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阻燃PCABS树脂具有优异的热机械性能的

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阻燃PCABS树脂具有优异的热机械性能的Nowadays, it is obvious that safety takes precedence over
functionality. From this point of view, phosphorous flame
retardants are getting important than traditional halogen type
counterparts [1,2]. Triphenyl phosphate (TPP) is one of the
most widely used phosphorous flame retardants and
remarkably effective for acrylonitrile-butadiene-styrene
copolymer (ABS) [3]. Grand and Wilkie [4] have reported
that the flame retarding mechanism of TPP is due to the
formation of pyro phosphoric acid during thermal degradation,
which acts as heat transfer barrier in condensed phase.
Unfortunately, TPP is one of the most frequently used
plasticizers for ABS; plasticizing effects reveal at over 2 phr
[5]. In those studies, however, TPP should also be added
over 10 wt% to obtain the adequate flame retardation.
Moreover to obtain reasonable level of flame retardation, 10
to 15 phr of TPP should be added to the polymer composition.
Therefore, flame retarding ABS and polycarbonate (PC)/
ABS (PC/ABS) using TPP as additive show lowered softening
temperatures, which limit the application fields of these
resins. On the other hand, considerable amount of TPP has
to be evaporated during molding process due on its much
lower evaporation temperature. Therefore the effective amount
of TPP acting as flame retardant in polymer resin should be

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