Товары и услуги
Mineral-Filled Polyketone — Exablend® POK MF25 S
Description
Exablend® POK MF25 S is a polyketone with 25% mineral filler for injection-molded functional parts with high surface quality. Unlike glass-filled grades, mineral filling provides isotropic shrinkage (1.4–1.6% in both directions) — parts stay flat and surfaces remain smooth without fiber show-through.
The mechanical profile is balanced for housing applications: tensile modulus of 2500 MPa, strain at break of 10%, high unnotched impact strength (60 kJ/m²). HDT of 190 °C at 0.45 MPa.
Minimal moisture uptake and the chemical resistance of the POK matrix make it a solid choice for housings, covers, pump and valve components where PA6/POM are limited by moisture or media. Processing: melt 235–250 °C, mold 80 °C, up to 25% regrind.
FAQ
Why mineral filler instead of glass fiber?
Isotropic shrinkage of 1.4–1.6% in both directions eliminates warpage, and part surfaces stay smooth — important for visible housing elements.
How is MF25 S better than POM for housings?
Higher heat resistance (HDT of 190 °C vs ~110 °C for POM) and broader chemical resistance, including alkaline media and fuels.
What are the molding conditions?
Melt 235–250 °C, mold 80 °C, pressure 80–130 MPa. Up to 25% regrind without significant property loss.