CN212801022U

CN212801022U - Conductive paper preparation equipment

Info

Publication number: CN212801022U
Application number: CN202021376390.XU
Authority: CN
Inventors: 王慧慧
Original assignee: Weiyuan Material Technology Liaoning Co ltd
Current assignee: Anji Yuangeng Technology Co ltd
Priority date: 2020-05-06
Filing date: 2020-07-14
Publication date: 2021-03-26
Anticipated expiration: 2030-07-14
Also published as: CN111809447A; CN111809447B

Abstract

The application discloses electrically conductive paper preparation equipment, this equipment is used for scribbling water-soluble polymer conductive paste in paper, includes: the printing device is provided with at least one group of printing wheel sets, the discharging wheel and the receiving wheel rotate in the same direction so that paper passes through the printing wheel sets, and the printing wheel sets are used for coating the water-soluble polymer conductive slurry on the paper; the pre-treatment device is arranged between the feeding wheel and the printing device and is used for releasing water vapor to the paper moving to the printing device from the upper part of the pre-treatment device so as to open hydrogen bonds in the paper. Through the technical scheme in this application, carry out the steam heating by preprocessing device to the paper to open the hydrogen bond in the paper, make conductive paper by printing device with water-soluble conductive material coating on the paper again, when guaranteeing paper intensity, make the hydrogen bond in water-soluble conductive material and the paper combine together, avoid conductive paper's coating to drop.

Description

Conductive paper preparation equipment

Technical Field

The application relates to the technical field of conductive paper preparation, in particular to conductive paper preparation equipment.

Background

With the development of science and technology and the progress of society, the conductive paper is increasingly paid more attention by people, and the conductive paper has special functions of electromagnetic shielding, electromagnetic wave absorption, heat conduction and the like besides the conductivity. The conductive filler in the conductive paper can be classified into three types, namely carbon series, metal series and metal oxide series, wherein the carbon series conductive filler mainly comprises carbon black, graphite, carbon fiber, graphene, carbon nano tube, high-temperature calcined petroleum coke, silicon carbide and the like.

The applicant noticed that the toughness of the paper is better because the preparation process of the paper is that firstly, cellulose raw materials are made into pulp, then, non-cellulose components are removed by various chemicals to prepare paper pulp, then, the paper pulp is pulped to break the shells of the plant cellulose, so that cellulose macromolecules are spread out, and then, the paper is formed by settling, flattening and drying. Because there is a strong attraction between the hydroxyl groups on the cellulose macromolecule long chain called as hydrogen bond, after the cellulose pulp is flapped, the macromolecules are spread and interweaved together by the attraction, so that the paper has a larger toughness.

In the prior art, on one hand, the conductive coating of the conductive paper is made of conductive graphite, carbon nano tubes and other materials, and hydrogen bonds are not easily formed between the conductive coating and cellulose, so that the conductive paper produced by the conventional conductive paper production equipment has the problems that the coating is easy to fall off or the paper is brittle due to forced bonding or high-temperature fusion.

On the other hand, existing conductive paper production equipment also does not have the ability to open paper hydrogen bonds, add conductive coatings to the paper network structure, and form hydrogen bonds.

SUMMERY OF THE UTILITY MODEL

The purpose of this application lies in: reform transform through coating equipment, under the prerequisite of guaranteeing paper intensity, utilize the hydrogen bond in the vapor opens the paper to the hydrogen bond that will open combines together with the electrically conductive thick liquids of water-soluble polymer, forms the electrically conductive paper of integration, drops with the coating of avoiding electrically conductive paper.

The technical scheme of the application is as follows: there is provided an apparatus for preparing a conductive paper for applying a water-soluble polymer conductive paste to a paper, the apparatus including: the device comprises a discharging wheel, a preprocessing device, a printing device and a receiving wheel; the printing device is provided with at least one group of printing wheel sets, the discharging wheel and the receiving wheel rotate in the same direction, so that when paper passes through the printing wheel sets, the printing wheel sets coat the water-soluble polymer conductive slurry on the paper to manufacture conductive paper; the pretreatment device is arranged between the feeding wheel and the printing device, and volatilizes water vapor to the paper moving to the printing wheel set from the upper part of the pretreatment device so as to open hydrogen bonds in the paper.

