Preparation method of oxidized graphene polypropylene functional fiber

Abstract

The invention discloses a preparation method of an oxidized graphene polypropylene functional fiber. The preparation method comprises the following steps: firstly, modifying oxidized graphene with alkyl group amine oxide to obtain alkyl group functionalized functional oxidized grapheme which is high in specific surface area and high in alkylation; performing slicing with polypropylene, performing mixing through a high-speed intermixer, and then performing melting composite processing through a twin-screw so as to obtain oxidized graphene-polypropylene master batches; drying the master batches, melting and spinning so as to prepare the oxidized graphene polypropylene functional fiber. The method disclosed by the invention solves the problems that the oxidized graphene composite polypropylene wire drawing process is unstable, the fiber forming degree is low, the fiber tenacity is low and the functions are single, the oxidized graphene composite polypropylene fiber obtained through melting and spinning has good mechanical properties, and has functions of resisting bacteria, resisting mites, resisting ultraviolet radiation, resisting static electricity and the like. High-grade functional polypropylene fiber is developed, and a new application field is developed for the polypropylene fiber.

Description

technical field [0001] The invention relates to the field of fiber materials, in particular to a method for preparing graphene oxide polypropylene functional fibers. Background technique [0002] In the preparation of nanocomposites, graphene oxide with two-dimensional flakes and very high mechanical properties will be the best choice for the reinforcement phase; its reinforcement effect is not only comparable to that of clay, montmorillonite and other reinforcement phases, but also has Effects that cannot be achieved by soil. However, due to the influence of graphene oxide's own structure, its surface energy is very high, which makes it prone to deformation: a series of problems such as curling, stacking and agglomeration of graphene oxide sheets. If the compatibility between graphene oxide and nanocomposite fiber matrix material is poor, graphene oxide will be dispersed unevenly in nanocomposite fiber matrix material, causing graphene oxide sheets to curl or form agglomer...

AI Technical Summary

Problems solved by technology

However, it has certain disadvantages: First, due to its strong polarity, graphene oxide has extremely limited dispersibility in non-polar solvents (xylene and ethanol), so the recombination efficiency is extremely limited.

However, its existing problems are: mechanically modified graphene oxide is limited by the small functional groups of graphene oxide itself, and the high-energy process of nodular graphite will accelerate the stacking of graphene oxide, and in addition, damage the particle size of graphene oxide sheets is irreversible

However, the problem with it is that when the aminoalkyltrialkoxysilane is reacted for surface modification, the grafting modification effect will be better under anhydrous conditions. The impact of dispersion is great, and the multi-stage modification process also limits its large-scale preparation and modification, which is in sharp contrast to the extremely fast modification in the water system in this patent

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