In this study, for flame retardant modification of needle-punched PET nonwoven, a high temperature bath method HT similar to dyeing fibres with disperse dyes was applied. Aqueous solutions of sodium silicate were used as the flame retardant modifier. The flame retardant properties of the studied nonwoven were evaluated using Limited Oxygen Index LOI method. Samples of the nonwoven modified in three different variants were also examined by thermogravimetric analysis TGA.
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