Flame-retardant finishing agent for pure cotton fabric and preparation method thereof

A flame retardant finishing agent, technology for pure cotton fabrics, applied in the direction of flame retardant fibers, fiber treatment, plant fibers, etc., can solve the problem of unstable hydrolysis of boron-containing flame retardants, poor flame retardancy of nitrogen-containing flame retardants, etc. problem, to achieve the effect of good flame retardant effect, good film-forming performance, and strong water-washing performance

Active Publication Date: 2018-12-07
SUZHOU INSILK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, halogen-containing flame retardants will release toxic gases, nitrogen-containing flame retardants have poor flame retardancy, and boron-containing flame retardants are unstable in hydrolysis, all of which restrict the development of these types of flame retardants.

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

[0025] A preparation method of a flame retardant finishing agent for pure cotton fabrics, comprising the following steps:

[0026] (1) Dissolve chitosan in water, add Na 2 CO 3 Adjust the pH to 9, then control the temperature to 0°C, add phosphorus oxychloride, carry out ultrasonic treatment for 30 minutes, remove water by distillation under reduced pressure, add dichloromethane, heat to 60°C, stir and mix uniformly, add Dicyandiamide was reacted for 6 hours, then lowered to room temperature, and dichloromethane was distilled off to obtain a flame retardant. The molar ratio of chitosan and phosphorus oxychloride was 5:2; The molar ratio of methane used is 2:1;

[0027] (2) adding the mixture of poly-1,4-butanediol adipate diol, polyoxypropylene tetraol, polytetrahydrofuran diol and methylcyclohexyl diisocyanate, triethanolamine and triethylamine into the reactor, Heating, maintaining the temperature at 110 °C, stirring at a speed of 40 rpm, adding acetone, sodium 1,2-dihydr...

Embodiment 2

[0034] A preparation method of a flame retardant finishing agent for pure cotton fabrics, comprising the following steps:

[0035] (1) Dissolve chitosan in water, add Na 2 CO 3 Adjust the pH to 11, then control the temperature to 4°C, add phosphorus oxychloride, carry out ultrasonic treatment for 60 minutes, remove water by distillation under reduced pressure, add dichloromethane to it, heat to 80°C, stir and mix well, add Dicyandiamide, reacted for 7h, cooled to room temperature, distilled off dichloromethane to obtain a flame retardant, the molar ratio of chitosan and phosphorus oxychloride was 5:2; chitosan and dichloromethane The molar ratio of methane used is 2:1;

[0036] (2) adding the mixture of poly-1,4-butanediol adipate diol, polyoxypropylene tetraol, polytetrahydrofuran diol and methylcyclohexyl diisocyanate, triethanolamine and triethylamine into the reactor, Heating, maintaining the temperature at 120 °C, stirring at a speed of 60 rpm, adding acetone, sodium 1...

Embodiment 3

[0043] A preparation method of a flame retardant finishing agent for pure cotton fabrics, comprising the following steps:

[0044] (1) Dissolve chitosan in water, add Na 2 CO 3 Adjust the pH to 9, then control the temperature to 4°C, add phosphorus oxychloride, carry out ultrasonic treatment for 30 minutes, remove water by distillation under reduced pressure, add dichloromethane to it, heat to 80°C, stir and mix well, add Dicyandiamide was reacted for 6 hours, then lowered to room temperature, and dichloromethane was distilled off to obtain a flame retardant. The molar ratio of chitosan and phosphorus oxychloride was 5:2; The molar ratio of methane used is 2:1;

[0045] (2) adding the mixture of poly-1,4-butanediol adipate diol, polyoxypropylene tetraol, polytetrahydrofuran diol and methylcyclohexyl diisocyanate, triethanolamine and triethylamine into the reactor, Heating, maintaining the temperature at 120 °C, stirring at a speed of 40 rpm, adding acetone, sodium 1,2-dihyd...

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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PUM

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Abstract

The invention discloses a flame-retardant finishing agent for a pure cotton fabric and a preparation method thereof, and the preparation method comprises the following steps: after prepared polyurethane emulsion is diluted with water, adding a flame retardant synergist, a surfactant and a hydroxymethyl cellulose, controlling the temperature at 50 to 60 DEG C, stirring for 1 to 2 hours, and removing air bubbles to obtain the flame-retardant finishing agent for the pure cotton fabric. After being finished by the environmentally-friendly flame-retardant finishing agent, the cotton fabric has goodflameproofness, and the hand feeling of the fabric does not become stiff, and the cotton fabric can maintain good flameproof performance after long-term use and washing.

Description

technical field [0001] The invention relates to the field of textile auxiliaries, in particular to a flame retardant finishing agent for pure cotton fabrics and a preparation method thereof. Background technique [0002] In recent years, the fire caused by textiles and the death rate have been increasing day by day, which has far exceeded the fire caused by other causes, accounting for about 50% of the total fire volume in the world. Therefore, the flame retardant of textiles has attracted widespread attention. Cotton fabrics have the characteristics of excellent moisture absorption and air permeability, soft hand feel, good dyeability and complete biodegradability. They have been widely used in people's daily life and become irreplaceable textiles. The main component of cotton fiber is cellulose. Cellulose is a natural organic compound composed of many dehydrated β-glucose, which is generally mixed with lignin, natural resin, and hemicellulose. However, cotton fiber is a c...

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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IPC IPC(8): D06M15/579D06M11/47D06M13/17D06M15/09C08G18/64C08G18/42C08G18/48C08G18/75C08G18/32C08B37/08D06M101/06
CPCC08B37/003C08G18/0828C08G18/3206C08G18/4018C08G18/4238C08G18/4812C08G18/4829C08G18/4854C08G18/6484C08G18/751D06M11/47D06M13/17D06M15/09D06M15/579D06M2101/06D06M2200/30
Inventor 周继东
Owner SUZHOU INSILK CO LTD
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