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Polímeros

Print version ISSN 0104-1428

Abstract

SALMORIA, Gean V.; AHRENS, Carlos H.; VILLAMIZAR, Felix A. Y.  and  SABINO NETTO, Aurélio da C.. Thermal behavior of epoxy/aluminum rapid tooling composite during injection molding of polypropylene. Polímeros [online]. 2008, vol.18, n.3, pp. 262-269. ISSN 0104-1428.  http://dx.doi.org/10.1590/S0104-14282008000300013.

rapid prototyping (RP) and rapid tooling (RT) technologies are gaining increasing importance in the injection molding industry. Casting of resin/metal composites allows the construction of molds with greater resistance than those manufactured by other RT techniques such as Stereolithography. In this work, the thermal behavior of molds manufactured in epoxy/aluminum during the injection molding of polypropylene specimens was investigated. Structural and mechanical characterization of the molded specimens included X ray analysis, hardness and tensile testing. The samples presented small differences in the degree of crystallinity and similar mechanical properties in comparison with samples injected into steel molds. This study showed a reasonable thermal performance of the epoxy/aluminum mold during the injection molding of polypropylene, thus demonstrating the viability of using these molds to produce a few number of prototypes or products with this thermoplastic.

Keywords : Thermal behavior; composite mold; polypropylene injection molding.

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