersion liquid film (or another polymer solution film) continuously rotates along with the roller, and is dried and cured under the irradiation and heating of an ultraviolet lamp, an infrared lamp and the like to form a nano material film (or another polymer film) attached on the surface of the hollow roller;
f. the nano material film continuously rotates along with the roller, is cooled to room temperature and then is contacted with a polymer solution (which can be the same as or different from the polymer solution) or a nano material dispersion liquid (which can be the same as or different from the nano material dispersion liquid);
g. and (3) repeating the steps a-f circularly to finally obtain the composite film with the shell structure, wherein the structure can be shown in figure 3.
The nano material dispersion liquid can contain one or more of zero-dimensional nano materials (such as various nano particles), one-dimensional nano materials (such as various nanowires, tubes, rods and the like) and two-dimensional nano materials (such as boron nitride, molybdenum sulfide nano sheets and the like).
In the step b, the thickness of the polymer liquid film formed may be adjusted by controlling the rotation speed of the roll, the concentration of the polymer solution, etc., and the thickness of the polymer film in the step c may be adjusted, etc.
In the step d, the thickness of the nanomaterial dispersion film formed, the form of the nanomaterial assembled on the film-forming substrate, and the like can be adjusted by controlling the rotation speed of the roll, the concentration of the nanomaterial dispersion, and the like, and the thickness, structure, and the like of the nanomaterial film in the step e can be adjusted.
In a more specific embodiment, a method for preparing a boron nitride film by using the film material preparation system comprises the following steps:
i. processing hexagonal boron nitride into boron nitride nano-sheets by using a ball milling method, and preparing a boron nitride dispersion liquid with the concentration of 1mg/mL by using DMF (N, N-dimethylformamide) as a dispersing agent;
ii. Under the condition of room temperature, the lower end of the surface of a roller with the diameter of 32cm and the width of 15cm is directly contacted with the liquid surface of the boron nitride dispersion liquid;
iii, enabling the roller to rotate at the speed of 0.3 r/min, and enabling the boron nitride dispersion liquid to be assembled on the surface of the hollow roller under the rotating and pulling action of the roller to form a layer of boron nitride liquid film;
iv, enabling the boron nitride liquid film to continuously rotate along with the roller, and drying the boron nitride liquid film under the heating of an infrared lamp heat source at the temperature of 180 ℃ to form a boron nitride film attached to the surface of the roller, wherein the distance between the heat source and the surface of the roller is 3cm, and the temperature of the surface of the roller is 80 ℃;
and v, enabling the boron nitride film to continuously rotate along with the roller and be cooled to room temperature, and then continuously rotating along with the roller and contacting with the boron nitride dispersion liquid.
And (3) adjusting the repetition times of the steps ii-v to obtain a continuous boron nitride film with a single-layer or multi-layer structure, and adjusting the whole thickness of the film. In addition, in the multilayer boron nitride film, the thickness of each structural layer is uniform and can be controlled to be about 30 nm.
A method for preparing the SWCNT/PVP composite film by using the film material preparation system comprises the following steps:
i. preparing SWCNT (single-walled carbon nanotube), PVP (polyvinylpyrrolidone) and a dispersant SDBS (sodium dodecyl benzene sulfonate) into an aqueous SWCNT/PVP dispersion liquid with the concentration of 2mg/mL according to the proportion of 100;
ii. Under the condition of room temperature, the lower end of the surface of a hollow roller with the diameter of 32cm and the width of 7cm is directly contacted with the liquid surface of the SWCNT/PVP dispersion liquid;
iii, enabling the roller to rotate at the speed of 0.5 r/min, and enabling the SWCNT/PVP dispersion liquid to assemble on the surface of the roller to form a layer of SWCNT/PVP liquid film under the rotating and pulling action of the roller;
iv, enabling the SWCNT/PVP liquid film to continuously rotate along with the roller, and drying the SWCNT/PVP liquid film under the heating of an infrared lamp heat source at the temperature of 200 ℃ to form the SWCNT/PVP film attached to the surface of the roller, wherein the distance between the heat source and the surface of the roller is 3cm, and the temperature of the surface of the roller is 90 ℃;
v, continuing to rotate the SWCNT/PVP film with the roller and cooling to room temperature, and then continuing to rotate with the roller and contacting with the SWCNT/PVP dispersion.
