A continuous processing device for a conductive polyaniline coating on a substrate surface

Abstract

The utility model belongs to conductive material technical field discloses a kind of substrate surface conductive polyaniline coating continuous processing device, for processing conductive polyaniline coating to substrate surface, comprising: DBD plasma processor, including plasma power supply, plasma power supply output end is connected with discharge electrode, plasma power supply ground end is connected with ground electrode, ground electrode and discharge electrode are placed in parallel, and gap for substrate passing is left between ground electrode and discharge electrode, DBD plasma processor is used to carry out hydrophilization and roughening treatment to substrate surface;Liquid storage system, liquid storage system includes three liquid storage tanks, three liquid storage tanks are respectively filled with aniline monomer solution, doped acid solution and oxidizing agent solution;The problems existing in the prior art that the preparation process is complex, the coating uniformity and the conductivity are not good are solved, the processing efficiency and the quality of the conductive polyaniline coating are effectively improved, and the continuous production of environmental protection and controllable morphology is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of conductive materials technology, and specifically relates to a continuous processing device for conductive polyaniline coating on substrate surface. Background Technology

[0002] In the rapid development of modern technology, conductive materials have been widely used in many fields due to their unique properties. Conductive fibers and their fabrics, due to their excellent electrical conductivity, thermal conductivity, shielding, and electromagnetic wave absorption functions, are widely used in electronics, power, medical, aviation, aerospace, and other industries. Conductive materials can generally be classified into metallic conductive materials, carbon black conductive materials, conductive polymer materials, and composite conductive materials. Among them, conductive polymer fibers or fabrics mainly come in two types: one is conductive polymer fibers and fabrics made by direct spinning of conductive polymers such as polyacetylene, polyaniline, polypyrrole, and polythiophene; the other is conductive polymer fibers or fabrics obtained by surface modification of ordinary non-conductive chemical fibers or their fabrics. Since directly using conductive polymer materials to prepare conductive polymer fibers or their fabrics has disadvantages such as difficulty in spinning and high cost, modifying ordinary chemical fibers is currently one of the main methods to obtain conductive polymer fibers or fabrics.

[0003] Existing technologies generally employ liquid-phase methods to modify the surface of ordinary fibers or their fabrics with conductive polymers to form a conductive coating, thereby preparing conductive fibers or their fabrics. Taking conductive fibers with polyaniline as the conductive coating as an example, the preparation method is as follows: ordinary fibers are impregnated in an acidic aniline medium containing a swelling agent and a copper ion catalyst, followed by impregnation in an oxidizing agent solution and polymerization to obtain conductive fibers. For chemical fibers that are difficult to modify, such as polyester and acrylic fibers, this method not only consumes a large amount of reagents and generates a large amount of wastewater, but also results in uneven aniline deposition and inconsistent polyaniline particle size and morphology in the coating, leading to unsatisfactory coating adhesion and conductivity. Therefore, existing technologies suffer from problems such as complex preparation processes, poor coating uniformity, and unsatisfactory conductivity. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a continuous processing device for conductive polyaniline coating on substrate surfaces, which solves the problems of complex preparation processes, poor coating uniformity, and poor conductivity in existing technologies.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A continuous processing apparatus for a conductive polyaniline coating on a substrate surface, used to process a conductive polyaniline coating on the surface of a substrate, comprising:

[0007] The DBD plasma processor includes a plasma power supply, a discharge electrode connected to the output terminal of the plasma power supply, and a ground electrode connected to the ground terminal of the plasma power supply. The ground electrode and the discharge electrode are placed in parallel, and a gap is left between the ground electrode and the discharge electrode for the substrate to pass through. The DBD plasma processor is used to perform hydrophilization and roughening treatment on the surface of the substrate.

[0008] The liquid storage system includes three liquid storage tanks, which contain aniline monomer solution, doped acid solution and oxidant solution respectively. Each liquid storage tank is connected to a delivery pipe, and each delivery pipe is equipped with a flow controller. The flow controller is used to pump and precisely control the feed rate of the corresponding solution.

