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Ensinger PEI

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Covestro Texin® 985 Thermoplastic Polyurethanes (TPU)
Categories: Polymer; Thermoplastic; Polyurethane, TP
Material Notes: Texin 985 resin is an aromatic polyether-based thermoplastic polyurethane with a Shore hardness of approximately 85A. It can be processed by injection molding, extrusion, or blow molding.

Properties / Applications: Texin 985 resin offers outstanding abrasion resistance, impact strength, toughness, and flexibility. It also exhibits excellent inherent resistance to salt water stress cracking, and hydrolysis. Texin 985 natural color resin complies with FDA food-contact regulations 21 CFR 177.1680 (Polyurethane Resins) and 177.2600 (Rubber Articles Intended for Repeated Use), subject to the limitations of these and any other applicable regulations. In addition, Texin 985 natural color resin is listed under NSF standard 61 for use in potable water applications. Typical applications include gaskets, hose, tubing, shoe inserts, connectors, belting, and miscellaneous molded articles.

Information provided by Covestro
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Physical PropertiesOriginal ValueComments
Specific Gravity 1.12 g/ccASTM D792
Linear Mold Shrinkage, Flow 0.0080 cm/cm
@Thickness 2.54 mm		ASTM D955
Linear Mold Shrinkage, Transverse 0.0080 cm/cm
@Thickness 2.54 mm		ASTM D955
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 85ASTM D2240
Tensile Strength at Break 38.6 MPaASTM D412
Tensile Stress at Strain 4.80 MPa
@Strain 50 %		ASTM D412
 5.50 MPa
@Strain 100 %		ASTM D412
 9.70 MPa
@Strain 300 %		ASTM D412
Elongation at Break 590 %ASTM D412
Flexural Modulus 26.9 MPa
@Thickness 584 mm		ASTM D790
 59.0 MPa
@Thickness -762 mm		ASTM D790
Compressive Strength 0.300 MPa2% Deflection; ASTM D 575
 1.00 MPa5% Deflection; ASTM D 575
 2.10 MPa10% Deflection; ASTM D 575
 3.10 MPa15% Deflection; ASTM D 575
 4.30 MPa20% Deflection; ASTM D 575
 5.50 MPa25% Deflection; ASTM D 575
 16.5 MPa50% Deflection; ASTM D 575
Resilience 45[%], Bayshore; ASTM D2632
Tear Strength 87.6 kN/mDie C; ASTM D624
Taber Abrasion, mg/1000 Cycles 30
@Load 1.00 kg		[mg] Loss, H-18; ASTM D3489
Compression Set 16 %
@Temperature 23.0 °C,
Time 79200 sec		postcured; ASTM D395-B
 19 %
@Temperature 23.0 °C,
Time 79200 sec		as molded; ASTM D395-B
 40 %
@Temperature 70.0 °C,
Time 79200 sec		postcured; ASTM D395-B
 80 %
@Temperature 70.0 °C,
Time 79200 sec		as molded; ASTM D395-B
 
Thermal PropertiesOriginal ValueComments
Vicat Softening Point 80.0 °CRate A; ASTM D1525
Brittleness Temperature >= -68.0 °FASTM D746
Glass Transition Temp, Tg -46.0 °C
 
Processing PropertiesOriginal ValueComments
Rear Barrel Temperature 177 - 193 °C
Middle Barrel Temperature 182 - 199 °C
Front Barrel Temperature 182 - 204 °C
Nozzle Temperature 185 - 207 °C
Zone 1 182 - 199 °CExtrusion
Zone 2 182 - 204 °CExtrusion
Zone 3 182 - 210 °CExtrusion
Die Temperature 188 - 210 °CExtrusion
Melt Temperature 190 - 205 °CExtrusion
 193 - 210 °CInjection
Mold Temperature 16.0 - 43.0 °C
Injection Pressure 6000 - 15000 psiInjection
Hold Pressure 4000 - 8000 psiInjection
Back Pressure <= 800 psiInjection
Cushion 0.125 - 0.250 inInjection
 
Compliance PropertiesOriginal ValueComments
FDA Yes

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