Sorbothane Polyurethane Damping Material, 30 Durometer

Sorbothane Polyurethane Damping Material, 30 Durometer
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Sorbothane® is a thermoset, polyether-based polyurethane viscoelastic material that combines high energy absorption with faultless memory. Sorbothane turns mechanical energy into heat. As the material is deformed, the friction created at the molecular level is generated into heat. High hysteresis is then formed. The energy is moved perpendicularly away from its original plane and is pushed close to 90° out of phase from its original disturbing force. Sorbothane is used in shock/vibration mounts, stud mounts, and grommets/bushings in diverse fields such as electronics/audio equipment, noise abatement, insoles, protective sports gear, and anti-vibration gloves and wraps. Information provided by Sorbothane Inc
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Physical Properties	Metric	English	Comments

Density	1.30 g/cc	0.0470 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Shore OO	30	30
Tensile Strength, Ultimate	0.520 MPa	75.4 psi	500 mm/min; ASTM D412 80
Tensile Stress at Strain	0.110 MPa @Strain 100 %	16.0 psi @Strain 100 %	ASTM D412 80
Elongation at Break	500 %	500 %	500 mm/min; ASTM D412 80
100% Modulus	0.0414 MPa @Strain 100 %	6.00 psi @Strain 100 %	ASTM D 412-06a
200% Modulus	0.0827 MPa @Strain 200 %	12.0 psi @Strain 200 %	ASTM D 412-06a
300% Modulus	0.145 MPa @Strain 300 %	21.0 psi @Strain 300 %	ASTM D 412-06a
Compressive Yield Strength	0.300 MPa	43.5 psi	50% strain; ASTM D575 Method A
	0.0145 MPa @Strain 20 %	2.10 psi @Strain 20 %	ASTM D 575-91, Method A
Resilience	10	10	Lupke rebound test
Rebound	4.0 %	4.0 %	Resilience Rebound Height. ASTM D 2632-92. Modified for the effects of tackiness
Bulk Modulus	4.50 GPa	653 ksi
Coefficient of Friction	3.3	3.3	on polished steel; ASTM D1894
Coefficient of Friction, Static	15.8	15.8	on polished steel; ASTM D1894
Tear Strength Test	17.2	17.2	psi per ASTM 624 with 1 mm nick
Compression Set	9.7 % @Temperature 20.0 °C, Time 1800 sec	9.7 % @Temperature 68.0 °F, Time 0.500 hour

Electrical Properties	Metric	English	Comments
Dielectric Strength	11.1 kV/mm	282 kV/in	BS 903

Thermal Properties	Metric	English	Comments
CTE, linear	132 µm/m-°C @Temperature -50.0 - 100 °C	73.3 µin/in-°F @Temperature -58.0 - 212 °F
Thermal Conductivity	0.370 W/m-K	2.57 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	<= 82.0 °C	<= 180 °F	Optimum performance range
Minimum Service Temperature, Air	>= -29.0 °C	>= -20.2 °F	optimum performance range
Glass Transition Temp, Tg	-46.0 °C	-50.8 °F
Flammability, UL94	V-2	V-2

Descriptive Properties
Bacterial Resistance	No Growth		ASTM G 22
Fungal Resistance	No Growth		ASTM G 21-09
Heat Aging	Stable		72 hours at 158°F

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