CN105367809B - Method for manufacturing nickel-plated carbon fiber plate with electromagnetic shielding performance - Google Patents
Method for manufacturing nickel-plated carbon fiber plate with electromagnetic shielding performance Download PDFInfo
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Abstract
The invention discloses a method for manufacturing a nickel-plated carbon fiber plate with electromagnetic shielding performance, which comprises the following steps of firstly, treating the surface of carbon fiber cloth; step two, carrying out magnetron sputtering nickel plating on the surface of the carbon fiber cloth; step three, electroplating copper on the surface of the carbon fiber cloth; electroplating nickel on the surface of the carbon fiber cloth; step five, drying; and step six, pressing a plate. The electromagnetic shielding effectiveness of the nickel-plated carbon fiber plate is more than 40dB in an electromagnetic field of 150 KHz-18 GHz, and the stability of the electromagnetic shielding effect of the carbon fiber cloth can be effectively improved through the structural design of the nickel-copper-nickel three-layer coating; the molding of the composite material and the resin layer on the surface of the nickel-plated carbon fiber improve the corrosion resistance of the workpiece.
Description
Technical Field
The invention belongs to the technical field of electromagnetic shielding, and particularly relates to a method for manufacturing a nickel-plated carbon fiber plate with electromagnetic shielding performance.
Background
The electromagnetic shielding carriage body and the electromagnetic shielding case are common parts in the field of electromagnetic shielding, and the electromagnetic shielding carriage body and the electromagnetic shielding case are made of electromagnetic shielding plates, so that the current manufacturing process flow is complex. Firstly, in order to ensure the strength of the compartment body, the plates of the compartment body generally adopt a sandwich structure of metal skin and foam core materials, and a metal frame for supporting and reinforcing is arranged in the middle; secondly, in order to ensure the shielding effect, a conductive aluminum foil is adhered to the lap joint of the plates, the glue consumption and the rivet spacing are required to be controlled when the angle aluminum is installed, and a copper wire mesh and the rivet spacing are required to be assembled and controlled when the wrap angle and the accessory are installed to prevent electromagnetic leakage; finally, in order to ensure the corrosion resistance effect of the plates, after the carriage body is assembled, paint, even heavy-duty anticorrosive paint, is sprayed on the surface of the metal skin to improve the salt spray resistance of the carriage body under extreme environmental conditions.
The prior art has the following defects that 1, the metal skin and the frame in the traditional sandwich structure plate are all made of pure metal, so that the carriage body has heavy weight; 2. the metal skin has poor salt spray resistance, and needs surface spraying paint to provide protection, but as time goes on, the paint layer is easy to fall off or crack, so that serious problems such as mildew or rusting are caused, the electromagnetic shielding efficiency of the compartment body is reduced, and the service life of the compartment body is prolonged.
Disclosure of Invention
The invention aims to provide a method for manufacturing a nickel-plated carbon fiber plate with electromagnetic shielding performance, and solves the technical problems of heavy plate quality, poor electromagnetic shielding performance and poor corrosion resistance of electromagnetic shielding in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for manufacturing a nickel-plated carbon fiber plate with electromagnetic shielding performance comprises the following steps:
step one, carbon fiber cloth surface decontamination: remove the pollutants and organic active agents adsorbed on the surface of the carbon fiber cloth, provide a good plating environment for the subsequent process and ensure the binding force between the plating and the carbon fiber cloth.
Step two, magnetron sputtering nickel plating on the surface of the carbon fiber cloth: and (3) carrying out vacuum nickel plating on the surface of the carbon fiber cloth treated in the first step by adopting a magnetron sputtering technology, and uniformly spraying nickel ions in a nanoparticle form on the surface of the carbon fiber cloth to form the primary nickel-plated carbon fiber cloth, wherein the advancing speed of the carbon fiber cloth in a magnetron sputtering nickel plating device is 90-100 m/h. Because the conductivity and the electromagnetic shielding performance of copper are better than those of nickel, but copper is not easy to be directly plated on the surface of carbon fiber cloth, a layer of nickel is plated on the carbon fiber cloth as a copper-plated base layer before copper plating, and a magnetron sputtering technology is adopted for nickel plating, the nickel ion deposition rate is high, and a nickel film obtained by sputtering is better combined with the carbon fiber cloth.
