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

A technology of carbon fiber and coating, applied in the direction of carbon fiber, fiber treatment, chemical instruments and methods, etc., can solve problems such as less research, and achieve the effect of simple process, increased absorption, and weakened reflection

Inactive Publication Date: 2011-08-17
江苏飞荣达新材料科技有限公司
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  • Claims
  • Application Information

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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: First, the continuous carbon fiber (polyacrylonitrile-based continuous carbon fiber, Dalian Xingke Carbon Fiber Co., Ltd., number DLXK2003, each bundle contains 12,000 carbon fiber monofilaments, with a diameter of about 7μm) in a muffle furnace at 500°C Incubate for 15 minutes, and then soak in 40ml of 50% nitric acid solution for 1 hour oxidation treatment.

[0019] The composition of the FeCo alloy plating solution is: the concentration of ferrous sulfate and cobalt dibasic sulfate are both 90g / L, the concentration of boric acid is 30g / L, the concentration of sodium cetyl sulfate is 0.1g / L, and the mass fraction of pH is 10 % Dilute sulfuric acid solution is adjusted to 3-4. For FeCo alloy electroplating, a high-purity iron plate with a purity of 99.99% is used as the anode, and the carbon fiber after oxidation treatment is used as the cathode. The current is 0.5A, electromagnetic stirring is performed at 35°C, and the electroplating time i...

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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, and particularly relates to a FeCo alloy / CuO double-plated magnetic carbon fiber and a preparation method and application thereof. Background technique [0002] The conductivity of carbon fiber is between non-metal and metal, with low 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 and magnetic loss, but carbon fiber itself is not magnetic, so through surface plating, a magnetic coating is obtained on the surface, which makes the carbon fiber material have magnetic loss An effective way of performance. Compared with surface metallization methods such as sputtering method, ion plating method, metal powder spraying, metal coating and electroless ...

Claims

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Application Information

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IPC IPC(8): D06M11/83D06M11/42C25D3/56C25D3/38C25D5/10C25D5/54C23C28/00C09K3/00D06M101/40
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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