CN110669324B - Conductive glass fiber reinforced plastic, conductive glass fiber reinforced plastic plate and preparation method thereof - Google Patents
Conductive glass fiber reinforced plastic, conductive glass fiber reinforced plastic plate and preparation method thereof Download PDFInfo
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- H01B5/16—Non-insulated conductors or conductive bodies characterised by their form comprising conductive material in insulating or poorly conductive material, e.g. conductive rubber
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- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
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- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
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- C08J2367/06—Unsaturated polyesters
Abstract
The invention mainly aims to provide conductive glass fiber reinforced plastic, a conductive glass fiber reinforced plastic plate and a preparation method thereof. The conductive glass fiber reinforced plastic contains a base material and metal-plated glass fibers, and comprises hollow glass microspheres of nickel-plated copper alloy with the particle size of 40-70 mu m, non-plated glass fibers and carbon fibers. The technical problem to be solved is that hollow glass beads of nickel-plated copper alloy are introduced into glass fiber reinforced plastic, and metal-plated glass fiber and carbon fiber are combined to form a continuous conductive network, so that the glass fiber reinforced plastic has good conductive performance under the condition of less addition amount, and the mechanical strength of the glass fiber reinforced plastic is also good, thereby being more practical.
Description
Technical Field
The invention relates to the field of manufacturing of glass fiber reinforced plastics, in particular to conductive glass fiber reinforced plastics, a conductive glass fiber reinforced plastic plate and a preparation method thereof.
Background
The glass fiber reinforced plastic is a polymer matrix composite material which takes glass fiber as a reinforcing material and resin as a matrix material, has the advantages of light weight, high strength, corrosion resistance and the like, and is widely used in the fields of aerospace, petrochemical industry, transportation, building, shipbuilding, machinery, environmental protection, textile and the like.
With the rapid development of modern electronic technology, the electromagnetic environment is increasingly complex, electromagnetic pollution becomes one of four public hazards threatening the survival of human beings, and in places where electronic equipment is concentrated, the equipment interferes with each other after being started, so that misoperation is caused; in some places where important electronic information is stored, the radiation of electromagnetic waves may cause information leakage; and the electromagnetic radiation protection has become a popular research in various countries in the world due to the long-term use of the electronic equipment, the damage of electromagnetic radiation to human bodies and the like, and the conductive glass fiber reinforced plastics serving as a material for electromagnetic protection has wide application in the fields of electromagnetic wave shielding, antistatic property and the like due to the characteristics of high strength, corrosion resistance and the like of the conductive glass fiber reinforced plastics.
In the prior art, the preparation of the conductive glass fiber reinforced plastic mainly comprises the following methods:
the outer coating method is used for spraying conductive paint or conductive coating on the surface of a glass fiber reinforced plastic product, but the conductive glass fiber reinforced plastic prepared by the outer coating method is easily damaged because the conductive layer is exposed outside.
An internal doping method, in which a conductive material is doped in a preparation process of the glass fiber reinforced plastic; wherein, some doped conductive materials are conductive powder materials, such as carbon black, graphite, silver powder and the like; some of the incorporated conductive materials are conductive fibers, such as metal fibers, carbon fibers, metallized fibers, and the like; however, in order to achieve the required conductivity, the conductive glass fiber reinforced plastic prepared by the internal doping method has a large amount of conductive materials doped therein, which easily degrades the comprehensive performance of the glass fiber reinforced plastic.
Disclosure of Invention
The invention mainly aims to provide conductive glass fiber reinforced plastic, a conductive glass fiber reinforced plastic plate and a preparation method thereof, aiming at solving the technical problems that hollow glass beads plated with nickel-copper alloy are introduced into the glass fiber reinforced plastic, and a continuous conductive network is formed by combining metal-plated glass fiber and carbon fiber, so that the glass fiber reinforced plastic has good conductive performance under the condition of less addition amount, and the glass fiber reinforced plastic has good mechanical strength, thereby being more suitable for practical use.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The invention provides conductive glass fiber reinforced plastic, which comprises a base material and metal-plated glass fibers, wherein the metal-plated glass fibers comprise hollow glass microspheres of nickel-copper plated alloy.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, the particle size of the hollow glass bead of the nickel-plated copper alloy is 40-70 μm.
