Three-dimensional fiber with electromagnetic interference shielding effect

Abstract

The utility model discloses a three-dimensional fiber with an electromagnetic interference shielding effect, which comprises a polymer fiber polymerization material forming an outer surface; and the conductive layer is attached to the outer surface of the polymer fiber polymerization material, and the conductive layer contains metal particles. The purposes of environmental protection and circular economy are achieved by means of the characteristics of non-toxic process and full recovery of the polymer fiber polymer material; the conductive layer is attached to the outer surface of the polymer fiber polymerization material, so that the conductive layer has good conductive performance, and the electromagnetic interference shielding effect is improved; by means of the good elastic deformation effect of the polymer fiber polymer material, the problem that the elastic deformation of the three-dimensional fiber with the electromagnetic interference shielding effect is poor can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electromagnetic interference shielding technology, its outside surface pastes and covers the conductive layer in the high molecular fiber polymer material, constitutes a three-dimensional fiber with electromagnetic interference shielding effect. BACKGROUND

[0002] The known three-dimensional fiber with electromagnetic interference shielding effect is a formed body coated by the lamination of conductive cloth and foam with hot melt adhesive film, and different sizes of conductive foam are made by introducing a mold, a forming mold and a shaping mold.

[0003] By the characteristics of the surface conductive cloth, electromagnetic wave shielding and conductive grounding functions can be effectively provided; the conductive foam is usually pasted and combined with the conductive adhesive tape on the grounding side of the mechanism body or electronic circuit, the conductive adhesive is coated on the bottom side of the conductive foam, and the conductive foam is pasted on the position of the mechanism body or the position where the short circuit effect is desired to be generated; then the return force of the compressed foam is used to apply force to the reverse end point, so as to generate conductive effect and area shielding between the mechanism bodies.

[0004] However, the foam is not easy to decompose and is usually incinerated, which is easy to produce air pollutants and even toxic gases such as hydrogen cyanide (HCN). In addition, if a chlorine-containing blowing agent is used when the foam is foamed, dioxin, a century-old poison, will be produced when the combustion is incomplete. In addition, the elasticity of the foam needs to be improved, and it is also difficult to make the conductive cloth adhere to the outer surface of the foam. Therefore, the known three-dimensional fiber with electromagnetic interference shielding effect needs to be improved. CONTENT OF THE UTILITY MODEL

[0005] Now, the present utility model inventors have found that the known three-dimensional fiber with electromagnetic interference shielding effect still has many defects in actual implementation and use, and thus, based on their rich professional knowledge and many years of practical experience, they have made improvements and thus invented the present utility model.

[0006] The utility model aims to provide a three-dimensional fiber with electromagnetic interference shielding effect, which pastes and covers a conductive layer on the outer surface of a high molecular fiber polymer material, the high molecular fiber polymer material has a non-toxic process and a full recyclable feature, achieving the goals of environmental protection and circular economy, and the high molecular fiber polymer material has a better elastic deformation effect, which can solve the problem of poor elastic deformation of the three-dimensional fiber with electromagnetic interference shielding effect.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a three-dimensional fiber with electromagnetic interference shielding effect, which comprises a high molecular fiber polymer material forming an outer surface, and a conductive layer pasted on the outer surface of the high molecular fiber polymer material, the conductive layer containing metal particles.

[0008] The polymer fiber polymer material can reduce pollution and is more environmentally friendly in the manufacturing and recycling processes. The polymer fiber polymer material structure can improve the elastic deformation capability, and the conductive layer is easily fixed to the surface of the polymer fiber polymer material. The elastic deformation of the polymer fiber polymer material can increase the buffer of the conductive layer when subjected to external pressure or friction, thereby improving the service life of the product, promoting the conductive ability of the conductive layer, and improving the electromagnetic interference shielding performance.

[0009] In an embodiment of the present application, the polymer fiber polymer material is a straight cotton, which has a non-toxic process and a full recycling feature, achieving the purpose of environmental protection and circular economy.

[0010] In an embodiment of the present application, the three-dimensional fiber with electromagnetic interference shielding effect further comprises a sticky layer, which is attached to the outside of the conductive layer, thereby making the three-dimensional fiber with electromagnetic interference shielding effect convenient to attach to an object.