[0009] The spraying mechanism is connected to three delivery pipes and is used to spray a mixture of three solutions.

[0010] The conveying mechanism is used to move the substrate, allowing it to pass between the discharge electrode and the ground electrode, and to be conveyed directly below the spraying mechanism.

[0011] A dielectric plate is placed between the grounding electrode and the discharge electrode, and the dielectric plate is fixed on the grounding electrode or the discharge electrode.

[0012] The conveying mechanism includes pulleys, a transmission belt, and a drive motor;

[0013] The number of pulleys must be at least two;

[0014] The transmission belt is fitted between multiple pulleys and is in the form of a closed loop. The discharge electrode and the grounding electrode are located on the inner and outer sides of the belt loop, respectively. The transmission belt is used to transport the substrate through the discharge electrode and the grounding electrode.

[0015] The output shaft of the drive motor is fixed coaxially with any pulley, and the drive motor is used to drive the pulley to rotate.

[0016] The spraying mechanism includes a nozzle and a flow channel control unit. The end of the delivery pipe away from the liquid storage tank is connected to the flow channel control unit. The nozzle is installed on the flow channel control unit and is used to spray the mixed solution in the flow channel control unit onto the upper surface of the substrate on the delivery mechanism.

[0017] The flow control unit is a four-way assembly, with three delivery pipes connected to the three inlets of the four-way assembly, and the outlet of the four-way assembly connected to the nozzle.

[0018] Flow controllers include any of the following: metering pumps, syringe pumps, or fluid pumps.

[0019] The substrate may include yarn, fabric, film, glass or ceramic sheet.

[0020] Oxidizing agents include ammonium persulfate;

[0021] Doped acids include inorganic acids and organic acids;

[0022] Inorganic acids include any one of hydrochloric acid, nitric acid, or sulfuric acid;

[0023] Organic acids include any one of benzenesulfonic acid, malonic acid, or glycine.

[0024] The beneficial effects of this utility model are:

[0025] This invention achieves hydrophilization and roughening treatment of the substrate surface by setting up a DBD plasma processor and a liquid storage system, and coordinating with a spraying mechanism and a conveying mechanism. The hydrophilization treatment makes the substrate surface easier to adsorb and wet the solution, while the roughening treatment increases the specific surface area and mechanical adhesion of the substrate surface. The combined effect of these two factors significantly improves the activity of the substrate surface, promotes the adsorption and polymerization reaction of aniline monomers, and thus achieves the preparation of a uniform polyaniline coating.

[0026] Simultaneously, the three solutions are independently placed in three different storage tanks, and the three solutions only mix within the common inlet flow control section, which effectively improves the stability of solution storage. The feed rates of the aniline monomer solution, doped acid solution, and oxidant solution are precisely controlled by a flow controller, and then the mixed solution is sprayed onto the substrate surface by a spraying mechanism. This design can achieve uniform preparation of conductive polyaniline coatings with the desired morphology and structural characteristics at room temperature, while avoiding the defects of complex temperature control in traditional methods. It also solves the problems of high raw material consumption, waste due to excess, and large amounts of synthetic wastewater generated in traditional preparation processes. This significantly improves the adhesion and conductivity of the coating, reduces production costs, and solves the problems of complex preparation processes, poor coating uniformity, and poor conductivity in existing technologies. It effectively improves the processing efficiency and quality of conductive polyaniline coatings, and ensures environmentally friendly and morphology-controllable continuous production, demonstrating significant economic benefits and broad application prospects. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the conductive polyaniline coating continuous processing device of this utility model;

[0029] Figure 2 This is a SEM image of the surface of a polyaniline conductive coating prepared by a traditional liquid-phase method;

[0030] Figure 3 This is a SEM image of the surface of the polyaniline conductive coating prepared with benzenesulfonic acid according to this invention;

[0031] Figure 4 This is a SEM image of the surface of the polyaniline conductive coating prepared with malonic acid according to this invention.

