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Single-core flexible waterproof cable and production method thereof

A flexible waterproof and cable technology, which is applied in the direction of cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of conductor oxidation and influence on conductor performance, and achieve the effect of not easy to break, strong conductivity and prolong service life

Inactive Publication Date: 2016-07-27
SHENZHEN LIANJIAXIANG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above method, water and water vapor easily penetrate into the conductor through the conductor gap, which will cause the conductor to oxidize and affect the performance of the conductor.

Method used

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  • Single-core flexible waterproof cable and production method thereof

Examples

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preparation example Construction

[0035] The present application also provides a method for preparing a single-core flexible waterproof cable. Since the process control conditions in the preparation process of the single-core flexible waterproof cable are prior art, details will not be repeated here. Wherein, the preparation method comprises the following steps:

[0036] S1. Conductor preparation: twist the copper wire 11 and the water-blocking wire 12 to obtain the conductor 1 .

[0037] Specifically, the preparation of the copper wire 11 includes three sub-steps: material selection, drawing and stranding. Material selection: Select the conductor material used according to the requirements of preparing different cables, such as choosing an electrical round copper rod as the conductor material; wire drawing: draw and anneal the conductor material to obtain annealed oxygen-free copper wire, the diameter of the annealed oxygen-free copper wire 0.15mm; Stranding: The annealed oxygen-free copper wire and the wate...

Embodiment 1

[0041] S1. Conductor preparation: After twisting the copper wire 11 and the water-blocking wire 12, a conductor 1 is obtained;

[0042] S2. Wrapped water-blocking layer: the water-blocking layer 2 is evenly covered on the outside of the conductor 1, and the water-blocking layer 2 is wrapped by a water-blocking tape;

[0043] S3. Extruded insulation layer: the insulation layer 3 made of halogen-free low-smoke flame-retardant polyolefin composite material is evenly coated on the outside of the water-blocking layer 2 by extrusion;

[0044] Among them, EVA40 parts, Mg(OH) 2 160 parts, 50 parts of LDPE, 15 parts of compatibilizer, 2 parts of synergist and 1 part of stabilizer.

Embodiment 2

[0046] S1. Conductor preparation: After twisting the copper wire 11 and the water-blocking wire 12, a conductor 1 is obtained;

[0047] S2. Wrapped water-blocking layer: the water-blocking layer 2 is evenly covered on the outside of the conductor 1, and the water-blocking layer 2 is wrapped by a water-blocking tape;

[0048] S3. Extruded insulation layer: the insulation layer 3 made of halogen-free low-smoke flame-retardant polyolefin composite material is evenly coated on the outside of the water-blocking layer 2 by extrusion;

[0049] Among them, EVA60 parts, Mg(OH) 2 190 parts, 30 parts of LDPE, 20 parts of compatibilizer, 2 parts of synergist and 0.8 parts of stabilizer.

[0050] Example 2

[0051] S1. Conductor preparation: After twisting the copper wire 11 and the water-blocking wire 12, a conductor 1 is obtained;

[0052] S2. Wrapped water-blocking layer: the water-blocking layer 2 is evenly covered on the outside of the conductor 1, and the water-blocking layer 2 is...

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Abstract

The invention discloses a single-core flexible waterproof cable and a production method thereof. The single core flexible waterproof cable comprises a conductor, a water-blocking layer, and an insulation layer. The water-blocking layer and the insulation layer are sequentially, from inside to outside, disposed on the outer part of the conductor in a wrapped manner. The conductor is formed by intertwisting a plurality of copper wires and a plurality of water-blocking filaments, and the cross section of the conductor is smaller than 10mm2. The diameter of the single filament before the water swelling of the water-blocking filaments is smaller than or equal to the diameter of the single filament of the copper wires, and the diameter of the single filament of the copper filaments is smaller than 0.18mm. The radial and vertical all-directional three-dimensional waterproof effect can be achieved by adopting the waterproof filaments in the conductor, the water-blocking tape disposed on the outer side of the conductor, and the insulation waterproof function of the insulation layer.

Description

technical field [0001] The invention relates to the technical field of power cables, more specifically, to a single-core flexible waterproof cable and a preparation method thereof. Background technique [0002] With the needs of social development, mechanical equipment and electronic products are used more and more widely, involving special occasions such as outdoor (rain), humidity, etc., while demanding the performance of mechanical equipment and electronic products, the The waterproof requirements of the wires used as accessories are also correspondingly increased. [0003] At present, radial waterproofing is generally used for single-core waterproof wires with a conductor cross-sectional area of ​​less than 10 square millimeters in China, that is, polyolefin insulating materials are used for waterproofing. In the above method, water and water vapor easily penetrate into the inside of the conductor through the conductor gap, thereby causing oxidation of the conductor and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/288H01B7/29H01B13/00
CPCY02A30/14
Inventor 黄冬莲
Owner SHENZHEN LIANJIAXIANG SCI & TECH
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