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A spinning forming method of non-dyed flame-retardant viscose colored filament

A filament and spinning technology, applied in the field of wet spinning forming technology, can solve the problems of poor curing effect of flame retardants, inevitable environmental pollution, weak coloring, etc., and achieve good coagulation effect and curing effect in acid bath And good, the effect of omitting the dyeing process

Inactive Publication Date: 2016-09-07
SOL FLAME RETARDANT FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the coexistence of colorants and flame retardants in the spinning mixture, there will be various effects (such as coloring is not firm, the curing effect of flame retardants is not good, and the acid bath coagulation is poor, etc.), the flame retardant fibers currently produced and sold are all Colorless (primary color) basic fiber, after weaving into cloth, it can be dyed (dyed) as needed
In this case, printing and dyeing wastewater and printing and dyeing products will inevitably pollute the environment and cause harm to human health.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] (2) Preparation of spinning acid bath

[0034] Use pure water to prepare spinning acid bath, including sulfuric acid 85-115g / L, zinc sulfate 9-12g / L, sodium sulfate 222-268g / L. Keep the acid bath temperature at 38-48°C.

[0035] (3) Spinning and forming drafting

[0036] The spinning mixture is reacted with the acid bath in the acid bath of the spinning machine through the metering pump and the spinneret, solidified and formed, the spinning speed is 75-80m / min, the draft of the spinneret is 10-15%, and the spinning disc The amount of drafting is 20-25%, and the amount of drafting in the back road is 5-10%.

[0037] (4) Washing, centrifugation and curing process

[0038] After being drawn, the colored filaments of flame-retardant viscose fiber are washed and centrifuged, and then enter the process of rinsing or pressure washing in the form of silk cakes, where they are cured. The temperature of the curing treatment liquid is 75-90° C., and the concentration of ...

Embodiment 1

[0041] Example 1: Non-dyed flame-retardant viscose red filament 250D / 60F

[0042] Preparation of color paste: take the red pigment and grind it ultra-finely until the particle size is ≤0.4 μm. Add 30% of the treated pigment, 6% of polyvinylpyrrolidone, and 64% of purified water into a colloid mill for grinding for 3 hours, and cool for later use.

[0043] Flame retardant liquid, red color paste and viscose are contacted and mixed according to a certain weight ratio; glue ratio: IIF glue (containing 8.2% of methyl fiber; also available from Beijing Saiolan Flame Retardant Fiber Co., Ltd.) 16OOOL; silicon nitrogen resistance Fuel 801 # 2360L; 10% sodium hydroxide solution 1200L; dispersant 803 # 200L; red color paste 300kg. The order of addition is: IIF glue --- dispersant 803 # ---(lye--flame retardant 801 # )---color paste. Then it is mixed mechanically to make it a homogeneous mixed colloid; then it is degassed and filtered, and it is sent to spinning through a pipeli...

Embodiment 2

[0044] Example 2: Non-dyed flame-retardant viscose blue filament 75D / 32F

[0045] Preparation of color paste: take the blue pigment and grind it ultrafinely until the particle size is ≤0.4 μm. Add 35% of the pigment after the above treatment, 4% of polyvinylpyrrolidone, and 61% of purified water into a colloid mill for grinding for 3 hours, and cool for later use.

[0046]Flame retardant liquid, blue color paste and viscose are contacted and mixed according to a certain weight ratio; glue ratio: IIF glue 16OOOL; silicon nitrogen flame retardant 801 # 2000L; 10% potassium hydroxide solution 1000L; dispersant 803 # 160L; blue color paste 100kg. The order of addition is: IIF glue --- dispersant 803 # ---(lye--flame retardant 801 # )---color paste. Then it is mixed mechanically to make it a homogeneous mixed colloid; then it is degassed and filtered, and it is sent to spinning through a pipeline under the action of power (pump or compressed air), and solidified in an acid b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a spinning forming method of non-dyed flame-retardant viscose colored filaments. The spinning forming method comprises the following steps: providing spinning mixed liquid prepared by mixing a silicon-nitrogen flame retardant, color paste and alpha cellulose glue; providing a spinning acid bath prepared by mixing sulfuric acid, zinc sulfate and sodium sulfate; deforming and filtering the spinning mixed liquid, feeding the spinning mixed liquid into the spinning acid bath by virtue of a metering pump and a spinning nozzle, and carrying out solidification forming and spinning drafting so as to obtain colored continuous filaments; providing a curing treatment liquid containing positive ions Ti<4+> and Ca<2+>; curing the colored continuous filaments; and respectively carrying out water washing, drying and packaging on the cured filaments, so as to obtain the finished colored filaments. According to the spinning forming method, a downstream dyeing procedure is omitted, so that the environmental pollution caused by spinning printing and dyeing wastewater as well as the injury caused by dyed products to human bodies are maximally reduced or avoided.

Description

technical field [0001] The invention relates to a wet spinning forming process. Background technique [0002] Whether synthetic fibers, viscose fibers or natural cotton fibers are easy to burn and cause fires, and flame-retardant fibers can solve these problems, especially the flame-retardant viscose fibers produced by adding flame retardants to viscose fibers can improve the fiber's ease of use. The characteristics of fire can avoid fire, reduce property and life damage, and also maintain the unique performance of viscose fiber's original comfort. [0003] Due to the coexistence of colorants and flame retardants in the spinning mixture, there will be various effects (such as coloring is not firm, the curing effect of flame retardants is not good, and the acid bath coagulation is poor, etc.), the flame retardant fibers currently produced and sold are all Colorless (primary color) basic fiber, dyed (dyeing) according to needs after weaving into cloth. In this case, printing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/07D01F1/04
Inventor 刘承修毕慎平
Owner SOL FLAME RETARDANT FIBER
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