By adjusting the repetition times of the steps ii-v, a continuous single-layer or multi-layer structure SWCNT/PVP film can be obtained, and the overall thickness of the film can be regulated. In addition, in the multi-layer structure SWCNT/PVP film, the thickness of each structural layer is uniform and can be controlled to be about 100 nm. The morphology of one of the SWCNT/PVP thin film products after carbonization at 500 ℃ is shown in fig. 4.
A method for preparing a multilayer composite film with a boron nitride (A) and cellulose (B) layer-by-layer stacking structure (ABAB structure) by using the film material preparation system comprises the following steps:
i. processing hexagonal boron nitride into boron nitride nano-sheets by using a ball milling method, and preparing a boron nitride dispersion liquid with the concentration of 0.5mg/mL by using DMF (N, N-dimethylformamide) as a dispersing agent;
ii. Preparing cellulose into a cellulose aqueous solution with the concentration of 10 mg/mL;
iii, directly contacting the lower end of the surface of a hollow roller with the diameter of 50cm and the width of 10cm with the liquid surface of the boron nitride dispersion liquid at room temperature;
iv, enabling the hollow roller to rotate at the speed of 1 r/min, and enabling the boron nitride dispersion liquid to be assembled on the surface of the hollow roller under the rotating and pulling action of the hollow roller to form a layer of boron nitride liquid film;
v, enabling the boron nitride liquid film to continuously rotate along with the hollow roller and be dried under the heating of an infrared lamp heat source with the temperature of 230 ℃ to form a boron nitride film attached to the surface of the hollow roller, wherein the distance between the heat source and the surface of the roller is 2.5cm, and the temperature of the surface of the roller is 130 ℃;
and vi, enabling the boron nitride film to continuously rotate along with the hollow roller and exchange heat with cooling water at 23 ℃ in the hollow roller so as to be cooled to room temperature, and then continuously rotating along with the hollow roller and contacting with the boron nitride dispersion liquid.
vii, repeating the steps iii to vi for 5 times to obtain a continuous boron nitride film having a multilayer structure.
viii, removing the boron nitride dispersion liquid, and placing the cellulose aqueous solution below the hollow roller so that the lower end of the surface of the hollow roller is directly contacted with the liquid level of the cellulose aqueous solution;
ix, enabling the hollow roller to rotate at the speed of 0.01 r/min, and enabling the cellulose aqueous solution to be assembled on the surface of the hollow roller under the rotating and pulling action of the hollow roller to form a layer of cellulose liquid film;
x, enabling the cellulose liquid film to continuously rotate along with the hollow roller and be dried under the heating of an infrared lamp heat source with the temperature of 200 ℃ to form a cellulose film attached to the surface of the hollow roller, wherein the distance between the heat source and the surface of the roller is 2.5cm, and the temperature of the surface of the roller is 80 ℃;
xi, enabling the cellulose membrane to continuously rotate along with the hollow roller and exchange heat with cooling water at 23 ℃ in the hollow roller so as to be cooled to room temperature, and then continuously rotating along with the hollow roller and contacting with a cellulose water solution;
xii, repeating the steps viii-xii for 2 times to obtain a continuous cellulose film with a multilayer structure;
xiii, alternately replacing the dispersion liquid below the hollow roller, and performing a rotary film making step to finally prepare the multilayer composite film with the structure of boron nitride and cellulose layer stacking.