[0032] Figure 5 This is a SEM image of the surface of the polyaniline conductive coating prepared using glycine according to this invention;

[0033] Figure 6 This is a SEM image of the unmodified yarn surface in Experiment 3 of this utility model;

[0034] Figure 7 This is a SEM image of the modified yarn surface in Experiment 3 of this utility model. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figures 1 to 7 As shown, a continuous processing apparatus for a conductive polyaniline coating on a substrate surface is used to process a conductive polyaniline coating on the surface of a substrate 4, comprising:

[0037] The DBD plasma processor includes a plasma power supply 1, a discharge electrode plate 2 connected to the output end of the plasma power supply 1, a ground electrode plate 5 connected to the ground end of the plasma power supply 1, the ground electrode plate 5 and the discharge electrode plate 2 are placed in parallel, and a gap is left between the ground electrode plate 5 and the discharge electrode plate 2 for the substrate 4 to pass through. The DBD plasma processor is used to perform hydrophilization and roughening treatment on the surface of the substrate 4.

[0038] The liquid storage system includes three liquid storage tanks 8, which contain aniline monomer solution, doped acid solution and oxidant solution respectively. Each liquid storage tank 8 is connected to a delivery pipe 9, and each delivery pipe 9 is equipped with a flow controller 10. The flow controller 10 is used to pump and precisely control the feed rate of the corresponding solution.

[0039] The spraying mechanism is connected to three delivery pipes 9. The spraying mechanism is used to spray a mixture of three solutions.

[0040] The conveying mechanism is used to move the substrate 4 so that the substrate 4 passes between the discharge electrode plate 2 and the ground electrode plate 5 and is conveyed to the area directly below the spraying mechanism.

[0041] When the DBD plasma processor is working, by applying voltage to the grounding electrode plate 5 and the discharge electrode plate 2, the gas (usually air) is ionized, generating a large number of active particles, including free electrons, ions, free radicals, and ultraviolet light. A large number of active oxygen free radicals (such as -OH, -O, etc.) and ozone (O3) can react with the organic matter on the surface of the substrate 4 to generate hydrophilic functional groups, such as hydroxyl (-OH) and carboxyl (-COOH). These functional groups can significantly improve the hydrophilicity of the substrate 4 surface. Furthermore, the ions and free electrons in the plasma can attach to the surface of the substrate 4 to form a charge distribution. These charges can attract polar water molecules through electrostatic interaction, thereby further improving the hydrophilicity of the substrate 4 surface. The high-energy particles generated by the DBD plasma processor can also break the chemical bonds on the surface of the substrate 4 to form new active sites. These sites can further interact with water molecules, increasing the surface hydrophilicity.

[0042] Meanwhile, the high-energy electrons, ions and free radicals generated in the DBD plasma processor can bombard the surface of the substrate 4, resulting in the physical removal of surface materials; this physical etching effect can roughen the surface of the substrate 4 and increase the specific surface area of ​​the surface; and the impact of high-energy particles can also form micropores or microcracks on the surface of the substrate 4, further increasing the surface roughness; thus realizing the hydrophilicization and roughening treatment of the surface of the substrate 4 by the DBD plasma processor.

[0043] The hydrophilic treatment makes the surface of substrate 4 more susceptible to adsorption and wetting of the solution, while the roughening treatment increases the specific surface area and mechanical adhesion of the surface of substrate 4. The combined effect of these two factors significantly improves the activity of the surface of substrate 4, promotes the adsorption and polymerization reaction of aniline monomers, and thus achieves the preparation of a uniform polyaniline coating.

[0044] When the treated substrate 4 enters the spraying area via the conveying mechanism, the aniline monomer solution, doped acid solution, and oxidant solution in the storage system are pumped and precisely mixed by the flow controller 10, and then uniformly sprayed onto the surface of the substrate 4 by the spraying mechanism. This spraying process not only achieves precise quantitative mixing of the three solutions, but also achieves precise control of the thickness, uniformity, and microstructure of the polyaniline coating by controlling the spraying rate. Furthermore, since the spraying method directly applies the mixed solution to the surface of the substrate 4, it avoids the problem of uneven coating caused by uneven solution concentration in the traditional immersion method, thereby significantly improving the conductivity and adhesion of the coating.

