Construction of eco-friendly flame retardant and dripping-resistant coating on polyester fabrics

Abstract

Polyester fabric is widely used in our daily life, while it is highly flammable and easy to produce melt dripping during combustion causing huge potential hazards. Endowing polyester fabric with flame retardancy and dripping-resistance simultaneously is still a difficulty. Eco-friendly polyethylenimine/phytic acid (PEI/PA) coating on polyester fabric was fabricated in this study. The limiting oxygen index value of coated fabric increased from 21.3% of uncoated one to higher than 40%. The dripping phenomenon of coated fabrics was completely eliminated. The coated polyester fabrics possessed good flame retardant durability after washing. Thermogravimetric analysis results indicated that PEI/PA coating promoted the char formation of polyester fabrics resulting in dripping-resistance. Scanning electron microscopy results demonstrated that PEI/PA coating could act through the intumescent flame retardant action. This study provides a facile method for durable flame retardant and dripping-resistant thermoplastic fabric using eco-friendly chemicals by the simple layer-bylayer assembly.

Flame retardant and anti-dripping polyethylene terephthalate fabric based on bio-based phytic acid/gelatine coating

“…However, the LOI value of PA/G-15 was still higher than 26% after washing, indicating good durability. This may be due to PEI can react with the free carboxyl group of PET fabric, and it can also react with negatively charged PA [37]. Therefore, this flame retardant coating possessed good washing durability.…”

“…Phytic acid (PA) is a bio-based phosphorus acid used as the acid source of the IFR coating [34][35][36]. Our previous research reported that the PA/PEI IFR coating was constructed on PET fabrics showing excellent flame retardancy and dripping-resistant properties [37].…”

Layer-by-Layer Self-Assembly Coating for Multi-Functionalized Fabrics: A Scientometric Analysis in CiteSpace (2005–2021)

“…During combustion, the stable carbon layer can also block the transmission of heat, oxygen, mass and volatile products [ 40 ]. The commonly used phosphorus-containing polyelectrolytes are ammonium polyphosphate [ 53 , 57 , 58 , 59 , 60 , 61 ], phytic acid [ 56 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ], DNA [ 69 ], phosphatized cellulose [ 70 ], etc. The self-extinguishing effect can be achieved on the phosphorus-containing coating-modified fabric during the burning test.…”