Delustering high-strength low-elongation viscose fiber preparation technology

A viscose fiber, high strength and low elongation technology, applied in the field of textile fiber processing, can solve the problems of high cost and achieve the effects of improving brittleness, increasing elongation, and reducing damage to elongation

Inactive Publication Date: 2015-08-12
YIBIN GRACE GROUP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of modal fiber textile technology, the modal in the market is bas

Method used

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  • Delustering high-strength low-elongation viscose fiber preparation technology
  • Delustering high-strength low-elongation viscose fiber preparation technology
  • Delustering high-strength low-elongation viscose fiber preparation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] A process for preparing matting high-strength low-extension viscose fiber. The pulp raw material is immersed in lye, after grinding, squeezing, pulverizing, and kneading, adding pure oxygen for directional polymerization reduction, removing the lye to obtain alkali cellulose. The alkali cellulose is yellowed and dissolved to obtain a cellulose sulfonate solution, and the cellulose sulfonate solution is filtered, defoamed, matured, spinning drawing and post-treatment to obtain high-strength and low-stretch viscose fibers. The viscose fiber prepared by this embodiment meets the following technical indicators:

[0100] Dry breaking strength≥3.10 cN / dtex;

[0101] Wet breaking strength≥1.60cN / dtex;

[0102] The strength required to produce 5% elongation in the wet state≥0.55cN / dtex,

[0103] Dry elongation at break 11.0~19.0%;

[0104] The wet elongation at break is 16.0~21.0%;

[0105] Radial water swelling degree is 22~26%;

[0106] The content of matting agent is 0.8-5%.

Embodiment 2

[0108] The difference between this embodiment and embodiment 1 is that the viscose fiber prepared according to the process of embodiment 1 also satisfies:

[0109] Whiteness≥85%;

[0110] Linear density deviation rate ≤±11.0%;

[0111] Residual sulfur≤12.0mg / 100g;

[0112] Length deviation rate≤±11.0%;

[0113] Super long fiber rate ≤0.5%;

[0114] Double length fiber≤4.0mg / 100g;

[0115] Defects ≤4.0mg / 100g.

Embodiment 3

[0117] A preparation process of matting high-strength low-extension viscose fiber, the steps are as follows:

[0118] A. Put the pulp raw material on the feeder meal first, set the feeding speed to 40kg / min, then add the raw material into the dipping bucket, after grinding by the grinder, make the porridge with a concentration of 3%. The purpose is to open and disperse the fiber through mechanical action, thereby increasing the alkalization speed and alkalization rate of cellulose;

[0119] B. The porridge prepared in step A is sent to a press, and after squeezing, it is sent to a pulverizer for pulverization to obtain alkali cellulose, which is sent to a kneader, and processed to obtain a porridge with a concentration of 30% In this step, the squeezer can remove the excess lye, and the excess lye can be recycled. The treatment method is to use a filter with a 60 mesh filter and a vacuum of -0.4MPa to remove the excess hemicellulose from the lye and recover it. Alkali fiber Vegeta...

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Abstract

The invention discloses a delustering high-strength low-elongation viscose fiber preparation technology. The delustering high-strength low-elongation viscose fiber preparation technology particularly includes the steps of dipping pulp materials in alkali liquor, grinding to form thick pulp, subjecting the thick pulp to grinding, smashing and rubbing, adding pure oxygen to perform orientated depolymerization, removing the alkali liquor to obtain alkali cellulose, subjecting the alkali cellulose to yellowing and dissolving to obtain a cellulose sulphonate solution, and subjecting the cellulose sulphonate solution to filtering, deaeration, ripening, spinning drawing and post-processing to obtain a delustering high-strength low-elongation viscose fiber. The delustering high-strength low-elongation viscose fiber is a novel viscose fiber, is lower than a modal fiber in production cost, and has great economic benefit and social benefit.

Description

Technical field [0001] The invention relates to viscose fiber and its preparation, in particular to a process for preparing a matt high-strength low-extension viscose fiber, and belongs to the technical field of textile fiber processing. Background technique [0002] At present, textile fiber raw materials are mainly divided into natural fiber raw materials represented by cotton and linen, petroleum-based fiber raw materials represented by polyester, acrylic, etc., and bio-based viscose fibers regenerated from natural cellulose materials. Fiber raw materials. At present, with the scarcity of land resources and the shortage of human resources, the cotton planting area is declining year by year, and cotton products will not be able to meet the increasing needs of people’s living standards; and with the declining oil reserves and people’s comfort in textiles, With the ever-increasing awareness of functionality and environmental protection, viscose fibers produced from renewable res...

Claims

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Application Information

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IPC IPC(8): D01F2/06C08B1/08C08B9/00
Inventor 冯涛邓传东李蓉玲贺敏田启兵陈明付陈晓芳罗克胜
Owner YIBIN GRACE GROUP CO LTD
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