Jamplast JPAC

Category: Acetal (POM) Homopolymer , Acetal (POM) Homopolymer
Manufacturer: Jamplast, Inc.
Trademark: Jamplast
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: PlGX9e_Jamplast-JPAC.pdf
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Acetal copolymer grade JPAC is a medium viscosity polymer providing optimum performance in general purpose injection molding and extrusion of thin walled tubing and thin gauge film.
General Information
Features
  • Copolymer
  • General Purpose
  • Good Dimensional Stability
  • Good Moldability
  • Good Toughness
  • High Gloss
  • Medium Viscosity
Uses
  • Bearings
  • Cams
  • Gears
  • Housings
  • Knobs
  • Pump Parts
  • Springs
  • Valves/Valve Parts
Forms
  • Pellets
Processing Method
  • Extrusion
  • Injection Molding
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.41g/cm³ASTM D792
Melt Mass-Flow Rate (MFR) (190°C/2.16 kg)9.0g/10 minASTM D1238
Molding Shrinkage ASTM D955
    Flow 2.2%
    Across Flow 1.8%
Water Absorption ASTM D570
    24 hr 0.22%
    Saturation 0.80%
    Equilibrium, 23°C, 50% RH 0.10%
HardnessNominal ValueUnitTest Method
Rockwell Hardness (M-Scale)80ASTM D785
MechanicalNominal ValueUnitTest Method
Tensile Modulus 2830MPaASTM D638
Tensile Strength (Yield, 23°C)60.7MPaASTM D638
Tensile Elongation (Break, 23°C)60%ASTM D638
Flexural Modulus (23°C)2590MPaASTM D790
Flexural Strength (Break)89.6MPaASTM D790
Compressive Strength 110MPaASTM D695
Shear Strength (23°C)53.1MPaASTM D732
Coefficient of Friction ASTM D1894
    vs. Itself - Static 0.35
    vs. Metal - Static 0.15
Taber Abrasion Resistance ASTM D1044
    1000 Cycles, CS-17 Wheel 14.0mg
    1000 Cycles, CS-17F Wheel 6.00mg
    1000 Cycles, CS-18 Wheel 3.00mg
ImpactNominal ValueUnitTest Method
Notched Izod Impact (23°C)69J/mASTM D256
Unnotched Izod Impact 1100J/mASTM D256
Tensile Impact Strength (23°C)147kJ/m²ASTM D1822
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load ASTM D648
    0.45 MPa, Unannealed 158°C
    1.8 MPa, Unannealed 110°C
Glass Transition Temperature -50.0°CASTM E1356
Vicat Softening Temperature 162°CASTM D1525
Melting Temperature 165°C
CLTE - Flow 8.5E-5cm/cm/°CASTM D696
Specific Heat 1460J/kg/°CASTM C351
Thermal Conductivity 0.23W/m/KASTM C177
RTI Elec UL 746
    1.47 mm 105°C
    3.05 mm 105°C
    6.10 mm 105°C
RTI Imp UL 746
    1.47 mm 90.0°C
    3.05 mm 90.0°C
    6.10 mm 90.0°C
RTI Str UL 746
    1.47 mm 90.0°C
    3.05 mm 100°C
    6.10 mm 100°C
ElectricalNominal ValueUnitTest Method
Surface Resistivity 1.3E+16ohmsASTM D257
Volume Resistivity 1.0E+14ohms·cmASTM D257
Dielectric Strength 20kV/mmASTM D149
Dielectric Constant ASTM D150
    100 Hz 3.70
    10 kHz 3.70
    1.00 GHz 3.70
    1.02 mm, 1 kHz 3.70
    1.02 mm, 1 MHz 3.70
Dissipation Factor ASTM D150
    100 Hz 1.0E-3
    10 kHz 1.5E-3
    1.02 mm, 1 kHz 1.0E-3
    1.02 mm, 1 MHz 6.0E-3
Arc Resistance 240secASTM D495
FlammabilityNominal ValueUnitTest Method
Flame Rating HBUL 94
InjectionNominal ValueUnit
Drying Temperature 82.2°C
Drying Time 3.0hr
Suggested Max Regrind 25%
Rear Temperature 171°C
Middle Temperature 182°C
Front Temperature 188°C
Nozzle Temperature 193°C
Processing (Melt) Temp 182 to 199°C
Mold Temperature 76.7 to 93.3°C
Injection Pressure 100 to 138MPa
Holding Pressure 89.6 to 138MPa
Back Pressure 0.00 to 0.345MPa
Screw Speed 20 to 40rpm
Clamp Tonnage 4.1 to 6.9kN/cm²
Cushion 3.18 to 6.35mm
Screw L/D Ratio 16.0:1.0 to 24.0:1.0
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