Step three, copper electroplating: the surface of the one-time nickel-plated carbon fiber cloth is plated with copper in an electroplating mode, the current density of the electroplating copper is 180-200A/dm 2, the voltage is 8-10V, the advancing speed of the one-time nickel-plated carbon fiber cloth in a copper plating electroplating pool is 4-6 m/h, the temperature of electroplating liquid during copper plating is 40-45 ℃, the copper-plated carbon fiber cloth is formed, and the copper-plated layer ensures that the carbon fiber cloth has better conductivity and electromagnetic shielding performance. This step can be accomplished using prior art copper plating baths.
Step four, electroplating nickel: carrying out secondary nickel plating on the surface of the copper-plated carbon fiber cloth by adopting an electroplating mode, wherein the current density of the electroplated nickel is 180-200A/dm 2, the voltage is 8-10V, the advancing speed of the copper-plated carbon fiber cloth in a nickel plating electroplating tank is 4-6 m/h, and the temperature of electroplating solution is 40-45 ℃ during nickel plating, so as to obtain the secondary nickel-plated carbon fiber cloth; since the electroplated copper layer is easily oxidized, it is necessary to apply a nickel layer on the electroplated copper layer for protection. This step can be achieved using a nickel plating bath of the prior art.
Step five, drying: and removing the residual electroplating solution on the surface of the secondary nickel-plated carbon fiber cloth, and drying the electroplating solution.
Step six, pressing into a board: and C, pressing the secondary nickel-plated carbon fiber cloth processed in the step five with resin to form the nickel-plated carbon fiber plate with the electromagnetic shielding performance, wherein the resin layer covers the surface of the whole secondary nickel-plated carbon fiber cloth. Because nickel plating carbon fiber cloth is softer, need increase the resin layer and improve intensity, the resin plays the effect of design and protection cloth after the solidification, has improved nickel plating carbon fiber cloth's corrosion resisting property, but the resin should not be too thick, because the density of resin is great, the weight that can increase the panel is too thick.
And further improving, in the fifth step, carrying out tertiary washing on the secondary nickel-plated carbon fiber cloth to remove residual electroplating solution on the surface, wherein the drying temperature is 160-170 ℃, and the advancing speed of the carbon fiber cloth in a dryer is 4-6 m/h. And after the secondary nickel plating is finished, the secondary nickel-plated carbon fiber cloth needs to be dried to prevent rusting.
Further improved, in the first step, pollutants and active agents adsorbed on the surface of the carbon fiber cloth are removed in an ion bombardment mode, the advancing speed of the carbon fiber cloth in the decontamination equipment is 90-100 m/h, the active agents on the surface of the carbon fiber cloth are vaporized, and the treatment degree of the pollutants on the surface of the carbon fiber cloth is controlled according to the amount of the vaporized gas.
Further improved, the thickness of the nickel-plated carbon fiber plate is 0.9-1 mm.
Further improved, the carbon fiber cloth is twill carbon fiber cloth of T300-3K,
and after the third step is finished, carrying out three-stage washing on the copper-plated carbon fiber cloth to remove residual liquid on the surface of the cloth, and drying at 95-100 ℃ of a single layer, wherein the fourth step is not carried out immediately after the third step is finished, so that a plating layer is prevented from rusting, and drying treatment is required.
Further improved, the thickness of the plating layer of the magnetron sputtering nickel plating in the second step is 0.04-0.05 mm.
Further improved, the thickness of the plating layer of the electroplated copper in the third step is 0.04-0.05 mm.
Further improved, the thickness of the nickel plating layer in the fourth step is 0.04-0.05 mm.
Further improved, the electromagnetic shielding effectiveness of the nickel-plated carbon fiber plate is more than 40dB in an electromagnetic field of 150 KHZ-18 GHZ, and the requirement of the shielding effectiveness of general military electronic is met.
