Thermoplastic composite structural member with electromagnetic shielding function and manufacturing method

Abstract

The invention discloses a thermoplastic composite structural member with an electromagnetic shielding function and a preparation method. The thermoplastic composite structural member comprises a shielding layer, a resin base material layer and at least one reinforced base material layer, the reinforced base material layer comprises at least one or a combination of carbon fibers, glass fibers, basalt and aramid fibers, the resin base material layer comprises at least one or a combination of PA66, PPS, PC, PEEK, PEKK, PP and PA, and at least part of the resin base material layer permeates into the reinforced base material layer. By means of the design, the light weight is achieved, and meanwhile the requirement for electromagnetic shielding can be met within the electromagnetic wave range of 2 Hz-2. 5GHz.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermoplastic composite materials, in particular to a thermoplastic composite structure with electromagnetic shielding function and a manufacturing method. BACKGROUND

[0002] Lightweight new materials are the key to the lightweight of new energy vehicles. Aluminum magnesium alloy is a common lightweight metal material. Compared with steel alloy, it has the advantages of low density, high lightness, high elasticity, high impact resistance, easy coloring, etc. However, compared with composite materials, its density is heavier, so composite materials are more and more used in new energy vehicles to reduce the weight of parts and meet the requirements of recycling. However, due to the poor shielding effectiveness of thermoplastic composite materials, simple injection molding of parts cannot meet the shielding effectiveness on the one hand, and the physical properties are also poor on the other hand. This limits its application in three-electricity control or engine electronic control system. At present, the shell containing three-electricity or the shell containing engine electronic control system in new energy vehicles all use metal cover plates such as pure aluminum sheet metal or pure magnesium aluminum alloy. The strength of this type of cover plate is low, and if the strength is improved, the weight will increase. Its electromagnetic protection performance is general, and the weight is heavy, which affects the endurance of the vehicle. SUMMARY

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present application is to provide a thermoplastic composite structure with electromagnetic shielding function (with shielding structure), which can be used in new energy vehicles to reduce the weight of parts while meeting the requirements of electromagnetic shielding.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] A thermoplastic composite structure with electromagnetic shielding function, comprising,

[0006] a shielding layer, a resin matrix layer and at least one reinforcing matrix layer, and the reinforcing matrix layer comprises at least one of carbon fiber, glass fiber, basalt and aramid fiber or a combination thereof,

[0007] The resin matrix layer comprises at least one of PA66, PPS, PC, PEEK, PEKK, PP and PA or a combination thereof, which penetrates at least partially into the reinforcing matrix layer. Through such design, while achieving lightweight, it can meet the requirements of electromagnetic shielding (such as electromagnetic shielding effectiveness above 50dB) in the range of 2Hz-2.5GHz. The thermoplastic composite structure uses thermoplastic material which can be recycled and reused, playing a role in environmental friendliness, energy saving and environmental protection.

[0008] Preferably, the shielding layer is selected from one or a combination of copper mesh, nickel mesh, copper foil, nickel foil, shielding cloth, aluminum mesh, aluminum foil and shielding cloth.

[0009] Preferably, the copper mesh, nickel mesh or aluminum mesh has a gauge of 60-400, preferably, the gauge is 100-300 mesh.

[0010] Preferably, the copper foil, nickel foil, shielding cloth and aluminum foil have a thickness of 0.1-10mm, preferably, the thickness is 0.4mm-0.6mm.

[0011] Preferably, the shielding layer comprises a polymer resin, wherein an electrically conductive or magnetically conductive filler is mixed into the polymer resin, the filler comprising a carbon-based filler, a composite conductive filler or a metal filler.

[0012] Preferably, the carbon-based filler comprises one or a combination of carbon black, carbon fiber, graphene or carbon nanotube.

[0013] The metal filler comprises one or a combination of silver, copper, cobalt or nickel.

[0014] The composite conductive filler comprises one or a combination of metalized carbon fiber, nickel-coated carbon nanotube or silver-coated glass microbeads.

[0015] Preferably, the resin substrate layer is prepared from a thermoplastic resin, preferably, the resin substrate layer is prepared from continuous fibers.

[0016] Preferably, the resin substrate layer covers both sides of the reinforcing substrate layer.

