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Preliminary datasheet

PK – Polyketone PK

AKROTEK® PK-HM 8 natural (6145)

AKROTEK® PK-HM 8 natural (6145) is an unreinforced, high viscosity polyketone with light inherent color. The compound fulfills the requirements of KTW guidline for cold and hot water as well as the W270 spreadsheet.

Typical applications

Technical components in domestic and industrial sector that are in contact with food and drinking water.

Regulatory

ACSEU10-2011FDAKTW_coldNSF_coldW270WRAS

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.1400 MPa

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

    Strain at yield (50 mm/min | ISO 527-2)
    d.a.m.21 %

    Strain at break (50 mm/min | ISO 527-2)
    d.a.m.>300 %

    Flexural modulus (2 mm/min | ISO 178)
    d.a.m.1500 MPa

    Flexural strength (2 mm/min | ISO 178)
    d.a.m.60 MPa

    Charpy impact strength (23°C | ISO 179-1/1eU)
    d.a.m.n.b. kJ/m²

    Charpy notched impact strength (23°C | ISO 179-1/1eA)
    d.a.m.13 kJ/m²

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

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

  • 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 %

    Water absorption 23°C saturated (23°C, saturated | ISO 62)2,2 %

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

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

  • Rheological Properties
    MVR (240°C/2,16kg | ISO 1133)6 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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