A comparative study of fiber breakage in compounding glass fiber-reinforced thermoplastics in a Buss kneader, modular co-rotating and counter-rotating twin screw extruders

摘要

The breakage of glass fibers was measured for several different types of continuous mixers including (i) Buss Kneader, (ii) modular intermeshing co-rotating twin screw extruder, and (iii) modular intermeshing counter-rotating twin screw extruder. Comparisons are made using different screw configurations, loadings, feeding ports, and mixing elements. Downstream feeding of glass fibers and milder screw configuration favor less breakage of glass fibers. (Composite matrix resin: polypropylene.)