Tribological studies of polyamide 6 and high-density polyethylene blends filled with PTFE and copper oxide and reinforced with short glass fibers

M. Palabiyik, S. Bahadur*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

166 Citations (Scopus)

Abstract

The mechanical and tribological behaviors of polyamide 6 (PA6) and high density polyethylene (HDPE) polyblends made using maleic anhyride polypropylene as the compatibilizing agent were studied. The compositions investigated for tribological behavior were 80 wt.% PA6-20 wt.% HDPE and 60 wt.% PA6-40 wt.% HDPE. The polyblends were reinforced with glass fiber (GF) and filled with polytetrafluoroethylene (PTFE) and copper oxide (CuO). The polymeric materials were blended using a modular intermeshing co-rotating twin-screw extruder. The reinforced composite specimens with different fiber proportions were made in a reciprocating screw injection molding machine using the blended materials as the feed stock. The friction and wear experiments were run under ambient conditions in a pin-on-disk machine with the polymer pin riding on the flat surface of a steel disk at a sliding speed of 1 ms-1 and under a nominal pressure of 0.64 MPa. The tensile strength of the polyblend with composition 80 wt.% PA6-20 wt.% HDPE increased with fiber reinforcement but the material became brittle. The maximum reductions in wear and the coefficient of friction were obtained by filling the polyblends with 10 wt.% PTFE. The fiber glass reinforcement was not found effective in lowering the already low wear rate of the polyblend.

Original languageEnglish
Pages (from-to)369-376
Number of pages8
JournalWear
Volume253
Issue number3-4
DOIs
Publication statusPublished - Aug 2002

Keywords

  • Filled polymer
  • Friction
  • High density polyethylene
  • Polyamide
  • Polyblends
  • Reinforced polymer
  • Tribology
  • Wear

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