[0045] The entire reaction process can be carried out at room temperature without the need for a complex temperature control system. This not only simplifies the operation process and reduces equipment costs and energy consumption, but also avoids uneven reaction or side reactions caused by improper temperature control in traditional chemical oxidation polymerization. In addition, the application of the spraying method reduces reagent waste, and no wastewater or waste gas is generated during the reaction process, which meets the environmental protection requirements of green production and effectively solves the environmental pollution problems existing in traditional wet synthesis processes.

[0046] This invention, by incorporating a DBD plasma processor and a liquid storage system, along with a spraying and conveying mechanism, achieves hydrophilication and roughening treatment of the substrate surface 4. Simultaneously, it precisely controls the feed rate and mixing spraying of the aniline monomer solution, doped acid solution, and oxidant solution. This innovative design enables uniform preparation of conductive polyaniline coatings at room temperature, avoiding the complex temperature control and wastewater / exhaust gas emissions problems of traditional methods. It significantly improves coating adhesion and conductivity, reduces production costs, effectively enhances the processing efficiency and quality of conductive polyaniline coatings, and ensures environmentally friendly and morphology-controllable continuous production, demonstrating significant economic benefits and broad application prospects.

[0047] It should be noted that the concentration of the solution and the type of doped acid in the three storage tanks can be adjusted according to the actual required area of ​​the substrate to be coated and the actual required morphology and structure.

[0048] A dielectric plate 3 is provided between the grounding electrode plate 5 and the discharge electrode plate 2, and the dielectric plate 3 is fixed on the grounding electrode plate 5 or the discharge electrode plate 2.

[0049] Preferably, the dielectric plate 3 can be a quartz plate made of quartz material.

[0050] The conveying mechanism includes pulleys 7, a transmission belt 6, and a drive motor;

[0051] The number of pulleys 7 is at least two;

[0052] The transmission belt 6 is fitted between multiple pulleys 7. The transmission belt 6 is in the form of a closed loop. The discharge electrode plate 2 and the grounding electrode plate 5 are located on the inner and outer sides of the belt loop of the transmission belt 6, respectively. The transmission belt 6 is used to transport the substrate 4 through the gap between the discharge electrode plate 2 and the grounding electrode plate 5.

[0053] The output shaft of the drive motor is fixed coaxially with any pulley 7, and the drive motor is used to drive the pulley 7 to rotate.

[0054] Preferably, the conveying mechanism further includes a support frame, with the pulley 7 rotatably connected to the support frame, and the drive motor fixed to the support frame via a mounting base;

[0055] It should be noted that after setting up the conveying mechanism and dielectric plate 3, the size of the remaining gap between the grounding electrode plate 5 and the discharge electrode plate 2 for the substrate 4 to pass through is controlled at a height of 3-5mm.

[0056] The spraying mechanism includes a nozzle 11 and a flow channel control unit 12. The end of the delivery pipe 9 away from the liquid storage tank 8 is connected to the flow channel control unit 12. The nozzle 11 is installed on the flow channel control unit 12 and is used to spray the mixed solution in the flow channel control unit 12 onto the upper surface of the substrate 4 on the delivery mechanism.

[0057] By cooperating with the flow channel control unit 12 and the delivery pipe 9, not only can the three solutions be mixed during the spraying process, but the three solutions are also placed independently in three different storage tanks 8. The three solutions only mix when they enter the flow channel control unit 12 together, which can effectively improve the stability of solution storage.

[0058] The flow control unit 12 is a four-way assembly, with three delivery pipes 9 connected to the three inlets of the four-way assembly respectively, and the outlet of the four-way assembly connected to the nozzle 11.

[0059] Preferably, the four-way assembly can be a four-way valve with three inlets and one outlet;

[0060] The four-way valve can effectively mix three solutions and has the advantages of simple structure and space saving.