A method for preparing a polydimethylsiloxane membrane by using the membrane material preparation system comprises the following steps:
i. using dimethyl siloxane monomer as film-forming liquid;
ii. Under the condition of room temperature, the lower end of the surface of a roller with the diameter of 100cm and the width of 30cm is directly contacted with the liquid level of a dimethyl siloxane monomer;
iii, enabling the roller to rotate at the speed of 0.05 r/min, and enabling the dimethyl siloxane monomer to assemble on the surface of the hollow roller to form a layer of dimethyl siloxane monomer liquid film under the rotating and pulling action of the roller;
iv, the boron nitride liquid film continuously rotates along with the roller and is cured under the heating of a convection heat source with the temperature of 200 ℃ to generate polymerization reaction, so that a polydimethylsiloxane film attached to the surface of the roller is formed, the distance between the heat source and the surface of the roller is 2cm, and the temperature of the surface of the roller is 150 ℃;
and v, enabling the polydimethylsiloxane film to continuously rotate along with the roller, and cooling the surface of the fixed roller by using a cooling fan.
And (3) adjusting the repetition times of the steps ii-v, obtaining the continuous polydimethylsiloxane film with a single-layer or multi-layer structure, and regulating and controlling the whole thickness of the film. In addition, in the polydimethylsiloxane film with the multilayer structure, the thickness of each structural layer is uniform and can be controlled to be about 5 mu m. The structure of a typical polydimethylsiloxane membrane of a multilayer structure obtained in this example is shown in FIG. 5.
A method for preparing a boron nitride thin epoxy acrylate photocuring film by using the film material preparation system comprises the following steps:
i. epoxy acrylate, tetramethylammonium chloride and hydroquinone are mixed according to the weight ratio of 100:1:0.5 is prepared into epoxy acrylate photo-curing sizing agent;
ii. Under the condition of room temperature, the lower end of the surface of a hollow roller with the diameter of 15cm and the width of 100cm is directly contacted with the liquid level of the epoxy acrylate photocuring slurry;
iii, enabling the hollow roller to rotate at the speed of 10 revolutions per minute, and assembling the epoxy acrylate light-cured slurry on the surface of the hollow roller under the rotating and pulling action of the hollow roller to form a layer of epoxy acrylate light-cured slurry liquid film;
iv, enabling the epoxy acrylate photocuring slurry liquid film to continuously rotate along with the hollow roller, and carrying out photocuring under the irradiation of an ultraviolet lamp with the wavelength range of 315-280nm above the roller to form an epoxy acrylate photocuring film attached to the surface of the hollow roller;
and v, enabling the epoxy acrylate photocuring film to continuously rotate along with the hollow roller and exchange heat with air so as to be cooled to room temperature, and then continuously rotating along with the hollow roller and contacting with the epoxy acrylate photocuring slurry.
And (3) adjusting the repetition times of the steps ii-v to obtain a continuous single-layer or multi-layer structure boron nitride thin epoxy acrylate photocuring film, and adjusting the overall thickness of the film. In addition, in the multilayer structure boron nitride thin epoxy acrylate photocuring film, the thickness of each structural layer is uniform and can be controlled to be about 100 nm.
By the technical scheme provided by the embodiment of the application, controllable multilayer assembly of the thickness, the area, the components and the like of the film material can be realized, the film making efficiency is high, the obtained film material has good quality and low cost, the preparation of a large-area film material can be realized in a short time, the method is suitable for the requirement of large-scale production, and the method has important application value particularly in the field of preparing high-quality, high-performance or special-performance films.
While the present application has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the scope thereof. Therefore, it is intended that the present application not be limited to the particular embodiments disclosed for carrying out the present application, but that the present application will include all embodiments falling within the scope of the appended claims.
Claims (24)
1. A method of preparing a film material, comprising: rotating a rotating body, contacting a selected region of the surface of the rotating body with a film-forming solution when the selected region is rotated to a first position, and allowing the film-forming solution to adhere to the selected region to form a liquid film, thereafter heating the liquid film while the selected region is continuously rotated from the first position to a second position to form a film material, and cooling the film material to the same temperature as the film-forming solution before or when the selected region is continuously rotated from the second position to the first position; wherein the rotating body is cylindrical, and the selected region is a partial region of the surface of the rotating body with a predetermined size and/or shape; the first position is one or more selected positions distributed on the lower part of the rotating body, and the second position is one or more selected positions distributed on the upper part of the rotating body; the membrane preparation liquid comprises a nano material dispersion liquid.
