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Method for manufacturing reinforced composite cable core

A composite material and manufacturing method technology, applied in cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of uneven thickness of the outer insulating layer, poor transverse compressive strength, exposed carbon fibers, etc., to shorten the gel time, The effect of improving the transverse compressive strength and increasing the degree of cross-linking

Inactive Publication Date: 2012-11-28
BEIJING HAOYEJIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have important guiding significance for the manufacture of high-performance composite cable reinforcement cores, but the products of the above-mentioned patents still have the following problems: ①The thickness of the outer insulating layer is uneven, and even some carbon fibers are exposed; ②The transverse compressive strength is poor, and the longitudinal direction is easy to crack. ;③The pultrusion speed is slow, generally (0.2~0.6)m / min

Method used

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  • Method for manufacturing reinforced composite cable core
  • Method for manufacturing reinforced composite cable core
  • Method for manufacturing reinforced composite cable core

Examples

Experimental program
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Effect test

example 1

[0019] Such as figure 1 As shown, the cable reinforcing core of the present invention includes an inner core C and an outer cladding S. The inner core C and the outer cladding layer S are composited by a plurality of fibers or their fabrics and resin. The inner core C is made of TORAY T700S (12K) carbon fiber, the outer cladding layer S is made of HS2 (SC-1200) untwisted glass fiber roving of Nanjing Glass Fiber Research and Design Institute, and the resin used is JEh-012 produced by Changshu Jiafa Chemical Co., Ltd. Modified polyglycidylamine high temperature resistant epoxy resin, the epoxy value is (0.80~0.85) mol / 100g, the curing agent used is modified tetrahydrophthalic anhydride produced by Changshu Jiafa Chemical Co., Ltd., and the accelerator is Shanghai Li The LMY-2404 modified liquid imidazole accelerator produced by Yi Technology Development Co., Ltd., the release agent is INT-1890M produced by AXEL Company of the United States, and the toughening agent is ICAM-861...

example 2

[0032] Such as figure 1As shown, in this example, Araldite MY 721 multi-functional high-temperature resistant epoxy resin produced by Huntsman Company of the United States is used. The epoxy value is (0.90-0.95) mol / 100g. The curing agent used is Tianjin Synthetic The liquid modified tetrahydrophthalic anhydride produced by the Material Industry Research Institute, the accelerator is the modified liquid imidazole produced by Tianjin Chemical Reagent Company, and the other components and implementation methods are the same as in Example 1. The glue solution of this example is mixed with a mass ratio of 100:145:1:0.7:15. The outer cladding layer S is a woven glass fiber outer cladding layer S with a thickness of 1 mm. After the second dipping, it enters the mold and heat treatment furnace for curing and post-curing respectively. The temperatures of glue tanks I and II are 45°C and 54°C respectively, the temperature of the third section of the mold is set at 175°C, 210°C, and 18...

example 3

[0034] The embodiment of example 3 is the same as example 1, adopting 38 bundles of TORAY T700S (12K) carbon fibers and 24 bundles of Nanjing Glass Fiber Research and Design Institute HS2 (SC-1200) glass fibers, can make the outer diameter is 7.11mm Composite reinforcement core, The tensile strength reaches 2.28Gpa, and the transverse compressive strength increases by 60%. By the same token, carbon fiber composite reinforced cores with diameters ranging from 5mm to 15mm can be made according to the number of fibers. The general fiber volume content is (60-80)%.

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Abstract

The invention provides a method for manufacturing a reinforced composite cable core, belonging to the field of high performance composites. The reinforced cable cores in the prior art have the following problems: (1) the thickness of the outer insulating layers is not uniform and even carbon fibers are locally exposed; (2) the transverse compressive strength is poor and the cores are easy to crack; and (3) the pultrusion speed is lower and is generally (0.2-0.6)m / min. The method is characterized by selecting epoxy resins (with epoxy value being 0.80-0.95mol / 100g) with multi-functional groups,a modified anhydride curing agent, a modified imidazole accelerating agent, an inner release agent and a toughening agent, optimizing the resin mixing proportion, simultaneously introducing the fiberbraiding technology and braiding a sleeve layer outside the axially arranged inner core fiber bundles of the reinforced core to prepare the high performance reinforced composite cable core. The cablecore has the advantages of uniform insulating layer thickness, high transverse compressive strength, high production speed and high toughness.

Description

technical field [0001] The invention relates to a method for manufacturing a composite material cable reinforcement core. Background technique [0002] At present, with the development of the economy and the advancement of industrialization, the demand for current electricity is increasing day by day. Usually the way to solve this problem is to build a new transmission line or increase the capacity of the original line. The former has a large amount of work, costs a lot, and takes up valuable land resources. Therefore, increasing the capacity of the original line is the first choice to solve this contradiction. The traditional large-capacity steel-reinforced aluminum stranded wire has problems such as large weight, low strength, high thermal expansion coefficient, large sag, and poor temperature resistance. Many universities, scientific research institutions, companies and other units at home and abroad have carried out a lot of work on large-capacity overhead conductors, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
Inventor 张凤翻阳武
Owner BEIJING HAOYEJIA TECH