RP46 Polyimide

RP46 Polyimide - Composite Properties

Property	Unidirectional IM7 Value	Woven Carbon T650-35 Value	Specification
Cure Cycle Temperature (1379 KPa) for 2 hr,c	600 to 617 (315 to 325)	600 to 617 (315 to 325)
Post-cure temperature for 1 to 4 hr,°F (°C)	660 (349)	660 (349)
Glass transition temperature (Tg), °F (°C)	740 (393)	747 (397)	TMA
Flexural Strength, KSI (Mpa) 77 °F(25°C) ........... 600 (316°C) ........... 700 (371°C) ........... 74 (23)weta ........... 550 (288)weta .......... 650 (343)weta .......... 650 (343)...........	..... 250 (1724) ..... 133 (917) ..... 115 (793) ...................... ...................... ...................... .......................	167.62 (1156) 119.08 (821) 7.12 (49) 4.50 (31)	ASTM D-790
Interlaminar shear strength, KSI (MPa) 77 °F(25°C) ........... 600 (316°C) ........... 700 (371°C) ........... 74 (23)weta ........... 550 (288)weta .......... 650 (343)weta .......... 650 (343)...........	19 (131) 7.4 (51) 4.7 (32)	9.83 (68) 7.29 (50) 7.12 (49) 4.5 (31)	ASTM D-2344
In-plane shear strength, ksi 77°F (25°C) ksi at 550°F		15 (103) 11.76 (81)	ASTM D-5379
Tensile Strength, ksi at 77°F (25°C)	381 (2627)	88.2 (608)	ASTM D-3039
Compression Strength, ksi at 77°F ksi at -65°F ksi at 77°F wet* ksi at 550°F wet* ksi at 650°F wet*	261 (1799)	87.68 85.56 52.89 44.11	ASTM D-695 ASTM D-3410
Interlaminar Fracture Toughness (G1c), J/m at 77°F J/m at 450°F J/m at 550°F J/m at 650°F	301 450 740 380		ASTM D-5528 (Double cantilever beam)
Moisture Absorption % Weight after 30 days at 185°F and 85 % relative humidity	0.62	0.51	ASTM D-570
Thermo-Oxidative stability, % weight loss after: 10000 hrs at 450°F 5000 hrs at 550°F 1500 hrs at 600°F 200 hrs at 700°F 100 hrs at 700°F	0.9 8.6 7.6 5.58 3.7
Chemical Corrosion Resistance	No Damage after 38 days at 176° immersed in JP-4 and hydraulic fluid. No damage after 6 months submersion under hot asphalt at 450°F to 500°F Excellent resistance to galvanic corrosion, strong acids, and some alkalines.
Thermal Cycling	Better microcracking resistance than a widely used high temperature matrix resin.		ASTM D-635-91
Flammability	Not Flammable
Burn Through	No burn through after 30 seconds in blue gas flame at 0.787 in.
Blistering	No moisture induced thermal damage at 350°F, 400°F, 450°F, 500°F, and 550°F. Minimal damage 600°F.
Repairability Tensile lap shear strength, PSI at 77°F PSI at 550°F	24500 (16.9) 21000 (14.5)
Toxicity	Nontoxic Moderate		Ames TA 100 Ames TA 98

Coefficient of Thermal Expansion-
Neat resin, 22.44 ± 0.01 x 10-6/degree F. from -100F to 600F
Carbon Composites, 0.75 ± 0.01 10-6/degree F. from -100F to 600F

Dielectric Constant - 2.9 at 10 GHZ

Dissipation Factor - 0.001 at 10 GHZ

Polyimide Prepreg

Unitech, LLC RP46 is an ultra high temperature, high moisture and chemical corrosion resistant polyimide prepreg that cures at 615ºF. It is available on unidirectional or woven graphite and glass fibers and fabrics.

Prepreg Physical Properties on Carbon Fibers [2]
Standard weight, g/m...108
Standard resin content, percent by weight... 35 to 38
Standard tack... both sides
Cured by thickness
IM7 fiber, in... 0.0052
T650-35 cloth, in... 0.0122
Shelf life at 0ºF, months...6

2] Other weights, resin contents, fibers, and fabrics are available.

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