2. The method according to claim 1, comprising in particular:
a first step comprising: contacting a selected area on the surface of the rotating body with a first film-forming liquid when the selected area rotates to a first position, enabling the first film-forming liquid to adhere to the selected area and form a first liquid film, and then enabling the first liquid film to continuously rotate from the first position to a second position along with the selected area to form a first film material layer; and
a second step comprising: making the selected area of the surface of the rotating body contact with a second membrane-forming solution when continuously rotating from the second position to the first position, and making the second membrane-forming solution adhere to the first membrane material layer of the selected area to form a second liquid membrane, and then making the second liquid membrane form a second membrane material layer covering or laid on the first membrane material layer when continuously rotating from the first position to the second position along with the selected area;
the first membrane-forming solution and the second membrane-forming solution are the same or different.
3. The method of claim 2, further comprising: repeating the first and second steps one or more times to form a composite film having a multi-layer structure on the surface of the rotating body.
4. The method of claim 2, wherein: and at least one chemical property or physical property of the first membrane-forming solution and the second membrane-forming solution is different.
5. The method of claim 4, wherein: the first membrane-forming liquid has at least one component different in kind and/or content from the second membrane-forming liquid.
6. The method of claim 1, wherein: any local area with a specified size and/or shape on the surface of the rotator can be contacted with the film-forming liquid when rotating to the first position, the film-forming liquid can be attached to and form a liquid film in any local area with a specified size and/or shape, and the liquid film can form a corresponding film material when rotating from the first position to the second position along with any local area with a specified size and/or shape.
7. The method of claim 1, further comprising: the thickness and/or the order of the membrane material are adjusted and controlled at least by adjusting the rotating speed of the rotating body and/or the type and/or the content of the membrane forming material in the membrane-forming liquid.
8. The method of claim 1, wherein: the rotating body rotates in a clockwise direction or a counterclockwise direction.
9. The method of claim 1, wherein: a film formation substrate is provided in advance in at least a selected region of the surface of the rotating body, and then the selected region is brought into contact with a film formation liquid, and the film formation liquid is allowed to adhere to the film formation substrate to form a liquid film.
10. The method of claim 1, further comprising: such that the liquid film is at least partially freed of the contained volatile component before or upon rotation of the selected area from the first position to the second position.
11. The method of any one of claims 1 to 10, wherein: the lower partial area of the rotating body is in contact with the liquid surface of the membrane-forming solution or is immersed in the membrane-forming solution when the rotating body rotates, and corresponds to the first position.
12. A method of preparing a film material, comprising:
making a local area at the lower part of a cylinder, which is arranged along the horizontal direction along an axis, contact with the liquid surface of a first membrane-forming liquid in a container or be immersed in the first membrane-forming liquid;
rotating the cylinder in a clockwise or anticlockwise direction, and enabling the first membrane-forming solution to adhere to the surface of the cylinder and form a first liquid membrane;
heating the first liquid film to form a first film material layer when the first liquid film continuously rotates to a film forming station along with the cylinder;
before the first membrane material layer continuously rotates along with the cylinder and is in contact with the liquid surface of a second membrane making solution contained in a container or is immersed in the second membrane making solution, the temperature of the first membrane material layer is adjusted to be the same as that of the second membrane making solution through a temperature adjusting mechanism, and then the first membrane material layer is in contact with the liquid surface of the second membrane making solution or is immersed in the second membrane making solution, so that the second membrane making solution is attached to the first membrane material layer and forms a second liquid membrane;
heating the second liquid film to form a second film material layer when the second liquid film continuously rotates along with the cylinder to the film forming station;
the first membrane making solution and the second membrane making solution are the same or different, and the first membrane making solution and the second membrane making solution comprise nano material dispersion liquid.
