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Fibre-reinforced compound material core and preparation method thereof

A composite material core and fiber-reinforced technology, applied in chemical instruments and methods, layered products, glass/slag layered products, etc., can solve the problems of carbon fiber composite material core brittleness, aluminum strand breakage, power transmission interruption, etc. Achieve the effects of enhanced toughness, avoiding fracture, improving safety performance and lifespan

Inactive Publication Date: 2012-07-25
ZHEJIANG ZHONG JU COMPOSITE MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves the properties of composites made from glass fiber that are resistant against damage caused during use without requiring expensive equipment such as welding guns for repair purposes. By adding an epoxy glue layer onto one side of each sheet of fabricated fiberglass, they become stronger with less strains than traditional materials like steel but still have excellent impact absorption capabilities when bent repeatedly over many times. Additionally, this new composition also increases flexibility while maintaining low density compared to regular metal cores used today. Overall, these technical improvements enhance their overall durability and lifespan under harsh conditions.

Problems solved by technology

Technological Problem: The present problem addressed by this patented technology relates to improving the tensile property, impact toughness, heat shock resistant capacity, and efficiency of making carbon fibergite composites for use in electrical cables while maintaining their overall design flexibility and cost effectiveness.

Method used

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  • Fibre-reinforced compound material core and preparation method thereof
  • Fibre-reinforced compound material core and preparation method thereof
  • Fibre-reinforced compound material core and preparation method thereof

Examples

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Embodiment 1

[0026] Example 1: Combining Figure 1-Figure 4 , a fiber-reinforced composite material core of the present invention, which is composed of an inner structure and an outer insulating structure, the inner structure is formed by bonding 3 to 40 parallel or helically twisted fiber-reinforced high-temperature-resistant resin-based thin rods, and the outer The layer insulation structure is a high temperature resistant non-conductive resin coating or a high temperature resistant non-conductive fiber reinforced resin layer, the thickness of which is 10-40% of the diameter of the wire core, and the thickness is uniform along the perimeter.

[0027] The preparation method of the fiber reinforced composite material core of the present invention, the steps are as follows:

[0028] Step 1: Preparation of fiber-reinforced high-temperature-resistant resin-based thin rods:

[0029] Fiber-reinforced high-temperature-resistant resin-based thin rods are prepared by pultrusion of continuous fibe...

Embodiment 2

[0041] Embodiment 2: the preparation method of fiber-reinforced composite material core: the steps are as follows:

[0042] Step 1: Preparation of fiber-reinforced high-temperature-resistant resin-based thin rods:

[0043] Fiber-reinforced high-temperature-resistant resin-based thin rods are prepared by pultrusion of continuous fiber bundles and high-temperature-resistant resins:

[0044] (1) Select 12k-T700 continuous carbon fiber bundles from Toray Corporation of Japan or Kevlar-3000D aramid fiber bundles from DuPont Corporation of the United States or 2400D ultra-high molecular weight polyethylene fiber bundles from Beijing Witton International Trade Co., Ltd. as continuous fiber bundles. Epoxy resin or vinyl polyester with a glass transition temperature between 100 and 250°C is used as a high temperature resistant resin;

[0045] (2) Pultruding by pultrusion machine: the pultrusion machine includes a creel, an impregnation tank, a circular high-temperature die, a post-cur...

Embodiment 3

[0055] Example 3: Preparation method of fiber-reinforced composite material: First, a carbon fiber-reinforced thin rod with a diameter of 1mm was prepared by pultrusion process, wherein the carbon fiber was Toray T700, and the resin was high-temperature-resistant epoxy resin (glass transition temperature was 210° C.), and prepared The carbon fiber reinforced thin rod has a fiber volume content of 69%. Pass 25 bundles of fine carbon fiber reinforced thin rods through figure 2 The carbon fiber composite core is prepared by the process shown: control the ratio of the speed of the rotating guide rail to the pulling speed, and determine the winding angle of the carbon fiber thin rod along the pulling direction to be 10 degrees; before the carbon fiber reinforced thin rod enters the rotating guide rail, first pass through the adhesive tank, After passing through the fixed guide rail, the excess adhesive and air bubbles are squeezed out; the continuous glass fiber bundle (continuous...

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Abstract

The invention aims at providing a fibre-reinforced compound material core and a preparation method thereof. The fibre-reinforced compound material core comprises an inner structure and an outer-layer insulating structure, wherein the inner structure is formed by bonding a plurality of parallel or spirally twisted fibre-reinforced resin-based fine rods with high-temperature resistance, the outer-layer insulating structure is a non-conductive resin coating with high-temperature resistance or a non-conductive fibre-reinforced resin layer with high-temperature resistance, and the thickness of the outer-layer insulating structure is 10 to 40 percent of the diameter of a conductor core; and moreover, the thickness along the perimeter is uniform. The fibre-reinforced resin-based fine rods with the high-temperature resistance pass through a wedge-shaped opening die injected with an adhesive; and the fibre-reinforced resin-based fine rods with the high-temperature resistance are bonded together by the adhesive, are coated with a fibre-reinforced resin compound material layer or a resin coating, pass through a high-temperature opening die and are solidified and formed. According to the fibre-reinforced compound material core and the preparation method thereof, the transverse shear resistance, the compression resistance, the toughness and the fatigue resistance are obviously enhanced, the defects that a traditional carbon-fibre compound core is crisp in property, is easy to break off, is ruptured in the use of an aluminum stranded wire, and the like are avoided, and the safety performance and the service life of the fibre-reinforced compound material core are greatly enhanced.

Description

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Claims

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Application Information

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Owner ZHEJIANG ZHONG JU COMPOSITE MATERIAL CO LTD
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