Among any one of the above-mentioned technical scheme, furtherly, preprocessing device is provided with material platform, and one side that material platform kept away from the blowing wheel is provided with first opening, and preprocessing device still includes: the device comprises a steam generator, an air homogenizing groove and a first roller; the steam generator is arranged below the material platform, the gas homogenizing groove is arranged between the steam generator and the material platform, and water vapor generated by the steam generator is uniformly volatilized to the material platform through the gas homogenizing groove; the two first rollers are arranged in the first notch in parallel up and down, and the two first rollers are used for flattening the paper passing through the upper part of the first notch by first preset pressure.

In any one of the above technical solutions, further, the first roller is uniformly distributed with a first elastic coating, and the first elastic coating is an elastic rubber or elastic polyurethane layer; a first pressure sensor is further arranged between the two first rollers and used for detecting the pressure between the two first rollers.

In any one of the above technical solutions, further, the upper surface of the material platform is provided with a first microporous plate, so that the water vapor can be volatilized.

In any one of the above technical solutions, further, the printing wheel set includes: the device comprises a material groove, a material homogenizing device, a printing wheel and an extrusion wheel; the printing wheel is arranged above the printing device, the extrusion wheel is arranged below the printing device, and the extrusion wheel is opposite to the printing wheel; and a material homogenizer is arranged above the printing wheel, a material groove is arranged on the material homogenizer, and after the water-soluble polymer conductive slurry is injected into the material homogenizer from the material groove, the water-soluble polymer conductive slurry is uniformly distributed on the printing wheel by the material homogenizer so that the printing wheel coats the water-soluble polymer conductive slurry on the paper, wherein the steering direction of the printing wheel is the same as that of the material discharging wheel and is opposite to that of the extrusion wheel, and the extrusion wheel extrudes the paper coated with the water-soluble polymer conductive slurry below the printing wheel at a second preset pressure.

In any one of the above technical solutions, further, the printing wheel set further includes: a second pressure sensor; the second pressure sensor is located on the extrusion wheel and is used for detecting the pressure between the printing wheel and the extrusion wheel.

In any one of the above technical solutions, further, the printing apparatus further includes: a feed pump and a feed delivery pipe; the conveying pipe is connected with the feeding pump and the material tank, and the water-soluble polymer conductive slurry pumped by the feeding pump is conveyed to the material tank through the conveying pipe.

In any one of the above technical solutions, further, the apparatus further includes: a drying device; the drying device is arranged between the printing device and the material receiving wheel and comprises a drying platform, second rollers and a first electric heating element, a second opening is formed in one side, away from the material receiving wheel, of the drying platform, the two second rollers are arranged in the second opening in an up-and-down parallel mode, the first electric heating element is arranged inside at least one second roller, the second rollers are heated by heat generated by the first electric heating element, and the two second rollers flatten the conductive paper passing through the upper portion of the second opening with third preset pressure.

In any one of the above technical solutions, further, second elastic coatings are uniformly distributed on the second roller, and the second elastic coatings are elastic rubber or elastic polyurethane layers; and a third pressure sensor is also arranged between the two second rollers and used for detecting the pressure between the two second rollers.

In any of the above technical solutions, further, a second microporous plate is disposed on the upper surface of the drying platform, a cross wind fan is disposed below the drying platform, and wind blown by the cross wind fan blows over the drying platform through the second microporous plate to dry the conductive paper passing over the second microporous plate; the upper surface of the drying platform is also provided with a second electric heating element which is a heating wire.

The beneficial effect of this application is:

technical scheme in this application, through set up preprocessing device before printing device, carry out the steam heating to the paper, with open the hydrogen bond in the paper, and adjust the delivery pump of the electrically conductive thick liquids of pump income water-soluble polymer to the printing device, including the regulation of flow and pressure, supply the electrically conductive thick liquids of water-soluble polymer to the printing wheel through the evener uniformly, make the electrically conductive paper with the electrically conductive thick liquids coating of water-soluble polymer on the paper by the printing wheel again, make the electrically conductive thick liquids of water-soluble polymer combine together with the hydrogen bond in the paper, when guaranteeing electrically conductive paper intensity, can also avoid the electrically conductive coating of electrically conductive paper to drop effectively, and satisfy the electrically conductive demand of electrically conductive paper, the comprehensive properties of electrically conductive paper has been improved.

