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Fire resistant viscose fiber and preparation method thereof

A flame retardant viscose fiber and viscose technology, which is applied in the textile field, can solve the problems of poor alkali resistance and many loss of flame retardant components after washing, and achieve the effects of saving materials, good flame retardant performance and controllable preparation process.

Active Publication Date: 2018-05-15
HEBEI JIGAO CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicon-based flame-retardant fibers have poor alkali resistance, and there is a lot of loss of flame-retardant components after washing, so there are great limitations in popularization and application.

Method used

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  • Fire resistant viscose fiber and preparation method thereof
  • Fire resistant viscose fiber and preparation method thereof
  • Fire resistant viscose fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Bamboo pulp is used as raw material, and alkali cellulose is obtained through impregnation, pressing, crushing, aging and other process steps. Alkali cellulose contains 17.5% of alkali and 33.5% of α-cellulose (methyl cellulose);

[0038] Add the sodium silicate aqueous solution with a silicon dioxide concentration of 10% to the cellulose sodium sulfonate after the alkali cellulose has been yellowed, mix and dissolve it with the cellulose sodium sulfonate to form a flame-retardant cellulose viscose, and the addition of sodium silicate SiO 2 It is calculated as 25% of the weight of methyl fiber in the viscose solution, and after the steps of filtration, ripening, defoaming, and filtration, it is spun in a spinning bath. In the spinning bath, 110g / l of sulfuric acid, 8g / l of zinc sulfate, and 8g / l of sodium sulfate 320g / l, aluminum sulfate 10g / l, temperature 45°C, plasticized drawing, cutting, washing, desulfurization with sodium sulfite desulfurizer, oiling, drying to pr...

Embodiment 2

[0040] Using cotton pulp as raw material, alkali cellulose is obtained through impregnation, pressing, crushing, aging and other process steps. Alkali cellulose contains 17.5% of alkali and 33.0% of α-cellulose (methyl cellulose);

[0041] Add the sodium silicate aqueous solution with a silicon dioxide concentration of 13% to the sodium cellulose sulfonate after alkali cellulose yellowing, mix and dissolve it with sodium cellulose sulfonate to form a flame-retardant cellulose viscose, and the addition of sodium silicate SiO 2 It is calculated as 27% of the weight of methyl fiber in the viscose solution. After filtering, aging, degassing and filtering steps, it is spun in a spinning bath. In the spinning bath, 120g / l of sulfuric acid, 8g / l of zinc sulfate, and 8g / l of sodium sulfate 320g / l, aluminum sulfate 16g / l, temperature 43°C, plasticized drawing, cutting, washing, desulfurization with sodium sulfite desulfurizer, oiling, drying to prepare 2.22dtex×51mm flame retardant vis...

Embodiment 3

[0043] Bamboo pulp is used as raw material, and alkali cellulose is obtained through impregnation, pressing, crushing, aging and other process steps. Alkali cellulose contains 17.5% of alkali and 33.0% of α-cellulose (methyl cellulose);

[0044] Add an aqueous solution of sodium silicate with a silicon dioxide concentration of 15% to the spinning glue after the steps of filtration, aging, defoaming, and filtration using a syringe pump. The amount of sodium silicate is calculated as SiO 2 Calculated as 25% of the weight of methyl fiber in the viscose solution, spinning in the spinning bath, the sulfuric acid in the spinning bath is 122g / l, the zinc sulfate is 10g / l, the sodium sulfate is 325g / l, and the aluminum sulfate is 20g / l , the temperature is 45°C, and then plasticized and drawn, cut, washed, desulfurized with sodium sulfite desulfurizer, oiled and dried to prepare 3.33dtex×64mm flame-retardant viscose fiber.

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Abstract

The invention belongs to the technical field of textiles, and particularly relates to a fire resistant viscose fiber and a preparation method thereof. The preparation method of the fire resistant viscose fiber includes the procedures of impregnation, aging, yellowing, dissolving, filtering, defoaming, spinning, washing and desulfurization. When any procedure from dissolving to spinning is performed, sodium silicate is added into viscose solution and uniformly mixed with the viscose solution. By the preparation method of the fire resistant viscose fiber, the viscose solution is more easily filtered, fire retardants are saved, and the fire resistance of the prepared viscose solution in filtration is good.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a flame-retardant viscose fiber and a preparation method thereof. Background technique [0002] Viscose fiber refers to α-cellulose extracted from cellulose raw materials such as wood and plant straw, processed into spinning stock solution, and then wet-spun to make man-made fibers. It is a regenerated cellulose fiber. The moisture content of viscose fiber meets the physiological requirements of human skin, and it has the characteristics of smooth and cool, breathable, antistatic, and brilliant dyeing. [0003] With the improvement of people's living standards and the enhancement of people-oriented safety awareness, the flame retardancy of fiber products has attracted more and more attention. Many countries and regions have formulated product standards, stipulating that certain fiber products used in vehicles, public places, the elderly, and children must have flame...

Claims

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Application Information

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IPC IPC(8): D01F2/10
CPCD01F2/10
Inventor 徐佳威郑书华李振峰张焕志郝建辉范梅欣申宇飞常书丽刘会兵
Owner HEBEI JIGAO CHEM FIBER
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