[0017] The present application provides a method for manufacturing a thermoplastic composite structure, the method comprising the following steps:

[0018] The shielding layer, the resin substrate layer and the reinforcing substrate layer are introduced into a mold (e.g., an upper mold) in a predetermined stacking order, and the shielding layer is positioned at the top or bottom layer,

[0019] The mold (e.g., the upper mold) is closed and pressed onto the lower mold, and the mold is heated to a first predetermined temperature, pressurized to a first predetermined pressure, and held at temperature and pressure for a first predetermined time to obtain a thermoplastic composite structure.

[0020] Preferably, the reinforcing substrate layer is a continuous fiber, and the opposite sides of the continuous fiber are respectively laminated with a resin substrate layer,

[0021] After heating, the resin substrate layer is melted and infiltrated into the continuous fiber to obtain a thermoplastic composite structure. If the resin substrate layer comprises a thermoplastic resin, after heating, the resin substrate layer is melted and infiltrated into the continuous fiber to obtain a thermoplastic composite structure.

[0022] The shielding layer and the substrate layer are introduced into the preheated mold. The obtained thermoplastic composite structure not only reduces the weight, but also meets the requirements of electromagnetic shielding, and when used in new energy vehicles, it can reduce the weight of the vehicle body and improve the endurance of the vehicle.

[0023] Beneficial effects

[0024] The thermoplastic composite structure provided in the present application has a shielding layer, and the thermoplastic composite structure can be used in new energy vehicles to replace existing sheet metal parts to achieve lightweighting while meeting the requirement of electromagnetic shielding, and can also reduce the thickness of the sheet material. The thermoplastic composite structure can be recycled and reused (unlike thermosetting materials which are used only once), which plays a role in environmental friendliness and energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are used to provide an understanding of the technical solutions of the present disclosure, and constitute a part of the specification, and are used together with the embodiments of the present disclosure to explain the technical solutions of the present disclosure, and do not constitute a limitation on the technical solutions of the present disclosure. The shapes and sizes of the components in the drawings do not reflect the true proportions, and the purpose is only to schematically illustrate the content of the present application.

[0026] Figure 1 A structural schematic diagram of the thermoplastic composite structure provided in the embodiments of the present application is shown in the figure.

[0027] Figures 2-9 A test result diagram of the shielding effect of the embodiments of the present application is shown in the figure.

[0028] Figure 10 A preparation flowchart of the thermoplastic composite structure provided in the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0029] The above solutions will be further described in combination with specific embodiments. It should be understood that these embodiments are used to illustrate but not to limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not mentioned are usually the conditions in the conventional experiments.

[0030] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms "first", "second", and similar terms used in the present disclosure do not necessarily denote any ordinal, quantity or importance, but are used to distinguish different components. The terms "comprises", "comprising", "includes", "including" and the like can mean the presence of a stated element or item but do not preclude the presence or addition of other elements or items. The terms "connected", "coupled" or the like can not necessarily denote a physical or mechanical connection or coupling, but can include an electrical connection or coupling, whether direct or indirect. In this document, "electrically connected" includes the case where the constituent elements are connected together through an element having a certain electrical effect. The element having a certain electrical effect is not particularly limited as long as it can perform the transmission of an electrical signal between the constituent elements to be connected. The element having a certain electrical effect may, for example, be an electrode or a wiring, or a switching element such as a transistor, or another functional element such as a resistor, an inductor, or a capacitor, etc. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0031] In the present application, the orientation or positional relationship indicated by the terms "up", "down", "inner", "middle", and the like is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] With the development of new energy vehicles and aerospace technologies, the introduction of long-lasting, environmentally friendly functions, etc. requires lightweight. Thus, thermoplastic composites are introduced into the fields of new energy vehicles and aerospace, etc. Taking new energy vehicles as an example, at present, thermoplastic composites are mainly applied to non-load-bearing parts or interior parts, while they are mainly made of metal materials by hot stamping in the application of vehicle load-bearing exterior parts (such as engine cover plates, electric control box cover plates, etc.), which limits the space for lightweight.