This application has still set up drying device, utilizes first electric heating element, cross-wind fan and the second electric heating element in the second roll, heats the stoving to the conductive paper that printing device made, improves the preparation efficiency of conductive paper. This application has still set up corresponding pressure regulation structure in preprocessing device, printing device and drying device, adjusts first roll, printing wheel and second roll, utilizes first roll, second roll to carry out leveling to the paper after vapor pretreatment heating, the paper after the coating respectively, utilizes printing wheel to guarantee that printing device can even coating when coating water-soluble polymer conductive paste on the paper to improve conductive paper's production efficiency and yields.

Drawings

The advantages of the above and/or additional aspects of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic block diagram of an apparatus for making conductive paper according to one embodiment of the present application;

fig. 2 is a schematic illustration of the preparation of conductive paper according to one embodiment of the present application.

Wherein, 1-pretreatment device, 2-printing device, 3-drying device, 11-discharging wheel, 12-steam generator, 121-gas homogenizing groove, 122-first microporous plate, 13-first roller, 131-first elastic coating, 132-first pressure sensor, 141-first display, 142-first speed adjusting system, 143-temperature/steam adjusting system, 21-printing wheel group, 211-material groove, 212-material homogenizing device, 213-printing wheel, 214-extrusion wheel, 215-second pressure sensor, 24-feeding system, 241-feeding pump, 242-feeding pipe, 251-second speed adjusting system, 252-first pressure control system, 253-flow control system, 254-second display, 31-a second roller, 311-a second elastic coating, 312-a first electric heating element, 313-a third pressure sensor, 32-a material receiving wheel, 33-a drying platform, 331-a cross-wind fan, 332-a second microporous plate, 333-a second electric heating element, 341-a third speed adjusting system, 342-a second pressure control system, 343-a temperature/air volume control system and 344-a third display.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

This example illustrates the preparation of a water-soluble polymer conductive paste.

The method comprises the following steps: preparing a water-soluble adhesive, wherein the water-soluble adhesive is provided with hydrogen bond groups and is dissolved in water to form a solution water-soluble polymer; the water soluble binder comprises one or more of carboxymethyl cellulose, starch acetate, carboxymethyl starch, carboxymethyl cellulose, hydroxymethyl cellulose, polyvinylpyrrolidone, hydrolyzed polyacrylamide and polyvinyl alcohol.

Step two: preparing a carbon-based conductive material, wherein the carbon-based conductive material comprises one or more of highly conductive graphite, graphene, carbon nanotubes and conductive carbon black.

Step three: and mixing the carbon-based conductive material and the water-soluble polymer in proportion to obtain corresponding conductive paste, namely the water-soluble polymer conductive paste.

Specifically, 10g of carboxymethyl cellulose was weighed and uniformly mixed in 50g of purified water by a magnetic stirrer to obtain a solution of a water-soluble polymer as a water-soluble adhesive. And heating the obtained solution to 80 ℃, adding 200g of aqueous carbon nanotube conductive slurry of Chengdu organic chemistry Co., Ltd, setting 1400r/min by a magnetic stirrer, uniformly stirring for 2h to obtain the water-soluble polymer conductive slurry, and measuring the viscosity value to be 7000 cps.

The paper in this embodiment may be various kinds of printing paper, copying paper, drawing paper, and the like.

As shown in fig. 1, the present embodiment provides an apparatus for preparing conductive paper, which is used for applying the water-soluble polymer conductive paste prepared according to the above preparation process to paper, and comprises: the discharging wheel 11, the pretreatment device 1, the printing device 2 and the receiving wheel 32;

