
4: POLY(PHENYLENE ETHER)S 115
improved by the addition of resorcinol bis(diphenyl
phosphate) and PPE [74]. The addition of resorcinol
bis(diphenyl phosphate) causes a higher char yield at
450
◦
C and increases the thermal stability of the PPE
blend.
The high flammability of isotactic polypropy-
lene can be suppressed by incorporating magnesium
hydroxide as an inorganic flame retardant filler, and
poly(2,6-dimethyl-1,4-phenylene ether), which is a
flame retardant polymer [75].
In the composite, themagnesium hydroxide isselec-
tively dispersed in the PPE domains with an aver-
age domain size of about 1.5 µm. The surface treat-
ment of magnesium hydroxide by dodecanoic ...