Connection method for carbon fiber yarns and metal sheet for heating

一种碳纤维丝、连接方法的技术，应用在加热元件、欧姆电阻加热零部件等方向，能够解决烧蚀、连接处温度高、易被氧化等问题，达到避免电阻过大、提高性能稳定、方法科学合理的效果

Active Publication Date: 2012-03-14
JIANGSU YUEKE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the longitudinal strength of carbon fiber is much higher than its transverse strength, in the actual connection between carbon fiber filament and metal sheet, carbon fiber filament is easily broken, resulting in poor contact at the connection, excessive resistance, high temperature at the connection after power-on, and even burning. Eclipse
At the same time, the metal sheet at the joint is also easily oxidized in a long-term high-temperature environment
If the copper sheet is oxidized to copper oxide, since the resistivity of copper oxide is much higher than that of copper, the resistivity of the connection will rise sharply, causing excessive local resistance and high temperature, resulting in damage to the connection, which will not only affect wind power. The performance and service life of the blade mold, and there are certain risk factors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The present invention operates according to the following steps:

[0014] (1) Joint stock: 5 bundles of adjacent carbon fiber filaments at the end of the carbon fiber cloth are combined into one strand;

[0015] (2) Glue coating: evenly apply conductive glue mixed with curing agent at the contact between the ply carbon fiber filament and the metal sheet; the curing agent used is dimethylimidazole, and the conductive glue is bisphenol A epoxy resin mixed with silver powder;

[0016] (3) Felt wrapping: Wrap a layer of thin carbon fiber felt on the surface of the carbon fiber filament coated with conductive adhesive, so that the conductive adhesive can soak the thin carbon fiber felt;

[0017] (4) Sleeve: Put the dipped carbon fiber tow on the silver-plated copper clamp, and turn the clamping knob clockwise to clamp the carbon fiber bundle. When conductive glue flows from both ends of the clamp, Stop turning the knob when it's flowing.

[0018] (5) Curing: fix the clamp,...

Embodiment 2

[0020] The present invention can also operate according to the following steps:

[0021] (1) Joint stock: 8 bundles of adjacent carbon fiber filaments at the end of the carbon fiber cloth are combined into one strand;

[0022] (2) Glue coating: evenly apply conductive glue mixed with curing agent at the contact between the ply carbon fiber filament and the metal sheet; the curing agent used is dimethylimidazole, and the conductive glue is bisphenol A epoxy resin mixed with silver powder;

[0023] (3) Felt wrapping: Wrap two layers of thin carbon fiber felt on the surface of the carbon fiber filament coated with conductive adhesive, so that the conductive adhesive can soak into the thin carbon fiber felt;

[0024] (4) Sleeve: Put the dipped carbon fiber tow on the silver-plated copper clamp, and turn the clamping knob clockwise to clamp the carbon fiber bundle. When conductive glue flows from both ends of the clamp, Stop turning the knob when it's flowing.

[0025] (5) Curing...

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PUM

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Abstract

The invention relates to a connection method for carbon fiber yarns and a metal sheet for heating, which is characterized in that the method comprises the following steps of: 1) stranding: stranding 3-10 beams of adjacent carbon fiber yarns at the end of carbon fiber cloth into one strand; 2) coating adhesive: evenly coating conductive adhesive doped with curing agent at a position at which the stranded carbon fiber yarns are in contact with the metal sheet; 3) wrapping felts: wrapping 1-2 layers of thin carbon fiber felts on the surface of the carbon fiber yarns coated with the conductive adhesive to enable the conductive adhesive to infiltrate the thin carbon fiber felts; 4) sheathing: sheathing a metal sheet clamp on the carbon fiber yarns into which the conductive adhesive infiltrates, clockwise turning a clamping knob to tightly clamp the carbon fiber yarns until the conductive adhesive flows out of the two ends of the clamp; and 5) curing: fixing the clamp, placing at room temperature and controlling curing time to be 24-72h. Compared with the prior art, the connection method has the advantages of simplicity, effectiveness, economy, durability, even and firm connection position, stable and reliable performance and the like.

Description

technical field [0001] The invention relates to a connection method of mixed materials, in particular to a connection method of carbon fiber filaments for heating and metal sheets. Background technique [0002] The wind power blade mold involves the heating system. The heating system with carbon fiber cloth as the heating body gradually replaces the electric heating and water heating systems with uneven temperature control due to its advantages of high heating efficiency, uniform heating, and easy temperature control. Much attention. In the production process of wind power blade molds, it is necessary to connect the carbon fiber filaments at both ends of the carbon fiber cloth with the metal sheet evenly and firmly to ensure continuous and stable power supply. Since the longitudinal strength of carbon fiber is much higher than its transverse strength, in the actual connection between carbon fiber filament and metal sheet, carbon fiber filament is easily broken, resulting in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/08
Inventor 周利峰
Owner JIANGSU YUEKE NEW MATERIAL
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