[0033] To this end, the applicant has made improvements and proposes a thermoplastic composite structure with electromagnetic shielding function (hereinafter referred to as thermoplastic composite structure), which is based on continuous fiber reinforced thermoplastic material, which realizes lightweight while meeting the requirements of electromagnetic shielding. Generally, electromagnetic interference is mainly concentrated in the frequency range of 10.0KHz-40.0GHz. When electromagnetic signals propagate, if external interference signals are coupled to the receiving or control signal channel, signal jump and waveform distortion will occur, and electronic equipment will not be able to distinguish normal signals, resulting in signal real-time failure and information reliability decline, degrading transmission channels and device performance, and serious electromagnetic wave interference makes the entire electronic system paralyzed.

[0034] The thermoplastic composite structure can achieve electromagnetic shielding effectiveness in the electromagnetic wave range of 2Hz-2.5GHz to meet the requirements of electromagnetic shielding. For example, the electromagnetic shielding effectiveness in the electromagnetic wave range of 20Hz-30MHz reaches more than 50dB, meeting the requirements of electromagnetic shielding.

[0035] Next, the thermoplastic composite structure proposed in the embodiments of the present application will be described in conjunction with Figure 1 The thermoplastic composite structure is applied to the motor end cover or the electric control end cover of a new energy vehicle. The thermoplastic composite structure includes a shielding layer, a resin substrate layer, and at least one reinforcing substrate layer, and the reinforcing substrate layer includes at least one of carbon fiber, glass fiber, basalt, and aramid fiber or a combination thereof.

[0036] The thermoplastic composite structure includes a shielding layer 20, a reinforcing substrate layer 10, and a resin substrate layer 11. The resin substrate layer 11 and the reinforcing substrate layer 10 (such as continuous fiber fabric) are stacked, and the shielding layer 20 is laid on one side of the reinforcing substrate layer 10. By setting the shielding layer, electromagnetic interference is reduced. It can be used in occasions that require electromagnetic signal shielding, such as new energy vehicles, high-speed trains, relay satellites, and airplanes, etc. Before hot pressing and compounding, the shielding layer 20, the reinforcing substrate layer 10, and the resin substrate layer 11 are stacked / laid, and after hot pressing and compounding, part of the resin substrate layer penetrates into the reinforcing substrate layer. Preferably, at least one resin substrate layer covers the shielding layer, so that part of the resin substrate layer penetrates into the reinforcing substrate layer after hot pressing and compounding, so that the shielding layer and the reinforcing substrate layer are reliably connected. This way simplifies the manufacturing process of the thermoplastic composite structure and can realize one-step forming.

[0037] The shielding layer 20 can be selected from one or a combination of copper mesh, nickel mesh, copper foil, nickel foil, shielding cloth, aluminum mesh, aluminum foil, and shielding cloth. In other embodiments, the shielding layer can be obtained by adding conductive or magnetic filler to the polymer resin through methods such as blending, co-precipitation, etc., or by depositing the filler on the surface of the fiber fabric through methods such as dipping, spraying, vacuum-assisted filtration, etc. The filler can be carbon-based fillers (including carbon black, carbon fibers, graphene, carbon nanotubes, etc.), metal fillers (including silver, copper, cobalt, nickel, etc.), composite conductive fillers (metalized carbon fibers, nickel-coated carbon nanotubes, silver-coated glass beads, etc.), etc. In actual applications, the shielding layer is one layer, and the shielding layer is located on the inner side or the outer side of the cover plate, such as the shielding layer in the motor end cover being located on the side of the base layer close to the motor, and the electric control end cover being located on the layer of the base layer close to the electric control. At the same time, the number of layers of the base layer and the shielding effect required by the cover plate can also be considered.

