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Coaxial cable core wire preparation method and coaxial cable core wire thereof

A technology of coaxial cable core and pellets, applied in the preparation of coaxial cable core wire, in the field of coaxial cable core wire, can solve the problems of low structural strength, anti-stripping performance, poor water vapor permeability resistance, poor high temperature resistance, etc. , to avoid inconsistent thickness, improve anti-peeling performance, and not easy to fall off

Inactive Publication Date: 2017-08-08
SHENZHEN SUIRONG COAXIAL CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the existing problems of the existing coaxial cables, such as poor insulating layer anti-stripping performance, poor water vapor permeability resistance, low structural strength and poor high temperature resistance, a new type of coaxial cable core wire and its preparation method are provided. The coaxial cable Improves the adhesion between the insulating layer and the inner conductor, prevents the erosion of the inner conductor by external moisture, and improves the overall strength and high temperature resistance of the cable

Method used

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  • Coaxial cable core wire preparation method and coaxial cable core wire thereof

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preparation example Construction

[0032] The invention discloses a method for preparing a coaxial cable core wire, which comprises the following steps:

[0033] Step 1: Obtain tackifying layer material particles, insulating layer material particles and reinforcing layer material particles, the tackifying layer material particles include polyethylene raw material and crosslinking agent, the insulating layer material particles include polyethylene raw material, nucleating agent and a crosslinking agent, the structure-reinforcing layer pellets include a crosslinking agent, and polyethylene raw materials;

[0034] Step 2: The inner conductor enters the extruder, and the tackifying layer pellets, insulating layer pellets and structural reinforcement layer pellets obtained in step 1 are put into the extruder respectively, wherein the insulating layer pellets are subjected to foaming treatment. Simultaneously extrude the tackifying layer, insulating layer and structural reinforcing layer outside the inner conductor, ...

Embodiment approach

[0035] As a preferred embodiment of the present invention, the tackifying layer granules include the following components by weight: 0-50 parts of high-density polyethylene, 25-65 parts of low-density polyethylene, 1-3.5 parts of crosslinking agent, The adhesion-promoting layer is a cross-linked polyethylene layer, specifically, it can be obtained by mixing one or both of high-density polyethylene and low-density polyethylene, and then undergoing a cross-linking reaction. It should be noted that the main function of the adhesion-promoting layer is to increase the adhesion and water resistance between the inner conductor of the coaxial cable and the foamed insulating layer, and the use of polyethylene cross-linked layer as the adhesion-promoting layer is only the present invention. One of the implementation methods, those skilled in the art can choose materials such as fluoroplastics for replacement according to needs, which should be included in the scope of protection of the p...

Embodiment 1

[0053] This embodiment is used to illustrate a method for preparing a coaxial cable disclosed in the present invention, which includes the following steps:

[0054] Step 1: Take 50 parts by weight of high-density polyethylene and 55 parts by weight of low-density polyethylene and mix them in a high-speed mixer to prepare the tackifier base material, and then put 2.5 parts by weight of crosslinking agent into the tackifier base material , the TMPTMA of 2.5 parts by weight is included in the crosslinking agent, and the tackifying layer pellets are obtained after being fully mixed;

[0055] Take 70 parts by weight of high-density polyethylene and 60 parts by weight of low-density polyethylene and mix them in a high-speed mixer to prepare the insulating layer base material, and then put 3.5 parts by weight of crosslinking agent and 2 parts by weight of A nucleating agent, comprising 1.0 parts by weight of PETA and 2.5 parts by weight of TPGDA in the crosslinking agent, fully mixed...

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Abstract

The invention provides a coaxial cable core wire preparation method which comprises the following steps of 1, acquiring bonding improving layer particles, insulating layer particles and reinforcing layer particles; and 2, entering an extruder by an inner conductor, inputting the bonding improving layer particles, the insulating layer particles and reinforcing layer particles which are obtained in the step 1 into the extruder, wherein foaming processing is performed on the insulating layer particles; a bonding improving layer, an insulating layer and a structure reinforcing layer are simultaneously extruded outside the inner conductor; and then crosslinking solidifying processing is performed for obtaining the coaxial cable core wire. Furthermore the invention discloses a coaxial cable core wire which is prepared through the coaxial cable core wire preparation method. The coaxial cable core wire preparation method and the coaxial cable core wire thereof aim to settle problems of low peeling resistance, low steam penetration resistance, low structure intensity and low high-temperature resistance of the insulating layer in an existing coaxial cable.

Description

technical field [0001] The invention belongs to the technical field of coaxial cable materials, and in particular relates to a preparation method of a coaxial cable core wire and the coaxial cable core wire. Background technique [0002] There is a basic structure of a coaxial cable, which includes an inner conductor and an insulating layer from the inside to the outside. It is the basic structure of a coaxial cable, wherein the insulating layer is foamed cross-linked polyethylene, and the foamed cross-linked polyethylene The layer has a lower dielectric constant, which is beneficial to increase the data transmission rate. [0003] This kind of coaxial cable has certain defects: due to the low viscosity of the foamed cross-linked polyethylene, it cannot fit well with the surface of the inner conductor during extrusion molding, which affects the adhesion between the insulating layer and the inner conductor. Adhesion, easy to produce gaps, resulting in poor anti-stripping per...

Claims

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Application Information

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IPC IPC(8): H01B13/14H01B13/24H01B7/18H01B7/282H01B7/29H01B11/00
CPCH01B13/147H01B7/187H01B7/2825H01B7/29H01B11/00H01B13/24
Inventor 谢榕辉谢洁伟陈润锋陈树雄林奕群刘柔葵
Owner SHENZHEN SUIRONG COAXIAL CABLE TECH