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A method for improving the washing resistance of organosilicon nitrogen flame-retardant fiber

A flame-retardant fiber and silicone technology, applied in the chemical post-treatment of cellulose/protein artificial filaments, artificial filaments made of viscose, etc., can solve the problem of high cross-linking agent fixation, achieve low loss rate, and process The effect of stable control and simple operation method

Inactive Publication Date: 2018-09-11
SOL FLAME RETARDANT FIBER
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to meet the standard of alkali washing resistance in the current production method, the consumption of fixed crosslinking agent is very high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the production method steps of organosilicon nitrogen flame retardant fiber, the viscose after the secondary filtration is mixed with flame retardant additives and flame retardants and then spun into shape. The pH value of the thread is adjusted from 3 to 5 to 7 ± 0.5, and the pH value of the fiber is neutral when entering the fixed crosslinking zone. Cross-linking bath 20wt% and take the method of continuously adding fixed cross-linking agent to ensure this concentration), cross-linking reaction at 80°C for 15 minutes, then washing, oiling and drying.

[0017] See table 1 for sampling test alkali washing resistance data

Embodiment 2

[0019] According to the production method steps of organosilicon nitrogen flame retardant fiber, the viscose after secondary filtration is mixed with flame retardant auxiliary agent and flame retardant and then spun into shape. The pH value of strip is adjusted to 7 ± 0.5 by 3~5, and the pH value of fiber is neutral when entering fixed cross-linking zone, and fixed cross-linking agent: pure water=25:75 (that is, fixed cross-linking agent accounts for fixed cross-linking 25wt% in the joint bath and the method of continuously adding a fixed cross-linking agent to ensure this concentration), cross-linking reaction at a cross-linking temperature of 80°C for 15 minutes, then washing, oiling, and drying.

[0020] See table 1 for sampling test alkali washing resistance data

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PUM

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Abstract

The invention discloses a method for improving the wash resistance of organic silicon nitrogen fire resistant fibers. The method is characterized in that in the immobilization cross-linking procedure in the production process of organic silicon nitrogen fire resistant fibers, the PH value of an immobilization cross-linking bath is maintained to be 6.0-8.0. The method is used for further reducing the loss rate of a fire retardant of organic silicon nitrogen fire resistant regenerated cellulose fibers in high-temperature alkali wash. The method overcomes the defect that the concentration of an immobilization cross-linking agent needs to be improved to ensure the effect of an immobilization cross-linking reaction under the acid condition, and is easy to implement and stable in process control. Obtained fire resistant fibers are good in alkali-wash resistance, and the loss rate of the fire retardant in alkali wash is low.

Description

technical field [0001] The invention relates to a method for improving the washing resistance of organic silicon nitrogen flame-retardant fibers, which belongs to the field of textile products. Background technique [0002] Fixing crosslinking reaction is an important link in the production of silicon nitrogen flame retardant viscose fiber. fuel loss rate. The existing technology for the production of silicon-nitrogen flame-retardant viscose fibers is very mature, and the various properties of silicon-nitrogen flame-retardant viscose fibers have reached or even exceeded those of phosphorus-based flame-retardant viscose fibers, such as CN 104032401 B. However, in order to meet the standard of alkali washing resistance in the current production method, the fixed crosslinking agent consumed is very high. Contents of the invention [0003] The purpose of the present invention is to provide a method for improving the washing resistance of organic silicon nitrogen flame retard...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08D01F11/02
CPCD01F2/08D01F11/02
Inventor 胡金龙冉国庆
Owner SOL FLAME RETARDANT FIBER
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