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A kind of preparation method of flame-retardant cellulose fiber

A technology of flame-retardant cellulose and cellulose, which is applied in the field of fiber manufacturing, can solve the problems of inability to balance flame-retardant effect and durability, and achieve the effect of flexible method, excellent flame-retardant performance and mild conditions

Active Publication Date: 2020-12-22
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 cellulose fiber and a preparation method thereof. The preparation method is as follows: extruding the cellulose fiber spinning liquid through a spinneret, coagulating, stretching and washing to obtain washed silk, and then using a flame-retardant The flame retardant cellulose fiber is obtained by rinsing and drying the washed silk with aqueous solution of flame retardant; the temperature of water washing is ≥90°C, the temperature of aqueous solution of flame retardant is 60-90°C during treatment, and the temperature of rinsing is 20-40°C ; The flame retardant contains more than one of groups capable of forming covalent bonds with cellulose hydroxyl groups, groups capable of self-crosslinking reactions, and groups capable of forming hydrogen bonds with cellulose hydroxyl groups. The prepared flame-retardant cellulose fiber is mainly composed of a cellulose fiber matrix and a flame retardant dispersed in the cellulose fiber matrix. The preparation method of the invention has simple process and mild conditions; the prepared fiber has excellent mechanical properties, washing resistance and flame retardancy.

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 Patents(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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