Page 191 - Engineering Plastics Handbook

164 Engineering Plastics

TABLE 8.1 Commercially Available PEI Resins and Their Trade Names
Reference
equation
in this Commercial
Chemical name chapter trade name Grade Manufacturer
®
PMDA-ODA polyimide (8.2) Kapton , DuPont
Meldin ® Saint-Gobain
®
Biphenyl dianhydride (8.3) Upilex Ube Industries
ODA polyimide
®
BPADA-MPD (8.5) Ultem 1000 or GE Plastics
polyetherimide 1010
®
BPADA-PPD (8.6) Ultem 5001 or GE Plastics
polyetherimide 5011
®
BPADA-PMDA-MPD (8.7) Ultem 6000 GE Plastics
copolyetherimide
®
BPADA-DDS (8.8) Ultem XH6050 GE Plastics
polyetherimide sulfone
®
Biphenol diamine (8.9) Aurum Mitsui Toatsu
PMDA polyetherimide Chemical Co.
®
Silicone polyetherimide (8.10) Siltem STM1500 GE Plastics
copolymer
The BPADA-MPD-based PEI has surprisingly high strength for an
unfilled resin; yield strength is similar to that of unannealed brass, and
modulus is higher than that of other thermoplastics, such as polycar-
bonate. The thermoplastic PEI family provides inherently high strength,
transparency, and ignition resistance, along with relatively good melt
processability.

TABLE 8.2 Typical Properties of Various Thermoplastic Polyetherimides
BPADA/
BPADA- BPADA- PMDA- BPADA-
MPD PPD MPD DDS
CAS number 61128-46-9 71519-79-4 96557-46-9 77699-82-2
T g ,°C (°F) 217 (423) 227 (441) 234 (453) 248 (478)
HDT at 1.9 MPa 200 (392) 207 (405) 211 (412) 237 (459)
(264 psi), °C (°F)
HDT at 0.5 MPa 210 (410) 216 (421) 221 (430) 230 (446)
(66 psi), °C (°F)
Tensile strength, MPa (kpsi) 110 (16) 103 (15) 117 (17) 97 (14)
Flexural modulus, MPa (kpsi) 3516 (510) 3103 (450) 3585 (520) 3103 (450)
Flexural strength, MPa (kpsi) 166 (24) 138 (20) 172 (25) 159 (23)
Rev. N Izod, J /m (ft⋅lb/in) 1335 (25) 961 (18) 2082 (39) 2082 (39)
Specific gravity 1.27 1.28 1.29 1.30
% Water absorption at 24 h 0.25 0.16 0.28 0.65