Preferably, the conductive glass fiber reinforced plastic, wherein the hollow glass micro-beads plated with nickel-copper alloy have a particle size of 50 ± 5 μm.
Preferably, the conductive glass fiber reinforced plastic further comprises uncoated glass fiber and carbon fiber.
Preferably, the conductive glass fiber reinforced plastic comprises the following components in parts by mass:
preferably, the conductive glass fiber reinforced plastic is prepared by chemically reacting 100 parts of resin, 2 parts of curing agent and 1 part of accelerator.
Preferably, the conductive glass fiber reinforced plastic is a chopped glass fiber, and the length of the chopped glass fiber is 10 ± 1 mm.
Preferably, the conductive glass fiber reinforced plastic is 25 parts of the total amount of the metal-coated glass fiber and the non-coated glass fiber.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means. The preparation method of the conductive glass fiber reinforced plastic plate provided by the invention comprises the following steps:
1) preparing materials:
weighing metal-coated glass fibers and non-coated glass fibers, and cutting the metal-coated glass fibers and the non-coated glass fibers into short fibers for later use;
weighing hollow glass microspheres of carbon fibers and nickel-plated copper alloy for later use;
weighing resin, a curing agent and an accelerant, and uniformly mixing to obtain a resin mixed solution;
adding the chopped fibers, the carbon fibers and the hollow glass beads of the nickel-plated copper alloy into the resin mixed solution, and uniformly stirring to obtain a mixture;
2) molding:
coating mold stripping wax on the mold, and preheating;
adding the mixture into the mold, closing the mold, pressurizing, heating and preserving heat according to preset parameters;
and cooling and demolding to obtain the conductive glass fiber reinforced plastic plate.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means. The invention provides a conductive glass fiber reinforced plastic plate prepared by the method.
By the technical scheme, the conductive glass fiber reinforced plastic plate and the preparation method thereof provided by the invention at least have the following advantages:
1. the invention provides a conductive glass fiber reinforced plastic, a conductive glass fiber reinforced plastic plate and a preparation method thereof, wherein hollow glass beads plated with metal glass fiber, carbon fiber and nickel-copper alloy are added into resin to obtain a conductive glass fiber reinforced plastic product; the hollow glass beads of nickel-plated copper alloy are introduced into the glass fiber reinforced plastic, and the nickel-plated copper alloy hollow glass beads are combined with the metal-plated glass fibers and the carbon fibers to form a continuous conductive network, so that the glass fiber reinforced plastic has good conductive performance under the condition of less addition amount, keeps the characteristics of high strength, corrosion resistance and the like of common glass fiber reinforced plastic, and opens up new prospects for the application of glass fiber reinforced plastic products;
2. the invention provides the conductive glass fiber reinforced plastic, the conductive glass fiber reinforced plastic plate and the preparation method thereof, the plated metal glass fiber and the non-plated glass fiber contained in the conductive glass fiber reinforced plastic plate can ensure the strength of the conductive glass fiber reinforced plastic, and the plated metal glass fiber is not exposed in the air, so that the plated metal glass fiber is not oxidized, the conductive glass fiber reinforced plastic is not corroded, and the service life of the conductive glass fiber reinforced plastic plate is prolonged;
3. the conductive glass fiber reinforced plastic, the conductive glass fiber reinforced plastic plate and the preparation method thereof have simple process, the thickness of a final product can be controlled to be centimeter level through calculation, and the surface resistance of the prepared conductive glass fiber reinforced plastic plate is 10－1～10－2And the shielding effect on electromagnetic waves can reach 30dB and above, and the requirements of electromagnetic shielding resistance and antistatic resistance in common places can be met.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the embodiments, structures, features and effects of the conductive glass fiber reinforced plastic and the conductive glass fiber reinforced plastic plate and the preparation method thereof according to the present invention with reference to the preferred embodiments.
The invention provides a conductive glass fiber reinforced plastic, which comprises a base material and metal-plated glass fibers, and comprises hollow glass beads plated with nickel-copper alloy.