Further improved, the method also comprises a seventh step of overlapping and connecting the plurality of nickel-plated carbon fiber boards manufactured in the sixth step into a large board with electromagnetic shielding performance according to the design size by adopting the following steps:
(1) and ablating the resin layer of the overlapping part of each nickel-plated carbon fiber plate by using high-energy laser. Since the presence of the resin layers on the surfaces of the two nickel-plated carbon fiber boards with electromagnetic shielding properties would cause the resistance to electric conduction, electromagnetic leakage would certainly occur, and the resin layers on the faying surfaces must be eliminated.
(2) Brushing a conductive liquid on the lap joint part of the nickel-plated carbon fiber plate treated in the step (1); and the conduction between the nickel plating layers of the two nickel-plated carbon fiber plates which are in lap joint is ensured.
(3) And (3) overlapping and splicing the nickel-plated carbon fiber boards processed in the step (2) into a large board, coating conductive adhesive on overlapping parts of the nickel-plated carbon fiber boards, and connecting the plurality of nickel-plated carbon fiber boards together by combining a fastening device to form the large board with electromagnetic shielding performance. The conductive adhesive is used for sealing the lap joint gap between the two nickel-plated carbon fiber plates, preventing electromagnetic waves from leaking from the lap joint gap and ensuring that the electromagnetic shielding efficiency of the large plates connected by lap joint meets the requirement.
In a further improvement, the conductive adhesive is ZB2561 organosilicon conductive adhesive, ZB2561 organosilicon conductive adhesive is produced by Nanjing Zhongbei electronics Limited company, has good elasticity and toughness, stable performance and volume resistivity of 10-3Ω·cm。
The carbon fiber cloth has the advantages of light weight, high strength, corrosion resistance, aging resistance, good durability, good earthquake resistance, stable physical performance and the like, and the tensile strength of the carbon fiber cloth is 7-10 times that of steel with the same section. The nickel-plated carbon fiber board manufactured by adopting the carbon fiber cloth as the base material is light in weight and convenient to carry; the high strength ensures that the nickel-plated carbon fiber board is not easy to be damaged by external force in the using process, the corrosion resistance further improves the service life of the nickel-plated carbon fiber board, and the cost is reduced.
The principle of electromagnetic shielding: when electromagnetic waves reach the surface of the shielding body, two situations arise: 1. due to the impedance discontinuity on the interface of the air and the metal, the incident electromagnetic wave is reflected; 2. electromagnetic waves which are not reflected by the surface of the shield and enter the shield are attenuated, so-called absorbed, by the shielding material during the forward propagation in the shield; when the residual energy which is not attenuated in the shield body is transmitted to the other surface of the shield body, the residual energy meets the interface with discontinuous metal-air impedance, a secondary reflection is formed and returns back to the shield body, and the reflection can be reflected on the interface of two metals for multiple times. In summary, the electromagnetic attenuation of electromagnetic shielding is mainly based on the reflection of electromagnetic waves and the absorption of electromagnetic waves. The copper has good conductive performance and good absorption and attenuation performance on electromagnetic waves, so that the copper-plated layer in the nickel-plated carbon fiber board has good electromagnetic shielding performance.
Compared with the prior art, the invention has the following beneficial effects:
1. the nickel-plated carbon fiber board manufactured by adopting the carbon fiber cloth as the base material is light in weight and convenient to carry; the high strength ensures that the nickel-plated carbon fiber board is not easy to be damaged by external force in the using process, the corrosion resistance further improves the service life of the nickel-plated carbon fiber board, and the cost is reduced.
2. Through the structural design of the nickel-copper-nickel three-layer coating, the primary nickel plating provides a good foundation for copper plating, and the secondary nickel plating protects and prevents the copper plating layer from oxidation, thereby effectively improving the stability of the electromagnetic shielding effect of the nickel-plated carbon fiber board.
3. The resin layer on the surface of the nickel-plated carbon fiber improves the strength of the nickel-plated carbon fiber board, and facilitates the subsequent manufacture of the electromagnetic shielding box body.