[0011] In an embodiment of the present application, the thickness of the conductive layer is 0.01mm-0.5mm, thereby having appropriate conductive ability and electromagnetic shielding effect.

[0012] In an embodiment of the present application, the resistance value of the conductive layer is 10 -4 -10 3 Ω / cm, thereby having appropriate conductive ability and electromagnetic shielding effect.

[0013] In an embodiment of the present application, the metal particles of the conductive layer are selected to have a particle size of 0.5-20μm, thereby having appropriate conductive ability and electromagnetic shielding effect.

[0014] In an embodiment of the present application, the polymer fiber polymer material is at least one of a strip-shaped body, a block-shaped body, and a sheet-shaped body or a combination thereof, thereby being more suitable for various parts of objects that require electromagnetic interference shielding.

[0015] In an embodiment of the present application, the cross section of the polymer fiber polymer material is at least one of a geometric shape and an irregular shape or a combination thereof, thereby being more suitable for the shape of various objects that require electromagnetic interference shielding.

[0016] The detailed structure, characteristics, assembly or use of the three-dimensional fiber with electromagnetic interference shielding effect provided by the present application will be described in the following detailed description of the embodiments. However, those skilled in the art should understand that the detailed description and the specific examples listed in the implementation of the present application are only used to illustrate the present application, and are not used to limit the scope of the claims of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A stereoscopic sectional view of a three-dimensional fiber with electromagnetic interference shielding effect according to a preferred embodiment of the present application.

[0018] Figure 2 A stereoscopic sectional view of another three-dimensional fiber with electromagnetic interference shielding effect according to a preferred embodiment of the present application.

[0019] In the drawings, reference numerals:

[0020] 1: three-dimensional fiber with electromagnetic interference shielding effect

[0021] 10: high molecular fiber polymer material

[0022] 11: outer surface

[0023] 20: conductive layer

[0024] 30: adhesive layer DETAILED DESCRIPTION

[0025] First of all, it is stated herein that in the entire specification, including the embodiments described below and the claims of the claims, the terms related to the direction are based on the direction in the drawings. Secondly, in the embodiments to be described below and the drawings, the same element number represents the same or similar element or structural feature.

[0026] Referring to Figure 1 , the three-dimensional fiber 1 with electromagnetic interference shielding effect according to a preferred embodiment of the present application includes a high molecular fiber polymer material 10 and a conductive layer 20. The high molecular fiber polymer material 10 has an outer surface 11, and the conductive layer 20 is attached to the outer surface 11 of the high molecular fiber polymer material 10.

[0027] The high molecular fiber polymer material 10 of the present embodiment is a square cross-sectional strip-shaped body, but the present application is not limited to a square cross-section, and can also be other various geometric shapes or irregular cross-sections. Furthermore, the high molecular fiber polymer material 10 of the present application is not limited to a uniform size or shape of the cross-section. The high molecular fiber polymer material 10 of the present application is not limited to a strip-shaped body, but can also be various geometric block-shaped bodies or various irregular block-shaped bodies.

[0028] The high molecular fiber polymer material is at least one of a strip-shaped body, a block-shaped body, and a sheet-shaped body, or a combination thereof, so that it can be more suitable for the parts of various objects that require electromagnetic interference shielding. The cross-section of the high molecular fiber polymer material is at least one of a geometric shape and an irregular shape, or a combination thereof, so that it can be more suitable for the shape of various objects that require electromagnetic interference shielding.

[0029] The high molecular fiber polymer material 10 of the present embodiment is a straight cotton, which is a brand new environmentally friendly non-woven structure with a strong three-dimensional structure.

[0030] The erect cotton is a high environmental protection product, does not use any chemical reagent, is a structure produced by physical technology, and thus does not pollute the environment and is convenient to manufacture.

[0031] The non-woven structure of the erect cotton is a vertical fiber web structure or a honeycomb fiber web structure, which is different from the parallel fiber web structure of other non-woven structures. The different laying manner forms a completely different structure. The vertical structure of the erect cotton makes the recovery rate reach more than 90%, and more than 20% of the weight can be saved compared with ordinary products. The erect cotton still has good rebound performance after being pressed, and the vertical web material can maintain its performance during use. In this regard, the pressure resistance and rebound performance can be better than that of the foam cotton.