In the technical scheme of the invention, the metal-plated glass fiber is arranged in a matrix material in an unoriented manner, and the fiber is mutually lapped to form a communicated conductive network, so that the glass fiber reinforced plastic has conductivity; the metal type of the metallized glass fiber is not specifically limited in the present invention. Generally, when the specific resistance of the metal to be plated is low, the conductivity is good, and the conductivity of glass fiber reinforced plastic to which glass fiber plated with the conductive metal is added is also good. The resistivity of metals such as nickel or copper is low, and the technical effect of the invention is better when the metal such as nickel or copper is plated on the surface of the glass fiber. In the embodiment of the invention, when the surface of the glass fiber is plated with metal such as nickel or copper, the laboratory plating is needed. For the convenience of the test, the examples of the present invention are described only by using aluminized metallic glass fibers which have been mass-produced by the company.
In the prior art, no literature report that the hollow glass beads are used for conductive glass fiber reinforced plastics is found. According to the technical scheme, through the prior art such as chemical plating or vacuum plating, the conductive metal such as nickel and/or copper is plated on the surface of the hollow glass microsphere, so that the conductive metal plated hollow glass microsphere is obtained; the glass fiber is added into a matrix material to be evenly spread, and forms a continuous conductive network together with the metal-plated glass fiber, so that the conductive performance of the product is improved.
The metal species plated on the surface of the hollow glass bead plated with the conductive metal is preferably nickel and/or copper; further, when the metal plated on the surface of the hollow glass microsphere is a nickel-copper alloy, the nickel-copper alloy can exhibit better conductivity because of its low resistivity.
Preferably, the particle size of the hollow glass bead of the nickel-plated copper alloy is 40-70 μm.
Preferably, the conductive glass fiber reinforced plastic, wherein the hollow glass beads of the nickel-plated copper alloy have a particle size of 50 ± 5 μm.
The particle size of the hollow glass beads has great influence on the conductivity and the comprehensive performance of the hollow glass beads. When the particle size of the hollow glass beads is small, on one hand, the small particle size of the hollow glass beads is not easy to realize, and the cost is high; on the other hand, when the particle size of the hollow glass microsphere is small, the process difficulty of plating metal on the surface of the hollow glass microsphere is increased; further, when the particle size of the hollow glass beads is small, the continuity of the hollow glass beads in a conductive network formed by the conductive fibers is poor, which is not beneficial to the improvement of the conductive performance of the hollow glass beads. Therefore, the particle size of the hollow glass microspheres is not preferably too small. When the particle size of the hollow glass beads is larger, the particle size is larger, which is beneficial to the connection among the conductive networks and is beneficial to the conduction, but the number of the particles added with the same mass part of the hollow glass beads is reduced, the total surface area of the metal plating is reduced, and the improvement of the conductive performance is not facilitated. In the technical scheme of the invention, the particle size range of the hollow glass beads is 40-70 μm; furthermore, the hollow glass beads have a particle size range of 45-55 μm, and have a good effect. As the particle size of the hollow glass microspheres further continues to increase, the magnitude of increase in the electrical conductivity thereof becomes smaller.
Preferably, the conductive glass fiber reinforced plastic further comprises uncoated glass fiber and carbon fiber.
The strength of the glass fiber is reduced because the surface of the glass fiber is plated with metal. In the technical scheme of the invention, in order to ensure the mechanical property of the product, the glass fiber is matched with a certain proportion of common glass fiber, namely non-coated glass fiber, so that the strength of the product can be improved.
The carbon fiber is added into the matrix material in a certain proportion, so that the formation of a conductive network of the carbon fiber can be further promoted, and the conductivity of the carbon fiber can be enhanced.
Preferably, the conductive glass fiber reinforced plastic comprises the following components in parts by mass:
the invention modifies the common glass fiber reinforced plastic by reasonably designing and adopting the method of adding the metal-plated glass fiber, the carbon fiber and the nickel-plated copper alloy conductive hollow glass bead into the matrix material, and the glass fiber reinforced plastic has the conductive function on the basis of basically ensuring the original strength of the glass fiber reinforced plastic, thereby widening the application range of the glass fiber reinforced plastic and meeting the requirements of electromagnetic wave shielding, antistatic property and the like.