one end of the printing device 2 is provided with a discharging wheel 11, the other end of the printing device 2 is provided with a receiving wheel 32, the pre-processing device 1 is arranged between the discharging wheel 11 and the printing device 2, the discharging wheel 11 is positioned on the left side of the equipment and is fixed on the pre-processing device 1 through a bracket, the printing device 2 is positioned on the right side of the pre-processing device 1, the receiving wheel 32 positioned on the right side is fixed through a bracket, wherein the discharging wheel 11 and the receiving wheel 32 rotate in the same direction, so that the paper passes through the pre-processing device 1 and the printing device 2 in sequence, the pre-processing device 1 carries out pre-processing heating on the paper by using water vapor, so that hydrogen bonds in the paper are opened, when the pre-processed and heated paper passes through the printing wheel set 21 arranged above the printing device 2, the printing wheel set 21 coats the water-soluble polymer conductive slurry on the paper, so that the water-soluble polymer, the conductive layer is formed on the paper to prepare the conductive paper, so that the coating of the conductive paper is prevented from falling off, and the strength and the comprehensive performance of the conductive paper are improved.

The apparatus for producing the conductive paper in the present embodiment will be described in detail below.

In this embodiment, before the conductive paper is produced, water vapor is volatilized from the pretreatment device 1 toward the paper moving to the printing device 2 via the upper side thereof, so that hydrogen bonds in the paper are opened.

Specifically, the pretreatment device 1 is of a box structure, and a plurality of support frames are arranged in the pretreatment device so as to support each structural unit in the device, and each structural unit cooperates together to realize pretreatment heating of paper. Be fixed with material platform on preprocessing device 1's the support, the constitutional unit among preprocessing device 1 includes: a steam generator 12, a gas homogenizing groove 121 and a first roller 13; the steam generator 12 is fixed below the material platform to provide steam required in the pretreatment heating process, the water content of the paper can be adjusted by adjusting the steam amount and the volatilization amount of the steam generated by the steam generator 12, the gas homogenizing groove 121 is arranged between the steam generator 12 and the material platform, the gas homogenizing groove 121 is fixed by a support frame, and the steam generated by the steam generator 12 is uniformly volatilized to the material platform through the gas homogenizing groove 121, so that the paper is uniformly heated, namely, hydrogen bonds on the paper are uniformly opened.

Because the paper becomes wrinkled after being heated by water vapor, the paper needs to be leveled so as to be coated with the water-soluble polymer conductive paste by the printing device 2 in the following process, and through tests, when the paper is directly flattened by the rollers on the material platform, the situation of uneven stress is easy to exist, therefore, one side of the material platform far away from the material discharge wheel 11 is provided with a first gap, two first rollers 13 are arranged in parallel up and down on the first gap, supporting bearings, motors, transmission devices and the like are also arranged on the supporting frames for fixing the two first rollers 13, the two first rollers 13 flatten the paper passing through the upper part of the first gap with a first preset pressure, the leveling of the paper is completed, wherein the two first rollers 13 are uniformly distributed with first elastic coatings 131 so as to avoid scratching the paper and further ensure the leveling of the paper, the first elastic coating 131 is an elastic rubber or elastic polyurethane layer.

In this embodiment, a corresponding first control system may be further provided on the pretreatment device 1, and includes a first display 141, a first speed adjustment system 142, and a temperature/steam adjustment system 143, the first speed adjustment system 142 adjusts the rotation speed of the two first rollers 13 to match the rotation speed of the emptying wheel 11 and the receiving wheel 32, the temperature/steam adjustment system 143 adjusts the water vapor generation rate and the water vapor amount of the vapor generator 12, and the first display 141 displays the above related parameters, the set first preset pressure, and the actual pressure value between the two first rollers 13.

In order to facilitate detection of an actual pressure value between the two first rollers 13, a first pressure sensor 132 may be disposed between the two first rollers 13, the first pressure sensor 132 is configured to detect a pressure between the two first rollers 13, the pressure between the two first rollers 13 may be adjusted by adjusting an interval between axes of the two first rollers 13, may be manually adjusted, or may be automatically adjusted by providing a corresponding control mechanism, which is not limited in this embodiment.

Further, in order to enable the water vapor generated in the steam generator 12 to be distributed on the material platform more uniformly, a first microporous plate 122 may be further disposed on the upper surface of the material platform of the pretreatment device 1 in this embodiment, the paper moves under the action of the material feeding wheel 11 and the material receiving wheel 32, the water vapor generated by the steam generator 12 is volatilized to the first microporous plate 122 through the gas homogenizing groove 121, and then the water vapor is volatilized to the paper above the first microporous plate 122.

