Novel method for preparing ion exchange fiber by graft copolymerization

Abstract

The present invention relates to co-irradiation grafting modification and functional reaction process of preparing ion exchange fiber on the basis of synthetic fiber. The co-irradiation grafting copolymerization reaction process is controlled in homopolymer production to raise grafting efficiency, and has proper cross-linking agent is added to raise the mechanical performance of the fiber, and the ion exchange fiber passing through the functional reactions has relatively high exchange capacity. The ion exchange fiber the present invention prepared has great exchange capacity, fast exchange speed, short regeneration time, high stability, simple production process, low cost and other advantages, and may be used widely in environment protection, food decolorizing, wet metallurgy, water treatment, resource recovering and other fields.

Description

field of invention [0001] The invention relates to a new method for preparing ion exchange fibers based on synthetic fibers through co-irradiation grafting modification and multiple functional reactions. Background technique [0002] New fibers with different functional groups can be prepared by fiber modification and functionalization reactions. There are two main methods for preparing ion exchange fibers: one is to copolymerize or blend units or polymers that can be converted into ion exchange groups with fiber-forming units or polymers, and then spin them into fibers; the other is to The inert matrix of natural or synthetic fibers is modified by chemical initiation or radiation initiation. For example, CN1210763A discloses a manufacturing method and application of ion exchange fibers, which uses chemical initiation. The first type of preparation method has complex process steps, high production cost, and long production cycle; in the second type of method, chemical graft...

AI Technical Summary

Problems solved by technology

However, co-irradiation will inevitably lead to homopolymerization of monomers and affect the grafting effect, so there is no practical application in the production of ion exchange fibers so far.