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A kind of manufacturing method of flame retardant viscose fiber

A technology for flame-retardant viscose fiber and a manufacturing method, which is applied in the field of post-treatment flame-retardant viscose fiber, can solve the problems of restricted use, difficult textile processing, restricted promotion, etc., achieves effect promotion, improves permeability, overcomes whiteness reduced effect

Active Publication Date: 2019-05-07
赛得利(盐城)纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Flame retardant modification of ordinary viscose fiber includes blending method and post-treatment flame retardant modification, among which the blending method involves the preparation process of raw silk, the technical transformation is complicated and requires high investment
Moreover, due to the complex forming process of viscose fiber, it is required that the added flame retardant should not have some adverse reactions with the viscose glue solution and coagulation bath, and it should not be precipitated during spinning and post-processing. In addition, it should not cause difficulties in spinning.
In particular, the addition of a large amount of flame retardants to the flame-retardant viscose fibers produced by blending seriously affects the physical and mechanical properties of the flame-retardant fibers, as well as new wearing properties such as hand feeling, which limits their application in the fields of clothing, underwear, etc. use
[0004] And after the modified treatment of viscose fiber, the flame retardant performance of the finished fiber is excellent, and the physical indicators are good.
However, in the existing technology, the flame-retardant fiber prepared by post-processing technology has the bottleneck problem of unsatisfactory flame-retardant effect and unsustainable flame-retardant performance, and the problem of reduced whiteness of the fiber after flame-retardant treatment, which limits this technology. Promotion

Method used

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  • A kind of manufacturing method of flame retardant viscose fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The desulfurized and washed fibers were directly impregnated with hydrochloric acid at room temperature, the concentration of hydrochloric acid used was 1.2g / L, the liquor ratio was controlled at 1:35, and the pre-impregnation time was 3.5 minutes.

[0030] After the pre-impregnated fibers are squeezed dry, they are soaked and washed at room temperature for 3 minutes.

[0031] After the washed fiber is bleached and squeezed dry, in the pretreatment solution containing the sodium hydroxide of 2.5g / L, the penetrating agent JFC of 2.5g / L and the surfactant KH550 of 5.5g / L, in Pretreatment was carried out at 80°C for 10 minutes.

[0032] Wash the pretreated fibers with alcohol, using an ethanol solution with a concentration of 6.5g / L, and soak for 5 minutes.

[0033] After the alcohol-washed fibers are squeezed dry, they are soaked in a mixed solution containing a phosphorus-nitrogen flame retardant and an oil agent. In the mixed solution, the concentration of the phosphor...

Embodiment 2

[0036] The desulfurized and washed fibers were directly impregnated with hydrochloric acid at room temperature, the concentration of hydrochloric acid used was 1.5g / L, the liquor ratio was controlled at 1:40, and the pre-impregnation time was 4 minutes.

[0037] After the pre-impregnated fibers are squeezed dry, they are soaked and washed at room temperature for 4 minutes.

[0038] After the fiber after washing is bleached and squeezed dry, in the pretreatment liquid that contains the sodium hydroxide of 3g / L, the penetrant JFC of 3g / L and the tensio-active agent KH550 of 7g / L, at a temperature of 80 Pretreatment was carried out at ℃ for 6 min.

[0039] Wash the pretreated fibers with alcohol, using an ethanol solution with a concentration of 7.5g / L, and soak for 4 minutes.

[0040] After the alcohol-washed fiber is squeezed dry, it is soaked in a mixed solution containing a phosphorus-nitrogen flame retardant and an oil agent. In the mixed solution, the concentration of the ...

Embodiment 3

[0043] The desulfurized and water-washed fibers were directly impregnated with hydrochloric acid at room temperature, the concentration of hydrochloric acid used was 1.6g / L, the liquor ratio was controlled at 1:38, and the pre-impregnation time was 3.5 minutes.

[0044] After the pre-impregnated fibers are squeezed dry, they are soaked and washed at room temperature for 3.5 minutes.

[0045] After the washed fiber is bleached and squeezed dry, in the pretreatment solution containing 3.5g / L sodium hydroxide, 4g / L penetrant JFC and 7.5g / L surfactant KH550, at temperature Pretreatment was carried out at 76 °C for 5.5 min.

[0046] Wash the pretreated fibers with alcohol, using an ethanol solution with a concentration of 6.5g / L, and soak for 5 minutes.

[0047] After the alcohol-washed fiber is squeezed dry, it is soaked in a mixed solution containing a phosphorus-nitrogen flame retardant and an oil agent. In the mixed solution, the concentration of the phosphorus-nitrogen flame re...

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Abstract

The invention discloses a method for preparing flame-retardant viscose. The method includes the following steps that (1) fibers are pre-soaked with hydrochloric acid for 3 minutes to 5 minutes; (2) after extrusion drying is carried out, the fibers are soaked and washed with water for 3 min to 5 min; (3) after extrusion drying is carried out, the product is pretreated for 5 min to 10 min at the temperature of 60 DEG C to 90 DEG C in pretreating liquid containing a penetrating agent; (4) alcohol washing is carried out, and the soaking time is 3 min to 5 min; (5) after extrusion drying is carried out, the product is soaked in a mixed solution containing a phosphorus-nitrogen flame retardant and an oil agent for 3 min to 10 min; (6) multiple times of extrusion drying are carried out, drying is carried out at the temperature of 80 DEG C to 100 DEG C, and the flame-retardant fibers are obtained. According to the method, the flame-retardant viscose is prepared with the after-treatment technology, the permeation performance of a flame retardant is improved, the flame-retardant performance of the flame-retardant fibers is improved, the good flame-retardant effect is achieved, and the hand feeling and the textile processing performance are not influenced.

Description

technical field [0001] The invention relates to the technical field of functional cellulose fibers, in particular to flame-retardant fibers, and more specifically to a post-treatment flame-retardant technology for viscose fibers. Background technique [0002] Fire prevention is an eternal theme of human social security. The number and death rate of fires caused by non-flammable textiles is higher than that caused by fires caused by other causes. Viscose fiber is widely used, but it is extremely flammable, which requires viscose to be flame retardant. With the strengthening of fire prevention awareness and the gradual improvement of safety regulations, flame retardant fabrics are more and more widely used in all aspects of life. Flame-retardant viscose fiber can be used in clothing, home textiles, fire protection and many other fields, which can effectively prevent fires. In European and American countries, the use of flame-retardant fabrics in textiles in public places has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/11D06M11/38D06M13/513D06M13/44D06M13/402D06M13/224D06L1/12
CPCD06L1/12D06M11/11D06M11/38D06M13/224D06M13/402D06M13/44D06M13/513
Inventor 刘海洋叶荣明杨定国瞿俊荣
Owner 赛得利(盐城)纤维有限公司