Active carbon fibre and preparation thereof

Abstract

The invention relates to an activated carbon fiber and a preparation method thereof. The compositions in weight percentage of the activated carbon fiber are: 80 to 95 percent of fiber-forming polymer, and 20 to 5 percent of functional additive component, wherein the fiber-forming polymer can be polyacrylonitrile, modified polyacrylonitrile, polyvinyl alcohol or regenerated cellulose fiber; and the functional additive component can be a superfine absorbent of supporting metal with the average diameter of between 0.01 and 20 mu meter; and the supporting metal can be one of a silver ion, a copper ion or a zinc ion. The preparation method comprises the following steps: a base material fiber-forming polymer fiber containing the functional additive component is prepared first, wherein the base material fiber can be a polyacrylonitrile fiber, a modified polyacrylonitrile, a polyvinyl alcohol fiber or a regenerated cellulose fiber base fiber; and different physical activation treatments or / and chemical activation treatments are carried out according to different base material fibers to produce the activated carbon fiber corresponding to the base material.

Description

A kind of activated carbon fiber and preparation method thereof technical field The invention relates to activated carbon fiber technology, specifically a multifunctional activated carbon fiber with excellent antibacterial and adsorption properties and a preparation method thereof. Background technique At present, people pay more and more attention to their own health and environmental sanitation, and various adsorbent materials have been applied in the fields of water and air purification. Activated carbon fiber has small fiber diameter, high specific surface area, developed microporous structure, small pore size and narrow distribution, large adsorption capacity, fast adsorption and desorption speed, easy regeneration, and can be prepared into corresponding forms according to specific requirements, such as felt, Cloth, etc., easy to use and so on. There are many matrix materials for making activated carbon fibers, such as polyacrylonitrile, polyvinyl alcohol, viscose fi...

AI Technical Summary

Problems solved by technology

However, this method adsorbs and deposits silver on the matrix activated carbon fiber by impregnation, and the silver fastness of the deposited activated carbon fiber surface cannot be guaranteed. It is easy to fall off during use, and the efficacy loss is large, and the fallen silver will pollute the environment.