Lubrizol ESTANE® GP72DB Ester Based Thermoplastic Polyurethane

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Lubrizol ESTANE® GP72DB Ester Based Thermoplastic Polyurethane
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Polyurethane, TP; Thermoplastic Polyurethane, Elastomer, Polyester Grade
Material Notes:	Type: Estane® GP 72DB is an aromatic polyester-based thermoplastic polyurethane (TPU). Appearance: Translucent spherical pellets Uses: Injection molding parts, Translucent Available in Europe Information provided by Lubrizol.
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Physical Properties	Original Value	Comments

Specific Gravity	1.24 g/cc	ISO 2781
Maximum Moisture Content	0.050
Melt Flow	20 - 35 g/10 min @Load 8.70 kg, Temperature 217 °C

Mechanical Properties	Original Value	Comments
Hardness, Shore D	68	ISO 868
Tensile Strength, Ultimate	42.0 MPa	ISO 37
Elongation at Break	510 %	ISO 37
Tensile Modulus	0.283 GPa	ISO 527
50% Modulus	0.0250 GPa @Strain 50 %	ISO 37
100% Modulus	0.0260 GPa @Strain 100 %	ISO 37
300% Modulus	0.0330 GPa @Strain 300 %	ISO 37
Rebound	37 %	ISO 4662
Tear Strength	220 kN/m	with incision; ISO 34B
	240 kN/m	without incision; ISO 34B
Abrasion	50	mm³; ISO 4649
Compression Set	22 % @Temperature 22.0 °C, Time 252000 sec	ISO 815
	34 % @Temperature 70.0 °C, Time 86400 sec	ISO 815

Thermal Properties	Original Value	Comments
Vicat Softening Point	147 °C	A50; ISO 306

Processing Properties	Original Value	Comments
Feed Temperature	40.0 °C	Injection
Nozzle Temperature	210 - 220 °C	Injection
Zone 1	205 - 215 °C	Injection
Zone 2	210 - 220 °C	Injection
Zone 3	215 - 225 °C	Injection
Zone 4	215 - 225 °C	Injection
Drying Temperature	105 °C
Dry Time	2.00 - 3.00 hour
Dew Point	-30.0 °C

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