Effects of Waxes on the Injection Molding of Carbonyl Iron Powder Author: K. C. Hsu, G. M, Lo, C. C. Lin(Department of Chemistry, National Taiwan Normal University)

Abstract：

This research is to study the effect of the characteristics of three wax-es, namely paraffin wax(PW), carnauba wax(CW) and acrawax(AW), on the ijection molding of carbonyl iron powder/low-density polyethylene (LDPE) mixtures. The rasults indicate that some LDPE molecules were found easier to be aggregated and separated in the mixture containing ei-ther AW or CW. The feedstocks of all wax systems show pseudoplastic be-havior. Both AW and CW systems appear to exhibit worse fluidity and better pseudoplasticity than the PW system. Burrs might appear in the g-reen parts of the PW system. The specimens of all wax systems, after de-binding and sintering, show good surface appearance, The PW system ex-phibits the highest tensile strength in the resulting sintered parts, followed by CW and AW systems.

Keywords：carbonyl iron powder, wax, injection mloding

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