Special high-toughness carbon fiber composite core rod for power transmission wire

A technology for transmission wires and composite mandrels, applied to power cables including optical transmission components, conductive materials dispersed in non-conductive inorganic materials, conductors, etc. Rod brittleness and other problems, to achieve the effect of low line cost, small sag, and large carrying capacity

Active Publication Date: 2020-12-29
STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned mandrel is brittle and has poor toughness. During long-term use, it is easy to crack or break, which seriously affects the safe operation of the transmission line.

Method used

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  • Special high-toughness carbon fiber composite core rod for power transmission wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A special high-toughness carbon fiber composite mandrel for power transmission wires, made of the following raw materials in parts by weight: 35 parts of polyacrylonitrile-based carbon fiber, 5 parts of glass fiber, 7 parts of sisal fiber, 18 parts of epoxy resin, and 9 parts of curing agent 1.5 parts of liquid silicone rubber, 2.5 parts of filler, 1.2 parts of coupling agent, 250 parts of styrene.

[0023] The carbon content of the polyacrylonitrile-based carbon fiber is 92%. The curing agent is curing agent 703. The coupling agent is silane coupling agent KH550. The filler is silicon nitride.

Embodiment 2

[0025] A special high-toughness carbon fiber composite mandrel for power transmission wires, made of the following raw materials in parts by weight: 36 parts of polyacrylonitrile-based carbon fiber, 6 parts of glass fiber, 8 parts of sisal fiber, 20 parts of epoxy resin, and 10 parts of curing agent 1.6 parts of liquid silicone rubber, 3 parts of filler, 1.3 parts of coupling agent, 253 parts of styrene.

[0026] The carbon content of the polyacrylonitrile-based carbon fiber is 93%. The curing agent is curing agent 704 . The coupling agent is silane coupling agent KH550. The filler is nano titanium dioxide.

Embodiment 3

[0028] A special high-toughness carbon fiber composite mandrel for power transmission wires, made of the following raw materials in parts by weight: 37 parts of polyacrylonitrile-based carbon fiber, 7 parts of glass fiber, 9 parts of sisal fiber, 21 parts of epoxy resin, and 10.5 parts of curing agent Parts, 1.7 parts of liquid silicone rubber, 3.5 parts of filler, 1.4 parts of coupling agent, 255 parts of styrene.

[0029] The carbon content of the polyacrylonitrile-based carbon fiber is 94%. The curing agent is curing agent 781. The coupling agent is silane coupling agent KH551. The filler is calcium carbide.

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Abstract

The invention discloses a special high-toughness carbon fiber composite core rod for a power transmission wire, and belongs to the technical field of power transmission line wires. The composite material is prepared from the following raw materials in parts by weight: 35-42 parts of polyacrylonitrile-based carbon fibers, 5-10 parts of glass fibers, 7-15 parts of sisal fibers, 18-24 parts of epoxyresin, 9-12 parts of a curing agent, 1.5-2 parts of liquid silicone rubber, 2.5-6 parts of filler, 1.2-1.8 parts of a coupling agent and 250-270 parts of styrene. The surface is round, bright and clean, smooth, consistent in color and luster and free of defects, the tensile strength is 2673 MPa-2708 MPa, the elastic modulus is 140 GPa-151 GPa, the core rod is wound on a barrel with the diameter of55 D by one circle at the winding speed not larger than 3 r/min, and the core rod does not crack or break. A 360-degree torsion test shows that the surface layer does not crack, and the tensile strength after torsion reaches 2567 MPa or above. A tensile strength test at a high temperature of 160 DEG C shows that the tensile strength is 2441-2455 Mpa.

Description

technical field [0001] The invention relates to the technical field of transmission line conductors, in particular to a high-toughness carbon fiber composite mandrel specially used for transmission conductors. Background technique [0002] The carbon fiber composite core conductor is made of a composite material core instead of the steel core in the traditional steel-cored aluminum stranded wire. It is a new concept of conductor for overhead transmission lines and an innovative application of high-performance composite materials in transmission conductors. The advanced composite material core wire has excellent properties such as high strength, corrosion resistance, high conductivity, large current carrying capacity, small linear expansion coefficient, small sag, light weight, and long service life, which can effectively meet the requirements of energy saving, safety, and safety in the field of power transmission and transformation. Higher requirements for environmental prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/24H01B7/17H01B7/18H01B7/28H01B7/29H01B9/00
CPCH01B7/18H01B9/005H01B7/29H01B7/2806H01B7/17H01B1/24Y02A30/14
Inventor 姜鹏博李德栓史红伟韩庆军高新军徐嘉明
Owner STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY
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