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, t

Method used

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

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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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