Lubrizol Estane® R185A Thermoplastic Polyurethane

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Lubrizol Estane® R185A Thermoplastic Polyurethane (discontinued **)
Categories:	Polymer; Thermoplastic; Polyurethane, TP; Thermoplastic Polyurethane (TPUR), Polyether Grade
Material Notes:	Type: Estane® R185A is a Shore 85A, polyether type thermoplastic polyurethane (TPU). FDA approved (21 CFR 177.2600, 177.1680). Uses: Injection Molding, Extrusion. Availability: Asia Information Provided by The Lubrizol Corporation
Key Words:	TPU
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Physical Properties	Original Value	Comments

Specific Gravity	1.10 g/cc	ASTM D792
Linear Mold Shrinkage	0.015 cm/cm	ASTM D955

Mechanical Properties	Original Value	Comments
Hardness, Shore A	87	ASTM D2240
Tensile Strength, Ultimate	320 kg(f)/cm²	ASTM D412
Tensile Strength, Yield	60.0 kg(f)/cm²	at 100% elongation; ASTM D412
	100 kg(f)/cm²	at 300% elongation; ASTM D412
Elongation at Break	700 %	ASTM D412
Tear Strength	95.0 kg(f)/cm	Die C; ASTM D624
Abrasion	45	mm³ loss; ISO 4649
Compression Set	15 % @Temperature 23.0 °C, Time 79200 sec	ASTM D395
	45 % @Temperature 70.0 °C, Time 79200 sec	ASTM D395

Thermal Properties	Original Value	Comments
Vicat Softening Point	90.0 °C	ASTM D1525

Processing Properties	Original Value	Comments
Feed Temperature	180 - 195 °C
Nozzle Temperature	190 - 205 °C
Mold Temperature	10.0 - 40.0 °C
Drying Temperature	70.0 - 80.0 °C
Dry Time	4.00 - 5.00 hour
Injection Pressure	1700 - 2300 psi
Hold Pressure	1200 - 1800 psi
Back Pressure	30.0 - 80.0 psi
Cycle Time - Injection	25 - 35 sec
Screw Speed	180 - 220 rpm

Compliance Properties	Original Value	Comments
FDA	Yes

Descriptive Properties
Injection Time (s)	12-18
Metering Zone	185-200°C

**
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