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High-uniformity metallization method and equipment for large-tow fiber and large-tow fiber

A large tow and metallization technology, applied in the field of large tow fibers, can solve the problems of uneven metallization layer of large tow fibers, black cores of large tow fibers, affecting the use effect, etc., to avoid uneven diffusion and ensure The effect of uniformity and technical solution reduction

Active Publication Date: 2022-08-05
江西省纳米技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the current technical solution is applied to fiber electroplating and metallization of large tows, due to the large number of tows in the fiber and the correspondingly large fiber diameter, the tows in the fiber have the problem of poor dispersion , poor dispersion leads to uneven current density distribution during electroplating, and uneven diffusion of ions in the electroplating solution, which in turn leads to the "black heart" phenomenon of large tow fibers in direct electroplating metallization, that is, as Figure 6 As shown, some of the fibers in each bundle were not plated with metal during the electroplating process, and the original color (black) of the fiber or the uneven current caused the partial coating to be black, which eventually brought about a significant loss of the metallized layer of the large tow fiber. Uneven, affecting its use effect

Method used

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  • High-uniformity metallization method and equipment for large-tow fiber and large-tow fiber
  • High-uniformity metallization method and equipment for large-tow fiber and large-tow fiber
  • High-uniformity metallization method and equipment for large-tow fiber and large-tow fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0065] This embodiment provides a highly uniform metallization method of 12k carbon fiber, using such as figure 1 Equipment shown, specifically:

[0066] The electroplating solution in the electroplating tank 5 is a commercially available nickel plating solution, and it consists of: nickel chloride, hydrochloric acid, pure water, activator;

[0067] The above-mentioned carbon fibers that have undergone high-temperature degumming pretreatment are continuously entered into the electroplating tank 5, and the carbon fibers are in contact with the soft guide rollers 1 and the electrode guide rollers 2 on both sides of the electroplating tank 5, and are indirectly electrically connected to the negative electrode of the electroplating power supply 6. The carbon fiber is used as a cathode to deposit a metal nickel layer in the electroplating solution, and the current density is 2A / dm2;

[0068] In the electroplating solution, the carbon fibers are continuously passed through 4 sets ...

Embodiment 2

[0072] This embodiment provides a highly uniform metallization method of 12k carbon fiber, using such as figure 1 The equipment shown, the process is basically the same as the embodiment 1, the only difference is:

[0073] The first group and the last group of flattening guide rollers 3 are not arranged at the edge of the electroplating tank 5 , but are arranged in the middle section away from the edge of the electroplating tank 5 together with the middle flattening guide roller 3 .

[0074] The high uniformity metallized large tow fibers prepared in this example have the same properties as those in Example 1. However, in this example, the loss rate of the electroplating solution is 8 L / day, which is significantly greater than that in Example 1.

Embodiment 3

[0076] This embodiment provides a high uniformity metallization method of 12K PE fiber, using such as figure 1 For the equipment shown, the process is basically the same as that of Example 1.

[0077] The metallized multifilament tow PE fibers prepared in this example also have high uniformity and flatness of the coating, and have no "black heart" phenomenon.

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Abstract

The invention discloses a high-uniformity metallization method and equipment for large-tow fibers and the large-tow fibers. The high-uniformity metallization method comprises the following steps: carrying out continuous electrochemical deposition on large-tow fibers in an electroplating solution so as to coat the surfaces of tows contained in the large-tow fibers with metal coatings; and meanwhile, at least part of the large-tow fibers located in the electroplating liquid sequentially pass through a plurality of flattening devices, each flattening device flattens the large-tow fibers, and the cross sections of the large-tow fibers are made to be in a flat shape. According to the high-uniformity metallization method and equipment provided by the invention, the uniformity degree of large-tow fiber electroplating metallization is ensured, the black core phenomenon of large-tow fiber metallization in the prior art can be obviously avoided, the product quality is improved, and the product cost of unit tow is obviously reduced compared with that of a small-tow fiber metallization technical scheme.

Description

technical field [0001] The invention relates to the technical field of surface metallization, in particular to a method and equipment for high uniformity metallization of large tow fibers and large tow fibers. Background technique [0002] Deposition of metal layers on the surface of fiber materials to achieve fiber metallization has broad application prospects. [0003] For example, carbon fiber was born in the late 1950s, due to its unique excellent properties, such as high specific strength, high specific modulus, low density, high temperature resistance, radiation resistance, good toughness, good electrical and thermal conductivity, and small thermal expansion coefficient. performance, which has attracted widespread attention. Metal-based carbon fiber composites not only inherit the excellent properties of carbon fiber such as high specific strength, high specific modulus and good toughness, but also maintain the characteristics of the matrix metal, which has become a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/06C25D5/22C25D17/00C25D17/02C25D17/10
CPCC25D7/0607C25D5/22C25D17/10C25D17/02C25D17/00
Inventor 张永毅喻鹏段满玉汪细平张亦弛刘景
Owner 江西省纳米技术研究院
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