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DEXFLEX® 756-68

Thermoplastic Polyolefin Elastomer

Supplied by LyondellBasell Advanced Polyolefins USA, Inc.

The technical datasheet with complete property values for DEXFLEX® 756-68 is available to members of the Prospector Plastics Database.
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Product Description
DEXFLEX® 756-68 thermoplastic polyolefin (TPO) is designed for automotive air bag covers. This material has been designed for low temperature air bag deployment with a balance of stiffness and ductility. The material is typically black for painted or non-visible applications. The product is also available in natural, or color matched to automotive OEM interior colors with UV stabilization for mold-in-color applications.

Applications:
DEXFLEX® 756-68 thermoplastic polyolefin is intended for use in automotive airbag door applications, either in driver, passenger, or side airbag modules. The typical service temperature range is from -40°C to 100°C. For mold-in-color applications, low gloss appearance can be achieved with most interior grain patterns.
General  
Material Status 
  • Commercial: Active
Availability 
  • North America
Additive 
  • UV Stabilizer
Features 
  • Ductile
  • Good Stiffness
  • Good UV Resistance
  • Low Gloss
  
Uses 
  • Automotive Applications
  • Automotive Interior Parts
  • Automotive Interior Trim
Appearance 
  • Black
  • Colors Available
  
Forms 
  • Pellets
Physical
Nominal Value
Unit
Test Method
Density
g/cm³
 ISO 1183
Melt Mass-Flow Rate (MFR) (230°C/2.16 kg)
g/10 min
 ISO 1133
Molding Shrinkage - Flow
      
--
in/in
 ASTM D955
176°F, 48 hr
in/in
 ASTM D955
--
%
 ISO 294-4
176°F, 48 hr
%
 ISO 294-4
Ash Content
      
--
wt%
 ISO 3451
--
wt%
 ASTM D5630
Mechanical
Nominal Value
Unit
Test Method
Tensile Modulus
psi
 ISO 527-2/50
Tensile Stress
     ISO 527-2/50
Yield
psi
  
Break
psi
  
Tensile Strain
     ISO 527-2/50
Yield
%
  
Break
%
  
Flexural Modulus 2 (73°F, 0.157 in)
psi
 ISO 178
Flexural Strength 2 (73°F, 0.157 in)
psi
 ISO 178
Scratch Resistance 3
N
  
Elastomers
Nominal Value
Unit
Test Method
Fogging 4 (203°F)
%
 SAE J1756
Impact
Nominal Value
Unit
Test Method
Charpy Notched Impact Strength
     ISO 179/1eA
-40°F
ft·lb/in²
  
73°F
ft·lb/in²
  
Notched Izod Impact Strength 5
     ISO 180/1A
-40°F
ft·lb/in²
  
73°F
ft·lb/in²
  
Instrumented Dart Impact 6
     ASTM D3763
-40°F, Max Load
in·lb
  
32°F, Max Load
in·lb
  
73°F, Max Load
in·lb
  
Hardness
Nominal Value
Unit
Test Method
Shore Hardness (Shore D, 15 sec)
 
 ISO 868
Thermal
Nominal Value
Unit
Test Method
Heat Deflection Temperature
      
66 psi, Unannealed
°F
 ISO 75-2/B
264 psi, Unannealed
°F
 ISO 75-2/A
Melting Temperature 7
°F
 ASTM D3418, ISO 3146
CLTE
     ASTM D696
Flow: -22 to 176°F
in/in/°F
  
Transverse: -22 to 176°F
in/in/°F
  
Service Temperature
°F
 Internal Method
Flammability
Nominal Value
Unit
Test Method
Burning Rate
      
--
in/min
 SAE J369
--
in/min
 FMVSS 302
--
in/min
 ISO 3795
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: DEXFLEX® 756-68, DEXFLEX 75668, DEXFLEX® , DEXFLEX, DEXFLEX75668, 756, 756-68, 75668, 756:68, 756/68, 756+68, 756_68, 756 68, TPO, Thermoplastic Polyolefin Elastomer, TPO (POE), TPO POE, Thermoplastic Elastomer, TPE, LyondellBasell APO, ThermoplasticPolyolefinElastomer, TPOPOE, ThermoplasticElastomer, 68756
Features
Features may also be described by the following terms: Good UV Resistance, UV Resistant, Ultraviolet Resistant, Ultraviolet Light Resistant, Good Stiffness, Low Gloss.
Uses
Uses may also be described by the following terms: Automotive Applications, Automotive Sector.
Injection
Nominal Value
Unit
 
Drying Temperature
°F
  
Drying Time
hr
  
Suggested Max Moisture
%
  
Rear Temperature
°F
  
Middle Temperature
°F
  
Front Temperature
°F
  
Nozzle Temperature
°F
  
Processing (Melt) Temp
°F
  
Mold Temperature
°F
  
Injection Pressure
psi
  
Back Pressure
psi
  
Screw Speed
rpm
  
Cushion
in
  
Injection Notes
Hot Runner, Manifold, and Tips: 215°C
Mold Temp, cavity: 30°C
Mold Temp, core: 24°C
Injection Pressure, First Stage: 35 to 105 bar
Injection Pressure, Second Stage: 25 to 70 bar
Injection Velocity: 10 to 80 mm/sec
Notes
1Typical properties: these are not to be construed as specifications.
20.079 in/min
3GMN3943, FLTM BN 108-13 DCX LP-463DD-18-1
46 hr, photometric method
5Edgewise
622.0 ft/sec
710°C/min
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.