Preparation method and preparation device of conductive chemical fiber

Abstract

The invention provides a preparation method for conductive chemical fibers. The preparation method comprises the following steps: adsorbing chemical fibers to be treated through aniline gas and then performing polymerization reaction under the plasma condition to obtain the conductive chemical fibers. The invention further provides a preparation device for the conductive chemical fibers. The preparation device comprises an aniline gas generator and a plasma polymerization reactor; the chemical fibers to be treated sequentially pass through the aniline gas generator and the plasma polymerization reactor. According to the preparation method and the preparation device, the chemical fibers to be treated are adsorbed through the aniline gas and then the polymerization reaction is performed under the plasma condition, so that the in situ polymerization of aniline on the chemical fibers to be treated is realized; complex pretreatment is eliminated and the addition of oxidant is avoided and the like; the preparation method and the preparation device have the advantages of high reaction speed, simple preparation process, convenience in operation and control, less consumption of reagent, low preparation cost and no waste water; besides, the conductive chemical fibers prepared by the preparation method and the preparation device disclosed by the invention have good conductive performance; a conductive polyaniline coating is uniform and firm in bonding force.

Description

technical field [0001] The invention belongs to the technical field of conductive fibers, and in particular relates to a method for preparing conductive chemical fibers and a preparation device thereof. Background technique [0002] Conductive fiber is a functional fiber that eliminates static electricity through electron conduction and corona discharge. It has good conductivity and durability, and has a wide range of applications in industrial and civil fields. The conductive fabric made of conductive fiber has excellent functions such as electric conduction, heat conduction, shielding, and electromagnetic wave absorption. It is widely used in conductive mesh and conductive work clothes in the electronics and electric power industries; , aerospace, and electromagnetic frequency shields in the precision electronics industry, etc. [0003] Conductive fibers are divided into metal-based conductive fibers, carbon black-based conductive fibers, conductive polymer fibers and met...

AI Technical Summary

Problems solved by technology

Taking polyaniline as an example of a conductive fiber with a conductive coating, the preparation method is as follows: immerse the ordinary fiber in an aniline acidic medium containing a swelling agent and a catalyst containing copper ions, and then polymerize after dipping in an oxidizing agent solution to obtain a conductive fiber. Not only the preparation process is complicated, but also consumes a lot of reagents and produces a lot of waste water

Especially for chemical fibers that are difficult to modify such as polyester and acrylic fibers, this method not only consumes a large amount of reagents and produces a large amount of waste water, but also has uneven deposition of aniline, resulting in uneven polyaniline coating in the conductive fibers, poor bonding fastness and conductivity. Poor ability

[0005] In order to improve the bonding fastness between polyaniline and processed chemical fibers, such as polyester (PET), acrylic fiber (PAN), etc., and to improve the electrical conductivity of composite fibers, some people use low-temperature plasma pretreatment on polyester or acrylic fibers first, and then use The wet chemical method is used to oxidize and polymerize aniline to form a polyaniline conductive coating. The conductive polyaniline acrylic fiber composite fiber prepared by this method has the characteristics of good electrical conductivity and excellent antistatic performance. However, in the wet preparation process, the solution Aniline monomer, acidic medium and oxidant are indispensable. Not only the pretreatment is complicated, the reaction time is long, the reagent consumption is large, but also a large amount of waste water is generated.

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