Research on Improving Flame Retardancy of Nylon/Cotton Blended Materials with Phytic Acid Based Biological Coatings

WANG Gang, MA Li

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Plastics Science and Technology ›› 2024, Vol. 52 ›› Issue (05) : 62-65. DOI: 10.15925/j.cnki.issn1005-3360.2024.05.013
Theory and Research

Research on Improving Flame Retardancy of Nylon/Cotton Blended Materials with Phytic Acid Based Biological Coatings

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Abstract

Phytic acid/cysteine (PA/Cys) flame retardant coating was synthesized by one-pot method with phytic acid and L-cysteine as raw materials, and the prepared PA/Cys coating was sprayed into nylon/cotton blended materials. The effects of phytic acid based biological coating on thermal stability, flame retardancy and smoke suppression of nylon/cotton blended fabrics were investigated by infrared spectroscopy, thermogravimetric analyzer, limiting oxygen index and vertical combustion tests. The results show that PA/Cys spraying can significantly improve the thermal stability, flame retardancy and smoke suppression properties of nylon/cotton blended materials. When PA/Cys is sprayed twice, the carbon residue of nylon/cotton blended fabric is about 40%, which is 1.16 times higher than that of pure nylon/cotton blended fabric. When PA/Cys is sprayed twice, the LOI value of nylon/cotton blended fabric is 26.6%, the damaged length is 60 mm, the burning time and smoldering time are 0, and the TSP decreases to 0.34 m2.

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Phytic acid / L-cysteine / Nylon/cotton blended fabrics / Flame retardancy

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WANG Gang , MA Li. Research on Improving Flame Retardancy of Nylon/Cotton Blended Materials with Phytic Acid Based Biological Coatings. Plastics Science and Technology. 2024, 52(05): 62-65 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.05.013

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