O'Neill Industrial Corporation

O'NEILL NOISEBLOCK® is a multilayer fireblock acoustical composite consisting of low density open cell Polyimide foam bonded to both sides of a flexible vinyl noise barrier, and faced with a reinforced fire retardant polyvinyl flouride film.

The high performance, minimum tie-down pattern of the thin facing film to the foam surface allows minimum noise reflection and maximum noise absorption.

The U.S. patents for NOISEBLOCK® are 4,488,619 and 4,940,112. Canadian patents number are 1209055 and 2,018,624. Noiseblock II® is a new flexible acoustical composite for transport aircraft which complies with latest FAA Flame requirements: ASTM E-906 HRR = 54.6 SRR = 67.2.

FEATURES:

• High resistance to flame and smoke
• Effective noise control
• Safe components: lead-free barriers and low
• out-gas Polyimide foam
• Broad range of composite construction
• Edge sealed for total impermeability
• Made-to-fit custom complex contoured panels
• Blankets can be supplied in standard 4' x 8' sheets,
• custom made to specified sizes, or countoured to fit
• Die cut parts and pressure sensitive adhesive backing,
• kit forms available
• For aircraft, ships, submarines, medical devices,
• and engine applications

ACOUSTICAL PROPERTIES
Noise Transmission Loss (ASTM E-90 Free Hanging)
PART NO.	DESCRIPTION	FREQUENCY (Hz)
PART NO.	DESCRIPTION	125	250	500	1K	2K	4K	STC
635-227-635-OC	1/4" Foam; 1/2 Lb/Ft² Vinyl; 1/4" Foam	11	12	15	20	26	26	32
635-454-127-OC	1/4" Foam; 1 Lb/Ft² Vinyl; 1/2" Foam	15	19	21	28	33	33	27

Noise Absorption (ASTM C-423 #4 Mounting)
PART NO.	DESCRIPTION	FREQUENCY (Hz)
PART NO.	DESCRIPTION	125	250	500	1K	2K	4K	STC
635-OC	1/4" FR Tedlar Faced Foam	.01	.01	.02	.26	.50	.77	.20
127-OC	1/2" FR Tedlar Faced Foam	.00	.10	.24	.60	.89	.98	.45

MECHANICAL PROPERTIES
PROPERTY	MATERIALS	TEST METHOD	RESULT
Break Strength	Barrier	FTMS 191A-M5102	Warp 150 Lb/In Fill Lb/In
Tear Strength	Barrier	ASTM D-1117	Warp 45 Lb/In Fill 120 Lb/In
Service Temperature	Foam Composite		-200° to 500°F -40° to 200°F
Thermal Conductivity	Composite	K Factor	.26
Flammability	Composite Composite Foam Composite	FAR 25.853 UL 94 ASTM E-162 DOT MVSS 302	After Burn 1 Sec Burn Length 1 Sec Drip 0 Meets HF1 Flame Spread 5 Max Pass
Oxygen Index	Foam	ASTM D-2863	40% Min
Smoke Density	Foam	ASTM E-662	5 Max Optic Density
Outgassing	Foam	NASA Oct 1983	0.01% Volatile Collectible Material
Permeance	Facing	ASTM E-96A	0.2 English Perms Grains/Ft²/24 Hrs/In Hg
Color	Facing		Aluminum Grey

CHEMICAL RESISTANCE
The fire retardant polyvinyl flouride facing is resistant to most any chemical with the exception of high concentration (30-40%) of hydrogen peroxide. One month exposure will cause embrittlement.