[0061] The flow controller 10 includes any one of a metering pump, a syringe pump, or a fluid pump;

[0062] Preferably, a precision metering pump can be used in this application to achieve precise control of the pumping volume of the solution while pumping the solution, thereby effectively controlling the pumping feed rate.

[0063] Preferably, the feed rate is controlled at 3-10 mL / min.

[0064] Substrate 4 includes yarn, fabric, film, glass, or ceramic sheet;

[0065] For soft substrates such as yarns, fabrics, films, or nonwoven materials, the DBD plasma processor typically processes them for 30-60 seconds.

[0066] For rigid substrates such as glass or ceramic sheets, the DBD plasma processor typically processes them for several minutes.

[0067] Based on the characteristics of the substrate 4 to be treated (such as fabric, non-woven material, film, etc.) (such as porosity, basis weight, thickness, etc.), the amount of polyaniline coating on the substrate 4 is adjusted by precisely controlling the spraying rate and spraying time of the spraying equipment, so that the loading rate of the polyaniline coating (i.e. the percentage of coating mass to the total mass of substrate 4) reaches the required range (1-10wt%).

[0068] Oxidizing agents include ammonium persulfate;

[0069] Doped acids include inorganic acids and organic acids;

[0070] Inorganic acids include any one of hydrochloric acid, nitric acid, or sulfuric acid;

[0071] Organic acids include any one of benzenesulfonic acid, malonic acid, or glycine;

[0072] The preferred doping acid in this application is an inorganic acid. Among organic acids, hydrochloric acid, nitric acid, and sulfuric acid are strong acids that readily ionize in water to generate hydrogen ions for polyaniline doping. However, organic acids such as benzenesulfonic acid, malonic acid, or glycine are weak acids with weak hydrogen ion ionization capabilities. Therefore, the degree of polyaniline doping is weaker than that of strong acids, and the conductivity of polyaniline is also relatively weaker. Furthermore, the strength of ionization capability will affect the morphology of polyaniline nanoparticles during the doping process.

[0073] A continuous processing method for a conductive polyaniline coating on a substrate surface, comprising the following steps: The method uses the aforementioned continuous processing device for conductive polyaniline coating on a substrate 4 to spray a conductive polyaniline coating onto the substrate surface.

[0074] Place the substrate 4 to be processed onto the conveying mechanism;

[0075] The substrate 4 is conveyed by a conveying mechanism to the space between the discharge electrode plate 2 and the grounding electrode plate 5 of the DBD plasma processor.

[0076] The surface of substrate 4 was hydrophilized and roughened using a DBD plasma processor;

[0077] The substrate 4, after being processed by the DBD plasma processor, is conveyed by a conveying mechanism to the area directly below the spraying mechanism.

[0078] Based on the intrinsic properties of the substrate 4 to be treated, the feed rates of the aniline monomer solution, the doped acid solution, and the oxidant solution are precisely controlled by the flow controller 10.

[0079] The mixture of the three solutions is sprayed onto the surface of the substrate 4 using a spraying mechanism;

[0080] The microstructure characteristics of the polyaniline coating can be controlled by selecting the type of doped acid solution.

[0081] The coated substrate 4 is removed from the conveying mechanism, and a new substrate 4 to be processed is placed at the end of the conveying mechanism near the DBD plasma processor.

[0082] Repeat the above steps to achieve continuous processing of the conductive polyaniline coating on the surface of substrate 4.

[0083] The intrinsic characteristics of substrate 4 include its porosity, basis weight, and thickness.

[0084] When the porosity, basis weight, and thickness are different, the amount of oxidant, doped acid, and aniline monomer that can be adsorbed will also be different. Therefore, it is necessary to adjust the appropriate rate according to different substrates to save costs while ensuring conductivity.

[0085] The following experiments were conducted in this application to verify the method;

[0086] Experiment 1: Comparison between traditional liquid phase method and this method;

[0087] Using filter membrane as substrate and ammonium persulfate as oxidant, the surface of filter membrane is modified with polyaniline coating by both traditional liquid phase method and this method.