[0038] In an embodiment, the shielding layer is selected from one or a combination of copper mesh, nickel mesh, copper foil, nickel foil, shielding cloth, aluminum mesh, aluminum foil, and shielding cloth. When the shielding layer is copper foil, nickel foil, shielding cloth, and aluminum foil, the thickness of the copper foil, nickel foil, shielding cloth, and aluminum foil is between 0.1-10mm, preferably between 0.4mm-0.6mm. When the shielding layer is copper mesh, nickel mesh, or aluminum mesh, the specification of the copper mesh, nickel mesh, or aluminum mesh is between 60-400 mesh, preferably between 100-300 mesh. Here, the specification specifically refers to the mesh number of the copper mesh, nickel mesh, or aluminum mesh, i.e., the mesh number of the copper mesh, nickel mesh, or aluminum mesh is between 60-400, and the wire diameter of the copper mesh, nickel mesh, or aluminum mesh is between 0.2-0.6mm, preferably the mesh number of the copper mesh, nickel mesh, or aluminum mesh is 210 mesh, and the wire diameter is 0.3mm. This design further reduces the weight of the shielding layer, thereby reducing the weight of the automobile electric control cover plate, and further reducing the weight of the vehicle body, thereby improving the endurance of the vehicle. In the embodiment, the wire diameter of the copper mesh, nickel mesh, or aluminum mesh is 0.3mm, which further reduces the thickness of the shielding layer, thereby reducing the thickness of the entire automobile electric control cover plate. Further, the mesh holes in the copper mesh, nickel mesh, or aluminum mesh are arranged in an array on the shielding layer, or multiple mesh holes are arranged in a spiral on the shielding layer. Both the two arrangement methods have high uniformity, thereby making the connection between the shielding layer and the base layer more secure.

[0039] In one embodiment, the resin base layer comprises a thermoplastic resin, which comprises at least one of PA66 (polyamide 66), PPS (polyphenylene sulfide), PC (polycarbonate), PEEK (polyether ether ketone), PEKK (polyaryletherketone), PP (polypropylene), and PA (polyamide, also known as nylon). Preferably, the thermoplastic resin in the present application is selected from PA66. The continuous fiber fabric comprises at least one of continuous carbon fiber fabric, continuous glass fiber fabric, continuous basalt fabric, and continuous aramid fiber fabric. In the present application, the continuous fiber fabric is used as a reinforcing body. The continuous fiber fabric is made of fibers, which comprise at least one of carbon fibers, glass fibers, basalt fibers, and aramid fibers. The glass fiber yarn, carbon fiber yarn, aramid fiber yarn, and basalt fiber are woven into a multi-directional and multi-angle fiber fabric by a weaving device. Preferably, the continuous fiber fabric is a continuous glass fiber fabric.

[0040] Next, the manufacturing method of the thermoplastic composite structure described above (hereinafter referred to as the method) is described. The method comprises the following steps:

[0041] The shielding layer, the resin base layer (such as thermoplastic resin particles), and the reinforcing base layer are introduced into the mold in a predetermined stacking order, and the shielding layer is positioned at the top or bottom layer.

[0042] The mold is closed, and the mold is heated to a first predetermined temperature, pressurized to a first predetermined pressure, and kept at temperature and pressure for a first predetermined time to obtain the thermoplastic composite structure. The method is formed by one-step molding (which saves subsequent cutting, edge removal, and other processes). In the method, the resin base layer (such as thermoplastic resin particles) after heating is infiltrated into the reinforcing base layer (such as continuous fibers / fabric). Preferably, the reinforcing base layer is continuous fibers, and the opposite sides of the continuous fibers are respectively overlaid with the base layer made of thermoplastic resin. After heating, the base layer is infiltrated into the continuous fibers. The thermoplastic composite structure obtained in this way realizes lightweight while meeting the requirements of electromagnetic shielding. It can be used in new energy vehicles, high-speed trains, relay satellites, and airplanes, etc. This way, the application range of thermoplastic (carbon fiber) composites is widened.

[0043] In one embodiment, the method further comprises preheating the mold, which shortens the heating and pressurizing time and improves the production efficiency.

[0044] In one embodiment, the method further comprises laying and laminating the multiple layers of thermoplastic non-woven fabric and the multiple layers of continuous fiber fabric in a predetermined layering manner.

[0045] In the embodiment, the multilayer thermoplastic nonwoven fabric and the multilayer continuous fiber fabric are laminated on the shielding layer; that is, in a specific application, the inner surface of the cover plate is the shielding layer, and such a design is beneficial to enhancing the shielding effect of the cover plate. The multilayer thermoplastic nonwoven fabric and the multilayer continuous fiber fabric are laid up in a laying angle [±45° / 0° / 90° / ±45°] laying manner. By laying up the thermoplastic nonwoven fabric and the continuous fiber fabric in different directions, the cover plate for a new energy vehicle can bear forces from different directions, and the strength and rigidity of the new energy vehicle are further enhanced. The thermoplastic composite structure can also reduce the thickness of the cover plate, and has high mechanical strength, and meets the occasions for new energy vehicles.