4. The weight of the nickel-plated carbon fiber plate is only increased by about 20 percent, and the requirement of light weight of the electromagnetic protection body is met.
5. The lap joint seam between two nickel-plated carbon fiber plates is sealed by filling the conductive adhesive, so that electromagnetic waves are prevented from leaking from the lap joint seam, and the electromagnetic shielding efficiency of the lap joint connected large plates is ensured to meet the requirements.
Drawings
FIG. 1 is a flow chart of the manufacturing process of the nickel-plated carbon fiber cloth plate of the invention.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following will clearly and completely describe the technical solution of the present invention with reference to the embodiments of the present invention.
The first embodiment is as follows:
the nickel-plated carbon fiber cloth with the electromagnetic shielding performance is manufactured by the following steps:
step one, carbon fiber cloth surface decontamination: removing pollutants and active agents adsorbed on the surface of the carbon fiber cloth in an ion bombardment mode, wherein the running speed of the carbon fiber cloth in a decontamination device is 90m/h, the active agents on the surface of the carbon fiber cloth are vaporized, and the treatment degree of the pollutants on the surface of the carbon fiber cloth is controlled according to the amount of the vaporized gas, wherein the carbon fiber cloth is T300-3K twill carbon fiber cloth.
Step two, magnetron sputtering nickel plating on the surface of the carbon fiber cloth: and (3) carrying out vacuum nickel plating on the surface of the carbon fiber cloth treated in the first step by adopting a magnetron sputtering technology, and uniformly spraying nickel ions in a nano particle form on the surface of the carbon fiber cloth to form the one-step nickel-plated carbon fiber cloth, wherein the advancing speed of the carbon fiber cloth in a magnetron sputtering nickel plating device is 90 m/h.
Step three, copper electroplating: the method comprises the steps of adopting an electroplating mode to plate copper on the surface of the one-time nickel-plated carbon fiber cloth, enabling the current density of the electroplating copper to be 180A/dm2, enabling the voltage to be 8V, enabling the width of a copper-plated electroplating pool to be 1.2m and the length to be 2m, enabling the processing speed of the one-time nickel-plated carbon fiber cloth in the copper-plated electroplating pool to be 4m/h, enabling the temperature of electroplating liquid to be 40 ℃ during copper plating, forming the copper-plated carbon fiber cloth, carrying out three-stage washing on the copper-plated carbon fiber cloth to remove residual liquid on the.
Fourthly, electroplating nickel: and (2) carrying out secondary nickel plating on the surface of the copper-plated carbon fiber cloth by adopting an electroplating mode, wherein the current density of the electroplated nickel is 180A/dm2, the voltage is 8V, the width of a nickel plating electroplating pool is 1.2m, the length of the nickel plating electroplating pool is 2m, the treatment speed of the carbon fiber cloth in the nickel plating electroplating pool is 4m/h, the temperature of electroplating solution during nickel plating is 40 ℃, and thus the secondary nickel-plated carbon fiber cloth is obtained.
Step five, drying: and carrying out tertiary washing on the secondary nickel-plated carbon fiber cloth to remove residual electroplating solution on the surface, and drying the secondary nickel-plated carbon fiber cloth subjected to tertiary washing at the drying temperature of 160 ℃, wherein the advancing speed of the carbon fiber cloth in a dryer is 4 m/h.
The thickness of the plating layer of the magnetron sputtering nickel plating of the nickel-plated carbon fiber cloth prepared by the steps is 0.045 mm. The thickness of the plated layer of the electroplated copper is 0.045mm, and the thickness of the plated layer of the electroplated nickel is 0.045 mm.
Example two:
the nickel-plated carbon fiber cloth with the electromagnetic shielding performance is manufactured by the following steps:
step one, carbon fiber cloth surface decontamination: removing pollutants and active agents adsorbed on the surface of the carbon fiber cloth in an ion bombardment mode, wherein the advancing speed of the carbon fiber cloth in a decontamination device is 100m/h, the active agents on the surface of the carbon fiber cloth are vaporized, and the treatment degree of the pollutants on the surface of the carbon fiber cloth is controlled according to the amount of the vaporized gas, wherein the carbon fiber cloth is T300-3K twill carbon fiber cloth.