Preferably, the conductive glass fiber reinforced plastic is prepared by chemically reacting 100 parts of resin, 2 parts of curing agent and 1 part of accelerator.
In the conductive glass fiber reinforced plastic, the amount of the metal-plated glass fiber is 15-16, 15-17, 15-18, 15-19, 15-20, 16-17, 16-18, 16-19, 16-20, 17-18, 17-19, 17-20, 18-20 and 19-20 in parts by mass per 100 parts of resin; the adding amount of the carbon fiber is 5-6, 5-7, 5-8, 5-9, 5-10, 6-7, 6-8, 6-9, 6-10, 7-8, 7-9, 7-10, 8-9, 8-10 and 9-10 in parts by mass; the amount of the hollow glass bead plated with the conductive metal is 5-6, 5-7, 5-8, 5-9, 5-10, 6-7, 6-8, 6-9, 6-10, 7-8, 7-9, 7-10, 8-9, 8-10 and 9-10 parts by mass.
In the technical scheme of the invention, the base material is not limited too much. The technical scheme of the invention can achieve better technical effects when used for modifying various base materials.
Preferably, when the liquid resin is selected, as used in the embodiment of the present invention, 191 resin is ortho-benzene type general unsaturated polyester resin, has medium viscosity and medium reactivity, and can uniformly mix the curing agent, the accelerator, the metal-coated glass fiber and the conductive metal-coated hollow glass bead in the liquid resin, so that the reaction of the conductive glass fiber reinforced plastic is uniform in the preparation process, the energy consumption of the conductive glass fiber reinforced plastic in the preparation process can be reduced, and the curing agent, the accelerator and the conductive metal-coated glass fiber can be mixed in the liquid resin at normal temperature without a heating process. The reaction rate of the conductive glass fiber reinforced plastic during preparation can be improved through the accelerant, and the effect of enabling the curing agent to accelerate the curing of the conductive glass fiber reinforced plastic can be achieved when the dosage of the accelerant is small.
Preferably, the conductive glass fiber reinforced plastic is a chopped glass fiber, and the length of the chopped glass fiber is 10 ± 1 mm.
The length of the fibers is also a very critical indicator. When the length of the fiber is too long, on one hand, the fiber is not well dispersed in the matrix material, and the formed conductive network is not compact, so that the conductive performance and the comprehensive mechanical property of the product are influenced. When the length of the fiber is too short, it is also difficult to form a conductive network overlapping each other, and its conductive performance is poor. Preferably, when the fiber length is cut into chopped fibers with the length of 10 +/-1 mm, the conductivity and the comprehensive mechanical property are best.
Preferably, the conductive glass fiber reinforced plastic is 25 parts of the total amount of the metal-coated glass fiber and the non-coated glass fiber.
The invention also provides a preparation method of the conductive glass fiber reinforced plastic plate, which comprises the following steps:
1) preparing materials:
weighing metal-coated glass fibers and non-coated glass fibers, and cutting the metal-coated glass fibers and the non-coated glass fibers into short fibers for later use;
weighing hollow glass microspheres of carbon fibers and nickel-plated copper alloy for later use;
weighing resin, a curing agent and an accelerant, and uniformly mixing to obtain a resin mixed solution;
adding the chopped fibers, the carbon fibers and the hollow glass beads of the nickel-plated copper alloy into the resin mixed solution, and uniformly stirring to obtain a mixture;
2) molding:
coating mold stripping wax on the mold, and preheating;
adding the mixture into the mold, closing the mold, pressurizing, heating and preserving heat according to preset parameters;
and cooling and demolding to obtain the conductive glass fiber reinforced plastic plate.
Before preheating the mould, the mould is coated with mould release wax, so that the prepared and molded conductive glass fiber reinforced plastic plate can fall off from the mould conveniently.
And when the die is pressurized and heated, closing and pressurizing by using a hydraulic machine, wherein the closing and pressurizing pressure of the hydraulic machine is adjusted according to the design requirement of the product.
The invention also provides the conductive glass fiber reinforced plastic plate prepared by the method.
