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Modified composite core rod and manufacturing method thereof

A composite mandrel and manufacturing method technology, which is applied in the direction of cable/conductor manufacturing, conductor, insulated cable, etc., can solve the problem that there is no mature manufacturing method for mass production of twisted composite mandrels, and the tension of each strand is difficult to achieve uniformity , complex manufacturing process and other issues, to achieve the effect of uniform force, improved flexibility, and improved bending performance

Active Publication Date: 2014-08-27
FAR EAST CABLE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as the stranded composite core, however, the stranded composite core has complex manufacturing process, difficulty in achieving uniform tension of each strand, and complex connection fittings. Up to now, there is still no mature manufacturing method for mass production of stranded composite mandrels.

Method used

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  • Modified composite core rod and manufacturing method thereof
  • Modified composite core rod and manufacturing method thereof
  • Modified composite core rod and manufacturing method thereof

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Embodiment Construction

[0029] See figure 1 , a modified composite core of this embodiment, comprising a fiber inner core 1 and a fiber outer layer 2 wound or braided outside the inner core 1 and a thermosetting or thermoplastic material uniformly embedded in the fiber inner core 1 and fiber outer layer 2 High temperature resistant resin; fiber inner core 1 is composed of multiple longitudinal fibers with an outer diameter of 5.0-11.0 mm; fiber outer layer 2 has at least two layers; fiber inner core 1 and fiber outer layer 2 are cured by resin to form a whole; composite The outer diameter of the core is 10.0mm-20.0mm; the Tg of the high-temperature-resistant resin is ≥ 90°C, and the volume fraction of the resin is 25%-40%. The fibers of the fiber inner core 1 and the fiber outer layer 2 are high-strength fibers with a strength of 2000-6000 MPa and an elastic modulus of 30-250 GPa, consisting of a single fiber or a mixture of two or more fiber materials.

[0030] See figure 2 and image 3 , the ma...

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Abstract

The invention discloses a modified composite core rod and a manufacturing method thereof. The composite core rod comprises an inner fiber core, an outer fiber layer wound or / and braided or / and longitudinally wrapped outside the inner core, and thermosetting or thermoplastic high temperature-resistant resin uniformly embedded into the inner fiber core and the outer fiber layer. The inner fiber core is composed of a plurality of longitudinal fibers, and the outer diameter is 5.0-11.0mm. The outer fiber layer includes at least two layers. The inner fiber core and the outer fiber layer are cured by the resin to form an integral body. The outer diameter of the composite core rod is 10.0-20.0mm. The Tg of the high temperature-resistant resin is higher than or equal to 90 DEG C, and the volume fraction of the resin is 25-40%. The invention mainly provides a solution for the problem that a conventional fiber-reinforced resin-based composite core rod has low tensile strength and poor bending performance and the cross section of the composite core rod cannot be too large. The bending performance of the composite core rod is improved, the specification range of the composite core rod is expanded, and the tensile strength of the composite core rod is improved. The composite core rod can meet the requirements of transmission lines in harsh environments such as large-span areas and strong-wind areas.

Description

technical field [0001] The invention discloses a modified composite mandrel and a manufacturing method thereof, and provides a modified fiber-reinforced resin-based composite mandrel with large cross-section, high breaking force, good bending performance, and no longitudinal and radial cracking and its manufacture method. Background technique [0002] Resin-based high-strength continuous fiber composite wire, because of its light weight, high tensile strength, high temperature resistance, high specific modulus, and small linear expansion coefficient, should be used in power transmission, marine operations, and bridge reinforcement. widespread attention of the people. In particular, many companies headed by American CTC Company and Far East Composite Technology Co., Ltd. have increasingly highlighted the advantages of using composite materials in power transmission lines. The composite core is mainly composed of multiple longitudinal fibers cured by resin. This structure ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/18H01B13/00H01B13/22
Inventor 汪传斌徐静
Owner FAR EAST CABLE
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