CN214705489U

CN214705489U - Single-side self-adhesive copper-plastic composite belt for shielding nuclear power communication cable

Info

Publication number: CN214705489U
Application number: CN202121291587.8U
Authority: CN
Inventors: 钱晶
Original assignee: HANGZHOU DONGXING TELECOMMUNICATION MATERIAL CO LTD
Current assignee: HANGZHOU DONGXING TELECOMMUNICATION MATERIAL CO LTD
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-11-12
Anticipated expiration: 2031-06-09

Abstract

The utility model relates to a communication cable shields with single face self-adhesion copper-plastic composite band. The technical scheme is as follows: the single-sided self-adhesive copper-plastic composite belt for shielding the nuclear power communication cable is characterized in that: the composite belt comprises a copper foil and a PET film which are compounded into a whole, wherein the other surface of the PET film is compounded with a layer of PE film; the PE film is used for bonding the copper foil on the outer circumferential surface of the communication cable signal wire when being heated and melted. The composite tape should have good flexibility and shielding ability to be effectively applied in the nuclear power field.

Description

Single-side self-adhesive copper-plastic composite belt for shielding nuclear power communication cable

Technical Field

The utility model relates to a communication cable shields with single face self-adhesion copper-plastic composite band.

Background

The shielding layer of the existing communication cable is formed by coating a single-sided self-adhesive aluminum-plastic composite tape (namely a layer of aluminum foil and a layer of PE film); used under normal conditions, generally without problems. However, the service life of the solar water heater is often not satisfactory under the conditions that the service environment is severe and the service life of a client is required to be 80 years. For example, a communication cable used in the nuclear power field is often in a narrow use environment, numerous communication cables and a strong interference signal; therefore, the conventional communication cable has not been satisfactory in terms of flexibility and shielding ability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough in the above-mentioned background, providing a compound area is moulded to single face self-adhesion copper for nuclear power communication cable shielding, this compound area should have good compliance and shielding ability to effective application is kept away in the nuclear power field.

The utility model provides a technical scheme is:

the single-sided self-adhesive copper-plastic composite belt for shielding the nuclear power communication cable is characterized in that: the composite belt comprises a copper foil and a PET film which are compounded into a whole, wherein the other surface of the PET film is compounded with a layer of PE film; the PE film is used for bonding the copper foil on the outer circumferential surface of the communication cable signal wire when being heated and melted.

The copper foil has a thickness of 18 microns.

The thickness of the PET film was 25 micrometers.

The PE film had a thickness of 30 microns.

The utility model has the advantages that:

because conventional aluminium foil can not satisfy the requirement of nuclear power communication simultaneously in compliance and shielding capacity, so the utility model discloses changed into the copper foil. In order that the copper foil can be better coated and bonded outside the communication cable signal wire, a layer of PE is additionally arranged on the other surface of the PET film; after the PE is heated and melted, the copper foil coating layer can be bonded and fixed outside the signal wire, so that the quality of the cable is improved, and signal escape and external interference are reduced; and has sufficient flexible performance, so that the cable can be used in smaller space areas such as nuclear power fields. In addition, the service life can reach more than 80 years, and the requirements of users are met.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is a schematic structural diagram of a nuclear electrical communication cable.

Detailed Description

The following further description is made with reference to the embodiments shown in the drawings.

The single-sided self-adhesive copper-plastic composite tape for shielding the nuclear power communication cable shown in FIG. 1 (the composite tape is usually coiled into a disc shape, so the width of the composite tape is determined according to the requirement, usually 2-5cm, and the length of the composite tape is usually tens of meters) comprises a copper foil 1 and a PET film 2 which are compounded into a whole, wherein the other surface of the PET film is compounded with a layer of PE film 3; the PE film may bond the copper foil to the outer circumferential surface of the communication cable signal line while being heated and melted.

The heating and melting process does not need to add additional working procedures, and only needs to utilize a normal production flow. The production process of the nuclear communication cable (coaxial cable) comprises the following steps: firstly, an insulating layer 5 (usually a foaming layer) is injected on the outer circumferential surface of the inner conductor 4 (copper wire), then the outer circumferential surface of the insulating layer is coated with the utility model (namely the single-sided self-adhesive copper-plastic composite belt 6), and the exposed surface of PE is attached to the insulating layer during coating; and finally, an outer sheath 7 (usually a low-smoke halogen-free flame-retardant polyolefin material) is injected on the outer circumferential surface of the single-sided self-adhesive copper-plastic composite belt.

The temperature at which the outer sheath is injection molded is generally higher than that of PE. Therefore, when the outer sheath is injection molded, the heat conducted to the PE through the copper foil and the PAT is enough to enable the PE to be in a molten state; the PE has adhesive force in a molten state, can play a role of adhesive glue, adheres the integrated copper foil and PET (the melting point of the PET is far higher than that of the outer sheath and the PE) on the outer circumferential surface of the insulating layer, and is firmly fixed into a whole after being cooled.

Preferably, the thickness of the copper foil can be determined according to requirements, and is preferably 18 microns; the thickness has excellent electromagnetic wave shielding performance and enough flexibility, so that the cable can be bent to form a radian with a smaller diameter, and the cable is suitable for smaller space areas such as nuclear power.

The thickness of the PET film can be determined according to requirements, and is preferably 25 micrometers; after the copper film is compounded with the copper foil to form the copper film, the strength of the copper foil can be enhanced, so that the copper foil cannot be damaged, and the shielding performance of the cable is ensured.

The thickness of the PE film can be determined as desired, preferably 30 microns; after melting, enough adhesive force can be generated, thereby ensuring the excellent performance of the shielding layer.

Claims

1. The single-sided self-adhesive copper-plastic composite belt for shielding the nuclear power communication cable is characterized in that: the composite belt comprises a copper foil (1) and a PET film (2) which are compounded into a whole, wherein the other surface of the PET film is compounded with a layer of PE film (3); the PE film is used to bond the copper foil to the outer circumferential surface of the communication cable signal line when heated and melted.

2. The single-sided self-adhesive copper-plastic composite tape for shielding the nuclear power communication cable according to claim 1, wherein: the copper foil has a thickness of 18 microns.

3. The single-sided self-adhesive copper-plastic composite tape for shielding the nuclear power communication cable according to claim 2, wherein: the thickness of the PET film was 25 micrometers.

4. The single-sided self-adhesive copper-plastic composite tape for shielding the nuclear power communication cable according to claim 3, wherein: the PE film had a thickness of 30 microns.