Preparation method of magnetic paper by in-situ method

Abstract

The invention relates to a method for making magnetic paper by in-situ composing, in particular to a method that magnetic paper pulp fibers are prepared by the in-situ composing and then the magnetic paper pulp fibers are made into the magnetic paper. The method is characterized in that chemical wood pulp is scattered into distilled water to prepare a sizing agent suspending agent which is put into a heating container and is stirred evenly; the sizing agent suspending agent which is heated is added with ferrous chloride and anhydrous ferric chloride; sodium hydroxide and polyethyleneimine are added and are stirred in an oxygen-free environment; afterwards, the mixture is washed to remove the magnetic particles on the surface of sizing agent fibers of the chemical wood pulp in order to obtain the magnetic paper pulp fibers; the prepared magnetic paper pulp fibers are dehydrated to obtain wet magnetic paper sheet which is pressed and dried to obtain the magnetic paper. The method has simple facilities, moderate reaction conditions, low price of the raw materials, simplified technique process, short reaction time, simple operation, easy industrial production, easy control of core formation in the reaction process and high degree of purity of products.

Description

A kind of preparation method of in-situ composite method magnetic paper technical field The invention relates to a method for preparing magnetic paper by in-situ compounding method, in particular, magnetic pulp fibers are prepared by in-situ compounding method, and then the magnetic pulp fibers are made into magnetic paper. Background technique At present, non-renewable resources are increasingly scarce, and synthetic polymer functional materials are facing the situation of raw material depletion. How to use the inherent advantages and characteristics of cellulose fibers, and adopt new technologies and new theories to endow cellulose fibers with new functions and better Synthesizing new cellulose functional materials with excellent performance is the current field of cellulose science research and an important content in the field of materials research. Composite magnetic nanoparticles and cellulose fibers to develop high-performance cellulose magnetic nanocomposite fibers...

AI Technical Summary

Problems solved by technology

There are also some domestic researchers who use the in-situ composite method to prepare magnetic paper, but the magnetic pro