Ilościowe i jakościowe badania roli mączki drzewnej w kompozytach na osnowie polietylenu i polipropylenu = Qualitative and quantitative studies of the role of wood flour in polyethylene and polypropylene ... więcej

Ilościowe i jakościowe badania roli mączki drzewnej w kompozytach na osnowie polietylenu i polipropylenu = Qualitative and quantitative studies of the role of wood flour in polyethylene and polypropylene matrix composites / Wiesław Dziadur, Adam Tabor // W: Jakość i innowacyjność w procesach odlewniczych, obróbce cieplnej i plastycznej oraz w wytwarzaniu materiałów kompozytowych : praca zbiorowa / pod red. Łukasza Miki ; Politechnika Krakowska im. Tadeusza Kościuszki. – Kraków : Wydaw. PK, 2015. – (Monografia / Politechnika Krakowska im. Tadeusza Kościuszki. Mechanika). – S. 215-229 : rys., schem. – Bibliogr. 6 poz., Abstr. – Seria gł.: Monografia / Politechnika Krakowska im. Tadeusza Kościuszki, ISSN 0860-097X ; 494

The purpose of this article was to provide a quantitative stereological research and qualitative fractographic studies to assess the role of the filler in the form of wood flour on the example of the modification ... więcej

The purpose of this article was to provide a quantitative stereological research and qualitative fractographic studies to assess the role of the filler in the form of wood flour on the example of the modification of polyethylene (low density polyethylene LDPE) and polypropylene (PP). As a filler for the modified polymers, LIGNOCEL CB 120 (made by Rettenmaier - a German Company) was used. From each base material (LDPE and PP), three types of the test composites were prepared with the wood flour content of 10, 20 and 30 [wt%]. To prepare the granules for injection, wood flour was mixed on the granulation line with polyethylene and polypropylene, respectively, and dumbbel shaped test samples were injected at the Zakłady Azotowe (the Nitrogen Plant) in Tarnów - Mościce SA. The quantitative evaluation of wood flour was performed on unetched metallographic sections (transverse to the axis of injection) using a computer image analysis system [4]. The complementary fractographic testing was carried out on samples fractured at the temperature of N2 and at ambient temperature. The study demonstrated the usefulness of the method of quantitative stereology as a means to describe the distribution, shape and volume fraction of wood flour in the examined compositions. Microstructural and fractographic studies enabled an assessment of the degree of matching between the wood flour and the microstructure of the base polymer. The degree of matching to the base polymer structure and the uniformity of distribution of the filler did not change with changes in its content.