Step two, magnetron sputtering nickel plating on the surface of the carbon fiber cloth: and (3) carrying out vacuum nickel plating on the surface of the carbon fiber cloth treated in the first step by adopting a magnetron sputtering technology, and uniformly spraying nickel ions in a nano particle form on the surface of the carbon fiber cloth to form the one-step nickel-plated carbon fiber cloth, wherein the advancing speed of the carbon fiber cloth in a magnetron sputtering nickel plating device is 100 m/h.
Step three, copper electroplating: plating copper on the surface of the one-time nickel-plated carbon fiber cloth in an electroplating mode, wherein the current density of the electroplating copper is 200A/dm2The voltage is 10V, the width of the copper plating electroplating tank is 1.2m, the length of the copper plating electroplating tank is 2m, the processing speed of the one-time nickel-plated carbon fiber cloth in the copper plating electroplating tank is 6m/h, the temperature of electroplating solution during copper plating is 45 ℃, the copper-plated carbon fiber cloth is formed, the copper-plated carbon fiber cloth is subjected to three-stage water washing to remove residual liquid on the surface of the cloth, and then is dried at a single layer temperature of 95 ℃.
Fourthly, electroplating nickel: plating nickel on the surface of the copper-plated carbon fiber cloth in an electroplating mode for the second time, wherein the current density of the electroplating nickel is 200A/dm2The voltage is 10V, the width of the nickel plating bath is 1.2m, the length of the nickel plating bath is 2m, the processing speed of the carbon fiber cloth in the nickel plating bath is 6m/h, and the temperature of the electroplating solution during nickel plating is 45 ℃, so that the secondary nickel-plated carbon fiber cloth is obtained.
Step five, drying: and carrying out tertiary washing on the secondary nickel-plated carbon fiber cloth to remove residual electroplating solution on the surface, and drying the secondary nickel-plated carbon fiber cloth subjected to tertiary washing at the drying temperature of 170 ℃, wherein the advancing speed of the carbon fiber cloth in a dryer is 6 m/h.
The thickness of the plating layer of the magnetron sputtering nickel plating of the nickel-plated carbon fiber cloth manufactured according to the steps is 0.0427 mm. The thickness of the copper-electroplating coating is 0.0427mm, and the thickness of the nickel-electroplating coating is 0.0427 mm.
Comparative example one:
is a carbon fiber cloth with T300 and 3K twill.
Comparing the first and second examples with the first comparative example:
the characteristics of the nickel-plated carbon fiber cloth produced in the first and second examples and the carbon fiber cloth produced in the first comparative example were measured, and the measurement results are shown in table 1.
TABLE 1 comparison of the properties of three fiber cloths
Table 1 shows that:
(1) compared with the carbon fiber cloth in the comparative example I, the carbon fiber cloth prepared by nickel plating, copper plating and nickel plating only increases the mass by about 20 percent, and meets the requirement of light weight;
(2) compared with the carbon fiber cloth in the comparative example I, the carbon fiber cloth prepared by nickel plating, copper plating and nickel plating has the advantages of reduced resistance value and greatly improved conductive capability.
Example three:
as shown in fig. 1, compared with the first embodiment, the secondary nickel-plated carbon fiber cloth processed in the fifth step is pressed with resin to form a nickel-plated carbon fiber plate with electromagnetic shielding performance, and the resin layer covers the whole surface of the secondary nickel-plated carbon fiber cloth. The other steps are the same as the first embodiment to manufacture the nickel-plated carbon fiber board.
Example four:
and (3) compared with the second embodiment, the secondary nickel-plated carbon fiber cloth processed in the fifth step and resin are pressed to form the nickel-plated carbon fiber plate with the electromagnetic shielding performance, the resin layer covers the surface of the whole secondary nickel-plated carbon fiber cloth, the thickness of the resin layer is the same as that in the third embodiment, and the other steps are the same as those in the second embodiment to form the nickel-plated carbon fiber plate.
