Phosphorus and nitrogen containing flame-retardant finishing agent and flame-retardant cellulose fiber fabric preparation method

A technology of flame retardant finishing agent and cellulose fiber, which is applied in the direction of flame retardant fiber, fiber treatment, plant fiber, etc. It can solve the problems of low solubility and unfavorable flame retardant application of natural cellulose and regenerated cellulose, and achieve durability Effect

Inactive Publication Date: 2018-05-18
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the finished fabric will release free formaldehyde during storage and use.
In order to find a non-toxic halogen-free flame retardant, Chinese patent CN1362413A uses melamine and phosphoric acid to prepare a melamine phosphate flame retardant, which is applied to various thermoplastic and thermosetting polymer materials to obtain good durability Flame retardant materials, however, the prepared products have extremely low solubility in water, which is not conducive to the flame retardant application of natural cellulose and regenerated cellulose

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

[0019] In this example, the preparation of the flame retardant finishing agent and the specific steps of the flame retardant finishing of the cellulose fiber fabric are as follows:

[0020] 1. Weigh 400 grams of phytic acid solution with a mass fraction of 70%, and pour it into a 2-liter reactor equipped with a mechanical stirrer and a thermometer; weigh 151 grams of urea and slowly pour it into the reactor; start the agitator, Electronically controlled heating, when the temperature rises to 90°C, the reaction lasts for 5 hours to obtain the flame retardant ammonium phytate;

[0021] 2. Weigh 150 grams of ammonium phytate obtained in step 1, and 50 grams of urea and 50 grams of dicyandiamide are dissolved in 0.75 liters of water, and fully stirred to obtain a flame retardant finishing agent;

[0022] 3. Immerse 1 kg of Lyocell fiber fabric in the flame-retardant finishing solution described in step 2, and immerse it for 90 minutes at 50°C, then press the Lyocell fiber fabric w...

Embodiment 2

[0024] In this example, the preparation of flame retardant finishing agent and the specific steps of flame retardant finishing of cellulose fiber / fabric are:

[0025] 1. Weigh 400 grams of phytic acid solution with a mass fraction of 70%, and pour it into a 2-liter reactor equipped with a mechanical stirrer and a thermometer; weigh 154 grams of hydrazine hydrate with a mass fraction of 80% and slowly pour it into the reaction In the kettle; start the agitator, electric control heating, when the temperature rises to 50 ℃, continue to react for 5 hours, that is, the flame retardant ammonium phytate;

[0026] 2. Weigh 140 grams of ammonium phytate obtained in step 1, and 60 grams of urea, and 50 grams of dicyandiamide are dissolved in 0.75 liters of water, and fully stirred to obtain a flame retardant finishing agent;

[0027] 3. Immerse 1 kg of cotton fiber fabric in the flame-retardant finishing solution described in step 2, soak it for 60 minutes at 70°C, and then press the co...

Embodiment 3

[0029] In this example, the preparation of flame retardant finishing agent and the specific steps of flame retardant finishing of cellulose fiber / fabric are:

[0030] 1. Weigh 400 grams of phytic acid solution with a mass fraction of 70%, and pour it into a 2-liter reactor equipped with a mechanical stirrer and a thermometer; weigh 352 grams of ammonia water with a mass fraction of 25%, and slowly pour it into the reactor In the middle; start the stirrer, electric control heating, when the temperature rises to 40 ℃, continue to react for 2 hours, that is, the flame retardant ammonium phytate;

[0031] 2. Weigh 160 grams of ammonium phytate obtained in step 1, and dissolve 40 grams of urea and 50 grams of dicyandiamide in 0.75 liters of water, and stir fully to obtain a flame retardant finishing agent;

[0032] 3. Immerse 1 kg of viscose fiber fabric in the flame-retardant finishing solution described in step 2, dip for 120 minutes at 60°C, and then press the viscose fiber fabr...

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PUM

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Abstract

The invention discloses a phosphorus and nitrogen containing flame-retardant finishing agent and a flame-retardant cellulose fiber fabric preparation method. The flame-retardant finishing agent is a mixed solution of ammonium phytate, urea and dicyandiamide. A preparation method of the flame-retardant finishing agent comprises the following steps: firstly, utilizing phytic acid and nitrogen containing compound as raw materials to synthesize flame retardant ammonium phytate; secondly, dissolving the synthesized flame retardant ammonium phytate into water and adding the certain amount of the urea and the certain amount of a crosslinking agent to prepare a flame-retardant finishing agent with a corresponding concentration; finally, utilizing a padding-drying-baking finishing technology to apply the flame-retardant finishing agent to flame-retardant finishing of cellulose fiber / fabric. The flame-retardant finishing agent disclosed by the invention has the advantages that greenness and environmental friendliness are achieved in the utilized raw materials, a finishing technology is simple and easy to operate, and no any toxic and harmful matters to the human body and the environment is not generated in an operational process and a using process; the finished cellulose fiber / fabric has the advantages of excellent flame retardance, good washing resistance and wide market application prospect.

Description

technical field [0001] The invention relates to the technical fields of organic synthesis and textile engineering, in particular to a phosphorus-nitrogen-containing flame-retardant finishing agent and a preparation method of flame-retardant cellulose fiber fabrics. Background technique [0002] Cellulose fibers (such as cotton fibers, etc.) are the most common and widely sourced natural fibers. Cellulose fibers are widely used in clothing, decoration and other fields due to their good moisture absorption and breathability, comfortable wearing, and renewability. However, the limiting oxygen index of cellulose fiber is only 17%, which is a flammable substance. At present, many industries have put forward higher and higher requirements for the flame retardant grade of textiles. In order to endow cellulose fibers with good flame retardant properties and broaden their application fields, many experts and scholars at home and abroad have carried out research on the flame retardan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/292D06M13/432D06M101/06
CPCD06M13/292D06M13/432D06M2101/06D06M2200/30
Inventor 任元林张秋艳刘晓辉程博闻张延光丁辰彭博
Owner TIANJIN POLYTECHNIC UNIV
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