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Composite core used for reinforced cable and reinforced cable

A composite material core and cable technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of incomplete utilization of the transverse fiber effect of the fiber sleeve, reduced tensile strength of the composite core, unsuitable quality control, etc. And the effect of high elastic modulus, improving fatigue strength and fatigue resistance, and not easy to fall off

Inactive Publication Date: 2011-06-29
JIANGSU JIATAI TECH MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But only the two-layer structure composed of the inner core and the outer layer (fiber sleeve) will cause the following problems: first, when the composite core is subjected to a huge tensile force, the fiber sleeve and the inner core will meet at the composite core joint or joint. Detachment occurs, the composite core is not broken, but because the fiber sleeve and the inner core break at the joint or joint, which reduces the tensile strength of the composite core in the axial direction and produces negative effects; second, due to the composite core The fiber sleeve and the inner core will be delaminated or hollow during mass production, the bond is not dense, and the quality is not suitable for control, so that the role of the transverse fiber of the fiber sleeve is not fully utilized. Anti-torsion, anti-fatigue can not fully achieve a very prominent role

Method used

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  • Composite core used for reinforced cable and reinforced cable
  • Composite core used for reinforced cable and reinforced cable
  • Composite core used for reinforced cable and reinforced cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: The inner core 1 uses 72 carbon fibers of 12K, the fiber diameter is 7 microns, and the tension is controlled with an adjustable tension frame, so that the tension of the carbon fibers is basically the same; the structural layer 2 is braided with 24 bundles of glass fibers. The glass fibers are 90 pieces and 4 strands; a 24-spindle horizontal braiding machine is used; 28 1200Tex glass fibers are used for the outer layer 3, and modified epoxy resin is used as the thermosetting resin, and the glass transition temperature Tg is about 210 °C. Curing agent, imidazole accelerator. Proportion of epoxy resin: modified epoxy resin: modified anhydride: 1-methylimidazole: zinc stearate=100:100:2:2. The sum of the fiber weights of the carbon fibers in the inner core 1, the fiber braided tubes in the structural layer 2 and the glass fibers in the outer layer 3 accounts for about 80% of the total weight of the composite core.

[0053] Use this ratio to select materials...

Embodiment 2

[0054] Embodiment 2: The inner core 1 uses 36 12K carbon fibers with a fiber diameter of 7 microns, and uses an adjustable tension frame to control the tension so that the carbon fiber tension is basically consistent; Fiber braiding, each bundle of glass fibers is 120 two strands; a 16-spindle horizontal braiding machine is used; 20 600Tex basalt fibers are used for the outer layer 3, and epoxy resin is used as the thermosetting resin, and the glass transition temperature Tg is about 180°C. Use acid anhydride curing agent and imidazole as accelerator. Proportion of epoxy resin: modified epoxy resin: methyltetrahydrophthalic anhydride: 1-methylimidazole: zinc stearate = 100:90:1.5:2. The sum of the fiber weights of the carbon fibers in the inner core 1 and the basalt fibers in the structural layer 2 and the basalt fibers in the outer layer 3 accounts for about 70% of the total weight of the composite core.

[0055] Use this ratio to select materials to manufacture a composite ...

Embodiment 3

[0056] Example 3: The inner core 1 uses 75 12K carbon fibers with a fiber diameter of 7 microns, the structural layer 2 uses 24 bundles of basalt fibers to weave, each bundle of fibers is 90 four strands, and the outer layer 3 uses 100 Kevlar49 aramid fibers. The second structure layer 2' uses 36 bundles of glass fiber to weave, each bundle of glass fiber is 80 pieces and 6 strands, the second outer layer 3' uses 40 1200Tex glass fibers, and uses an adjustable tension frame to control the tension, so that carbon fiber, aramid fiber The tension of the fiber and the glass fiber is basically the same; the thermosetting resin is epoxy resin, the glass transition temperature Tg is about 200 ℃, and the acid anhydride curing agent and imidazole are used as accelerators. Epoxy resin ratio: modified epoxy resin: modified anhydride: 1-methylimidazole: zinc stearate: 12-14 alkyl glycidyl ether = 100:100:1.6:2:5. The sum of the fiber weights of the carbon fibers in the inner core 1, the b...

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Abstract

The invention relates to a composite core used for a reinforced cable. The composite core comprises an inner core, a structural layer and an outer layer, wherein the inner core comprises fibers and thermosetting resins; the structural layer comprises a fiber sleeving and the thermosetting resins; the fiber sleeving is formed by braiding a plurality of fibers or spirally winding the fibers along the axial direction of the inner core; and the outer layer comprises fibers arranged along the length direction of the composite core and the thermosetting resins. The composite core provided by the invention has the following beneficial effects: the outer layer is added outside the structural layer and the continuous fibers arranged along the length direction of the composite core are added to theouter layer; and the added outer layer wholly covers the structural layer 2 and provides protection to the fiber sleeving in the structural layer 2, under the condition that the composite core is subjected to great tension, the stretch and extension rates of the outer layer 3 and the inner core 1 are basically the same and the extension quantities of the outer layer 3 and the inner core 1 are synchronous, and the structural layer is tightly squeezed by the inner core and the outer layer so that the structural layer in the middle is not easy to drop or separate, thus effectively overcoming thedefect that the composite core adopts the fiber sleeving structure.

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 present invention also relates to reinforced cables using composite material cores. 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 composite material core is proposed in the prior art. It is mad...

Claims

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Application Information

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IPC IPC(8): H01B5/10H01B7/18
Inventor 冯毅
Owner JIANGSU JIATAI TECH MATERIAL
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