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

A viscose fiber, high-strength technology, applied in the field of textile fiber processing, can solve problems such as high cost, and achieve the effects of improving brittleness, increasing elongation, and high strength and 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 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 viscose fiber and preparation method and application thereof
  • Delustering high-strength viscose fiber and preparation method and application thereof
  • Delustering high-strength viscose fiber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] The high-strength viscose fiber involved in this embodiment is made of pulp raw materials with a polymerization degree of 650 to 1200, which are sequentially impregnated, ground, crushed, kneaded, depolymerized, yellowed, dissolved, filtered, defoamed, matured, spun Obtained after silk drawing and post-treatment, the high-strength viscose fiber meets:

[0097] Dry breaking strength ≥ 3.15 cN / dtex;

[0098] Wet breaking strength ≥ 1.70cN / dtex;

[0099]The strength required to produce 5% elongation in wet state is ≥0.55cN / dtex,

[0100] Dry elongation at break 15.0~19.0%;

[0101] Wet elongation at break 16.0~21.0%;

[0102] Crystallinity 40.0~45.0%;

[0103] The radial water swelling degree is 22-26%;

[0104] The content of matting agent is 0.8-5%.

Embodiment 2

[0106] The difference between this embodiment and embodiment 1 is: the high-strength viscose fiber involved in this embodiment also satisfies:

[0107] Whiteness ≥ 85%;

[0108] Linear density deviation rate≤±2.0%;

[0109] Residual sulfur≤7.0mg / 100g;

[0110] Length deviation rate≤±3.0%;

[0111] Ultra-long fiber rate ≤ 0.5%;

[0112] Double-length fiber≤1.0mg / 100g;

[0113] Defect ≤ 1.0mg / 100g.

Embodiment 3

[0115] A kind of preparation method of matting type high-strength viscose fiber, the steps are as follows:

[0116] A. Put the pulp raw material with a degree of polymerization of 650 on the feeder pulp first, set the feeding speed to 40kg / min, then put the raw material into the dipping tank, and grind it with a grinder to make a pulp with a concentration of 3%. Porridge, wherein the purpose of grinding is to open and disperse the fibers through mechanical action, thereby increasing the alkalization speed and alkalization rate of cellulose;

[0117] 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 o...

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Abstract

The invention discloses a delustering high-strength 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 viscose fiber meets the technical indexes that the dry breaking strength is not smaller than 3.15cN / dtex, the wet breaking strength is not smaller than 1.70cN / dtex, the strength for generating 5% of elongation in a wet condition is not smaller than 0.55cN / dtex, the dry breaking elongation is 15.0%-19.0%, 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 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 field of dense siro-spinning.

Description

technical field [0001] The invention relates to viscose fiber and its preparation and application, in particular to a matting high-strength 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 viscose fibers produced ...

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胡远成陈明付陈晓芳
Owner YIBIN GRACE GROUP CO LTD
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