Polyamide 6-long glass fiber injection mouldings

H. Bijsterbosch, R.J. Gaymans, H. Bijsterbosch

Research output: Contribution to journalArticleAcademicpeer-review

95 Citations (Scopus)
560 Downloads (Pure)


The injection molding ability of long glass fiber reinforced polyamide pellets was studied. The injection moldable materials were produced by a melt impregnation process of continuous fiber rovings. The rovings were chopped to pellets of 9 mm length. Chopped pellets with a variation in the degree of impregnation and fiber concentration were studied. The injection molded samples were analyzed for fiber concentration, fiber length, and fiber orientation. Dumbbell-shaped tensile bars were made to evaluate the mechanical properties. The fibers in the tensile bars had a high orientation in the flow direction and minor fiber concentration gradients were observed. The fiber lengths decreased with fiber concentration from 1.6 mm for a 2 vol% to 0.6 mm for a 25 vol% system. The tensile and impact properties increased considerably with fiber concentration. A low degree of impregnation in the pellets of the fibers resulted in somewhat lower tensile and impact properties.
Original languageUndefined
Pages (from-to)363-368
JournalPolymer composites
Issue number16
Publication statusPublished - 1995


  • METIS-105365
  • IR-71192

Cite this