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

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

Example Embodiment

[0036] Example 1

[0037] Using bamboo pulp as a raw material, the alkali cellulose is obtained through the process steps of dipping, pressing, pulverizing, aging, etc. The alkali cellulose contains 17.5% of alkali and 33.5% of α-cellulose (methyl fiber);

[0038] The sodium silicate aqueous solution with a silicon dioxide concentration of 10% was added to the sodium cellulose sulfonate after the alkali cellulose yellowing, mixed with the sodium cellulose sulfonate and dissolved to form a flame retardant cellulose viscose. The addition of the sodium silicate Quantity in SiO 2 Calculated as 25% of the weight of the methyl fiber in the viscose solution, after the steps of filtration, aging, defoaming, and filtration, spinning in a spinning bath, in the spinning bath, sulfuric acid 110g / l, zinc sulfate 8g / l, sodium sulfate 1.67dtex×38mm flame retardant viscose fiber was prepared by plasticizing, drawing, cutting, washing, desulfurizing with sodium sulfite desulfurizer, oiling an...

Example Embodiment

[0039] Example 2

[0040] Using cotton pulp as raw material, the alkali cellulose is obtained through the process steps of dipping, pressing, pulverizing, aging, etc. The alkali cellulose contains 17.5% alkali and 33.0% α-cellulose (methyl fiber);

[0041] The sodium silicate aqueous solution with a silicon dioxide concentration of 13% was added to the sodium cellulose sulfonate after the alkali cellulose yellowing, mixed with the sodium cellulose sulfonate and dissolved to form a flame-retardant cellulose viscose. The addition of the sodium silicate Quantity in SiO 2 Calculated as 27% of the weight of the methyl fiber in the viscose solution, after the steps of filtration, aging, defoaming, and filtration, it is spun in a spinning bath. In the spinning bath, sulfuric acid is 120 g / l, zinc sulfate 8 g / l, and sodium sulfate. It is 320g / l, aluminum sulfate is 16g / l, and the temperature is 43°C. After plasticizing, drawing, cutting, washing, desulfurization with sodium sulfite d...

Example Embodiment

[0042] Example 3

[0043] Using bamboo pulp as a raw material, the alkali cellulose is obtained through the process steps of dipping, pressing, pulverizing, aging, etc. The alkali cellulose contains 17.5% of alkali and 33.0% of α-cellulose (methyl fiber);

[0044] A sodium silicate aqueous solution with a silica concentration of 15% was added to the spinning glue after filtration, aging, defoaming and filtration using a syringe pump. The amount of sodium silicate added was SiO2. 2 Calculated as 25% of the weight of the methyl fiber in the viscose solution, spinning in a spinning bath with 122 g / l of sulfuric acid, 10 g / l of zinc sulfate, 325 g / l of sodium sulfate, and 20 g / l of aluminum sulfate , the temperature is 45 ℃, and then plasticized and drawn, cut, washed with water, 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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