Generally, the thickness of the conductive glass fiber reinforced plastic sheet of the present invention is in the order of centimeters.
In the technical scheme of the invention, the heat preservation temperature and time are related to the type of the curing agent, the curing agent does not play a role when the temperature is too high or too low, and the product cannot be cured.
The conductive glass fiber reinforced plastic prepared by the technical scheme has excellent mechanical property, and the tensile strength of the conductive glass fiber reinforced plastic is greater than 26 Mpa; furthermore, the tensile strength is more than 28 MPa; furthermore, the tensile strength is more than 30 Mpa; furthermore, the tensile strength is more than 32 MPa. Meanwhile, the conductivity of the glass fiber reinforced plastic can be effectively improved, and the surface resistance of the glass fiber reinforced plastic is less than 0.3 omega; further, the surface resistance is less than 0.2 Ω; further, the surface resistance thereof is less than 0.1 Ω. Based on the very low surface resistance, the shielding effectiveness of the conductive glass fiber reinforced plastic prepared by the technical scheme of the invention is more than 19 dB; further, the shielding effectiveness is more than 25 dB; furthermore, the shielding effectiveness is greater than 30 dB.
The shielding effectiveness is better when the glass fiber plated with nickel and/or copper is used as the glass fiber plated with metal in the embodiment.
The following is a more detailed description of the present invention.
Example 1
Firstly, proportioning by mass
a. Weighing 100 parts of 191 resin, 2 parts of curing agent and 1 part of accelerator, and uniformly mixing to obtain a resin mixed solution for later use;
b. in the resin mixed solution, the total amount of the glass fiber is 25 parts, wherein 15 parts of short-cut aluminized glass fiber and 10 parts of short-cut common glass fiber are used; all the fibers are chopped into fiber sections with the length of 10 mm; the using amount of the carbon fiber is 5 parts;
c. weighing 5 parts of hollow glass beads of the nickel-plated copper alloy, wherein the particle size is 40 mu m; the plated metal is nickel-copper alloy;
d. b and c are added into a, and the mixture is uniformly mixed to obtain a mixture for later use;
secondly, a plate preparation step
Coating mold release wax on a mold (200mm multiplied by 10 mm), and preheating to 60 ℃;
adding the required amount of mixed solution into a mould;
thirdly, closing the die by using a hydraulic press, pressurizing by 10Mpa and preserving heat for 10 minutes;
fourthly, after the heat preservation is finished, cooling and demoulding are carried out, and the product is obtained.
Third, performance test
And testing the surface resistance, the shielding effectiveness and the tensile strength of the conductive glass fiber reinforced plastic plate according to a conventional detection method. The test results are shown in table 1.
Examples 2 to 7
The manufacturing process and performance testing were the same as in example 1, and the compounding data and test results are shown in Table 1.
Comparative examples 1 to 6
The manufacturing process and performance test were the same as in example 1, and the compounding data and test results are shown in Table 1.
TABLE 1 formulation data of examples and comparative examples, parts by mass
Surface resistivity refers to the ratio of the dc voltage drop per unit length over the surface to the current flowing per unit width. The uncoated glass fiber contained in the conductive glass fiber reinforced plastic can ensure the strength of the conductive glass fiber reinforced plastic; the conductive glass fiber/carbon fiber composite material comprises metal-plated glass fibers, carbon fibers and hollow glass beads plated with conductive metal, the fibers are arranged in an amorphous mode, the fibers are mutually overlapped to form a conductive network, and the hollow glass beads plated with the conductive metal are spread and filled in the conductive network formed by the metal-plated glass fibers and the carbon fibers, so that the conductive performance of the product is improved. The metal-plated glass fiber is not exposed in air, so that the metal-plated glass fiber can not be oxidized, the conductive glass fiber reinforced plastic can not be corroded, and the service life of the conductive glass fiber reinforced plastic is prolonged.