[0032] The thickness of the conductive layer is 0.01-0.5 mm. If it is less than 0.01 mm, it is easy to break and the electromagnetic shielding effect is not good. If it is greater than 0.5 mm, it affects the elastic deformation.

[0033] The resistance value of the conductive layer is 10 -4 -10 3 Ω / cm, thereby more meeting the production needs and product applications. If the resistance value is greater than 10 3 Ω / cm, the conductive capacity is low, and the electromagnetic shielding effect is not good.

[0034] The conductive layer contains metal particles. The selected particle size of the metal particles is 0.5-20 μm, which is beneficial to uniform distribution, so as to provide better electromagnetic shielding effect. The material of the metal particles can be gold, silver, copper, nickel, tin, cobalt, aluminum, zinc and tungsten, etc.

[0035] As can be known from the above implementation description, compared with the prior art, the utility model has the following advantages, which achieve the purpose of the utility model, namely:

[0036] 1. The erect cotton is an environmental protection non-woven structure. Compared with the foam cotton used in the prior art, the erect cotton is less likely to be polluted during manufacturing, and compared with the foam cotton, the erect cotton is easier to achieve complete recycling effect during recycling.

[0037] 2. The erect cotton still has good rebound performance after long-term or repeated loading. The vertical web material can maintain its function during use, is light in weight, moderate in hardness, has high support and rebound performance and is not easy to collapse, and can effectively improve the service life of the product.

[0038] 3. The conductive layer 20 is attached to the outer surface of the erect cotton. When bent or deformed, the range of the conductive layer 20 is not reduced, good conductive capacity and electromagnetic shielding effect can be provided, and the erect cotton can be applied in the fields of EMI protection, police supplies, electronic equipment, intelligent clothing, aerospace technology, medical peripherals and server operation, etc.

[0039] The three-dimensional fiber 1 with electromagnetic interference shielding effect of another preferred embodiment of the present application, as shown in Figure 2 The difference is that it further comprises a sticking layer 30, which is attached to the conductive layer 20. In this way, the sticking layer 30 can provide the three-dimensional fiber 1 with electromagnetic interference shielding effect to be conveniently attached and fixed on the object, and the conductive layer 20 still maintains good electromagnetic interference shielding effect.

[0040] Finally, it must be noted again that the constituent elements disclosed in the foregoing embodiments of the present application are only for illustration and are not intended to limit the scope of the present application. Other equivalent elements or changes should also be covered by the scope of the claims of the present application.

[0041] Of course, the present application can also have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application. However, these corresponding changes and modifications should all belong to the protection scope of the claims of the present application.

Claims

1. A three-dimensional fiber having an electromagnetic interference shielding effect, characterized by comprising a core, a sheath, and a magnetic material. The electromagnetic interference shielding three-dimensional fiber comprises: a polymer fiber polymer material forming an outer surface; and a conductive layer attached to the outer surface of the polymer fiber polymer material, the conductive layer containing metal particles.

2. The three-dimensional fiber having an electromagnetic interference shielding effect according to claim 1, wherein The polymer fiber polymer material is straight cotton.

3. The three-dimensional fiber having an electromagnetic interference shielding effect according to claim 1, wherein Further comprising a sticky layer attached to the outer surface of the conductive layer, so that the three-dimensional fiber with electromagnetic interference shielding effect is attached to an object.

4. The three-dimensional fiber having an electromagnetic interference shielding effect according to claim 1, wherein The thickness of the conductive layer is 0.01mm-0.5mm.

5. The three-dimensional fiber having an electromagnetic interference shielding effect according to claim 1, wherein The electrically conductive layer has a resistance value of 10 -4 -10 3 Ω / cm.

6. The three-dimensional fiber having an electromagnetic interference shielding effect according to claim 1, wherein The particle size of the metal particles is 0.5-20μm.

7. The volumetric fiber having an electromagnetic interference shielding effect according to claim 1, wherein the conductive fiber is a carbon fiber. The polymer fiber polymer material is at least one of a strip, a block and a sheet or a combination thereof.

8. The volumetric fiber having an electromagnetic interference shielding effect according to claim 1, wherein, The cross section of the polymer fiber polymer material is at least one of a geometric shape and an irregular shape or a combination thereof. The cross section of the polymer fiber polymer material is at least one of a geometric shape and an irregular shape or a combination thereof.

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