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Composite material core used for enhanced cable, preparation process thereof and enhanced cable

A composite core and preparation process technology, which is applied in cable/conductor manufacturing, insulated cables, cables, etc. The protective film is easy to be worn or damaged, so as to achieve the effect of designability, good applicability and increased flexibility

Inactive Publication Date: 2011-04-20
JIANGSU JIATAI TECH MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the membrane structure, the protective film is easily worn or damaged when the cable is actually laid. In addition, the protective film is easy to fall off in actual application, resulting in partial incomplete wrapping.
[0008] The above-mentioned patents and existing technologies have a common shortcoming. The composite core used for reinforcing cables has only longitudinal fiber reinforcement, but no transverse fiber reinforcement. The fatigue strength and fatigue resistance of the composite core are low. The use of cables Lifespan is affected
In addition, due to the extrusion of the aluminum conductor during the production of the cable, the composite core is easy to crack, and it cannot be detected, which will inevitably affect the strength and service life of the composite core and the transmission cable.

Method used

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  • Composite material core used for enhanced cable, preparation process thereof and enhanced cable
  • Composite material core used for enhanced cable, preparation process thereof and enhanced cable
  • Composite material core used for enhanced cable, preparation process thereof and enhanced cable

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Embodiment 1: The cross-sectional area of ​​the inner layer 1 is about 50 square millimeters, and the cross-sectional area of ​​the outer layer 2 is about 20 square millimeters. The inner core 1 uses 60 12K carbon fibers with a fiber diameter of 7 microns; the outer layer 2 uses E glass fibers, braided with 16 bundles of glass fibers, and each bundle of glass fibers is 400Tex; a 16-spindle horizontal braiding machine is used; thermosetting resin Epoxy resin is selected, the glass transition temperature Tg is about 125°C, acid anhydride is used as curing agent, and imidazole is used as accelerator. Proportion of epoxy resin glue: epoxy resin: methyltetrahydrophthalic anhydride: 1-methylimidazole: zinc stearate = 100:80:2:2. The sum of the weight of the carbon fiber in the inner core 1 and the E-glass fiber in the outer layer 2 accounts for about 50% of the total weight of the composite core.

[0071] The specific production steps are as follows:

[0072] 60 rolls of ca...

Embodiment 2

[0074] Embodiment 2: The cross-sectional area of ​​the inner layer 1 is about 29 square millimeters, and the cross-sectional area of ​​the outer layer 2 is about 2.6 square millimeters. The inner core 1 uses 46 12K carbon fibers with a fiber diameter of 7 microns; the outer layer 2 uses E glass fibers, braided with 24 bundles of glass fibers, and each bundle of glass fibers is 120 two strands; a 24-spindle horizontal braiding machine is used 7 ; The thermosetting resin is epoxy resin, the glass transition temperature Tg is about 160 ℃, acid anhydride is used as curing agent, and imidazole is used as accelerator. Proportion of epoxy resin glue: epoxy resin: methyltetrahydrophthalic anhydride: 1-methylimidazole: zinc stearate = 100:80:1.5:2. The sum of the weight of the carbon fiber in the inner core 1 and the E-glass fiber in the outer layer 2 accounts for about 75% of the total weight of the composite core.

[0075] The specific production steps are as follows:

[0076] 46 r...

Embodiment 3

[0078] Embodiment 3: The cross-sectional area of ​​the inner core 1 is about 74 square millimeters, and the cross-sectional area of ​​the outer layer 2 is about 52 square millimeters. Inner core 1 uses 100 12K carbon fibers with a fiber diameter of 7 microns, and 50 800Tex basalt fibers with a fiber diameter of 9 microns. The inner core 1 uses carbon fibers and basalt fibers in a mixed arrangement; the outer layer 2 uses two horizontal braiding machines 7 weaving, the first weaving machine 7 is 24 spindles, the second weaving machine 7 is 16 spindles, the 24-spindle braiding machine 7 is woven with 24 bundles of E glass fibers, and each bundle of glass fibers is 400Tex; the 16-spindle braiding machine 7 It is braided with 16 bundles of aramid fibers, and each bundle of aramid fibers is made of Kevlar49; the thermosetting resin is made of epoxy resin, the glass transition temperature Tg is about 190°C, and acid anhydride is used as a curing agent, and imidazole is used as an acc...

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Abstract

The invention relates to a composite material core used for an enhanced cable, a preparation process and the enhanced cable. The composite material core comprises an inner core and an outer layer, wherein the inner core is composed of fiber and thermosetting resin; the outer layer comprises a fiber woven pipe and thermosetting resin which are composited to form the outer layer; and the fiber woven pipe of the outer layer is a network structure which is woven by interlacing a plurality of fiber bundles. The transversal strength of the composite material core is greatly improved by the interlaced network structure, the fatigue resistance of the composite material core is greatly improved, and the service life of the composite material core and a power transmission cable is prolonged; and the problem that the composite material core is broken when the composite material core is stranded, wound and extruded by a conductor in the manufacturing process of the cable is completely avoided. As the fiber woven pipe is adopted by the outer layer, the flexibility of the outer layer is greatly increased by the interlaced and woven structure, thereby meeting the requirement of manufacturing composite material core with major diameter.

Description

technical field [0001] The invention relates to a composite material core, in particular to a composite material core for reinforcing cables. In addition, the invention also relates to the preparation process of the composite material core and the reinforced cable using the composite material core. Background technique [0002] At present, in terms of long-distance cable erection and transmission, the load-bearing parts of cables mostly use steel cores. There are many shortcomings and deficiencies in adopting the steel core as the load-bearing component. For example, the cables are prone to sagging due to thermal expansion, and the steel core itself will consume a lot of electric energy when conducting electricity, and its weight is relatively large, which leads to the need to strengthen the structure of transmission towers and utility poles accordingly. [0003] In order to solve many problems existing in the steel core as a load-bearing component, a solution of a composi...

Claims

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Application Information

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IPC IPC(8): H01B7/18H01B13/00H01B13/22
Inventor 冯毅
Owner JIANGSU JIATAI TECH MATERIAL
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