Santoprene™ 8271-65

About
A soft, colorable, specialty, non-hygroscopic thermoplastic vulcanizate (TPV) in the thermoplastic elastomer (TPE) family. It is designed for use in non fatty food contact applications. This grade of Santoprene TPV is shear-dependent and can be processed on conventional thermoplastics equipment for injection molding or blow molding. It is polyolefin based and recyclable within the manufacturing stream.&&

Product Description
SupplierCelanese
Material StatusCommercial: Active
FeaturesLow coefficient of friction,Low or no water absorption,Ozone resistance,Low odor,Good coloring,HB,Solvent resistance,Food contact compliance,Renewable resources
AvailabilitysNorth America,Africa & Middle East ,Asia Pacific,Europe,Latin America
Process MethodsInjection Molding,Multiple injection molding

Technical Data
PHYSICALNominal valueUnitTest method
Density0.948g/cm³ASTM D792
Density0.950g/cm³ISO 1183

elastic bodyNominal valueUnitTest method
tensile strength
TD, fracture, 23 ℃6.50MPaASTM D412
TD, fracture, 23 ℃6.50MPaISO 37
TD, 100% strain, 23 ℃2.70MPaASTM D412
TD, 100% strain, 23 ℃2.70MPaISO 37
Tensile strain
TD, fracture, 23 ℃470%ASTM D412
TD, fracture, 23 ℃470%ISO 37
tear strength
TD,23℃19kN/mISO 34-1
TD,23℃19.0kN/mASTM D624
Compression deformation
70℃,22 hr32%ISO 815
70℃,22 hr32%ASTM D395B

MECHANICALNominal valueUnitTest method
Shore hardness
Shore A, 15 seconds, 23 ℃69 ISO 868

THERMALNominal valueUnitTest method
Embrittlement temperature-63.0ASTM D746
Embrittlement temperature-63.0ISO 812
Relative temperature index
Electrical performance100UL 746
Strength mechanical performance85.0UL 746

Aging performanceNominal valueUnitTest method
The rate of change in tensile strength in air
150℃,168 hr-1.0%ISO 188
150℃,168 hr-1.0%ASTM D573
The rate of change in ultimate elongation in air
150℃,168 hr-23%ASTM D573
Change in Tensile Strain at Break in Air(150℃,168 hr)-23%ISO 188
Change in Durometer Hardness in Air (150 ℃, 168 hr)3.0 ASTM D573
The rate of change of Shore hardness in air
Shaw A, 150 ℃, 168 hr3.0 ISO 188

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level UL 94
1.10 mmHB UL 94
3.00 mmHB UL 94

Process Conditions
injectionNominal valueUnitTest method
Recommended maximum moisture content0.080%
Proposed maximum recycled material ratio20%
Barrel rear temperature177 to 191°C
Barrel middle temperature179 to 193°C
Barrel front temperature185 to 199°C
Nozzle temperature185 to 210°C
Processing (melt) temperature143 to 216°C
Mold temperature24 to 52°C
Injection speedFast 
Back pressure0.345 to 0.689MPa
Screw speed100 to 200rpm
Clamping force4.1 to 6.9kN/cm²
Cushion3.18 to 6.35mm
Screw length to diameter ratio16.0:1.0 to 20.0:1.0 
Screw compression ratio2.0:1.0 to 2.5:1.0 
Vent depth0.025mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. Die C
3. Method Bb, Angle (Nicked)
4. Type 1
5. Type A
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