As can be seen from the above test data, the technical solutions of embodiments 1 to 7 of the present invention have very low surface resistance, which can reach 10-1～10-2And (4) stages. In comparative examples 1 to 3, the metals plated on the surfaces of the hollow glass beads were nickel, copper and aluminum, and as can be seen from the test data, the surface resistance thereof was 100Stage, even 101Level, which shows that when the metal plated on the surface of the hollow glass microsphere is not appropriate, the surface resistance is higher; further, in comparative examples 4 to 6, they are notWhen the hollow glass microballoon plated with the conductive metal is added or the metal-plated glass fiber is not added at the same time when the hollow glass microballoon plated with the conductive metal is added, the prepared product has almost no conductive performance, and the value of the surface resistance exceeds the range. As can be seen from the test data, in the technical scheme of the invention, the product has the conductivity and the surface resistance can reach 10 when and only when the product simultaneously contains the hollow glass beads plated with the conductive metal and the metal-plated glass fibers-1～10-2And (4) stages.
The shielding effectiveness is generally classified into the following classes: 0-10 dB is basically no shielding effect, 10-30 dB is medium shielding effect, 30-60 dB shielding effect is good, and more than 60dB is excellent shielding effect. Most of the shielding effectiveness currently used is generally at a moderate level of shielding effectiveness.
According to the shielding effectiveness division standard and the performance test data, the conductive glass fiber reinforced plastics prepared in the embodiments 1, 2, 5, 6 or 7 of the invention can achieve medium shielding efficiency, and the conductive glass fiber reinforced plastics prepared in the embodiments 3 and 4 of the invention can achieve better shielding effect.
Furthermore, when the nickel-plated and/or copper-plated conductive fibers are used in the embodiment of the invention, the shielding effectiveness of the prepared conductive glass fiber reinforced plastics can reach a better level.
The features of the invention claimed and/or described in the specification may be combined, and are not limited to the combinations set forth in the claims by the recitations therein. The technical solutions obtained by combining the technical features in the claims and/or the specification also belong to the scope of the present invention.
Claims (8)
1. The conductive glass fiber reinforced plastic comprises a base material and metal-plated glass fibers and is characterized by comprising hollow glass beads plated with nickel-copper alloy; it also comprises non-coated glass fiber and carbon fiber; wherein, by mass portion, it includes: 103 parts of a base material, 15-20 parts of plated metal glass fiber, 5-10 parts of non-plated glass fiber, 5-10 parts of carbon fiber and 5-10 parts of nickel-copper alloy plated hollow glass beads.
2. The conductive glass reinforced plastic according to claim 1, wherein the hollow glass microspheres of the nickel-plated copper alloy have a particle size of 40-70 μm.
3. The conductive glass reinforced plastic according to claim 1, wherein the hollow glass microspheres of the nickel-plated copper alloy have a particle size of 50 ± 5 μm.
4. The conductive glass fiber reinforced plastic of claim 3, wherein the matrix material is prepared by chemically reacting 100 parts of resin, 2 parts of curing agent and 1 part of accelerator.
5. The electrically conductive glass fiber reinforced plastic of claim 1, wherein the metallized glass fiber and the non-coated glass fiber are chopped fibers having a length of 10 ± 1 mm.
6. The electrically conductive glass fiber reinforced plastic of claim 1, wherein the total amount of the metallized glass fibers and the uncoated glass fibers is 25 parts.
7. The preparation method of the conductive glass fiber reinforced plastic plate is characterized by comprising the following steps:
1) preparing materials:
weighing metal-coated glass fibers and non-coated glass fibers, and cutting the metal-coated glass fibers and the non-coated glass fibers into short fibers for later use;
weighing hollow glass microspheres of carbon fibers and nickel-plated copper alloy for later use;
weighing resin, a curing agent and an accelerant, and uniformly mixing to obtain a resin mixed solution;
adding the chopped fibers, the carbon fibers and the hollow glass beads of the nickel-plated copper alloy into the resin mixed solution, and uniformly stirring to obtain a mixture;
2) molding:
coating mold stripping wax on the mold, and preheating;
adding the mixture into the mold, closing the mold, pressurizing, heating and preserving heat according to preset parameters;
and cooling and demolding to obtain the conductive glass fiber reinforced plastic plate.
8. An electrically conductive sheet of glass fiber reinforced plastic prepared according to the method of claim 7.
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