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Method for producing flame-retarding and antibacterial fibers and flame-retarding and antibacterial fibers obtained by same

An antibacterial fiber and fiber technology, applied in the direction of fiber type, fiber treatment, plant fiber, etc., can solve the problems of reduced tear strength, affecting the application of flame retardant processing technology, and the decrease of fabric breaking strength

Inactive Publication Date: 2018-01-12
宁夏全宇新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest disadvantage of Proben finishing is that the breaking strength of the finished fabric decreases significantly, usually reaching a 20% reduction; especially the tear strength is significantly reduced
Therefore, the application of this kind of flame retardant processing technology has been seriously affected.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Immerse the cotton fibers in a 300 g / L concentration of tetrakis hydroxymethyl phosphorus chloride aqueous solution and soak for 5 minutes; then use a liquid manipulator to dry the excess finishing solution in the tow, and the excess rate is controlled at 120% by weight; The final fiber tow was baked for 18 minutes at 70° C. in the tow dryer, so that the moisture content of the wet tow was controlled at 12% by weight; the dried tow was sent to ammonia fumigation equipment for ammonia fumigation, The ammonia gas concentration is 85% by volume, the ammonia fumigation temperature is 65°C, and the ammonia fumigation time is 13 minutes; then the tow that has been fumigated by ammonia is immersed in a 60°C, 10% by weight hydrogen peroxide aqueous solution for oxidative treatment for 10 minutes; The bundles are washed with water to remove surface impurities, and then oiled and dried to obtain flame-retardant and antibacterial fibers. The strength of the fiber obtained is 2.1cN...

Embodiment 2

[0029] The flax fiber is submerged in 220 g / l concentration of tetrakis hydroxymethyl phosphorus sulfate aqueous solution and soaked for 6 minutes; then the redundant finishing liquid in the tow is squeezed dry by a liquid squeezer, and the squeeze rate is controlled at 130% by weight; The fiber tow is baked at 80° C. for 10 minutes in the tow dryer, so that the moisture content of the wet tow is controlled at 15% by weight; the dried tow is sent to ammonia fumigation equipment for ammonia fumigation, and the ammonia gas The concentration is 80% by volume, the ammonia fumigation temperature is 75°C, and the ammonia fumigation time is 18 minutes; then the tow that has been fumigated by ammonia is immersed in a 60°C, 15% by weight hydrogen peroxide aqueous solution for oxidation treatment for 8 minutes; the tow that has been oxidized is passed through Washing with water to remove surface impurities, and then oiling and drying to obtain flame retardant and antibacterial fibers. T...

Embodiment 3

[0031] Submerge vinylon with a degree of acetalization of 55% into tetrakishydroxymethyl phosphorus chloride aqueous solution with a concentration of 350 g / liter and soak for 10 minutes; % by weight; the dried fiber tow is baked in the tow dryer at 90°C for 5 minutes, so that the moisture content of the wet tow is controlled at 10% by weight; the dried tow is sent to the ammonia fumigation equipment Carry out ammonia gas fumigation, the ammonia gas concentration is 60% by volume, the ammonia fumigation temperature is 55°C, and the ammonia fumigation time is 13 minutes; then, the ammonia fumigated tow is immersed in a 60°C, 18% by weight hydrogen peroxide aqueous solution for oxidation treatment for 12 minutes; The oxidized tow is washed with water to remove surface impurities, and then oiled and dried to obtain a flame-retardant and antibacterial fiber. The strength of the obtained fiber is 4.6cN / dtex, and the limiting oxygen index is 30%. According to the absorption method of...

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Abstract

The invention relates to a method for producing flame-retarding and antibacterial fibers and the flame-retarding and antibacterial fibers obtained by the same. The method comprises the following steps: a) providing fibers selected from cellulose fibers, unmodified vinylon fibers and modified vinylon fibers or a mixture of the cellulose fibers, the unmodified vinylon fibers and the modified vinylonfibers; b), immersing the fibers provided by step a) into a water solution of a tetrakis hydroxymethyl phosphorus compound to obtain immersed fibers; c) pre-dehydrating the immersed fibers obtained in step b) to obtain pre-dehydrated fibers; d) drying the pre-dehydrated fibers obtained by step c) to obtain dried fibers; e) carrying out ammonia fumigation on the dried fibers obtained by step d) toobtain ammonia fumigated fibers; f) carrying out oxidization on the ammonia fumigated fibers obtained by step e) to obtain the flame-retarding and antibacterial fibers, wherein in an ammonia fumigation process of step e), ammonia gas is applied in an insufficient manner relative to the tetrakis hydroxymethyl phosphorus compound applied in step b) so that one part of the tetrakis hydroxymethyl phosphorus compound in the fibers do not react with the ammonia gas.

Description

technical field [0001] The invention relates to a method for producing a flame-retardant antibacterial fiber and the obtained flame-resistant antibacterial fiber, more particularly, the present invention relates to a method for producing a flame-resistant antibacterial fiber and the obtained flame-resistant antibacterial fiber by using a tetrahydroxymethyl phosphorus compound. Background technique [0002] Polyvinyl alcohol (PVA) has a wide range of raw material resources and can be produced from natural gas, calcium carbide, petroleum and other resources. PVA fiber is produced by wet spinning method, the technical requirements for processing equipment are relatively low, and the processing cost is relatively low. In the conventional vinylon preparation method, the PVA fiber is acetalized through the reaction of formaldehyde and two adjacent hydroxyl groups, and the hydroxyl content in the fiber is reduced after a large number of hydroxyl groups are blocked, so that the viny...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/282D06M11/60D06M11/50D06M101/06D06M101/24
Inventor 刘三民王红星肖红施楣梧
Owner 宁夏全宇新材料有限公司
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