[0088] In the experiment, benzenesulfonic acid was selected as the doping acid, ammonium persulfate was selected as the oxidant, and the concentrations of the aniline monomer solution, the doping acid solution and the oxidant solution were all set to 0.5 mol / L.

[0089] When using traditional liquid-phase chemical synthesis methods to prepare conductive polyaniline coatings, the reaction temperature is usually controlled at 0°C and the reaction time is usually 12 hours; however, this method can achieve the formation of conductive polyaniline coatings at room temperature in 2 hours.

[0090] The microstructure of the coating was observed using scanning electron microscopy (SEM), and the resistivity of the filter membrane surface was measured to evaluate its conductivity. The microstructures obtained by the traditional liquid-phase method and this method in preparing the polyaniline conductive coating are as follows: Figure 2 , Figure 3 As shown;

[0091] The resistivity of the filter membrane surface after modification using two methods is shown in the table below:

[0092] Table 1. Surface resistivity (kΩ) of polymer filter membranes with polyaniline coatings modified by two methods.

[0093]

[0094] The results showed that the filter membrane coating prepared by the traditional method had an uneven microstructure with various morphologies and uneven distribution, which limited the conductivity and resulted in high resistivity. In contrast, the filter membrane coating prepared by the present method had a uniform morphology, was granular, and was evenly distributed, which significantly improved the conductivity and reduced the resistivity. At the same time, it avoided the generation of wastewater and waste gas, demonstrating the advantages of the present method in preparing high-quality conductive filter membranes.

[0095] Experiment 2: Comparison of results using different doped acids in this method;

[0096] Using a filter membrane as the substrate and ammonium persulfate as the oxidant, with the concentrations of the aniline monomer solution, the doped acid solution, and the oxidant solution all at 0.5 mol / L, this method is used to process the filter membrane into a conductive polyaniline coating.

[0097] When the doping acid is benzenesulfonic acid, the resulting polyaniline coating has a nanoparticle morphology and is very uniform. Figure 3 As shown;

[0098] When malonic acid is used as the doping acid, the resulting polyaniline exhibits a nanoparticle microstructure and a relatively uniform coating, but its density is not as high as that of coatings processed with benzenesulfonic acid. Figure 4 As shown;

[0099] When the doping acid is glycine, the resulting polyaniline microstructure is mainly rod-shaped and network-like, and the modified substrate surface turns emerald green. Figure 5 As shown;

[0100] The surface resistivity of the filter membrane after processing conductive polyaniline coatings with three different doped acids is shown in the table below:

[0101] Table 2. Surface resistivity (kΩ) of polymer filter membranes with three acid-doped conductive polyaniline coatings.

[0102]

[0103] As can be seen from the table, the coating doped with benzenesulfonic acid has the lowest resistivity and exhibits excellent conductivity; the coating doped with malonic acid has good conductivity; while the coating doped with glycine has a relatively high resistivity.

[0104] Experiment 3: Preparation of conductive polyaniline-coated modified synthetic fiber yarns;

[0105] This experiment used polyester yarn as the substrate and hydrochloric acid as the doping acid to prepare a conductive polyaniline coating on its surface using this method. In the experiment, the concentrations of aniline monomer, doping acid, and oxidant were all set to 0.1 mol / L. Before modifying the polyaniline, the polyester yarn was subjected to a 30V, 120s DBD plasma processor.

[0106] SEM images show that the surface of untreated polyester fibers is smooth (as shown in the image). Figure 6 As shown), after treatment by this method, a uniform nanoparticle polyaniline coating is formed on the fiber surface (as shown). Figure 7 (as shown);

[0107] The volume resistivity of the polyester yarn was measured, and the results are shown in the table below:

[0108] Table 3. Volume resistivity (MΩ·cm) of conductive polyaniline-modified polyester yarn

[0109]

[0110] As shown in the table above, the modification significantly improved the conductivity of the yarn. This result indicates that the method, combined with plasma pretreatment, can effectively improve the surface properties of chemical fiber yarns and achieve the preparation of a uniform conductive polyaniline coating, providing an efficient and environmentally friendly new approach for the functional modification of chemical fiber materials.