13. The method of claim 12, further comprising: firstly, the first liquid film or the second liquid film rotates along with the cylinder to a film pre-forming station and at least part of volatile components contained in the first liquid film or the second liquid film is removed, and then the first liquid film or the second liquid film continuously rotates along with the cylinder to the film forming station.
14. The method of claim 12, comprising: and covering a film-making substrate on the surface of the cylinder in advance, then contacting or immersing a local area at the lower part of the cylinder with the liquid surface of the first film-making solution, and then rotating the cylinder.
15. The method of any one of claims 12-14, further comprising: regulating the thickness and/or order of the membrane material by regulating at least the rotation speed of the cylinder and/or the type and/or content of the membrane forming material in the membrane-forming liquid.
16. The method of claim 12, wherein: the container comprises a liquid tank arranged below the cylinder body, the liquid tank is further connected with a lifting driving mechanism and/or a horizontal driving mechanism, and the lifting driving mechanism and the horizontal driving mechanism are respectively used for driving the liquid tank to move in the vertical direction and the horizontal direction.
17. A membrane material preparation system, comprising:
a rotating body, a partial area of the lower part of which is in contact with or immersed in a film-forming solution, wherein the film-forming solution can adhere to the surface of the rotating body and form a liquid film when the rotating body rotates, the rotating body comprises a cylinder body which can rotate around the axis of the rotating body, the axis of the cylinder body is arranged along the horizontal direction, and the film-forming solution comprises a nano-material dispersion liquid;
the film forming device is at least used for enabling the liquid film to form a film material in a heating mode when the liquid film rotates to a film forming station along with the rotating body;
heating means for at least partially removing the volatizable material by heating the liquid film as the liquid film rotates with the rotating body to a pre-filming station, and for at least partially removing the volatizable material by heating the liquid film as the liquid film rotates with the rotating body from the pre-filming station to a filming station to form a film material;
the temperature adjusting mechanism is at least used for adjusting the temperature of the membrane material to be the same as the membrane making solution before the membrane material formed on the surface of the rotating body continuously rotates along with the rotating body and is contacted with the liquid surface of the membrane making solution or is immersed in the membrane making solution;
wherein, the film pre-forming station and the film forming station are distributed on the upper part of the rotary body.
18. The manufacturing system of claim 17, wherein: the distance between the heating device and the surface of the rotating body is adjustable.
19. The manufacturing system of claim 17, wherein: the film forming device is also connected with a lifting driving mechanism and/or a horizontal driving mechanism, and the lifting driving mechanism and the horizontal driving mechanism are respectively used for driving the film forming device to move along the vertical direction and the horizontal direction.
20. The manufacturing system of claim 17, wherein: the temperature adjusting mechanism comprises a liquid cooling mechanism arranged in the rotating body and/or an air cooling mechanism arranged inside and/or outside the rotating body.
21. The manufacturing system of claim 17, further comprising: a temperature monitoring mechanism for monitoring at least a temperature of the surface of the rotating body.
22. The manufacturing system of claim 17, wherein: the rotating body is connected with a rotary driving mechanism, and the rotary driving mechanism is used for driving the rotating body to rotate; and/or the rotating body is also connected with a translation driving mechanism and/or a lifting driving mechanism, and the translation driving mechanism and the lifting driving mechanism are respectively used for driving the rotating body to move along the horizontal direction and the vertical direction.
23. The manufacturing system of claim 17, wherein: the surface of the rotating body is smooth.
24. The production system according to claim 17, further comprising a control unit connected to at least the driving mechanism of the rotating body and the film forming device.
