Texin® STX

Category: PUR, Unspecified , Polyurethane
Manufacturer: Covestro - PUR
Trademark: Texin®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: vcwgIr_Texin-STX.pdf
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Texin STX resin is an opaque, high performance thermoplastic polyurethane which possesses the stiffness and modulus of standard engineering thermoplastics.
General Information
Features
  • Low CLTE
  • Low hygroscopicity
  • Impact resistance, good
  • Good wear resistance
  • Good chemical resistance
  • Heat resistance, high
  • Low shrinkage
Uses
  • Electrical/Electronic Applications
  • Valve/valve components
  • Frame
  • Accessories
  • Shell
Appearance
  • Opacity
Processing Method
  • Extrusion
  • Injection molding
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.22g/cm³ASTM D792, ISO 1183
Molding Shrinkage
    Flow : 2.54mm 0.50%ASTM D955
    Flow direction : 2.54mm 0.50%ISO 2577
Water Absorption
    24 hr 0.23%ASTM D570
    23°C, 24 hr 0.23%ISO 62
HardnessNominal ValueUnitTest Method
Rockwell Hardness
    Class m 50ASTM D785
    Class r 110ASTM D785
    M scale 50ISO 2039-2
    R scale 110ISO 2039-2
MechanicalNominal ValueUnitTest Method
Tensile Modulus 1930MPaASTM D638
Tensile Strength ASTM D638
    Yield 62.0MPaASTM D638
    Fracture 47.0MPaASTM D638
Tensile Elongation ASTM D638
    Yield 7.3%ASTM D638
    Fracture 85%ASTM D638
Flexural Modulus ASTM D790, ISO 178
    -- 2000MPaASTM D790, ISO 178
    -- 183.0MPaASTM D790, ISO 178
Flexural Strength 93.0MPaASTM D790, ISO 178
Bending strain- at Maximum Stress
    -- 6.8%ISO 178
    -- 6.8%ASTM D790
ImpactNominal ValueUnitTest Method
Notched Izod Impact ASTM D256
    -30°C, 3.18 mm 190J/mASTM D256
    23°C, 3.18 mm 850J/mASTM D256
Unnotched Izod Impact (23°C, 3.18 mm)No BreakASTM D256
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load ASTM D648
    0.45 MPa, not annealed 88.0°CASTM D648
    1.8 MPa, not annealed 73.0°CASTM D648
Vicat Softening Temperature 105°CISO 306/A50, ASTM D1525 2
CLTE - Flow 7.5E-5cm/cm/°CASTM D696
InjectionNominal ValueUnit
Drying Temperature - Desiccant Dryer 104 - 121°C
Drying Time - Desiccant Dryer 4.0hr
Suggested Max Moisture < 0.030%
Suggested Max Regrind 20%
Rear Temperature 235 - 246°C
Middle Temperature 238 - 249°C
Front Temperature 238 - 249°C
Nozzle Temperature 243 - 254°C
Processing (Melt) Temp 235 - 250°C
Mold Temperature 43.0 - 66.0°C
Injection Pressure 41.4 - 96.5MPa
Injection Rate Moderate
Back Pressure < 5.52MPa
Screw Speed 40 - 80rpm
Cushion < 3.18mm
Injection instructions
Hold Pressure: 60 to 80% of Injection Pressure
ExtrusionNominal ValueUnit
Drying Temperature 104 - 121°C
Drying Time 4.0hr
Cylinder Zone 1 Temp. 225 - 250°C
Cylinder Zone 2 Temp. 225 - 240°C
Cylinder Zone 3 Temp. 225 - 240°C
Melt Temperature 230°C
Die Temperature 230 - 240°C
Note Message
1 .at 5% Strain
2 .速率 A (50°C/h), 压 力1 (10N)
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