[0111] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0112] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. A continuous processing apparatus for a conductive polyaniline coating on a substrate surface, used to process a conductive polyaniline coating on the surface of a substrate (4), characterized in that, include: The DBD plasma processor includes a plasma power supply (1), a discharge electrode plate (2) connected to the output end of the plasma power supply (1), a ground electrode plate (5) connected to the ground end of the plasma power supply (1), the ground electrode plate (5) and the discharge electrode plate (2) are placed in parallel, and a gap is left between the ground electrode plate (5) and the discharge electrode plate (2) for the substrate (4) to pass through. The DBD plasma processor is used to perform hydrophilization and roughening treatment on the surface of the substrate (4). The liquid storage system includes three liquid storage tanks (8), each containing an aniline monomer solution, a doped acid solution, and an oxidant solution. Each liquid storage tank (8) is connected to a delivery pipe (9), and each delivery pipe (9) is equipped with a flow controller (10). The flow controller (10) is used to pump and precisely control the feed rate of the corresponding solution. The spraying mechanism is connected to three delivery pipes (9). The spraying mechanism is used to spray a mixture of three solutions. The conveying mechanism is used to move the substrate (4) so ​​that the substrate (4) passes between the discharge electrode plate (2) and the ground electrode plate (5) and is conveyed to the area directly below the spraying mechanism.

2. The continuous processing apparatus for conductive polyaniline coating on substrate surface according to claim 1, characterized in that, A dielectric plate (3) is provided between the grounding electrode plate (5) and the discharge electrode plate (2), and the dielectric plate (3) is fixed on the grounding electrode plate (5) or the discharge electrode plate (2).

3. The continuous processing apparatus for conductive polyaniline coating on substrate surface according to claim 2, characterized in that, The conveying mechanism includes pulleys (7), a transmission belt (6), and a drive motor; The number of pulleys (7) is at least two; The transmission belt (6) is sleeved between multiple pulleys (7). The transmission belt (6) is in a closed loop shape. The discharge electrode plate (2) and the ground electrode plate (5) are located on the inner and outer sides of the belt loop of the transmission belt (6), respectively. The transmission belt (6) is used to transport the substrate (4) through the discharge electrode plate (2) and the ground electrode plate (5). The output shaft of the drive motor is fixed coaxially with any pulley (7), and the drive motor is used to drive the pulley (7) to rotate.

4. The continuous processing apparatus for conductive polyaniline coating on substrate surface according to claim 3, characterized in that, The spraying mechanism includes a nozzle (11) and a flow channel control unit (12). The end of the delivery pipe (9) away from the liquid storage tank (8) is connected to the flow channel control unit (12). The nozzle (11) is installed on the flow channel control unit (12) and is used to spray the mixed solution in the flow channel control unit (12) onto the upper surface of the substrate (4) on the delivery mechanism.

5. The continuous processing apparatus for conductive polyaniline coating on substrate surface according to claim 4, characterized in that, The flow control unit (12) is a four-way assembly. The three delivery pipes (9) are connected to the three inlets of the four-way assembly respectively, and the outlet of the four-way assembly is connected to the nozzle (11).

6. The continuous processing apparatus for conductive polyaniline coating on substrate surface according to claim 5, characterized in that, The flow controller (10) includes any one of a metering pump, a syringe pump, or a fluid pump.

7. The continuous processing apparatus for conductive polyaniline coating on substrate surface according to claim 6, characterized in that, The substrate (4) includes yarn, fabric, film, glass or ceramic sheet.

8. The continuous processing apparatus for conductive polyaniline coating on substrate surface according to claim 7, characterized in that, Oxidizing agents include ammonium persulfate; Doped acids include inorganic acids and organic acids; Inorganic acids include any one of hydrochloric acid, nitric acid, or sulfuric acid; Organic acids include any one of benzenesulfonic acid, malonic acid, or glycine.

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