Method for producing fire-retardant anti-melt viscose fibers

A viscose fiber and manufacturing method technology, applied in the direction of single-component cellulose rayon, cellulose/protein rayon chemical post-treatment, fiber chemical characteristics, etc., can solve the problem of high cost and toxicity of flame-retardant viscose fiber Large, serious pollution and other problems

Inactive Publication Date: 2010-10-06
HANGZHOU AUTOON ENVIRONMENTAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The flame-retardant viscose fiber produced in the...

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The pulp is alkalized once by immersion in 230g / l NaOH solution, the concentration of the porridge is 4.5%, the immersion temperature is 50° C., and the first immersion time is 1.0 hour. After being squeezed, it is soaked and alkalized by 160g / l NaOH solution for the second time. The concentration of the porridge is 4.0%. Content2After yellowing reaction for 45 minutes, cellulose xanthate was formed. After yellowing, 5 g / l NaOH solution was added to dissolve at 5°C. After the cellulose viscose is dissolved, it is then filtered, defoamed, matured and other processes. Among them, the viscose is filtered by KKF filter three times, and the pressure difference between the inlet and outlet of the filter is 0.35Mpa; the viscose is degassed by continuous rapid degassing Foaming, the temperature difference ΔT between the entry and exit of the viscose is 5°C, the vacuum degree of defoaming is ≤30mbar, and the air bubbles in the viscose are removed; the aging of the viscose is don...

Embodiment 2

[0037] The pulp is soaked and alkalized once with 240g / L NaOH solution, the concentration of the porridge is 4.8%, the soaking temperature is 52°C, and the soaking time is 0.8 hours. After pressing, it is soaked and alkalized twice with 170g / l NaOH solution , the concentration of the porridge is 4.5%, the dipping temperature is 48°C, and the dipping time is 0.3 hours. Alkali cellulose with a compression ratio of 3.0 was obtained after crushing again. The alkali cellulose was aged at 35° C. for 4 hours to obtain alkali cellulose with cupro ammonia viscosity of 60 mps. Add 7800kg alkali cellulose to 31% CS relative to the weight of first cellulose 2 The yellowing reaction was 1 hour to generate cellulose xanthate. After the yellowing was finished, add 2g / L NaOH solution to dissolve at 7°C. Environmentally friendly WS---801 nitrogen flame retardant produced by Hong Chemical Co., Ltd. After the cellulose viscose is dissolved, it is then filtered, degassed, matured and other pro...

Embodiment 3

[0039] The pulp was dipped and alkalized once through 235g / l NaOH solution, the concentration of pulp porridge was 3.8%, and the dipping temperature was 52°C. The immersion time was 0.7 hours. Alkali cellulose with a pressing ratio of 3.2 was obtained after pressing and crushing. The alkali cellulose was aged at 40° C. for 3.5 hours to obtain alkali cellulose with cupro ammonia viscosity of 65 mps. With 8000kg alkali cellulose and 32% CS added relative to the weight of first cellulose 2 Yellowing reaction 55min, generate cellulose xanthate, after yellowing finishes, add 6g / lNaOH dilute lye to dissolve at 8 ℃, add the relative 28% of first kind of cellulose weight in the dissolving process of cellulose xanthate by The environmentally friendly WS---802 silicon-based flame retardant produced by Changhong Chemical Co., Ltd. can obtain cellulose viscose with a cellulose content of 7.5% and NaOH 5.5%. After the cellulose viscose is dissolved, it is then filtered, degassed, mature...

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PUM

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Abstract

The invention discloses a method for producing fire-retardant anti-melt viscose fibers. The method comprises the process steps of quaternization, ageing reaction, yellowing reaction, dissolution of viscose glue, filtration, debubbling, maturation, wet-method spinning, drawing, refining and the like in sequence, a method of adding a silicon, phosphorus or nitrogen fire retardant in a process of producing the fiber is adopted, and the adding amount of the fire retardant is over 20 percent. The fire-retardant anti-melt viscose fibers produced by the method have high fire retardant effect and high tensile force.

Description

Technical field: [0001] The invention relates to a differentiated method for manufacturing flame-retardant and melt-resistant viscose fibers. Background technique: [0002] The fabric made of viscose fiber has excellent luster, softness, hygroscopicity, dyeability and color fastness. It is an environmentally friendly cellulose fiber that is easy to degrade, and the raw material comes from natural cellulose, which has a vast and huge raw material. source. [0003] In the case of continuous expansion of viscose fiber consumption, developing new functional viscose fiber varieties and further expanding the use of viscose fiber is the development direction of viscose fiber production. [0004] With the progress and development of society, in terms of public safety and personal safety, in order to reduce the loss of people and property caused by fires caused by flammable textiles, flame-retardant fibers have been applied and developed. The flame-retardant viscose fiber produced ...

Claims

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Application Information

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IPC IPC(8): D01F2/10D01F11/02C08B9/00D01D5/06D01D5/12
Inventor 冉国庆郑睿敏胡金龙
Owner HANGZHOU AUTOON ENVIRONMENTAL TECH CORP
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