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Bending-resistant flexible cable and production process thereof

A flexible cable and bending-resistant technology, applied in the field of bending-resistant flexible cables and their production processes, can solve the problems of poor PP material, reduced cable service life, unstable cable cores, etc.

Inactive Publication Date: 2022-05-24
连云港兴宇特种电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of twist-resistant flexible cable and its production process. In the existing cable preparation process, cheap materials such as PP materials and hemp ropes are used as fillers. Due to the poor toughness of PP materials, the cable is bent many times. After that, there will be a problem of fracture, which will lead to the instability of the cable core and greatly reduce the service life of the cable

Method used

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  • Bending-resistant flexible cable and production process thereof
  • Bending-resistant flexible cable and production process thereof
  • Bending-resistant flexible cable and production process thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] A tortuous flexible cable, comprising a plurality of conductors arranged in sequence from the inside and the outside, the conductors are wrapped with an insulating layer, the outside of the insulating layer is provided with a wrapping layer, a filler is arranged between the wrapping layer and the insulating layer, and the wrapping layer An outer sheath is provided on the outside;

[0034] The filler is a modified PP material, and the modified PP material is made by the following steps:

[0035] Step A1: Dissolve cardanol in chloroform, add boron trifluoride ether solution and epichlorohydrin, carry out the reaction for 4h under the condition of rotating speed of 150r / min and temperature of 60℃, then add deionized water to quench The reaction was carried out, and then the solvent was distilled off to obtain intermediate 1. The pyrroline-2,5-dicarboxylic acid, triphosgene, and tetrahydrofuran were mixed uniformly, and the rotating speed was 150 r / min and the temperature w...

Embodiment 2

[0041] A tortuous flexible cable, comprising a plurality of conductors arranged in sequence from the inside and the outside, the conductors are wrapped with an insulating layer, the outside of the insulating layer is provided with a wrapping layer, a filler is arranged between the wrapping layer and the insulating layer, and the wrapping layer An outer sheath is provided on the outside;

[0042] The filler is a modified PP material, and the modified PP material is made by the following steps:

[0043] Step A1: Dissolve cardanol in chloroform, add boron trifluoride ether solution and epichlorohydrin, carry out the reaction for 4h under the condition of rotating speed of 180r / min and temperature of 65℃, then add deionized water to quench The reaction is carried out, and then the solvent is removed by distillation to obtain intermediate 1. The pyrroline-2,5-dicarboxylic acid, triphosgene and tetrahydrofuran are mixed uniformly, and the rotating speed is 180r / min and the temperatu...

Embodiment 3

[0049] A tortuous flexible cable, comprising a plurality of conductors arranged in sequence from the inside and the outside, the conductors are wrapped with an insulating layer, the outside of the insulating layer is provided with a wrapping layer, a filler is arranged between the wrapping layer and the insulating layer, and the wrapping layer An outer sheath is provided on the outside;

[0050] The filler is a modified PP material, and the modified PP material is made by the following steps:

[0051] Step A1: Dissolve cardanol in chloroform, add boron trifluoride ether solution and epichlorohydrin, carry out the reaction for 6h under the condition of rotating speed of 200r / min and temperature of 70℃, then add deionized water to quench The reaction was carried out, and then the solvent was distilled off to obtain intermediate 1. The pyrroline-2,5-dicarboxylic acid, triphosgene, and tetrahydrofuran were mixed uniformly, and the rotating speed was 200 r / min and the temperature w...

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Abstract

The invention discloses a bending-resistant flexible cable and a production process thereof. The bending-resistant flexible cable comprises a plurality of conductors which are sequentially arranged from inside to outside, an insulating layer is wrapped outside the conductors, a belting layer is arranged outside the insulating layer, filler is arranged between the belting layer and the insulating layer, and an outer sheath is arranged outside the belting layer. Molecular chains of the modified PP material contain flexible methylene chain links, the methylene chain links have good flexibility, so that the flexibility of the filler is improved, the molecular chains of the modified PP material contain a large number of hydroxyl groups and carbonyl groups, hydrogen bonds can be formed between the hydroxyl groups, and hydrogen bonds can also be formed between the carbonyl groups and the hydroxyl groups. The content of hydrogen bonds in molecules of the modified PP material can be increased, when the cable is subjected to bending acting force, the intramolecular hydrogen bonds are broken, the acting force is counteracted, the toughness of the filler is further improved, meanwhile, the hydrogen bonds can be recombined, and the toughness of the flexible cable is further guaranteed.

Description

technical field [0001] The invention relates to the technical field of cable preparation, in particular to a tortuous flexible cable and a production process thereof. Background technique [0002] A cable is a power or signal transmission device, usually a rope-like cable formed by twisting several or several groups of wires. With a highly insulating covering layer, the cable has the characteristics of internal energization and external insulation, and is made of one or more mutually insulated conductors and an outer insulating protective layer, which transmits electricity or information from one place to another. Conductors; [0003] With the improvement of electrical automation, there are more and more occasions where equipment units need to move back and forth. Since the cable is filled with PP material, the mechanical properties of the PP material are general. After the cable is subjected to external force, the twisted cable is filled with PP material Cracks and gaps oc...

Claims

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Application Information

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IPC IPC(8): H01B7/04H01B7/18H01B13/00C08L23/12C08L29/04
CPCH01B7/04H01B7/1895H01B13/00C08L23/12C08L2203/202C08L29/04Y02A30/14
Inventor 宋佳华赵铁虎何大磊于志创
Owner 连云港兴宇特种电缆有限公司
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