About8 gflame retardants(markedWa)we

About8 gflame retardants(markedWa)werepackagedwith the same filter papers (marked Wc). The specimens were put in about 2 l distilled water, and the temperature was kept at different temperatures for 36 h and then removed and dried to constant mass at 80 C (marked Wt). The water leaching rate of the specimens can be expressed as: Water leaching rate ¼ Wt WcðÞ = Wa Wc ð Þ 100% Because the soluble particle of flame retardant can be dissolved in water and leached through filter papers, the defined water leaching rate is used to characterize the water solubility.

About8 g fl ame retardants (markedWa) werepackagedwith the same fi lter papers (marked Wc). The specimens were put in about 2 l distilled water, and the temperature was kept at different temperatures for 36 h and then removed and dried to constant mass at 80? C (marked Wt). The water leaching rate of the specimens can be expressed as: Water leaching rate ¼ Wt? WcðÞ = Wa? Wc ð Þ? 100% Because the soluble particle of fl ame retardant can be dissolved in water and leached through fi lter papers, the de fi ned water leaching rate is used to characterize the water solubility.

About8 g fl ame retardants (markedWa) werepackagedwith the same fi lter papers (marked Wc). The specimens were put in about 2 L. Distilled water and the, temperature was kept at different temperatures for 36 h and then removed and dried to constant. Mass at 80  C (marked Wt). The water leaching rate of the specimens can be expressed as:Water leaching rate ¼ Wt  Wc ð Þ = Wa  Wc ð Þ.  100% Because the soluble particle of fl ame retardant can be dissolved in water. And leached through fi, lter papers the de fi ned water leaching rate is used to characterize the water solubility.