Flame-proof treatment method of real silk fabrics by biological enzyme method

A technology for flame-retardant finishing of real silk fabrics, applied in biochemical fiber treatment, fiber treatment, animal fiber, etc., can solve the problems of large fiber damage, high energy consumption, and environmental pollution, and achieve improved flame-retardant effect, low energy consumption, The effect of avoiding silk fiber damage

Active Publication Date: 2014-01-22
苏州大上科高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can improve the flame retardancy of silk fabrics, solve the technical problems of high energy consumption, large fiber damage and serious environmental pollution in the traditional chemical flame retardant finishing, achieve the purpose of optimizing the flame retardant finishing effect and improving the quality of real silk textiles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0022] Using tyrosinase to catalyze the oxidation of silk fibroin, grafting organophosphorus flame retardants with primary amino groups on the surface of real silk fibers, and improving the flame retardancy of real silk fabrics. The specific examples are as follows:

Embodiment 1

[0023] Implementation 1: The silk fabric selected in this implementation is electric spinning, and the treatment with tyrosinase and organic phosphorus flame retardant is carried out step by step in the same bath.

[0024] (1) Tyrosinase treatment: real silk fabrics were immersed in tyrosinase solution for 4 hours, wherein tyrosinase 25U / g fabric, penetrant 0.5g / L solution, temperature 30°C, pH=7.0.

[0025] (2) Grafting with organophosphorus flame retardant: the silk was treated with tyrosinase for 4 hours, then sodium alendronate (10 g / L) was added, and the treatment was continued for 4 hours at a temperature of 30° C. and pH=7.0.

[0026] (3) Post-treatment: After the enzyme treatment, the silk fabric was fully washed with deionized water, and dried at 60° C. for later use.

[0027] Sample 1: a blank sample impregnated with alendronate sodium;

[0028] Sample 2: Sample treated with tyrosinase and alendronate sodium;

[0029] After the above process treatment, the limiting...

Embodiment 2

[0030] Implementation 2: The silk fabric selected in this implementation is crepe de chine, and the treatment with tyrosinase and organic phosphorus flame retardant is carried out by two-bath method respectively.

[0031] (1) Silk pretreatment: pre-swell silk fabrics with EDTA and urea solution, including 0.25g / L EDTA, 0.25g / L urea, 0.25g / L penetrant, temperature 40°C, treatment time 1 hour, silk The fabric is fully washed.

[0032] (2) Tyrosinase treatment: soak the pretreated silk fabric in tyrosinase solution for 6 hours, wherein tyrosinase 50U / g fabric, penetrant 0.25g / L solution, temperature 30°C, pH =7.0.

[0033] (3) Flame retardant grafting: take out the real silk fabric after tyrosinase treatment, and treat it in alendronate sodium solution for 6 hours, wherein alendronate sodium 15g / L, temperature 30 ℃, pH=7.0 .

[0034] (4) Post-treatment: After the enzyme treatment, the silk fabric was fully washed with deionized water, and dried at 60° C. for later use.

[003...

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PUM

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Abstract

The invention discloses a flame-proof treatment method of real silk fabrics by a biological enzyme method, belonging to the biotechnical field of spinning. The method disclosed by the invention aims to overcome the deficiencies that real silk fabrics in flame-proof treatment by conventional chemical methods are not high in washability, the real silk is easy to damage in high temperature baking, the whiteness of fiber products is easy to decrease and the like. According to the method disclosed by the invention, tyrosine residues in silk fibroin are oxidized to dopaquinone structures with stronger reactivity by means of the characteristic of tyrosinase which has a catalytic oxidation effect on the tyrosine residues in real silk fiber to promote a grafting reaction on an organophosphorus flame retardant containing a primary amine base and the dopaquinone structures, and the flame retardant function of the real silk fabrics is improved through a nitrogen-phosphorus synergistic effect, so that flame-proof treatment of the real silk fabrics by the biological enzyme method is realized. The method disclosed by the invention comprises the following process flows: real silk fabric pre-treatment, and catalyzation of the organophosphorus flame retardant containing the primary amine base by the tyrosinase to graft, water-washing and drying post-treatment. For the fabrics treated by the method disclosed by the invention, not only is the flame retardant performance improved, but also the mechanical properties of the fabrics are further enhanced. Compared with conventional chemical methods, with the adoption of flame-proof treatment by tyrosinase catalyzation on the real silk fabrics, the method is low in energy consumption, high in efficiency and less in pollution in the processing process and is beneficial to environment protection.

Description

technical field [0001] The invention relates to a method for grafting an organophosphorus flame retardant with a primary amino group onto the surface of real silk fibers by utilizing the catalytic oxidation of tyrosinase to endow the silk fabric with flame retardancy, and belongs to the field of textile biotechnology. Background technique [0002] Flame-retardant textiles have long been used in special industries such as fire protection and the military. In recent years, with the development of science and technology and the improvement of living standards, people's safety awareness has become stronger and stronger, and the flame-retardant requirements for fabrics for daily wear and interior decoration are also increasing. come higher. In order to reduce the loss of people's life and property caused by fire, countries all over the world have devoted themselves to the research of new fabric flame retardant technology, developed textiles with excellent flame retardant properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/44D06M16/00D06M13/432D06M13/342D06M101/12
Inventor 王平邱华成钢袁久刚崔莉王强范雪荣
Owner 苏州大上科高新材料有限公司
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