A high-toughness aluminum-based carbon fiber composite rod and preparation method thereof

By modifying carbon fiber and adding toughened polyurethane, the mechanical properties and heat resistance of carbon fiber composite materials are improved, and the problem of poor toughness of existing carbon fiber composite wire cores is solved, achieving higher mechanical properties and heat resistance.

CN114999726BActive Publication Date: 2025-03-21MAANSHAN OUKAI NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202210771853.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-30
Publication Date
2025-03-21
Estimated Expiration
2042-06-30

AI Technical Summary

Technical Problem

The existing carbon fiber composite wire core has poor toughness, which leads to easy bending and breaking during installation, affecting the overall strength of the wire.

Method used

The carbon fiber is modified by chemical means to increase the roughness and amino groups on its surface, thereby improving the interface bonding between the carbon fiber and the resin substrate. At the same time, toughened polyurethane is added to the traditional epoxy resin curing system to form an interpenetrating network to improve the toughness and heat resistance of the resin substrate.

Benefits of technology

It improves the mechanical properties and heat resistance of carbon fiber composite materials, enhances the toughness and tensile strength of the wire core, and solves the problem of poor toughness.

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Abstract

The invention relates to a high-toughness aluminum-based carbon fiber composite rod and a preparation method thereof, belonging to the technical field of carbon fiber composite materials. The rod comprises a carbon fiber reinforcement core and an aluminum alloy conductor layer, wherein the aluminum alloy conductor layer is composed of aluminum alloy single wires twisted outside the carbon fiber reinforcement core. The preparation method is as follows: epoxy resin, toughened polyurethane and a diluent are stirred and mixed, a curing agent and an accelerator are added, vacuum degassing is performed at a temperature of 60-80 DEG C and a vacuum degree of 0.05-0.1MPa for 2-3 hours, and the rod is transferred to an impregnation tank after cooling to room temperature; the amino carbon fiber is dried, dipped in an impregnation tank by a pultruder, and then cured and formed in a high-temperature curing mold to obtain a carbon fiber reinforcement core; a plurality of aluminum alloy single wires are twisted on the surface of the carbon fiber reinforcement core to form an aluminum alloy conductor layer to obtain a high-toughness aluminum-based carbon fiber composite rod. The carbon fiber composite rod prepared by the invention has higher mechanical properties and heat resistance.
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