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Delustering high-strength low-elongation viscose fiber and preparation method and application thereof

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

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 basically a blend of modal and cotton, or directly use viscose (rayon) fiber to pretend to be modal

Method used

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  • Delustering high-strength low-elongation viscose fiber and preparation method and application thereof
  • Delustering high-strength low-elongation viscose fiber and preparation method and application thereof
  • Delustering high-strength low-elongation viscose fiber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] The high-strength and low-elongation viscose fiber involved in this embodiment is made of pulp raw materials, which are sequentially impregnated, ground, crushed, kneaded, depolymerized, yellowed, dissolved, filtered, defoamed, matured, spun and drawn, and post-treated. And obtain, after measuring, this high-strength low-elongation viscose glue fiber satisfies:

[0099] Dry breaking strength ≥ 3.2 cN / dtex;

[0100] Wet breaking strength ≥ 1.70cN / dtex;

[0101]The strength required to produce 5% elongation in wet state is ≥0.55cN / dtex,

[0102] Dry elongation at break: 13.0-16.0%;

[0103] Wet elongation at break 16.0~21.0%;

[0104] Crystallinity 40.0~45.0%;

[0105] The 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 high-strength low-elongation viscose fiber involved in this embodiment also satisfies:

[0109] Whiteness ≥ 85%;

[0110] Linear density deviation rate≤±2.0%;

[0111] Residual sulfur≤7.0mg / 100g;

[0112] Length deviation rate≤±3.0%;

[0113] Ultra-long fiber rate ≤ 0.5%;

[0114] Double-length fiber≤1.0mg / 100g;

[0115] Defect ≤ 1.0mg / 100g.

Embodiment 3

[0117] A kind of preparation method of matting type high-strength low-elongation viscose fiber, the steps are as follows:

[0118] A. Put the pulp raw material on the pulp feeding machine first, set the feeding speed to 40kg / min, then put the raw material into the soaking bucket, and grind it with a grinder to make a pulp porridge with a concentration of 3%. The purpose is to open and disperse the fibers through mechanical action, so as to increase the alkalization speed and alkalization rate of cellulose;

[0119] B. Send the pulp porridge prepared in step A to a press machine, and then send it to a pulverizer for crushing to obtain alkali cellulose, send the alkali cellulose to a kneading machine, and obtain a pulp porridge with a concentration of 30% after processing , in this step, the press can remove the excess lye, and the excess lye can be recycled. The treatment method is to use a filter with a filter screen of 60 mesh and a vacuum of –0.4MPa to remove the excess hemi...

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Abstract

The invention discloses a delustering high-strength low-elongation viscose fiber and a preparation method and application thereof. The delustering high-strength low-elongation viscose fiber is obtained by subjecting pulp materials to dipping, grinding, squeezing smashing, rubbing, depolymerizing, yellowing, dissolving, filtering, deaerating, ripening, spinning drawing and post-processing sequentially. The delustering high-strength low-elongation viscose fiber meets the technical indexes that the dry breaking strength is not smaller than 3.20cN / dtex, the wet breaking strength is not smaller than 1.70cN / dtex, the strength for generating 5% of elongation in wet condition is not smaller than 0.55cN / dtex, the dry breaking elongation is 13.0%-16.0%, the wet breaking elongation is 16.0%-21.0%, radial water swelling capacity is 22%-26%, and the content of a delustering agent is 0.8%-5%. The delustering high-strength low-elongation viscose fiber is a novel viscose fiber, is lower than a modal fiber in production cost, has great economic benefit and social benefit, and is mainly applied to the production fields of underwear and top-grade woven fabric.

Description

technical field [0001] The invention relates to viscose fiber and its preparation and application, in particular to a matting high-strength and low-elongation viscose fiber and its preparation method and application, belonging 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, hemp, etc., petroleum-based fiber raw materials represented by polyester, acrylic fiber, etc., and bio-based raw materials such as viscose fiber regenerated from natural cellulose materials. Fiber raw material. 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 growing needs of people's living standards; With the increasing awareness of functionality and environmental protection, more and more attention has been paid to visco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/12D01D5/12D01D5/06D06M11/53D06M11/76D06L3/02D06L4/13
Inventor 冯涛邓传东李蓉玲贺敏田启兵陈明付李春弟刘爱兵
Owner YIBIN GRACE GROUP CO LTD
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