| abstract |
The invention relates to aramid fibres. More particularly, the invention relates to a method for dyeing and functionalising fibres derived from aramid, providing improved fastness of the dye on the fibre, using the sol-gel method. The method for dyeing and functionalising fibres derived frrom aramid according to the invention is characterised in that a sol is prepared using a colorant of a formula having an alcohol or triazine function that can react with the OH group of silicon alkoxide released during the step of hydrolysis of the sol-gel method, said colorant is mixed with a precursor derived from silane in the presence of ethanol as a solvent and HCl as a catalyst, and the reaction of the alkoxide with the colorant ensures the good fastness of the dye. |