Comparative example two:
and (3) adopting the carbon fiber cloth with T300-3K twill, pressing the carbon fiber cloth and resin to form a carbon fiber plate, wherein the resin layer covers the surface of the whole carbon fiber cloth, and the thickness of the resin layer is the same as that of the resin layer in the third embodiment and the fourth embodiment.
Comparing the third and fourth examples with the second comparative example:
the electromagnetic shielding performance of the nickel-plated carbon fiber plate and the carbon fiber plate is detected, and an electromagnetic shielding effectiveness test is carried out according to the provisions of GB/T12190-2006, and the obtained results are shown in Table 2.
TABLE 2 electromagnetic frequency vs. shielding effectiveness
As can be seen from Table 2, the electromagnetic shielding effectiveness of the nickel-plated carbon fiber plate is greater than 40dB when the frequency of the electromagnetic wave is between 150K and 18G, and the requirement of the general military electronic shielding effectiveness is met.
Example five:
compared with the three phases of the embodiment, the embodiment lacks a secondary nickel plating process, and other steps are the same as the three phases of the embodiment to prepare the copper-plated carbon fiber plate.
Example three compares to example five:
the nickel-plated carbon fiber sheets prepared in example three and the copper-plated carbon fiber sheets prepared in example five were subjected to a salt spray test: the salt spray test is a main means for detecting the corrosion resistance of the nickel-plated carbon fiber board, and the carbon fiber boards prepared in the first embodiment and the second embodiment have the advantages of bright surface, clear lines, no defects such as glue shortage and pinholes and the like. The salt spray test was carried out at conditions 7.2 in GJB150.11A-2009 for a test time of 144h (72h salt spray and 72h drying program). The experimental detection result shows that: in the fifth example, the carbon fiber sheet without nickel plating had a significant verdigris on the surface, indicating that the resin layer was corroded, and the copper plating layer was directly contacted with NaCl solution in the air, causing electrochemical corrosion and the copper plating layer was damaged. In the third embodiment, the surface of the carbon fiber plate prepared by the nickel plating treatment is still smooth and bright, and has no metal corrosion impurities such as verdigris, and the like, which indicates that the nickel plating layer plays a role in protecting the copper plating layer and ensures that the carbon fiber plate has good electromagnetic shielding performance.
In conclusion, the nickel-plated carbon fiber board has the advantages of light weight, good electromagnetic shielding performance and strong corrosion resistance.
The embodiments of the present invention are not limited to the specific embodiments described herein, but rather, the embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (7)
1. A method for manufacturing a nickel-plated carbon fiber plate with electromagnetic shielding performance is characterized by comprising the following steps:
step one, carbon fiber cloth surface decontamination: removing pollutants and organic active agents adsorbed on the surface of the carbon fiber cloth;
step two, magnetron sputtering nickel plating on the surface of the carbon fiber cloth: performing vacuum nickel plating on the surface of the carbon fiber cloth treated in the first step by adopting a magnetron sputtering technology, and uniformly spraying nickel ions in a nanoparticle form on the surface of the carbon fiber cloth to form the primary nickel-plated carbon fiber cloth, wherein the advancing speed of the carbon fiber cloth in a magnetron sputtering nickel plating device is 90-100 m/h, and the thickness of a plating layer of magnetron sputtering nickel plating is 0.04-0.05 mm;
step three, copper electroplating: plating copper on the surface of the primary nickel-plated carbon fiber cloth in an electroplating mode, wherein the current density of the electroplating copper is 180-200A/dm 2, the voltage is 8V-10V, the advancing speed of the primary nickel-plated carbon fiber cloth in a copper plating electroplating tank is 4-6 m/h, the temperature of electroplating solution during copper plating is 40-45 ℃, so that the copper-plated carbon fiber cloth is formed, and the thickness of a plating layer of the electroplating copper is 0.04-0.05 mm;
step four, electroplating nickel: carrying out secondary nickel plating on the surface of the copper-plated carbon fiber cloth by adopting an electroplating mode, wherein the current density of the electroplated nickel is 180-200A/dm 2, the voltage is 8V-10V, the advancing speed of the copper-plated carbon fiber cloth in a nickel plating electroplating tank is 4-6 m/h, the temperature of electroplating solution during nickel plating is 40-45 ℃, so as to obtain the secondary nickel-plated carbon fiber cloth, and the thickness of a plating layer of the electroplated nickel is 0.04-0.05 mm;
step five, drying: removing residual electroplating solution on the surface of the secondary nickel-plated carbon fiber cloth, and drying the electroplating solution;
step six, pressing into a board: and pressing the secondary nickel-plated carbon fiber cloth treated in the fifth step with resin to form a nickel-plated carbon fiber plate, wherein the resin layer covers the whole surface of the secondary nickel-plated carbon fiber cloth.
