Abstract
With the aim of invesgating effect of the two polymer phases of ABS on improved fire performance of ABS filled with magnesium hydroxide, we have prepared ABS filled with surface-treated magnesium hydroxide (MH) via compounding poly (styrene-acrylonitrile) (SAN) and polybutadiene filled with MH as well as by compounding ABS and MH. These ABS filled with MH were compared with unfilled ABS by investigating their fire performance and thermal degradation with LOI test, UL-94 test, DSC and FTIR. The dehydration of MH did not effectively increase fire performance and thermal stability of ABS filled with 60.0wt% MH when MH resided in SAN of ABS due to compounding of ABS and MH. The dehydration of MH was clearly able to change the decomposition behavior of the two polymer phases of ABS in ABS filled with 60.0wt% MH when MH resided in the polybutadiene of ABS, resulting in an efficient enhancement of fire performance.
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