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A kind of preparation method of coaxial cable

A coaxial cable and inner conductor technology, applied in the manufacture of coaxial cables, cable/conductor manufacturing, circuits, etc. The problem of large bending flexibility of the shaft cable, etc., can reduce the bending flexibility, the signal shielding effect is good, and the structure ratio is reasonable.

Active Publication Date: 2016-07-06
江苏河阳线缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Coaxial cables can be divided into baseband coaxial cables and broadband coaxial cables (that is, network coaxial cables and video coaxial cables) in terms of usage. Coaxial cables are divided into 50Ω baseband cables and 75Ω broadband cables. Baseband cables are divided into two types: Thin coaxial cable and thick coaxial cable, the baseband cable is only used for digital transmission, and the data rate can reach 10Mbps. For example, the patent number 201110169520.1 is a coaxial cable and its production process, which aims to provide a kind of coaxial cable that is not easy to be affected by moisture and has high transmission quality. Stable coaxial cable with good electrical performance and its production process. The coaxial cable includes an inner conductor (1), an outer conductor (3), an outer sheath (4), and a combined insulating layer. The combined The insulating layer comprises an inner thin layer (21), a foamed insulating layer (22), and an outer thin layer (23), and the inner thin layer (21), the foamed insulating layer (22), and the outer thin layer (23) consist of an inner Wrapped around the periphery of the inner conductor (1) to the outside, the outer layer body (3) is arranged on the periphery of the outer thin layer (23), and the outer sheath (4) is wrapped around the outer conductor (3) outside, the present invention can be widely used in the field of coaxial cable and its production, but the signal shielding effect of the coaxial cable prepared in this way is not good, and the bending flexibility of the coaxial cable is too large, which is easy to cause damage to the outer sheath. Broken, the shielding layer is exposed, affecting the shielding effect, and the flame retardant and oxidation resistance of the outer sheath is not good, it is easy to age, and the inner conductor is used for a long time, and the heat dissipation is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of a coaxial cable, the coaxial cable includes an internal conductor, the external conductor has an insulating layer, which includes the rubber layer and the foam layer.The exterior of the shielding layer has an outer sleeve. The preparation method includes the following steps:

[0021] (1) Take anaerobic copper core as an internal conductor. After the middle school is directly installed in the school, the diameter is 3mm in the pull -up mold. After cleaning with acetone and ion water, the surface is used to blow dry the surface with nitrogen.After heating and melting in the reaction kettle, spray it with a high -pressure spray gun evenly to the surface of anaerobic copper core, and the thickness of the silver layer is 0.05mm;

[0022] (2) The inner conductor is set on the inner steel core, and the fluorine rubber is heated to the melting. After the squeezing machine is fixed on the outer layer of the inner conductor by injection molding, it is made i...

Embodiment 2

[0028] Example 2: The rest are the same as the embodiment 1. The difference is that in steps (1), the diameter of the anaerobic copper core is 0.2mm, and the thickness of the silver plating layer is 0.005mm.The thickness of 0.3mm, in step (3), the ratio of polyethylene and nucleus is 2: 0.2, the mixed stirring temperature is 200 ° C, the thickness of the foam layer is 1mm, and the temperature of the three -step cooling temperature in the step (4), the three -step cooling temperature of the three -step cooling temperatureThey are 48 ° C, 35 ° C, 20 ° C, steps (6), 30WT%of aluminum hydroxide, 12WT%of magnesium hydroxide, ethylene-acetate ethylene cocoa 30WT%, linear low-density polyethylene 15WT%, ethylene-acetate-acetate-acetate-acetate-acetate-acetate-acetate-acetic acidEthylene is 10WT%, 0.8WT%of trigestylthoxyate, ethylene-based (β-methoxyyl oxygen) Silicane 1WT%, and zinc 1.2WT%.

Embodiment 3

[0029] Example 3: The rest are the same as the embodiment 1. The difference is that the diameter of the anaerobic copper core is 2mm and the thickness of the silver plating layer is 0.03mm. In step (3)2: 0.05, the mixing temperature is 250 ° C, the thickness of the foam layer is 0.5mm, and in step (4), the temperature of the three -step cooling of three steps is 50 ° C, 40 ° C, 30 ° C, and the 1 layer in step (5).As a shielding layer, in steps (6), ethylene is 5WT%.

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Abstract

The invention discloses a preparation method of a coaxial cable, which relates to the field of cable processing. The coaxial cable includes an inner conductor, an insulating layer, a shielding layer and an outer sheath, and the insulating layer includes a rubber layer and a foaming layer, wherein , take the oxygen-free copper core as the inner conductor, after straightening, sizing, and ultrasonic cleaning, dry the surface with nitrogen, and then spray the silver paste evenly on the surface of the oxygen-free copper core with a high-pressure spray gun to obtain the inner conductor. The silver-plated coating on the oxygen copper core protects the copper core against oxidation, prolongs the service life, enhances the directionality of signal transmission, and improves the signal quality. A rubber layer is provided outside the inner conductor to reduce the bending flexibility of the coaxial cable , There are heat dissipation holes on the rubber layer, which can help the inner conductor dissipate the heat generated during work, reduce the resistance of long-term work, and increase the current. In the outer sheath, aluminum hydroxide and magnesium hydroxide are added to the outer sheath. Triphenyl phosphite is used as an antioxidant to increase the flame retardant and anti-aging properties of the outer sheath.

Description

Technical field [0001] The present invention involves the field of cable processing, especially the preparation method of coaxial cable. Background technique [0002] Saguar cables can be divided into baseband coaxial cables and broadband coaxial cables (ie, network coaxial cables and video coaxial cables) from the purpose. The coaxial cable is divided into 50Ω baseband cables and 75Ω broadband cables.Fine -shaft cables and coarse same -thexis cables, baseband cables are only used for digital transmission, and the data rate can reach 10Mbps. For example, the patent number is 201110169520.1 is a coaxial cable and its production process.Stable and electrical performance of coaxial cables and their production processes, a coaxial cable includes internal conductors (1), external conductor (3), outer condoms (4), combined insulating layer, combined as a combinationThe insulation layer includes the inner thin layer (21), the foam insulation layer (22), the outer thin layer (23), the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/016H01B13/24
Inventor 谭震张思斌
Owner 江苏河阳线缆有限公司
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