Preparation method of flame-retardant cellulosic fiber

A technology of flame retardant cellulose and cellulose, applied in the field of fiber manufacturing, can solve the problem of inability to take into account the flame retardant effect and durability, and achieve the effects of flexible method, excellent washing resistance and good market prospect.

Active Publication Date: 2019-08-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing flame-retardant cellulose fibers with good flame-retardant effect and good durability in view of the defect that the existing technology cannot take into account the flame-retardant effect and durability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of flame-retardant cellulose fiber, its specific steps are as follows:

[0038] (1) preparation concentration is the viscose fiber spinning solution of 5wt%;

[0039] (2) The spinning solution is extruded through the spinneret, coagulated, stretched and washed to obtain washed silk, the temperature of washing is 90°C, and the termination condition of washing is: the water content of the washed silk is 40wt%;

[0040] (3) Soak the washed silk with a flame retardant aqueous solution, the mass content of the flame retardant in the flame retardant aqueous solution is 10wt%, and the flame retardant is an alkoxycyclotriphosphazene, and the temperature of the flame retardant aqueous solution during immersion is 60°C, soaking time is 60 seconds;

[0041] (4) Rinse and dry the soaked water-washed silk to obtain flame-retardant cellulose fibers. The temperature of rinsing is 20°C, and the time is 10s. The drying method is hot air drying. The temperat...

Embodiment 2

[0054] A kind of preparation method of flame-retardant cellulose fiber, its specific steps are as follows:

[0055] (1) preparing concentration is the acetate fiber spinning solution of 25wt%;

[0056] (2) The spinning solution is extruded through the spinneret, coagulated, stretched and washed to obtain washed silk, the temperature of washing is 99°C, and the termination condition of washing is: the water content of the washed silk is 70wt%;

[0057] (3) Spray the washed silk with a flame retardant aqueous solution, the mass content of the flame retardant in the flame retardant aqueous solution is 30wt%, the flame retardant is a halogenated phosphazene, and the temperature of the flame retardant aqueous solution is 90°C when spraying , the spraying time is 600 seconds;

[0058] (4) Rinse and dry the water-washed silk after spraying to obtain flame-retardant cellulose fibers. The temperature of rinsing is 40°C, and the time is 120s. The drying method is hot air drying, and th...

Embodiment 3

[0061]A kind of preparation method of flame-retardant cellulose fiber, its specific steps are as follows:

[0062] (1) the preparation concentration is the Lyocell fiber spinning solution of 15wt%;

[0063] (2) The spinning liquid is extruded through the spinneret, coagulated, stretched and washed to obtain washed silk, the temperature of washing is 95°C, and the termination condition of washing is: the water content of the washed silk is 55wt%;

[0064] (3) Soak the washed silk with a flame retardant aqueous solution, the mass content of the flame retardant in the flame retardant aqueous solution is 19wt%, the flame retardant is a halogenated phosphorous acid ester, and the temperature of the flame retardant aqueous solution is 75°C during soaking, The soaking time is 330 seconds;

[0065] (4) Rinse and dry the soaked water-washed silk to obtain flame-retardant cellulose fibers. The temperature of rinsing is 30°C, and the time is 65s. Dry until the water content of the fibe...

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Abstract

The invention relates to a flame-retardant cellulosic fiber and a preparation method thereof. The preparation method comprises the following steps: extruding, solidifying, stretching and washing a cellulose fiber spinning solution with water by a spinning nozzle to obtain a water-washing cellosilk, then treating the water-washing cellosilk with an aqueous solution of a flame retardant, and then rinsing and drying to obtain the flame-retardant cellulosic fiber, wherein the temperature of the water washing is greater than or equal to 90 DEG C, the temperature of the aqueous solution of the flameretardant is 60-90 DEG C, and the temperature of the rinsing is 20-40 DEG C. The flame retardant contains one or more groups capable of forming a covalent bond with the cellulose hydroxyl group, self-crosslinking, and forming a hydrogen bond with the cellulose hydroxyl group. The prepared flame-retardant cellulosic fiber mainly comprises a cellulosic fiber matrix and the flame retardant dispersedin the cellulosic fiber matrix. The preparation method provided by the invention has the advantages of simple process and mild conditions; the obtained fiber has excellent mechanical properties, excellent water washing resistance and excellent flame retardant properties.

Description

technical field [0001] The invention belongs to the technical field of fiber manufacturing, and relates to a flame-retardant cellulose fiber and a preparation method thereof. Background technique [0002] Cotton and hemp fibers in cellulose fibers have been used as important textile raw materials for a long time because their products have good thermal performance. Because of its advantages of being renewable, non-toxic, comfortable fabrics, hygienic and healthy, degradable waste and no white pollution, it has been the most important raw material for textiles for a long time. With the development of society, although Polyester fiber has replaced its role to a certain extent, but it is still the mainstream raw material for textiles. However, with the continuous development of the market, the demand for cellulose fibers is increasing day by day, and the output of natural cellulose fibers such as cotton and hemp is limited, and it is difficult to meet the growing consumer dema...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/06D01D10/06D06M13/298D06M13/44D06M13/453D06M101/06
CPCD01D5/06D01D10/06D06M13/44D06M13/298D06M13/453D06M2101/06D06M2200/30D01F2/02D01F2/06D01F11/02D06M2400/01D06M11/70D01F1/07
Inventor 王铁晗崔世强靳宏张阳刘岩张玉梅
Owner DONGHUA UNIV
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