Device for carbon fiber surface modification through rapid attaching of bi-phase carbon nanotube

Abstract

The invention provides a device for carbon fiber surface modification through rapid attaching of bi-phase carbon nanotube. The device is mainly composed of a carbon fiber sizing machine, a carbon nanotube electrode feeder and a high voltage power supply. The high voltage power supply is respectively connected to the carbon fiber sizing machine and the carbon nanotube electrode feeder. The carbon nanotube electrode feeder is composed of a bottom electrode cabin (1), a top electrode cabin (2), a top electrode feeding assembly (3), a bottom carbon nanotube electrode (4), a bottom electrode feeding assembly (5), a top carbon nanotube electrode (6), a left adapting shaft (7), a right adapting shaft (8), a reciprocating motion machine (9), a feed bin gate (11), a right bracket (17) and a left bracket (18). The carbon fiber sizing machine is composed of a size storage tank (13), a carbon fiber hoisting drum (14) and a carbon fiber conveying roller (12). The device has a good modification effect on carbon fiber, is simple and is convenient to control, and has high safety.

Description

technical field [0001] The invention relates to a device for modifying the surface of carbon fibers, in particular to a device for modifying the surface of carbon fibers by quickly attaching double-phase layer carbon nanotubes, and belongs to the field of micro-nano materials. Background technique [0002] In order to enhance the interfacial strength and fatigue resistance of carbon fiber in the matrix material, carbon nanotubes with excellent mechanical and thermal properties are attached to the surface of carbon fiber by physical or chemical means to increase the surface roughness of carbon fiber and the bond with the matrix material. Intensity, is considered a proven method. In order to achieve the above purpose, a variety of implementation methods have been successively developed and developed; among them, direct growth method, electrophoresis method and chemical grafting method are typical representatives. [0003] Specifically, the direct growth method uses carbon fib...

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Problems solved by technology

According to the reported data, this method has the best modification effect, and has the advantages of firm adhesion of carbon nanotubes, large amount of adhesion, and good orientation; but at the same time, this method has high production costs, complicated operating environment, and low yield Disadvantages such as difficulty in expansion have always restricted its development, and it is difficult to meet the actual needs of industrialization

The common feature of the electrophoresis method and the chemical grafting method is to disperse the carbon nanotubes in the liquid phase environment in a certain way, make a solution of a certain concentration and then associate with the carbon fiber. Compared with the former method, their production The efficiency has been improved, but the adhesion amount and density of carbon nanotubes are low, and affected by the surface tension of the liquid, the carbon nanotubes tend to be "lodging" and it is difficult to produce an anchoring effect in the matrix. Therefore, the improvement of the actual performance of the product is often unsatisfactory

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