EFECTUL OXIDULUI DE ZINC ŞI AL BORATULUI DE ZINC ASUPRA PROPRIETĂŢILOR MECANICE ALE POLIETILENEI DE ÎNALTĂ DENSITATE EFFECT OF ZINC OXIDE AND ZINC BORATE ON MECHANICAL PROPERTIES OF HIGH DENSITY POLYETHYLENE

Umut Yerlesen, Münir Tasdemir
2015 Revista Română de Materiale / Romanian Journal of Materials   unpublished
The effect of zinc oxide (ZnO) and zinc borate (ZnHBO 3) on the mechanical properties of high density polyethylene (HDPE) was investigated. Composites of HDPE with zinc oxide and zinc borate were prepared by melt mixing in a twin screw extruder and then the composites were molded by compression molding method. Filler contents in the HDPE were 5, 10 and 15 wt%. The dispersion of zinc oxide and zinc borate particles in the matrix polymers was investigated using SEM. It was observed that the
more » ... rved that the dispersion of ZnO and ZnHBO 3 particles were relatively good with low ZnO and ZnHBO 3 content but the aggregates of ZnO and ZnHBO 3 particles in a polymer matrix increased with increasing content. The mechanical test showed that the elasticity modulus, hardness and density of HDPE composites increased with increasing ZnO and ZnHBO 3 content. The addition of fillers to the HDPE changed the wear rate of the composites as well.
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