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A kind of composite core and preparation method thereof

A technology of composite core and thermoplastic polymer, which is applied in the field of composite core, can solve the problems of irreparable damage, high maintenance cost, and non-recyclability of thermosetting composite core, and solve the problem of non-recyclability. The effect of low maintenance cost

Active Publication Date: 2019-02-19
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of irreparable damage, non-recyclable utilization and high maintenance cost of the above-mentioned thermosetting composite core, and propose a composite core and its preparation method, which adopts thermoplastic material as the matrix, can be melted and molded again after heating, and has the advantages of reversible damage Restoration, raw materials can be recycled, etc.

Method used

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  • A kind of composite core and preparation method thereof
  • A kind of composite core and preparation method thereof
  • A kind of composite core and preparation method thereof

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preparation example Construction

[0027] In addition, in a specific embodiment, a composite core preparation method, the method steps include: 1) carbon fiber and thermoplastic polymer nanofiber blended yarn is gathered into a carbon fiber circular rod through a cluster; 2) carbon fiber circle Wrap the glass fiber and thermoplastic polymer nanofiber blended yarn on the shaped rod and cool it to get the finished product.

[0028] Preferably, in a specific embodiment, the step 1) carbon fiber and thermoplastic polymer nanofiber blended yarn tow 1 is dried by a dryer 2, and then pultruded outward through a carbon fiber core layer collector 3 The carbon fiber round rod body.

[0029] Preferably, in a specific embodiment, the step 2) uses the tow guide 4 to introduce the glass fiber and thermoplastic polymer nanofiber blended yarn tow 5 into the glass fiber layer collector 6 to form The fiber layer is wrapped around the carbon fiber round rod body, and then enters the high-temperature molding mold zone 7 to melt a...

Embodiment 1

[0035] Choose composite core preparation raw material, by volume percentage, the blended fiber yarn of 65% carbon fiber and 35% thermoplastic polyetherimide (PEI) nanofiber, the blending of 65% glass fiber and 35% thermoplastic polyetherimide nanofiber yarn. Among them, the diameter of PEI nanofiber is 350nm, and the molecular chain of PEI includes the following structure:

[0036]

[0037] The glass transition temperature of PEI is 199°C, the initial decomposition temperature is 539°C, the tensile strength is 94MPa, the tensile modulus is 3.2GPa, and the elongation at break is 5.2%. Its properties meet the requirements of composite core matrix materials.

[0038] After the carbon fiber and thermoplastic polymer nanofiber mixed fiber yarn tow 1 is dried by the dryer 2, it is pultruded outward through the carbon fiber core layer collector 3 to form a carbon fiber round rod; After fiber and thermoplastic polymer nanofiber blended yarn tow 5 is introduced into the glass fiber...

Embodiment 2

[0043]Select the composite core preparation raw material, by volume percentage, the blended yarn of 60% carbon fiber and 40% thermoplastic polyetherimide (PEI) nanofiber, the blending of 60% glass fiber and 40% thermoplastic polyetherimide nanofiber yarn. Among them, the diameter of PEI nanofiber is 350nm, and the molecular chain of PEI includes the following structure:

[0044]

[0045] The glass transition temperature of PEI is 210°C, the initial decomposition temperature is 535°C, the tensile strength is 83MPa, the tensile modulus is 2.6GPa, and the elongation at break is 5.8%. Its properties meet the requirements of composite core matrix materials.

[0046] After the carbon fiber and thermoplastic polymer nanofiber mixed fiber yarn tow 1 is dried by the dryer 2, it is pultruded outward through the carbon fiber core layer collector 3 to form a carbon fiber round rod; After fiber and thermoplastic polymer nanofiber blended yarn tow 5 is introduced into the glass fiber la...

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Abstract

The invention provides a composite core and a preparation method thereof. The mixed yarn of thermoplastic polymer nanofibers, carbon fibers and glass fibers is used as a raw material. The preparation process comprises the steps that 1) carbon fibers and thermoplastic polymer nanofiber mixed yarn are collected into a carbon fiber round bar body through a buncher; and 2) glass fibers and thermoplastic polymer nanofiber mixed yarn wrap the carbon fiber round bar body to form a profile, and the profile is cooled and shaped to form a finished product. According to the composite core and the preparation method thereof, the problems of common composite core raw material recovery, irreversible damage and the like are creatively solved; and the composite core has the advantages of high tensile and bending performance and stable high temperature operation.

Description

technical field [0001] The invention relates to a composite core, in particular to a composite core and a preparation method thereof. Background technique [0002] Composite core wire has excellent properties such as high strength, high conductivity, large current carrying capacity, small linear expansion coefficient, small sag, and light weight. Its application in new transmission and distribution lines can reduce the number and height of poles and towers, and save the land for line corridors to the greatest extent, so it can reduce the comprehensive cost of transmission and distribution lines, save land resources, and protect the ecological environment; in addition, it can expand and transform existing transmission lines. Without changing the existing towers and power transmission and distribution facilities, it directly replaces the traditional ordinary steel-cored aluminum stranded wire; the composite core wire can realize large-span power transmission across rivers and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/17H01B13/30
Inventor 杨青陈新何州文兰逢涛刘辉
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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