Synthetic method and application of macromolecular activated flame retardant

A synthesis method and flame retardant technology are applied in the synthesis field of polyvinyl alcohol phosphonate ammonium flame retardant, which can solve the problems of cotton fabric being inflammable, easy to cause and spread fire, easy to be washed off, etc. The effect of washing fastness

Inactive Publication Date: 2019-09-27
张光先
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cotton textiles are widely used in many industries, but cotton fabrics are flammable and easy to cause and spread fires. Although cotton fabrics finished with Pyrovatex CP and Proban, which are widely used in industry, have good durability and flame retardancy, the finishing of cotton fabrics release formaldehyde during use
Although organic small molecule ammonium phosphonate flame retardants have good flame retardancy and form P-O-C covalent bonds between the flame retardants and cotton fabrics, the hydrolysis resistance of the formed P-O-C covalent bonds is not very good and is easily destroyed. wash off

Method used

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  • Synthetic method and application of macromolecular activated flame retardant
  • Synthetic method and application of macromolecular activated flame retardant
  • Synthetic method and application of macromolecular activated flame retardant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 12 grams of polyvinyl alcohol (I) was added to a 500mL beaker, 88mL of water was added, and then 19.1mL of phosphoric acid 19.1mL with a mass concentration of 85% was added, and heated for 6 hours on a 1KW electric furnace equipped with a mechanical stirrer to prepare poly Vinyl alcohol phosphonate (II); then add 20 mL of water and 16.1 g of urea, continue heating for 3 hours, and the pH of the thick liquid is 5-6. Ammonium polyvinyl phosphonate (III) is obtained.

[0042] Add water to the prepared polyvinyl alcohol phosphonate ammonium (III) to prepare 60 mL of polyvinyl alcohol phosphonate ammonium (III) solution, then add 3 grams of dicyandiamide, soak 10 grams of cotton fabric in it, and the temperature is 50 ° C , time 10 minutes. Take out the cotton fabric, dry it with a paddle car, the liquid retention rate is about 100%, and then bake it on a 190°C setting machine for 6 minutes. Then wash and dry to prepare polyvinyl phosphonate ammonium branch cotton fabric (...

Embodiment 2

[0045] 18 grams of polyvinyl alcohol (I) are joined in the beaker of 500mL, add 120mL water, mass concentration is 85% phosphoric acid 16.6mL, is equipped with the electric stove of mechanical stirrer of 1KW and heats 6 hours, prepares polyvinyl alcohol Phosphonate (II); then add 30 mL of water and 21.8 g of urea, continue heating for 3 hours, and the pH of the thick liquid is 5-6. Ammonium polyvinyl phosphonate (III) is obtained.

[0046] Add water to the prepared polyvinyl alcohol phosphonate ammonium (III) to prepare 90 mL of polyvinyl alcohol phosphonate ammonium (III) solution, then add 4.5 grams of dicyandiamide, and soak 15 grams of cotton fabric in it at a temperature of 50 ° C , time 10 minutes. Take out the cotton fabric, dry it with a paddle car, the liquid retention rate is about 100%, and then bake it on a 200°C setting machine for 3 minutes. Then wash and dry to prepare polyvinyl phosphonate ammonium branch cotton fabric (IV).

[0047] Washing with 1A conditio...

Embodiment 3

[0049] 24 grams of polyvinyl alcohol (I) were added to a 500mL beaker, 170mL of water was added, and 40mL of phosphoric acid with a mass concentration of 85% was heated for 6 hours on a 1KW electric furnace equipped with a mechanical stirrer to prepare polyvinyl alcohol phosphine Ester (II); then add 40mL of water and 40g of urea, continue heating for 3 hours, the pH of the thick liquid is 5-6. Ammonium polyvinyl phosphonate (III) is obtained.

[0050] Add water to the prepared polyvinyl alcohol phosphonate ammonium (III) to prepare a 120mL polyvinyl alcohol phosphonate ammonium (III) solution, then add 6 grams of dicyandiamide, and soak 20 grams of cotton fabric in it at a temperature of 50°C , time 10 minutes. Take out the cotton fabric, dry it with a paddle car, the liquid retention rate is about 100%, and then bake it on a 185°C setting machine for 6 minutes. Then wash and dry to prepare polyvinyl phosphonate ammonium branch cotton fabric (IV).

[0051] Washing with the 1...

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Abstract

The invention discloses synthetic method and application of a macromolecular activated flame retardant. The synthesis method comprises the following steps: heating and dissolving polyvinyl alcohol to prepare a solution with the concentration of 12%, placing the solution in a beaker, adding phosphoric acid, and heating on an electric furnace equipped with a mechanical stirring device to prepare polyvinyl alcohol phosphonate (II); then adding water and urea, and continuing to heat to obtain thick liquid with the pH of 5 to 6, that is, the activated flame retardant ammonium alcohol polyvinyl phosphonate (III). The application of the flame retardant is characterized in that the prepared flame retardant and cotton fabrics are subjected to a grafting reaction under the action of a catalyst dicyandiamide. According to the isynthetic method and application of the macromolecular activated flame retardant, the formaldehyde-free property, durability, and flame retardance of the cotton fabrics are realized, the finished cotton fabrics have durability, and no formaldehyde is released during use.

Description

technical field [0001] The application belongs to the technical field of textile chemistry and dyeing and finishing, and specifically relates to a synthesis method and application of a polymer active flame retardant, especially to a synthesis method and application of a polyvinyl alcohol phosphonate ammonium flame retardant. Background technique [0002] Cotton textiles are widely used in many industries, but cotton fabrics are flammable and easy to cause and spread fires. Although cotton fabrics finished with Pyrovatex CP and Proban, which are widely used in industry, have good durability and flame retardancy, the finishing Cotton fabrics release formaldehyde during use. Although organic small molecule ammonium phosphonate flame retardants have good flame retardancy and form P-O-C covalent bonds between the flame retardants and cotton fabrics, the hydrolysis resistance of the formed P-O-C covalent bonds is not very good and is easily destroyed. wash off. [0003] Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F116/06C08F8/40C08F8/30C09K21/14D06M15/333D06M101/06
CPCC08F8/30C09K21/14D06M15/333D06M2101/06D06M2200/30C08F8/40C08F116/06
Inventor 张光先张凤秀张仪清
Owner 张光先
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