Thermogravimetry Studies Concerning the Synergism of Antimony Trioxide-Tin(II)Chloride Dihydrate on the Flame-Retardancy of a Cotton Fabric

Abstract

The synergistic effect between antimony trioxide and tin(II)chloride dihydrate on the flame-retardancy of a cotton fabric (woven construction massing 150 g/m²) was studied in this investigation. The laundered bone-dried massed specimens were impregnated with appropriate concentrations of individual aqueous antimony trioxide suspensions or tin(II)chloride dihydrate suspensions, and some bunches were impregnated with suitable admixed solutions of both chemicals. An acceptable synergistic effect was then experienced by using an admixed bath containing 0.06 formal antimony trioxide and 0.06 formal tin(II)chloride dihydrate suspensions for impartation of flame-retardancy to a cotton fabric. By using a vertical flame spread test the optimum mass of the mixture needed to impart flame-retardancy was obtained to be about 10.38 g anhydrous additives per 100 g fabric. Thermogravimetry (TG/DTG) outcomes of untreated and the supported cotton fabrics at the optimum addition were put in practice and their curves were compared and commented. The results comply with flame-retardancy theories.

Keywords:

• Antimony trioxide
• Flame-retardancy
• Synergism
• Thermogravimetry
• Tin(II)chloride dihydrate

ACKNOWLEDGMENT

The authors are grateful to Gilan University for financial assistance of this research project.

Notes

*Average of 5 tests for each set of samples.

**sd, standard deviation.

***CB, completely burned; PB, partly burned; FR, flame-retarded.

Note: For flame retarded (FR) samples char length ≤ 2.0 cm.