AKROTEK®
PK-VM GF 20 natural (8681)PK GF20
AKROTEK® PK-VM GF 20 natural (8681) is a 20% glass fibre reinforced Polyketone with average stiffness and strength. Due to its very good media resistance, the material is suitable for use in applications that carry cooling water. This type was developed as the successor to PK-VM GF 20 natur (5992) in order to meet the requirements for a larger processing window during processing.
Features
Properties
5.700MPa
117MPa
65kJ/m²
Mechanical Properties
Tensile modulus
ISO 527-2
Tensile stress at break
ISO 527-2
Tensile strain at break
ISO 527-2
Charpy impact strength
ISO 179-1/1eU
Charpy notched impact strength
ISO 179-1/1eA
Thermal Properties
Melting temperature
ISO 11357-3
Flammability
Burning rate
UL 94
Burning rate (<100 mm/min)
FMVSS 302
General properties
Density
ISO 1183
Humidity absorption
ISO 1110
Molding shrinkage
ISO 294-4
Documents
Discover all the technical specifications at a single glance here.
Processing information
The values mentioned are recommendations. We only recommend desiccant / dry air dryers or vacuum dryers. Too long a drying time and the resulting residual moisture content below the lower limit can lead to filling problems and surface defects. The specified drying time refers to closed and undamaged bagged material. When processing from previously opened bags or from octabins with polyolefin inliners, a longer drying time may be necessary. It is recommended to check the residual moisture content after the drying process.
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
220 - 260 °C
Nozzle temperature
230 - 260 °C
Melt temperature
230 - 260 °C
Mold temperature
60 - 120 °C
Holding pressure, spec.
300 - 800 bar
Back pressure, spec.
30 - 70 bar
Injection speed
medium to high
Screw speed
8 - 15 m/min
Applications
Explore more exciting application examples that illustrate how our products can be beneficial to you in various situations and industries.
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.