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R. Oliwa, M. Oleksy, M. Heneczkowski, G. Budzik, O. Markowska, Ł. Przeszłowski

Application of vacuum casting technology for manufacturing of polymeric gears prototypes

Polimery 2017, No 1, 36


DOI: dx.doi.org/10.14314/polimery.2017.036

Summary

In this study, the nanocomposites based on two-component polyurethane resin RenPIM-VG5286 (PUR) with added nanofillers Nanobent® ZR1 and ZR2, previously modified with octakis(tetramethylammonium)octasilsesquioxane and octakis{3-[N-(hydroxyethyl)dimethylamino]-propyl}octasilsesquioxane, were examined for application to vacuum casting technology (VC). The reactivity of the molding compositions (gel time and maximum curing temperature) as well as their thixotropic properties, which have an important impact on the technology process of prototyping gears in silicone matrices, were investigated. The effect of nanofiller type on the functional properties of the resulting composites was also determined. It was demonstrated that by introducing the hybrid filler system, areduction in radial and axial shrinkage was achieved, which led to aradical improvement in the dimensional stability of gear castings.


Keywords: two-component polyurethane resin, gel time, thixotropy, nanofillers, nanocomposites, gears, vacuum casting
e-mail: molek@prz.edu.pl

R. Oliwa, M. Oleksy, M. Heneczkowski, G. Budzik, O. Markowska, Ł. Przeszłowski (726.2 KB)
Application of vacuum casting technology for manufacturing of polymeric gears prototypes