FeCo alloy/CuO double-plating magnetic carbon fiber and preparation method and application

A carbon fiber and coating technology, applied in the field of FeCo alloy/CuO double-coated magnetic carbon fiber and preparation, can solve the problems of less research, and achieve the effects of simple process, optimized impedance matching and high production efficiency

Inactive Publication Date: 2012-08-22
江苏飞荣达新材料科技有限公司
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Problems solved by technology

Electroplating of single metals such as Ni, Fe, and Cu on the surface of carbon fiber has been reported. Ni-plated carbon fiber has been applied in the field of electromagnetic shielding, but there are few studies on the electroplating of magnetic alloy coating and double coating on the surface of carbon fiber.

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  • FeCo alloy/CuO double-plating magnetic carbon fiber and preparation method and application
  • FeCo alloy/CuO double-plating magnetic carbon fiber and preparation method and application
  • FeCo alloy/CuO double-plating magnetic carbon fiber and preparation method and application

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Embodiment Construction

[0018] Pretreatment of carbon fiber: firstly, continuous carbon fiber (polyacrylonitrile-based continuous carbon fiber, Dalian Xingke Carbon Fiber Co., Ltd., number DLXK2003, each bundle contains 12000 carbon fiber monofilaments, and the diameter of the monofilament is about 7 μm) is placed in a muffle furnace at 500 ° C Keep it warm for 15 minutes, and then immerse it in 40ml of nitric acid solution with a volume fraction of 50% for 1 hour for oxidation treatment.

[0019] The composition of the FeCo alloy plating solution is as follows: the concentration of ferrous sulfate and divalent cobalt sulfate is 90g / L, the concentration of boric acid is 30g / L, the concentration of cetyl sodium sulfate is 0.1g / L, and the mass fraction of pH value is 10 % dilute sulfuric acid solution to adjust to 3-4. The electroplating of FeCo alloy uses a high-purity iron plate with a purity of 99.99% as the anode, and the oxidized carbon fiber as the cathode, with a current of 0.5A, electromagnetic...

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Abstract

The invention relates to FeCo alloy / CuO double-plating magnetic carbon fiber and a preparation method and application. FeCo alloy and Cu plating are successively electroplated on the surface of the pretreated continuous carbon fiber by use of the traditional electroplating means, CuO plating is formed after thermal oxidation, and columnar CuO with diameter of about 100 nm is formed on the surface. The electromagnetic parameters of the carbon fiber are improved through the alloy / oxide double-plating; the modified magnetic carbon fiber has high-frequency and high-strength microwave absorption performance, and has microwave loss of less than -10 dB at the frequency band from 2-18 GHz; and when the frequency is 9.6 GHz, the composite material with thickness of only 1.6 mm shows the maximum microwave absorption valve of -47.56 dB. The magnetic carbon fiber provided by the invention has uniform and dense magnetic double-plating, is simple in preparation process, high in production efficiency and excellent in microwave absorption performance, and can be used as a novel low-density microwave absorption material.

Description

technical field [0001] The invention belongs to the field of microwave absorbing materials, in particular to a FeCo alloy / CuO double-coated magnetic carbon fiber, a preparation method and application. Background technique [0002] The conductivity of carbon fiber is between non-metal and metal, with small thermal expansion coefficient, low density, high strength and modulus, no creep, fatigue resistance, and corrosion resistance. It can be used as an excellent structural absorbing material. Theoretically speaking, good microwave absorption performance requires the material to have high electrical loss and magnetic loss, but carbon fiber itself is not magnetic. An efficient approach to performance. Compared with surface metallization methods such as sputtering, ion plating, metal powder spraying, metal coating, and electroless plating, the electroplating method has simple equipment, low cost, continuous production, and has a good application prospect. Electroplating of sing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/12D06M101/40
Inventor 万怡灶王雷
Owner 江苏飞荣达新材料科技有限公司
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