As shown in fig. 2, the printing device 2 is a frame structure, a material recycling tank is arranged below the frame structure, at least one set of printing wheel set 21 is fixed above the material recycling tank through a support, each set of printing wheel set 21 is provided with a matched bearing, a transmission device, a motor and the like, three sets of printing wheel sets 21 are arranged in the embodiment, the three sets of printing wheel sets 21 can be driven by the same motor through the transmission device, and also can be respectively driven by three sets of motors independently, and when three sets of motors are driven independently, the design of the paper surface resistance gradient can be realized.

Each printing wheel set 21 has the same structure, and specifically comprises: a trough 211, a refiner 212, a printing wheel 213, and an extrusion wheel 214; the printing wheel 213 is arranged above the plane of the paper when the printing device 2 coats the water-soluble polymer conductive paste on the paper, the extrusion wheel 214 is arranged below the plane, the extrusion wheel 214 is right opposite to the printing wheel 213, the printing wheel 213 coats the water-soluble polymer conductive paste on the upper surface of the paper, the extrusion wheel 214 extrudes the paper during coating, on one hand, the water-soluble polymer conductive paste is ensured to be fully contacted with the paper, on the other hand, the redundant conductive paste is extruded out of the paper, the finally generated conductive paper is ensured to have consistent paper surface resistance at the same position, and the extruded conductive paste is recovered by the material recovery tank.

When the water-soluble polymer conductive paste is added to the printing wheel 213, in order to ensure the uniformity of the paste addition, a material homogenizer 212 is arranged on the frame above the printing wheel 213, the material homogenizer 212 is in contact with the printing wheel 213, a material groove 211 is arranged on the material homogenizer 212, and after the water-soluble polymer conductive paste is injected into the material homogenizer 212 from the material groove 211, the water-soluble polymer conductive paste is uniformly distributed on the printing wheel 213 by the material homogenizer 212, so that the printing wheel 213 coats the water-soluble polymer conductive paste on paper to manufacture the conductive paper.

When injecting water-soluble polymer conductive paste into silo 211, can add by manual work, also can set up feeding pump 241 and corresponding conveying pipeline 242 and constitute feed system 24, connect feeding pump 241 and silo 211 by conveying pipeline 242, the water-soluble polymer conductive paste that feeding pump 241 pumps passes through conveying pipeline 242 and carries to silo 211, through the flow of adjusting feeding pump 241, can realize the injection volume of water-soluble polymer conductive paste.

It should be noted that, in the paper coating process, the coating direction of the printing wheel 213 is the same as the moving direction of the paper, that is, the turning direction of the printing wheel 213 is the same as the turning direction of the receiving wheel 32, and in order to realize the squeezing of the paste and the paper in the coating process, the turning direction of the squeezing wheel 214 is set to be opposite to the turning direction of the printing wheel 213, and the squeezing wheel 214 is set to squeeze the paper coated with the water-soluble polymer conductive paste below the printing wheel 213 at a second preset pressure.

Further, the printing wheel set 21 further includes: a second pressure sensor 215; the second pressure sensor 215 is located on the extrusion wheel 214, and the second pressure sensor 215 is configured to detect a pressure between the printing wheel 213 and the extrusion wheel 214, where the pressure may be adjusted by adjusting a distance between an axis of the printing wheel 213 and an axis of the extrusion wheel 214, may be manually adjusted, or may be automatically adjusted by providing a corresponding control mechanism, which is not limited in this embodiment.

In this embodiment, a first pressure control system 252 may be further provided to adjust the pumping pressure of the water-soluble polymer conductive paste, and correspondingly, the second control system on the printing device 2 further includes a second speed adjustment system 251, a flow control system 253, and a second display 254. The second speed adjusting system 251 adjusts the rotating speed of the three groups of printing wheel sets 21 to match the rotating speed of the feeding wheel 11, the receiving wheel 32 and the first roller 13; the flow control system 253 adjusts the flow of the feeding pump 241, so as to control the water-soluble polymer conductive slurry in the printing wheel 213; the above-mentioned relevant parameters, as well as the set second preset pressure, the actual pressure value between the printing wheel 213 and the pressing wheel 214, etc., are displayed by the second display 254.