[0046] In the embodiment, the mold forming step specifically comprises:

[0047] The mold is preheated to 120-100℃;

[0048] Preferably, a mold release agent can be sprayed on the surface of the mold, which is beneficial to the demolding of the subsequent product.

[0049] It should be noted that the preheating temperature required is different for different types of thermoplastic resins. For example, when the thermoplastic resin is PA66, the mold needs to be preheated to 100℃, and when the thermoplastic resin is PPS, the mold needs to be preheated to 120℃.

[0050] The shielding layer and the base layer are introduced into the lower film of the preheated mold according to the preset stacking order;

[0051] Here, the shielding layer is attached to the lower mold of the mold, and the base layer is arranged on the side of the shielding layer away from the lower mold of the mold.

[0052] Close the mold, heat the mold to 200-320℃, and pressurize to 10MPa, and keep the temperature and pressure for 60-100s;

[0053] It should be noted that the temperature required is different for different types of thermoplastic resins. For example, when the thermoplastic resin is PA66, the mold needs to be heated to 200℃, and when the thermoplastic resin is PPS, the mold needs to be heated to 320℃.

[0054] Cooling the mold and opening the mold to take out the product. This method simplifies the manufacturing process of the thermoplastic composite structure, and combined with a matched mold, one-step forming can be realized.

[0055] Next, the shielding effect of the embodiment is verified by experiments: the EMC test method is according to the GB / T30142-2013 flange coaxial device method.

[0056]

[0057] From the test results,Figure 2 The shielding layer in the thermoplastic composite structure is a copper mesh (100-300 mesh, thickness 0.2-0.6 mm), which is made of Figure 2 It can be seen that the electromagnetic shielding effectiveness of the thermoplastic composite structure in the electromagnetic wave range of 20 Hz-30 MHz is above 55.6 dB.

[0058] Figure 3 The shielding layer in the thermoplastic composite structure is a shielding cloth (thickness 0.2-0.6 mm), which is made of Figure 3 It can be seen that the electromagnetic shielding effectiveness of the thermoplastic composite structure in the electromagnetic wave range of 20 Hz-30 MHz is above 50 dB.

[0059] Figure 4 The shielding layer in the thermoplastic composite structure is a combination of copper mesh and shielding cloth (the aperture of the copper mesh is 190-210 mesh, the thickness is 0.4-0.6 mm, and the thickness of the shielding cloth is 0.2-0.6 mm), which is made of Figure 4 It can be seen that the electromagnetic shielding effectiveness of the thermoplastic composite structure in the electromagnetic wave range of 100 K-2 GHZ is above 50 dB, and the electromagnetic shielding effectiveness in the electromagnetic wave range of 20 Hz-30 MHz is above 53.9 dB.

[0060] Figure 5 The shielding layer in the thermoplastic composite structure is a combination of copper mesh and nickel sheet, wherein the aperture of the copper mesh is 100-300 mesh, the thickness is 0.4-0.6 mm, and the nickel sheet is 0.2-0.6 mm, which is made of Figure 5 The electromagnetic shielding effectiveness of the thermoplastic composite structure in the electromagnetic wave range of 20 Hz-30 MHz is above 55.7 dB.

[0061] Figure 6 The shielding layer in the thermoplastic composite structure is a combination of copper mesh and nickel mesh, wherein the aperture of the copper mesh / nickel mesh is 190-210 mesh, the thickness is 0.4-0.6 mm, and the nickel sheet is 0.2-0.6 mm, which is made of Figure 6 The electromagnetic shielding effectiveness of the thermoplastic composite structure in the electromagnetic wave range of 20 Hz-30 MHz is above 57.7 dB.

[0062] Figure 7 The shielding layer in the thermoplastic composite structure is a nickel sheet, wherein the nickel sheet is 0.2-0.6 mm, which is made of Figure 7 It can be seen that the electromagnetic shielding effectiveness of the thermoplastic composite structure in the electromagnetic wave range of 20 Hz-30 MHz is above 75.2 dB.

