Preparation of flame-retardant and anti-dripping PET fibers and their dyeing properties.

In order to reduce the hazards caused by molten drops of PET during combustion, a flame retardant HBCP was synthesized from hexachlorocyclotriphosphazene nitrile and p-hydroxybenzaldehyde, and HBCP was blended with PET and then melt spun to produce flame retardant anti-dripping PET fibers. The effects of three disperse dyes (disperse yellow 3G; disperse blue 2BLN and disperse red 3B) on the dyeing process of pure PET fibers and flame flame-retardant and anti-dripping PET fibers were investigated, including the effects of dyeing mass fraction, dyeing temperature, dyeing time and pH value on the dyeing performance of the fiber. The experimental results show that the dyeing rate of both disperse yellow 3G and disperse red 3B is the highest and the dyeing effect is better when the dye mass fraction is 1.0%, dyeing temperature is 130 °C, dyeing time is 60 min, and the pH value of dye solution is 5; the disperse blue 2BLN achieves the highest dyeing effect when the dye mass fraction is 2.0%, the dyeing temperature is 120 °C, the dyeing time is 60 min, and the pH value of dye solution is 5. Under the same dyeing process conditions, the dyeing rate of all three disperse dyes is improved to some extent for the flame-retardant and anti-dripping PET fibers compared to the pure PET fibers. [ABSTRACT FROM AUTHOR]