Further, in order to accelerate the forming speed of the prepared conductive paper, the device also comprises: and the drying device 3 is used for drying the conductive paper prepared by the printing device 2. Drying device 3 sets up between printing device 2 and receipts material wheel 32, receives the material wheel 32 and fixes on drying device 3's right side through the support for rotatory good conductive paper of retrieving. The drying device 3 includes a drying platform 33, a second roller 31 and a first electric heating element 312.

In order that the second roller 31 can flatten the conductive paper prepared by the printing device 2 with uniform stress, a second opening is arranged on one side (left side) of the drying platform 33 far away from the material receiving wheel 32, the two second rollers 31 are arranged in parallel up and down in the second opening, a supporting frame for fixing the two second rollers 31 is further provided with a bearing, a motor, a transmission device and the like, the two second rollers 31 flatten the conductive paper passing through the second opening with a third preset pressure, wherein the second rollers 31 are uniformly provided with second elastic coatings 311, and the second elastic coatings 311 are elastic rubber or elastic polyurethane layers to avoid scratching the conductive paper and further ensure the flatness of the conductive paper.

In order to accelerate the volatilization of moisture in the conductive paper, a first electric heating element 312 is arranged inside at least one second roller 31, the second roller 31 is heated by the heat generated by the first electric heating element 312, and the heated second roller 31 is used for flattening the conductive paper to accelerate the forming of the conductive paper.

In order to facilitate detection of an actual pressure value between the two second rollers 31, a third pressure sensor 313 may be further disposed between the two second rollers 31, the third pressure sensor 313 is configured to detect a pressure between the two second rollers 31, the pressure between the two second rollers 31 may be adjusted by adjusting a distance between axes of the two second rollers 31, may be manually adjusted, or may be automatically adjusted by providing a corresponding control mechanism, which is not limited in this embodiment.

Further, in order to accelerate the drying of the conductive paper, the drying device 3 is further provided with a second porous plate 332, a cross air blower 331 and a second electric heating element 333.

The upper surface of the drying platform 33 is provided with a second microporous plate 332 and a second electric heating element 333, wherein the second electric heating element 333 is a heating wire, a cross wind fan 331 is arranged below the drying platform 33, and wind blown by the cross wind fan 331 blows above the drying platform 33 through the second microporous plate 332 to dry the conductive paper passing through the upper part of the second microporous plate 332.

In this embodiment, a corresponding third control system may be further disposed on the drying device 3, and includes a third speed adjusting system 341, a second pressure control system 342, a temperature/air volume control system 343, and a third display 344, where the third speed adjusting system 341 adjusts the rotation speeds of the two second rollers 31 to match the rotation speeds of the material feeding wheel 11, the first roller 13, and the material receiving wheel 32; the pressure between the two second rolls 31 is controlled by a second pressure control system 342; the heating temperature and the air supply quantity of the second electric heating element 333 and the cross wind blower 331 are adjusted by the temperature/air quantity control system 343, and the related parameters are displayed by the third display 344.

It should be noted that the first control system, the second control system, and the third control system in this embodiment may also be integrally provided to serve as a single control cabinet to control the conductive paper preparing apparatus in this embodiment, and a specific control manner is not limited in this embodiment.

The embodiment also shows a process for manufacturing the conductive paper by using the conductive paper manufacturing equipment.

First, the sheet is secured to the discharge wheel 11 with the sheet end extended and secured to the take-up wheel 32 to facilitate the continuity of the printing process. Meanwhile, the hydrogen bond opening treatment is carried out on the paper by utilizing the water vapor on the pretreatment device 1, and the specific method comprises the following steps: the temperature of the steam generator 12 in the pretreatment device 1 is raised to 80 ℃, steam is volatilized, the steam acts on paper through the first microporous plate 122, the volatilization amount of the steam is adjusted to control the water content of the paper to be not more than 20%, so that the opening of a large number of hydrogen bonds in the paper is ensured, and meanwhile, a part of the hydrogen bonds are reserved to maintain the strength and toughness of the paper.