[0063] Figure 8The shielding layer in the thermoplastic composite structure is a nickel mesh, wherein the mesh size of the nickel mesh is between 190-210 mesh, and the thickness is between 0.4-0.6 mm, and the nickel mesh is made of Figure 8 The electromagnetic shielding effectiveness of the thermoplastic composite structure is above 50 dB in the electromagnetic wave range of 20 Hz-30 MHz.

[0064] Figure 9 The shielding layer in the thermoplastic composite structure is a copper mesh, wherein the mesh size of the copper mesh is between 190-210 mesh, and the thickness is between 0.4-0.6 mm, and the copper mesh is made of Figure 9 The electromagnetic shielding effectiveness of the thermoplastic composite structure is above 51.2 dB in the electromagnetic wave range of 20 Hz-30 MHz.

[0065] The shielding layer in the thermoplastic composite structure is a nickel mesh, wherein the mesh size of the nickel mesh is between 190-210 mesh, and the thickness is between 0.4-0.6 mm, and the nickel mesh is made of Figures 2-9 It can be seen that the electromagnetic shielding effectiveness of the thermoplastic composite structure is above 50 dB in the electromagnetic wave range of 20 Hz-30 MHz. When the shielding layer of the thermoplastic composite structure is a nickel sheet, the electromagnetic shielding effectiveness of the thermoplastic composite structure is above 75.2 dB.

[0066] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent conversion or modification made in the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A thermoplastic composite structural component with electromagnetic shielding function, characterized in that, include: The material comprises a shielding layer, a resin substrate layer, and at least one reinforcing substrate layer, wherein the reinforcing substrate layer comprises at least one or a combination of carbon fiber, glass fiber, basalt, and aramid fiber. The resin substrate layer includes at least one or a combination of PA66, PPS, PC, PEEK, PEKK, PP and PA, and the resin substrate layer at least partially penetrates into the reinforcing substrate layer.

2. The thermoplastic composite structural component as described in claim 1, characterized in that, The shielding layer is selected from one or a combination of copper mesh, nickel mesh, copper foil, nickel foil, shielding cloth, aluminum mesh, aluminum foil, and shielding cloth.

3. The thermoplastic composite structural component as described in claim 2, characterized in that, The specifications of the copper mesh, nickel mesh, or aluminum mesh are between 60 and 400. Preferably, the copper mesh, nickel mesh, or aluminum mesh has a mesh size between 100 and 300.

4. The thermoplastic composite structural component as described in claim 2, characterized in that, The thickness of the copper foil, nickel foil, shielding cloth, and aluminum foil is between 0.1 and 10 mm. Preferably, the thicknesses of the copper foil, nickel foil, shielding cloth, and aluminum foil are between 0.4 mm and 0.6 mm.

5. The thermoplastic composite structural component as described in claim 1, characterized in that, The shielding layer comprises a polymer resin, wherein conductive or magnetic fillers are mixed in, including carbon-based fillers, composite conductive fillers, or metal fillers.

6. The thermoplastic composite structural component as described in claim 5, characterized in that, The carbon-based filler includes one or a combination of carbon black, carbon fiber, graphene, or carbon nanotubes. The metal filler includes one or a combination of silver, copper, cobalt, or nickel; The composite conductive filler includes one or a combination of metallized carbon fiber, nickel-plated carbon nanotubes, or silver-plated glass microspheres.

7. The thermoplastic composite structural component as described in claim 1, characterized in that, The resin substrate layer is made of thermoplastic resin; Preferably, the resin substrate layer is made of continuous fibers.

8. The thermoplastic composite structural component as described in claim 1, characterized in that, The resin substrate layer covers both sides of the reinforcing substrate layer.

9. A method for manufacturing a thermoplastic composite structural component, characterized in that, The method includes: The shielding layer, resin substrate layer, and reinforcing substrate layer are introduced into the mold in a preset stacking order, with the shielding layer located at the top or bottom layer. The mold is closed, and the mold is heated to a first preset temperature and pressurized to a first preset pressure, and kept at the temperature and pressure for a first preset time to obtain a thermoplastic composite structural part.

10. The method for manufacturing a thermoplastic composite structural component as described in claim 9, characterized in that, The reinforcing substrate layer is a continuous fiber, and resin substrate layers are respectively laid on its opposite sides. After heating, the resin substrate layers melt and impregnate the continuous fibers.

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