Synthesis of Fluorocyclotriphosphazene Derivatives and Their Fire-Retardant Finishing on Cotton Fabrics

Table 6

Effect of the curing temperature on the fire-retardant performance

Curing temperature/°C	Afterflame time/s	Afterglow time /s	Burning char length/cm	Whiteness/%
140	5	0	10.9	82. 85
150	4	0	9.7	81. 59
160	3	0	8.9	81. 98
170	2	0	8.4	72. 47

Cotton fabric was treated with 45% (owf) fire-retardant agent, 2% (owf) catalyst MgCl₂, 5% (owf) crosslink agent, 5% (owf) urea and was cured at different temperature for 3 min.