Evonik Solimide® AC-550 Polyimide Foam  (Unverified Data**)
Categories: Polymer; Thermoplastic; Polyimide, Thermoplastic
Material Notes: Description: SOLIMIDE® foams provide weight savings, improved handling/installation characteristics and enhanced durability compared to traditional insulation, resulting in lower operating and life cycle costs. In addition, the foams are extremely fire resistant and do not support combustion in normal atmospheres. Toxic gas, smoke generation and offgassing are virtually non-existent. These foam products are widely used in private, commercial, and military aircraft. SOLIMIDE® foams are specified and flying in Airbus, Boeing, Canadair, Boeing-Douglas, Hughes Helicopter, and Sikorsky Helicopter aircraft, among others. Meets BMS 8-300, BAMS 544-006, DMS 2330, and they are also approved for use in NASA systems.

Information provided by degussa.

Evonik Industries is the successor company to Degussa.
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Physical PropertiesMetricEnglishComments
Density 0.00705 g/cc0.000255 lb/in³ASTM D3574A
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength at Break >= 0.0590 MPa>= 8.56 psiASTM D3574E
Compressive Strength 0.00483 MPa0.701 psiLoad Deflection at 25% Compression; Boeing BMS 8-300
Compression Set <= 40 %<= 40 %50% Deflection; ASTM D3574D
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity 0.0430 W/m-K0.298 BTU-in/hr-ft²-°FASTM C518
Maximum Service Temperature, Air 200 °C392 °FContinuous Use
Flammability Test 0.000.00seconds, Vertical Burn After Flame Time (Burn Length = 1.8 inches with no dripping); FAR 25.853(a), Appendix F, Part 1, (a)(1)(i)
Oxygen Index 30 %30 %ASTM D2863
 
Descriptive Properties
Acoustical Absorption Coefficient (1000Hz)0.94 sabins/m225 mm, ASTM C423 and E795, Type A Mounting
Acoustical Absorption Coefficient (125 Hz)0.15 sabins/m225 mm, ASTM C423 and E795, Type A Mounting
Acoustical Absorption Coefficient (2000 Hz)0.97sabins/m225 mm, ASTM C423 and E795, Type A Mounting
Acoustical Absorption Coefficient (250 Hz)0.30 sabins/m225 mm, ASTM C423 and E795, Type A Mounting
Acoustical Absorption Coefficient (4000 Hz)0.79 sabins/m225 mm, ASTM C423 and E795, Type A Mounting
Acoustical Absorption Coefficient (500 Hz)0.71 sabins/m225 mm, ASTM C423 and E795, Type A Mounting
FlexibilityNo Creasing or TearingBoeing BMS 8-300
Noise Reduction Coefficient0.7525 mm, ASTM C423 and E795, Type A Mounting
Smoke Emission at 4 Minutes3FAR 25.853(d), Appendix F, Part V
Toxic Gas Generation150 ppm CO HCN, HF, HCl, NOx, or SO2 not detected, Boeing BSS 7239, flaming mode

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