Abstract
The effects of filler characteristics (aspect ratio, particle size) and their surface treatment on the mechanical performance of chopped glass fiber (GF) and/or talc filled poly(butylene terephtalate) (PBT) were investigated. The materials were prepared according to the Radlite-process, which belongs to the slurry deposition ones. It was established that talc may replace GF to some extent without affecting the mechanical property profile. The particle size and the surface treatment of the talc did not influence much the composites properties. Surprisingly GF of smaller length resulted in a better mechanical performance which was explained by a preferred orientation of the GF during the slurry deposition process.