
4: POLY(PHENYLENE ETHER)S 113
Table 4.7 Properties of a PPE Blend
a
[58]
Property Value Unit Standard
Density 1.06 gcm
−3
ASTM D792
Melt mass-flow
rate (MFR)
b
9.2 g/10 min ASTM D1238
Mold shrink,
linear-flow
c
7E-3 cm/cm ASTM D955
Water
absorption, 24 h
0.06 % ASTM D570
Tensile modulus 2.86 GPa ASTM D638
Tensile strength
break
49.6 MPa ASTM D638
Tensile
elongation yield
7.2 % ASTM D638
Tensile
elongation break
28 % ASTM D638
Flexural strength 90.0 MPa ASTM D790
Notched izod
impact (23
◦
C)
214 Jm
−1
ASTM D256
Dielectric
constant (60 Hz)
2.65 ASTM D150
Oxygen index 22 % ASTM D2863
a
Nor yl
®
731, General Electric.
b
(289
◦
C
/
5.0 kg).
c
3.18 mm.
somewhat in the thermal degradation region [59]. ...