Thereafter, the pressure of the three printing roller sets 21 was adjusted to 0.5kgf/cm²The flow of the feeding pump 241 is adjusted to 20ml/s, and the filling amount and thickness of the conductive paste filled into the paper are accurately controlled by adjusting the flow of the pump, the pumping pressure and the pressure between the printing wheel 213 and the extrusion wheel 214, so that the surface resistance value of the conductive paper is accurately controlled. In addition, the three printing wheel sets 21 can respectively control the pressure and the flow rate, and the design of the paper surface resistance gradient is realized.

Finally, the second roll 31 of the drying device 3 is heated to 90 ℃ and the pressure is adjusted to 0.3kgf/cm²Flattening the obtained conductive paper, bonding the conductive slurry and hydrogen bond groups in the paper to form new hydrogen bonds, improving the toughness and strength of the conductive paper, and introducingDrying by a cross air fan 331 and a second electric heating element 333, setting the drying temperature to be 60 ℃, setting the air quantity to be 5 cubic meters per minute, and finally performing rolling operation by using the material receiving wheel 32 to finish the preparation of the conductive paper.

In order to verify the performance of the conductive paper prepared by the above process, the surface resistivity of the conductive paper was measured by a four-probe method at room temperature using an FZ-2006A semiconductor resistivity tester manufactured by shanghai hua rock co.

The paper is cut into samples with the thickness of 15mm multiplied by 100mm, and the dry tension of the conductive paper is measured by a tensile strength tester of L & W company according to the measuring method of GB/T12914-2008, and the tensile strength is 85 N.m/g.

In conclusion, the prepared conductive paper has the surface resistance value capable of meeting the conductive performance requirement of the conductive paper, and the tensile strength of the conductive paper is obviously improved compared with the conventional conductive paper.

The technical scheme of the present application is described in detail above with reference to the accompanying drawings, and the present application provides a conductive paper preparation apparatus for applying water-soluble polymer conductive paste to paper, the apparatus comprising: the device comprises a discharging wheel, a preprocessing device, a printing device and a receiving wheel; the printing device is provided with at least one group of printing wheel sets, the discharging wheel and the receiving wheel rotate in the same direction so that paper passes through the printing wheel sets, and the printing wheel sets are used for coating the water-soluble polymer conductive slurry on the paper; the pre-treatment device is arranged between the feeding wheel and the printing device and is used for releasing water vapor to the paper moving to the printing device from the upper part of the pre-treatment device so as to open hydrogen bonds in the paper. Through the technical scheme in this application, carry out the steam heating by preprocessing device to the paper to open the hydrogen bond in the paper, make conductive paper by printing device with the electrically conductive thick liquids coating of water-soluble polymer on the paper again, when guaranteeing paper intensity, make the electrically conductive thick liquids of water-soluble polymer combine together with the hydrogen bond in the paper, avoid conductive paper's coating to drop.

In the present application, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The shapes of the various elements in the drawings are illustrative and do not preclude the existence of certain differences from the actual shapes, and the drawings are used for the purpose of illustrating the principles of the present application and are not intended to limit the present application.

Although the present application has been disclosed in detail with reference to the accompanying drawings, it is to be understood that such description is merely illustrative and not restrictive of the application of the present application. The scope of the present application is defined by the appended claims and may include various modifications, adaptations, and equivalents of the subject application without departing from the scope and spirit of the present application.

Claims

1. An apparatus for preparing a conductive paper, wherein the apparatus is used for applying a water-soluble polymer conductive paste to a paper sheet, the apparatus comprising: the device comprises a discharging wheel (11), a pretreatment device (1), a printing device (2) and a receiving wheel (32);

the feeding wheel (11) is arranged at one end of the printing device (2), the receiving wheel (32) is arranged at the other end of the printing device (2), at least one group of printing wheel sets (21) is arranged on the printing device (2), and the feeding wheel (11) and the receiving wheel (32) rotate in the same direction, so that when the paper passes through the printing wheel sets (21), the printing wheel sets (21) coat the water-soluble polymer conductive slurry on the paper to manufacture conductive paper;

the pretreatment device (1) is arranged between the feeding wheel (11) and the printing device (2), and the pretreatment device (1) volatilizes water vapor to the paper moving to the printing wheel set (21) from the upper part of the pretreatment device so as to open hydrogen bonds in the paper.

