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PK – Polyketone PK

AKROTEK® PK-VM natural (4774)

1500 MPa

n.b.

AKROTEK® PK-VM natural (4774) is an unreinforced Polyketon with high flowability.

Typical applications

Mainly components in mechanical engineering and the automotive industry.

Processing information

The listed values are recommendations. Higher values should be used for higher glass loadings. We recommend only de-humidifying or vacuum dryers. Extensive drying can cause filling problems and surface defects.


6Drying time0 - 4 h

Drying temperature (τ ≤ -30°C)80°C

Processing moisture0,02 - 0,1%

1Feed section60 - 80°C

2Temperature zone 1 - Zone 4220 - 250°C

3Nozzle temperature230 - 250°C

4Melting temperature230 - 250°C

5Mold temperature60 - 120°C

P NachHolding pressure, spec.300 - 800 bar

P StauBack pressure, spec.30 - 70 bar

Injection speedmedium to high

Screw speed8 - 15 m/min

Warning

The molding machine needs to be purged with polyolefines before and after processing of AKROTEK® PK! There is a risk of cross linking caused by reactions with POM or PA as well as unsuitable master batches! Cross linking is visible through dark spots! In this case purge immediately with polyolefines.

  • Mechanical Properties
    Tensile modulus (1 mm/min | ISO 527-2)
    d.a.m.1500 MPa
    conditioned1500 MPa

    Stress at yield (50 mm/min | ISO 527-2)
    d.a.m.60 MPa
    conditioned60 MPa

    Strain at break (50 mm/min | ISO 527-2)
    d.a.m.> 200 %
    conditioned> 200 %

    Flexural modulus (2 mm/min | ISO 178)
    d.a.m.1900 MPa
    conditioned1500 MPa

    Flexural strength (2 mm/min | ISO 178)
    d.a.m.70 MPa
    conditioned70 MPa

    Charpy impact strength (23°C | ISO 179-1/1eU)
    d.a.m.n.b.
    conditionedn.b.

    Charpy impact strength (-30°C | ISO 179-1/1eU)
    d.a.m.n.b.

    Charpy notched impact strength (23°C | ISO 179-1/1eA)
    d.a.m.10 kJ/m²
    conditioned10 kJ/m²

    Charpy notched impact strength (-30°C | ISO 179-1/1eA)
    d.a.m.3,5 kJ/m²

  • Thermal Properties
    Temperature of deflection under load HDT/A (1,8 MPa | ISO 75)100 °C

    Temperature of deflection under load HDT/B (0,45 MPa | ISO 75)190 °C

    Melting temperature (DSC, 10K/min | DIN EN 11357-1)220 °C

    Coefficent of linear thermal expansion, parallel (23°C bis 80°C | ISO 11359-1/2)1,11 1,0E-4/K

    Coefficent of linear thermal expansion, transverse (23°C bis 80°C | ISO 11359-1/2)1,11 1,0E-4/K

  • Flammability
    Burning rate (UL 94)
    1,6mm Wall thicknessHB Class

    Burning rate (<100 mm/min) (> 1 mm Thickness | FMVSS 302) +

  • General properties
    Density (23°C | ISO 1183)1,24 g/cm³

    Humidity absorption (70°C, 62% r.F. | ISO 1110)0,8 - 0,9 %

    Molding shrinkage (flow | ISO 294-4)1,4 - 1,6 %

    Molding shrinkage (transverse | ISO 294-4)1,5 - 1,7 %

  • Electrical Properties
    Volume resistivity (IEC 60093)
    d.a.m.1,0E+13 Ohm x cm
    conditioned1,0E+10 Ohm x cm

    Surface resistivity (acc. to IEC 60093)
    d.a.m.1,0E+13 Ohm
    conditioned1,0E+10 Ohm

    Comparative tracking index (Test liquid A | IEC 60112)600 V

  • Rheological Properties
    MVR (240°C/2,16kg | ISO 1133)60 cm³/10min

Disclaimer

All specifications and information given on this website are based on our current knowledge and experience. A legally binding promise of certain characteristics or suitability for a concrete individual case cannot be derived from this information. The information supplied here is not intended to release processors and users from the responsibility of carrying out their own tests and inspections in each concrete individual case. AKRO®, AKROMID®, AKROLEN®, AKROLOY®, AKROTEK®, ICX® and PRECITE® are registered trademarks of the Feddersen Group.

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