2. The manufacturing method of the carbon fiber plate with the electromagnetic shielding performance as claimed in claim 1, wherein in the first step, the contaminants and the active agent adsorbed on the surface of the carbon fiber cloth are removed by ion bombardment, and the traveling speed of the carbon fiber cloth in the decontamination equipment is 90-100 m/h.
3. The method for manufacturing the carbon fiber plate with the electromagnetic shielding performance according to claim 1, wherein the thickness of the nickel-plated carbon fiber plate is 0.9-1 mm.
4. The method for manufacturing the carbon fiber plate with the electromagnetic shielding performance according to claim 1, wherein after the third step, the copper-plated carbon fiber cloth is subjected to three-stage water washing to remove residual liquid on the surface of the cloth, and then is subjected to single-layer drying at 95-100 ℃.
5. The method for manufacturing the carbon fiber plate with the electromagnetic shielding performance according to claim 1, wherein in the fifth step, the secondary nickel-plated carbon fiber cloth is subjected to three-stage water washing to remove residual electroplating solution on the surface, the drying temperature is 160-170 ℃, and the traveling speed of the carbon fiber cloth in a dryer is 4-6 m/h.
6. The method for manufacturing the carbon fiber plate with the electromagnetic shielding performance according to claim 1, wherein the electromagnetic shielding effectiveness of the nickel-plated carbon fiber plate is more than 40dB in an electromagnetic field of 150KHz to 18 GHz.
7. The method for manufacturing a carbon fiber plate with electromagnetic shielding performance according to any one of claims 1 to 6, further comprising a seventh step of overlapping the plurality of nickel-plated carbon fiber plates manufactured in the sixth step into a large plate with electromagnetic shielding performance according to a design size by the following steps:
(1) removing the resin layer at the overlapping part of each nickel-plated carbon fiber plate by high-energy laser ablation;
(2) brushing a conductive liquid on the lap joint part of the nickel-plated carbon fiber plate treated in the step (1);
(3) and (3) overlapping and splicing the nickel-plated carbon fiber boards processed in the step (2) into a large board, coating conductive adhesive on overlapping parts of the nickel-plated carbon fiber boards, and connecting the plurality of nickel-plated carbon fiber boards together by combining a fastening device to form the large board with electromagnetic shielding performance.
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| CN103114457A (en) * | 2013-01-25 | 2013-05-22 | 天诺光电材料股份有限公司 | Preparation method of electromagnetic shielding material, electromagnetic shielding material and applications thereof |
| CN103724930A (en) * | 2013-05-28 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Nickel coating carbon fiber composite material and preparation method thereof |
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| CN101876140A (en) * | 2009-04-30 | 2010-11-03 | 昆山市同福电子材料厂 | Preparation method of electromagnetic shielding conductive fabric |
| CN103114457A (en) * | 2013-01-25 | 2013-05-22 | 天诺光电材料股份有限公司 | Preparation method of electromagnetic shielding material, electromagnetic shielding material and applications thereof |
| CN103724930A (en) * | 2013-05-28 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Nickel coating carbon fiber composite material and preparation method thereof |
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| CN105367809A (en) | 2016-03-02 |
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