2. The conductive paper preparing apparatus according to claim 1, wherein the preprocessing device (1) is provided with a material platform, a side of the material platform away from the material feeding wheel (11) is provided with a first gap, and the preprocessing device (1) further comprises: a steam generator (12), a gas homogenizing groove (121) and a first roller (13);

the steam generator (12) is arranged below the material platform, the air homogenizing groove (121) is arranged between the steam generator (12) and the material platform, and water vapor generated by the steam generator (12) is uniformly volatilized to the material platform through the air homogenizing groove (121);

the two first rollers (13) are arranged in the first notch in parallel up and down, and the two first rollers (13) flatten paper passing through the upper part of the first notch by a first preset pressure.

3. The conductive paper manufacturing apparatus according to claim 2, wherein the first roll (13) is uniformly provided with a first elastic coating (131), and the first elastic coating (131) is an elastic rubber or elastic polyurethane layer;

a first pressure sensor (132) is further arranged between the two first rollers (13), and the first pressure sensor (132) is used for detecting the pressure between the two first rollers (13).

4. The apparatus for preparing conductive paper according to claim 2, wherein a first micro-porous plate (122) is provided on an upper surface of the material table so that the water vapor is volatilized.

5. The conductive paper making apparatus according to claim 1, wherein said printing wheel set (21) comprises: a trough (211), a material homogenizer (212), a printing wheel (213) and an extrusion wheel (214);

the printing wheel (213) is arranged above the printing device (2), the extrusion wheel (214) is arranged below the printing device (2), and the extrusion wheel (214) is opposite to the printing wheel (213);

the material homogenizer (212) is arranged above the printing wheel (213), the material homogenizer (212) is provided with the material groove (211), and the water-soluble polymer conductive slurry is injected into the material homogenizer (212) from the material groove (211) and then is uniformly distributed on the printing wheel (213) by the material homogenizer (212) so that the printing wheel (213) coats the water-soluble polymer conductive slurry on the paper,

the turning direction of the printing wheel (213) is the same as that of the discharging wheel (11) and is opposite to that of the extrusion wheel (214), and the extrusion wheel (214) extrudes the paper coated with the water-soluble polymer conductive paste below the printing wheel (213) at a second preset pressure.

6. The conductive paper producing apparatus as set forth in claim 5, wherein said printing wheel set (21) further comprises: a second pressure sensor (215);

the second pressure sensor (215) is located on the pressing wheel (214), the second pressure sensor (215) being used to detect the pressure between the printing wheel (213) and the pressing wheel (214).

7. The conductive paper producing apparatus according to claim 5, wherein the printing device (2) further comprises: a feed pump (241) and a feed delivery pipe (242);

the material conveying pipe (242) is connected to the feeding pump (241) and the material tank (211), and the water-soluble polymer conductive slurry pumped by the feeding pump (241) is conveyed to the material tank (211) through the material conveying pipe (242).

8. The conductive paper producing apparatus according to claim 1, further comprising: a drying device (3);

drying device (3) set up in printing device (2) with receive between the material wheel (32), drying device (3) are including drying platform (33), second roll (31) and first electric heating element (312), drying platform (33) are kept away from one side of receiving material wheel (32) is provided with the second opening, two second roll (31) parallel from top to bottom set up in the second opening, at least one the inside of second roll (31) is provided with first electric heating element (312), the heat that first electric heating element (312) produced is right second roll (31) heating, two second roll (31) pass through with the third pressure that predetermines flattens the conducting paper of second opening top.

9. The conductive paper preparation apparatus according to claim 8, wherein a second elastic coating (311) is uniformly distributed on the second roller (31), and the second elastic coating (311) is an elastic rubber or elastic polyurethane layer;

and a third pressure sensor (313) is also arranged between the two second rollers (31), and the third pressure sensor (313) is used for detecting the pressure between the two second rollers (31).

10. The apparatus for preparing the conductive paper according to claim 8, wherein a second micro-porous plate (332) is disposed on the upper surface of the drying platform (33), a cross-wind fan (331) is disposed below the drying platform (33), and wind blown by the cross-wind fan (331) is blown above the drying platform (33) through the second micro-porous plate (332) to dry the conductive paper passing above the second micro-porous plate (332);

the upper surface of the drying platform (33) is also provided with a second electric heating element (333), and the second electric heating element (333) is a heating wire.