A kind of preparation method of graphene-coated conductive fiber

Abstract

The invention relates to a preparation method of a graphene coating conductive fiber. The preparation method comprises the steps that graphene oxide is assembled on a fiber by electrostatic interaction, and then subjected to reduction treatment to obtain the graphene coating conductive fiber, wherein the assembly is achieved by immersing the fiber with charges on the surface in a graphene oxide dispersion at a temperature of 10 to 30 DEG C for one or more times, the graphene oxide in the adjacent two immersed graphene oxide dispersions is oppositely charged each time, the soaking time is 5 to10 min each time, and post-treatment is conducted after each soaking; multiple soaking is 2 to 8 times; the conductivity of the obtained graphene coating conductive fiber is 10 to 1.5 multiply 10<3>S / m, and the conductivity remains above 95% or more after washing for 100 times. The preparation method is simple, the fiber coating efficiency is effectively improved by an electrostatic assembly method, the used coating layer is all graphene, the electrical conductivity and water washing performance of the fiber are significantly improved, and the preparation method of the graphene coating conductive fiber has a great application prospect.

Description

Technical field [0001] The invention belongs to the field of preparation of graphene conductive fibers, and relates to a method for preparing graphene coated conductive fibers. Background technique [0002] Smart fiber is an important direction for future fiber development. New electronic smart fiber based on the integration of electronic technology with sensing, communication, artificial intelligence and other technologies is one of the important varieties, and its basic unit is conductive fiber. However, most of the current synthetic fibers are not conductive. In order to make them conductive, most of them are modified with conductive materials such as metal / metal oxide particles, conductive polymers, and carbon nanomaterials. The modification methods in the prior art can be mainly divided into blending spinning and surface coating. Compared with blended spinning, the surface coating method is simple and easy. [0003] Graphene is a two-dimensional carbon nanomaterial that has ...

AI Technical Summary

Problems solved by technology

However, although the above method can coat the conductive material on the fiber, due to the poor binding ability, after washing, the conductive coating becomes less or disappears, and the conductivity is significantly deteriorated.