Flame-retardant finishing method of reactive expansion flame retardants on cotton fabrics

An intumescent flame retardant and flame retardant finishing technology, which is applied in fiber treatment, plant fiber, textiles and paper making, can solve the problems of large amount of flame retardant addition, secondary pollution, poor flame retardant durability, etc., and achieve improved flame retardant Flame durability, improved reactivity, and good flame retardant performance

Inactive Publication Date: 2015-08-19
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cotton fabric has soft touch, excellent physical properties, good moisture absorption and breathability, dyeability and antistatic properties, etc., and is widely used in people's daily life, but cotton fabric is a flammable material, which is easy to cause The occurrence of fire accidents seriously threatens the safety of people's lives and properties. Therefore, flame-retardant finishing of cotton fabrics to improve the safety of their applications has become more and more favored by researchers at home and abroad.
However, the traditional impregnation flame retardant finishing method has problems such as long time consumption, large amount of flame retardant added, poor flame retardant effect, poor flame retardant durability, etc., and has a great impact on the physical and mechanical properties of cotton fabrics. When the flame-retardant cotton fabric is burned, it will also produce toxic and harmful gases, causing secondary pollution, so it is necessary to improve and develop new flame-retardant finishing methods

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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  • Flame-retardant finishing method of reactive expansion flame retardants on cotton fabrics
  • Flame-retardant finishing method of reactive expansion flame retardants on cotton fabrics
  • Flame-retardant finishing method of reactive expansion flame retardants on cotton fabrics

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for flame-retardant finishing of cotton fabrics with a reactive intumescent flame retardant, the steps of which are as follows:

[0026] (1) Preparation of flame retardant finishing liquid: wherein the volume ratio of flame retardant 150g / L, catalyst sodium hypophosphite 30g / L, solvent ethanol and water is 7:3; R in the flame retardant molecule 1 for -CH 3 , R 2 for -CH 2 CH 3 ;

[0027] (2) Soak the commercially available plain weave cloth in the flame-retardant finishing solution at 40°C after alkali washing, desizing and drying, soak for 60 minutes for the first time, and 5 minutes for the second time, and perform two dipping and two rolling processes on the cotton fabric at 0.7 MPa deal with;

[0028] (3) Dry the padded cotton fabric at 80°C for 5 minutes, and finally cure it at 160°C for 3 minutes to obtain a flame-retardant cotton fabric. The oxygen index is 30.8%, and the flame retardant grade reaches B1 grade.

Embodiment 2

[0030] A method for flame-retardant finishing of cotton fabrics with a reactive intumescent flame retardant, the steps of which are as follows:

[0031] (1) Preparation of flame retardant finishing liquid: wherein the flame retardant content is 250g / L, the catalyst boric acid is 50g / L, and the volume ratio of solvent ethanol to water is 7:3; R in the flame retardant molecule 1 for -CH 2 CH 3 , R 2 for -CH 2 CH 3 ;

[0032] (2) Soak the commercially available plain weave cloth in the flame-retardant finishing solution at 35°C after alkaline washing, desizing and drying, soak for 50 minutes for the first time, and 4 minutes for the second time, and perform two-dipping and two-rolling process on the cotton fabric at 0.7MPa deal with;

[0033] (3) Dry the padded cotton fabric at 90°C for 7 minutes, and finally cure it at 170°C for 4 minutes to obtain a flame-retardant cotton fabric. The oxygen index is 29.5%, and the flame retardant grade reaches B1 grade.

Embodiment 3

[0035] A method for flame-retardant finishing of cotton fabrics with a reactive intumescent flame retardant, the steps of which are as follows:

[0036] (1) Preparation of flame retardant finishing liquid: wherein the content of flame retardant is 300g / L, the content of catalyst disodium hydrogen phosphate is 40g / L, and the volume ratio of solvent ethanol to water is 7:3; R in the flame retardant molecule 1 for -CH 3 , R 2 for -CH 3 ;

[0037] (2) Soak the commercially available plain weave cloth in the flame-retardant finishing solution at 35°C after alkali washing, desizing and drying, soak for 40 minutes for the first time, and 3 minutes for the second time, and perform two dipping and two rolling processes on the cotton fabric at 0.7 MPa deal with;

[0038] (3) Dry the padded cotton fabric at 100°C for 6 minutes, and finally cure it at 160°C for 5 minutes to obtain a flame-retardant cotton fabric. The oxygen index is 31.2%, and the flame retardant grade reaches B1 gra...

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Abstract

The invention belongs to the field of cotton fabric flame-retardant finishing, and particularly relates to a flame-retardant finishing method of reactive expansion flame retardants on cotton fabrics. The method comprises the following steps that (1) flame-retardant finishing liquid is prepared; (2) cotton fabric raw cloth is subjected to alkali washing for removing paste and is then soaked in the flame-retardant finishing liquid after being dried, and a twice-soaking two-rolling process is utilized for carrying out flame-retardant finishing on the cotton fabrics; (3) the soaked and rolled cotton fabrics are dried for 5 to 8 minutes at 80 to 100 DEG C, finally, high-temperature baking is carried out for 2 to 5 minutes at 150 to 180 DEG C, and the flame-retardant fabrics are obtained. Compared with the prior art, the flame-retardant finishing method of the reactive expansion flame retardants on the cotton fabrics has the advantages that flame retardant molecules per se adopted by the flame-retardant finishing liquid contain a plurality of active reaction groups, and the reaction activity can be improved only through adding a proper number of catalysts, so that the flame-retardant durability of the cotton fabrics is improved, the addition of other auxiliaries is not needed, and the recipe is simple, reasonable and efficient.

Description

technical field [0001] The invention belongs to the field of flame-retardant finishing of cotton fabrics, in particular to a method for flame-retardant finishing of cotton fabrics with reactive intumescent flame retardants. Background technique [0002] Cotton fabric has soft touch, excellent physical properties, good moisture absorption and breathability, dyeability and antistatic properties, etc., and is widely used in people's daily life, but cotton fabric is a flammable material, which is easy to cause The occurrence of fire accidents seriously threatens the safety of people's lives and properties. Therefore, flame-retardant finishing of cotton fabrics to improve the safety of its application is more and more favored by researchers at home and abroad. However, the traditional impregnation flame retardant finishing method has problems such as long time consumption, large amount of flame retardant added, poor flame retardant effect, poor flame retardant durability, etc., a...

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): D06M13/513D06M13/144D06M101/06
Inventor 赵贵哲刘胜男赵斌刘亚青
Owner ZHONGBEI UNIV
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