Method and device for plasma enhanced anodic oxidation treatment of carbon fiber

Abstract

The invention relates to a method and device for treating carbon fibers through anodic oxidation based on plasma enhancement, and belongs to the technical field of carbon fiber surface modification. The method comprises the steps that the carbon fibers tightly adhere to an anode, the anode is not in contact with an electrolyte, a cathode is installed in a spray head of a spray gun, the electrolyteand a plasma arc generated by the cathode in the spray gun are sprayed out together from the spray head of the spray gun and sprayed on the surfaces of the carbon fibers, and a dense coating is formed on the carbon fibers under the combined action of the anodic oxidation and plasma. The method has the advantages that the process is simple, the cost is low, and the uniform, continuous and dense coating can be rapidly prepared on the carbon fibers; the device has the advantages that the structure is simple, the operation is easy, the cost is low, and the device is suitable for the continuous treatment of carbon fiber surfaces by small and medium-sized enterprises.

Description

technical field [0001] The invention relates to a treatment technology for carbon fiber surface modification, in particular to a plasma-enhanced anodic oxidation treatment method for carbon fiber and a device for treating carbon fiber, belonging to the technical field of carbon fiber surface modification. Background technique [0002] Carbon fiber has become a potential development direction for various applications due to its excellent properties, high specific modulus, low density, good thermal stability and high impact resistance. In recent years, there has been increasing interest in the development and research of carbon fiber materials. Especially under inert atmospheric conditions, carbon fibers can be used at extremely high temperatures. However, these applications have been severely limited due to the oxidation of carbon fibers in an oxygen-containing atmosphere above 500 °C. Preparing ceramic coatings on carbon fibers is one of the effective ways to improve their...

AI Technical Summary

Problems solved by technology

The anodic oxidation method is to use the metal or alloy to be treated as an anode, and under the corresponding electrolyte and specific process conditions, due to the action of an applied current, a uniform film is formed on the surface of the metal or alloy, thereby improving its corrosion resistance. resistance, enhanced wear resistance and hardness, the thickness of the film is several microns to hundreds of microns, but the cost of anodizing is high and the coating adhesion is poor. At the same time, the oxygen generated by the anode will damage the easily oxidized material and reduce its resistance. Oxidation and mechanical properties

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