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Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3372363B2 (en) * | 1994-08-31 | 2003-02-04 | 三菱重工業株式会社 | Belt surface cleaning device in belt cast film forming machine |
| US5558740A (en) * | 1995-05-19 | 1996-09-24 | Reflexite Corporation | Method and apparatus for producing seamless retroreflective sheeting |
| JPH0985757A (en) * | 1995-09-20 | 1997-03-31 | Toray Ind Inc | Thermoplastic resin film and its manufacture |
| EP1320452B1 (en) * | 2000-09-24 | 2007-12-05 | 3M Innovative Properties Company | Extrusion method and apparatus for manufacturing microporous film |
| US6709699B2 (en) * | 2000-09-27 | 2004-03-23 | Kabushiki Kaisha Toshiba | Film-forming method, film-forming apparatus and liquid film drying apparatus |
| JP4088128B2 (en) * | 2002-09-10 | 2008-05-21 | 富士フイルム株式会社 | Solution casting method |
| JP4390247B2 (en) * | 2003-04-25 | 2009-12-24 | 富士フイルム株式会社 | Solution casting method |
| JP2005111816A (en) * | 2003-10-08 | 2005-04-28 | Fuji Photo Film Co Ltd | Solution film forming method and polymer film |
| CN101168296A (en) * | 2006-10-27 | 2008-04-30 | 北京化工大学 | Preparation of polyvinyl fluoride thin film by solution casting method |
| CN101249701B (en) * | 2008-04-14 | 2010-09-08 | 李清让 | Equipment for producing polyvinyl alcohol film by roller process |
| JP2011104889A (en) * | 2009-11-18 | 2011-06-02 | Sumitomo Chemical Co Ltd | Method of producing protective coating of roll mold for manufacturing optical film |
| TWI382914B (en) * | 2010-05-21 | 2013-01-21 | Univ Nat Cheng Kung | Method for manufacture of roller printing molds |
| CN102555130A (en) * | 2010-12-17 | 2012-07-11 | 中国科学院理化技术研究所 | Method for manufacturing polymer films in rotary container film-forming mode |
| CN103492948B (en) * | 2011-08-04 | 2016-06-08 | 株式会社Lg化学 | Light-sensitive compound and comprise its photosensitive resin composition |
| KR20140042652A (en) * | 2012-09-28 | 2014-04-07 | 후지필름 가부시키가이샤 | Solution film-forming method |
| CN105247390B (en) * | 2013-03-28 | 2018-01-09 | 三菱化学株式会社 | The manufacture method of optical film, optical film, the manufacture device of planar luminous body and optical film |
| CN203344238U (en) * | 2013-06-24 | 2013-12-18 | 深圳中兴创新材料技术有限公司 | Cooling system for sheet casting of battery diaphragm and battery diaphragm sheet-casting equipment |
| CN103485074A (en) * | 2013-08-09 | 2014-01-01 | 天津工业大学 | Device and method of preparing electrostatic spinning polymer/inorganic particle nano-composite film |
| US10338283B2 (en) * | 2015-02-05 | 2019-07-02 | Hangzhou Chinastars Reflective Material Co., Ltd. | Composite glue coating device and preparation method for fancy reflective material using the same |
| CN104722211B (en) * | 2015-02-14 | 2016-10-19 | 北京工业大学 | The automatic rolling process of a kind of prior-alcohol-permeacomposite composite membrane and device |
| US11724234B2 (en) * | 2016-08-31 | 2023-08-15 | South Dakota Board Of Regents | Multilayer thin film nanocomposite membranes prepared by molecular layer-by-layer assembly |
| CN108568926B (en) * | 2017-11-21 | 2020-05-15 | 中国科学院金属研究所 | Method for efficiently preparing highly-oriented and highly-compact two-dimensional material film |
| CN108404680A (en) * | 2018-03-09 | 2018-08-17 | 西部宝德科技股份有限公司 | A kind of inorganic-organic composite membrane and preparation method thereof |
| CN109177010A (en) * | 2018-10-10 | 2019-01-11 | 深圳烯材科技有限公司 | A kind of rotary spraying membrane equipment |
| CN110394933A (en) * | 2019-07-17 | 2019-11-01 | 中国科学院金属研究所 | It is a kind of for be centrifuged film film forming liquid injection device |
| CN110624789A (en) * | 2019-09-03 | 2019-12-31 | 大连理工大学 | Method for preparing large-area film by inversion type sticking coating method |
| CN111040222A (en) * | 2019-12-19 | 2020-04-21 | 中国科学院金属研究所 | Preparation method of graphene electromagnetic shielding film |
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