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Electromagnetic shielding cable preparing method

An electromagnetic shielding and cable technology, applied in the field of electromagnetic shielding cable preparation, can solve the problems of poor cable shielding effect and reduce the weight of the cable, and achieve the effects of improving flexibility, simplifying production process and reducing overall weight.

Active Publication Date: 2017-12-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention The purpose of the present invention is to provide a method for preparing an electromagnetic shielding cable. The electromagnetic shielding cable prepared by this method has a good shielding function, so as to solve the problem that the current cable shielding effect is not good. Another purpose of the present invention is to Provide a new structure of electromagnetic shielding cable preparation method, which has the advantages of light weight and good flexibility, and can greatly reduce the weight of the cable

Method used

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preparation example Construction

[0034] A method for preparing an electromagnetic shielding cable, the electromagnetic shielding cable includes a conductive wire core and a coating layer, the coating layer includes two phases of an insulating phase and a conductive phase, and the insulating phase is made of silicone rubber-high temperature resistant silicate nanoparticles Composite material, the conductive phase of the cladding layer is made of silicone rubber-graphene composite material, the preparation method of the electromagnetic shielding cable comprises the following steps:

[0035] Step 1, material preparation, adding high temperature resistant silicate nanoparticles to sulfur-containing organic matter for surface modification; adding graphene oxide to sulfur-containing organic matter to modify the surface of graphene;

[0036] Step 2. Add the surface-modified high-temperature silicate nanoparticles into the silicone rubber according to the design requirements, and then mix the rubber on the mixer. Afte...

Embodiment 1

[0046] Such as figure 1 As shown, an electromagnetic shielding cable A includes a conductive core A1 and a coating layer A4 coated on the outside of the conductive core A1. The conductive core A1 and the coating layer A4 form a coaxial cable. The coating Layer A4 is a single-layer multi-phase structure. The cladding layer A4 includes an insulating phase A2 and a conductive phase A3 for electromagnetic shielding from the inside to the outside. The insulating phase A2 of the cladding layer A4 is made of silicone rubber-high temperature resistant silicate Made of nanoparticle composite material, the conductive phase A3 of the cladding layer A4 is made of silicone rubber-graphene composite material, high temperature resistant silicate nanoparticles and graphene are uniformly dispersed in the silicone rubber as the matrix material to form no physical Boundary single-layer structure.

[0047] The conductive core A1 may be formed by a single conductive core, or may be formed by inte...

Embodiment 2

[0051] see figure 2 and image 3 As shown, the cross-sectional schematic diagram of the electromagnetic shielding cable B disclosed in the second embodiment of the present invention is shown in C, which includes a plurality of conductive cores C1 (the figure shows seven conductive cores in total), and each conductive core C1 is covered A cladding layer C4, wherein the cladding layer C4 is composed of an insulating phase C2 and a conductive phase C3 as an electromagnetic shielding layer. Since the insulating phase C2 and the conductive phase C3 have the same base material, a single-layer cladding layer C4 can be formed. The cable as a whole has a helical twisted structure. The function of the conductive phase C3 is to individually shield each conductive core C1, which can not only prevent external factors from interfering with the electrical signals transmitted inside the conductive core C1, but also prevent interference between different electrical signals transmitted within...

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Abstract

The invention discloses an electromagnetic shielding cable preparing method. The electromagnetic shielding cable comprises an electric conductor core and a covering layer, wherein the covering layer comprises two phases of an insulating phase and a conducting phase. The insulating phase is made from composite materials of silicon rubber and high-temperature resistant silicate nano-particles and the conducting layer of the covering layer is made from composite materials of silicon rubber and grapheme. The method comprises the following steps: adding the surface modified high temperature silicate nanoparticles to the silicon rubber to obtain the mixed rubber compound A; coating the mixed rubber compound A on the surface of the electric conductor core and performing the initial vulcanization; adding the surface modified graphene to the silicone rubber and then refining the rubber on a mixed refining machine to obtain well-dispersed mixed rubber B; coating the mixed rubber B on the surface of the mixed rubber compound A; then putting it into a vulcanizing machine for further vulcanization; and finally developing into the electromagnetic shielding cable after being cooled. The covering layer made by the method greatly enhances the cable shielding performance and the flame retardant property, and also significantly enhances the cable flexibility and reduces the overall weight.

Description

technical field [0001] The invention relates to a method for preparing a cable, in particular to a method for preparing an electromagnetic shielding cable. Background technique [0002] Electromagnetic Shielding cables are mainly used for information transmission. In order to ensure the transmission performance in the electromagnetic interference environment, on the basis of reducing the electromagnetic energy radiated by the system itself, it is also necessary to have the ability to resist external electromagnetic interference. In general, the structure of electromagnetic shielded cables from the inside to the outside is a conductive core, an insulating layer, an electromagnetic shielding layer and an outer sheath. Among them, the conductive wire core is used to transmit electrical signals, and the material is mainly copper or copper-zinc alloy. The shielding layer is usually formed by wire braiding, metal tape or electrochemical plating coated on the outside of the insul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/06H01B13/22H01B7/02H01B7/04H01B7/17H01B7/18H01B7/29H01B7/295
CPCH01B7/02H01B7/04H01B7/17H01B7/18H01B7/29H01B7/295H01B13/06H01B13/22
Inventor 薛龙建郑颖杰汪鑫谭迪
Owner WUHAN UNIV
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