Nanometer barium sulfate viscose flat yarn and preparation method thereof

Abstract

The invention provides a nanometer barium sulfate viscose flat yarn and a preparation method thereof. The preparation method comprises the following steps of A, yellowing, dissolving, defoaming and filtering alkali cellulose, so as to obtain cellulose sulfonate; aging the cellulose sulfonate for 10 to 15h, so as to obtain a viscose solution; adding a titanium dioxide solution into the viscose solution, wherein the amount of titanium dioxide accounts for 1 to 3% of the amount of methylcellulose in the viscose, so as to obtain a matt viscose solution for further use; B, filtering the matt viscose solution obtained in step A, filtering, and adding a nanometer barium sulfate solution, wherein the amount of barium sulfate accounts for 1 to 5% of the amount of methylcellulose in the matt viscose solution, so as to obtain a spinning solution; C, enabling the spinning solution obtained in step B to spray out via flat holes of a flat spinneret, sending into spinning bath, forming, drawing, and post-treating, so as to obtain the nanometer barium sulfate viscose flat yarn. The method has the advantages that the problem of poor property of yarn due to poor spinnability of the spinning solution after adding of the barium sulfate in the prior art is solved, and the prepared flat yarn can reach the function of resisting radiation of X and gamma rays.

Description

technical field [0001] The invention relates to a flat yarn, in particular to a nano barium sulfate viscose flat yarn and a preparation method thereof. Background technique [0002] As a material with cost advantages, barium sulfate has gradually expanded its application range. In recent years, it has been gradually applied to the chemical fiber industry. For example, a kind of X-ray radiation-proof cellulose fiber and its preparation method (application number: 201210163246.1) is to make the particle size ≤ 3μm The barium sulfate powder is prepared into a barium sulfate emulsion slurry in a water-miscible organic dispersion medium, and then the barium sulfate emulsion slurry is added to the The xantho-dissolved viscose solution is uniformly mixed, and then the X-ray radiation-proof cellulose fiber is obtained by spinning in a spinning coagulation bath, drawing and post-processing. In this patent, barium sulfate is added to viscose at a ratio of 10% to 50% for short fiber s...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of poor spinnability of the spinning solution and difficulty in industrial production when barium sulfate is added to viscose dissolution to produce viscose fibers resistant to X and gamma rays in the prior art, and provides a nano barium sulfate viscose Flat yarn and its preparation method, the method is by adding specially treated barium sulfate into the dull viscose solution containing titanium dioxide in a specific amount to obtain spinning solution, and the spinning solution is specifically used for spinning flat yarn, It solves the problem of poor spinnability of the spinning solution after barium sulfate is added in the prior art, and the poor performance of the obtained filaments, and ensures that the obtained flat filaments have the effect of preventing X and γ-ray radiation