Rogers Corporation Poron® 4790-92-25 Supported Urethane Foam, Extra Soft, Slow Rebound, PET Reinforced

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Rogers Corporation Poron® 4790-92-25 Supported Urethane Foam, Extra Soft, Slow Rebound, PET Reinforced
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	Extra soft, slow rebound with a very low closure force. Standard available thickness range from 0.021" to 0.500" (0.53 mm to 12.7 mm). Features and Benefits of PORON Products: Excellent compression set resistance which enables durable, long-term performance for gasketing, sealing, and cushioning. Low-outgassing and non-fogging, containing no plasticizers or residual chemicals to contaminate the device. The material will not become brittle and crumble and is non-corrosive to metal. Inherently flame retardant without the use of additives. Many of the materials meet flammability requirements of UL HBF and MVSS 302. Engineered urethane formulations offering a wide modulus range - 2-90 psi @ 25% deflection – for more design versatility requirements. Good chemical resistance Easy to fabricate, die-cuts cleanly and works with a broad range of adhesives Thicknesses from 0.021" to 0.041" (0.53 mm to 1.04 mm) Applications:Communications Automotive Electronics Other industrial equipment and devices Information provided by Rogers Corporation.
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Physical Properties	Original Value	Comments

Density	1.395 g/cc	supporting material; ASTM D1505
	25.0 lb/ft³	ASTM D3574-95 Test A
Water Absorption	14 %	Immersion; ASTM D570-95
Moisture Absorption at Equilibrium	2.0 %	High Humidity; AMS 3568-95
Thickness	21.0 - 41.0 mil	Range of Thicknesses Available
Outgassing - Total Mass Loss	0.44 % @Temperature 125 °C, Time 86400 sec	WVR; at 7000 Pa; ASTM E595-93
	1.44 % @Temperature 125 °C, Time 86400 sec	TML; at 7000 Pa; ASTM E595-93
Collected Volatile Condensable Material	0.27 % @Temperature 125 °C, Time 86400 sec	at 7000 Pa; ASTM E595-93

Mechanical Properties	Original Value	Comments
Tensile Strength	30000 psi	MD, supporting material; ASTM D882
Tensile Strength, Yield	15000 psi	F5, supporting material; ASTM D882
Elongation at Break	150 %	supporting material; ASTM D882
Tensile Modulus	500 ksi	MD, supporting material; ASTM D882
Compressive Yield Strength	1.25 - 8.50 psi @Strain 25 %	Range, 0.2"/min. strain rate
	5.30 psi @Strain 25 %	Typical value, 0.2"/min. strain rate
Coefficient of Friction, Dynamic	0.40	A/B, supporting material; ASTM D1894
Compression Set	2.0 % @Temperature 23.0 °C	ASTM D1667-90 Test D
	10 % @Temperature 70.0 °C	ASTM D3574-95 Test D

Electrical Properties	Original Value	Comments
Volume Resistivity	8.00e+11 ohm-cm	ASTM D257-99
Dielectric Constant	1.48 @Time 86400 sec	50% RH; ASTM D150
Dielectric Strength	50.0 V/mil	ASTM D149-97a
Dissipation Factor	0.040	ASTM D150-98

Thermal Properties	Original Value	Comments
CTE, linear	230 - 310 µm/m-°C
Maximum Service Temperature, Air	70.0 °C	Constant use; SAE J-2236
	121 °C	Intermittent use; ASTM D746-98
Brittleness Temperature	-12.0 °C	ASTM D746-98
Shrinkage, MD	1.2 % @Temperature 150 °C, Time 2340 sec	supporting material
Shrinkage, TD	0.00 % @Temperature 150 °C, Time 2340 sec	supporting material

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PROGA925 / 138365

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