Effect of Flame Retardant Molecular Weight on Migration Behavior of Flame Retardant in Flexible Polyurethane(PU) Foam
The effect of flame retardant molecular weight on the migration behavior of flame retardant in flexible polyurethane ( PU) foam was investigated. The results showed that, firstly repeated compression deformation had no effect on the migration behavior of flame retardant in flexible PU foam at room temperature. Secondly, under the conditions of baking, the greater flame retardant molecular weight, the slower migration of flame retardant, the baking time and the residual flame retardants conformed to power function when the baking temperature constant and the reflection of the function was well , the coefficient of power function and exponential correlation with the molecular weight of flame retardants, the greater flame retardant molecular weight, the more difficulty the migration of flame retardant from inside of flexible polyurethane foam to the surface. Thirdly, influenced by comprehensive factors of baking condition and repeated compression deformation, the effect on the migration behavior as similar as the second case. The temperature affected remarkable to migration behavior of flame retardant.
NETL
NSTL
万方数据
维普
