PK – Polyketone PK GF30 FR(40)AKROTEK® PK-VM GF 30 FR natural (8448)
AKROTEK® PK-VM GF 30 FR natural (8448) is a 30% glass fibre reinforced, flame retardant and process improved Polyketone compound. The flame retardant system is free of red phosphorous and halogens. Due to its good chemical resistance, good dimensional stability and high elongation at break it is suitable for high voltage components in e-mobility.
Tensile modulus (1 mm/min | ISO 527-2) d.a.m. 8600 MPa
Stress at break (5 mm/min | ISO 527-2) d.a.m. 125 MPa
Strain at break (5 mm/min | ISO 527-2) d.a.m. 3,5 %
Charpy impact strength (23°C | ISO 179-1/1eU) d.a.m. 70 kJ/m²
Charpy notched impact strength (23°C | ISO 179-1/1eA) d.a.m. 13 kJ/m²
Burning rate (UL 94) 0,8mm Wall thickness V-0 Class 1,6mm Wall thickness V-0 Class 3,2mm Wall thickness V-0 Class
GWFI (IEC 60695-2-12) 0,8mm Wall thickness 960 °C 1,6mm Wall thickness 960 °C 3,2mm Wall thickness 960 °C
GWIT (IEC 60695-2-13) 0,8mm Wall thickness 775 °C 1,6mm Wall thickness 775 °C 3,2mm Wall thickness 775 °C
Burning rate (<100 mm/min) (> 1 mm Thickness | FMVSS 302) +
Density (23°C | ISO 1183) 1,48 g/cm³
Molding shrinkage (flow | ISO 294-4) 0,3-0,5 %
Molding shrinkage (transverse | ISO 294-4) 0,8-1,0 %
Comparative tracking index (Test liquid A | IEC 60112) 600 V
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.
|Drying time||0 - 4 h|
|Drying temperature (τ ≤ -30°C)||80°C|
|Processing moisture||0,02 - 0,1%|
|Feed section||60 - 80°C|
|Temperature zone 1 - Zone 4||210 - 240°C|
|Nozzle temperature||230 - 240°C|
|Melt temperature||230 - 240°C|
|Mold temperature||60 - 100°C|
|Holding pressure, spec.||300 - 800 bar|
|Back pressure, spec.||30 - 50 bar|
|Screw speed||5 - 10 m/min|
Polyketones crosslink depending on time and temperature, crosslinking is noticed by an increase of viscosity and/or dark spots in natural colored compounds. The melt temperature should be at or below 240 °C and under no circumstances go beyond 250 °C because crosslinking speed will increase. The residence time in the barrel including the hot runner should not exceed 4 min. If interruptions of more than 4 minutes are expected, the barrel and hot runner need to be purged and cleaned with polyolefins. 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 masterbatches! Crosslinking is noticed by an increase of viscosity and or dark spots in natural colored compounds. In this case purge immediately with polyolefines.
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.