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High temperature-resistant cable based on rock wool and preparation method thereof

A high temperature, cable technology, used in cable/conductor manufacturing, insulating cables, insulating conductors/cables, etc., can solve problems such as negative effects on cable performance

Inactive Publication Date: 2016-09-21
WUHU HANGTIAN SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the existing cables can meet the needs of production and life in most occasions, the performance of the cables is often greatly negatively affected under high temperature conditions

Method used

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  • High temperature-resistant cable based on rock wool and preparation method thereof

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Effect test

preparation example Construction

[0036] The present invention also provides a method for preparing the above-mentioned rock wool-based high temperature resistant cable, the preparation method comprising:

[0037] 1) Twisting the multi-strand wire core unit 1 with each other, then putting the silver-plated aramid wire braid 6 on the outside of the multi-strand wire core unit 1, and then filling the silver-plated aramid wire braid 6 with rock wool 5 internal;

[0038] 2) Extrude the acrylonitrile-butadiene-acrylate copolymer on the outside of the silver-plated aramid wire braid 6 to form the first insulating layer 7, and then embed nano-zirconium carbide on the surface of the first insulating layer 7 A critical layer 8 is formed, and then ethylene-tetrafluoroethylene copolymer is extruded on the outside of the first insulating layer 7 to form a second insulating layer 9 to obtain a rock wool-based high temperature resistant cable.

[0039] In the preparation method of the present invention, the silver-plated a...

preparation example 1

[0043] Aramid filaments with a diameter of 0.10 mm are soaked in 60% by weight acid solution (hydrochloric acid solution), then taken out and plated with a silver layer (the thickness of the silver-plated layer is 1.5 μm) on the outer surface of the aramid filaments to produce The silver-plated aramid yarn is obtained, and then the silver-plated aramid yarn is braided into a silver-plated aramid yarn braiding sheath 6 (with a diameter of 0.88 mm).

Embodiment 1

[0045] 1) Twisting multiple strands of silver-plated copper wires 2 (with a diameter of 0.07 mm and a thickness of the silver-plated layer 3 of 0.7 μm), and then extruding polystyrene onto the outside of the multiple strands of silver-plated copper wires 2 to form a protective layer 4 (diameter is 0.25mm) to make the core unit;

[0046] 2) Twisting the multi-strand wire core units with each other, then putting the silver-plated aramid wire braid on the outside of the multi-strand wire core unit, and then filling the inside of the silver-plated aramid wire braid (with silver-plated The area of ​​the cross section of the aramid yarn braid 6 is a benchmark, and the area occupied by the rock wool 5 in the cross section of the silver-plated aramid yarn braid 6 is 40%);

[0047] 3) Extrude acrylonitrile-butadiene-acrylate copolymer on the outside of the silver-plated aramid wire braid to form the first insulating layer 7 (thickness is 0.18mm), and then embed nano-zirconium carbide i...

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Abstract

The invention discloses a high-temperature-resistant cable based on rock wool and a preparation method thereof. The high-temperature-resistant cable includes a multi-strand wire core unit twisted with each other, and the outer sheath of the multi-strand wire core unit is provided with a silver-plated aramid fiber braided sheath , the silver-plated aramid wire braided sleeve is filled with rock wool; the outside of the silver-plated aramid wire braided sleeve is provided with a first insulating layer, a critical layer and a second insulating layer in sequence along the direction from the inside to the outside; the first insulating layer It is an acrylonitrile-butadiene-acrylate copolymer layer, the critical layer is filled with nano-zirconium carbide, and the second insulating layer is an ethylene-tetrafluoroethylene copolymer layer. The cable prepared by this method has excellent high temperature resistance.

Description

technical field [0001] The invention relates to an insulated cable, in particular to a rock wool-based high temperature resistant cable and a preparation method thereof. Background technique [0002] The cable is usually a rope-like cable twisted by several or several groups of wires. Each group of wires is insulated from each other, and is often twisted around a center, and the entire outside is covered with a highly insulating covering. Most of them are erected in the air or installed underground or underwater for telecommunications or power transmission. The cable is mainly composed of the following 4 parts, ① Conductive core: made of high conductivity material (copper or aluminum). According to the requirements of cable softness under laying conditions, each wire core may be formed by twisting a single wire or multiple wires. ②Insulation layer: The insulation material used for cables should have high insulation resistance, high breakdown electric field strength, low di...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/17H01B7/18H01B7/29H01B13/02H01B13/14H01B13/22
CPCH01B7/0216H01B7/0275H01B7/17H01B7/18H01B7/29H01B13/02H01B13/141H01B13/148H01B13/22H01B13/221
Inventor 吴天凤赵明哲向天波米春海何秀梅
Owner WUHU HANGTIAN SPECIAL CABLE FACTORY
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