Tehnički vjesnik, Vol. 25 No. 6, 2018.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20160713104159
The Use of Untreated Neuburg Siliceous Earth as Filler for High-Density Polyethylene
Karolina Głogowska
orcid.org/0000-0002-6972-6219
; University of Technology, Department of Polymer Processing, Nadbystrzycka 38 D, 20-618 Lublin, Poland
Janusz W. Sikora
; University of Technology, Department of Polymer Processing, Nadbystrzycka 38 D, 20-618 Lublin, Poland
Johannes Blase
; Westsächsische Hochschule in Zwickau, Institut für Produktionstechnik, Westsächsische Hochschule Zwickau, Dr. Friedrichs Ring 2A, 08056 Zwickau, Germany
Sažetak
This paper reports the results of a study on twin-screw direct extrusion run at a screw speed of 120 rev/min to produce a composite pellet product which was used for an injection molding process and after that subjected to static tensile testing as well as hardness and specimen morphology examination. As filler, we used untreated Neuburg siliceous earth (NSE) marketed under trade names Silitin Z86 and Silitin V88 ranging from 10 to 60 wt% in a matrix made of high-density polyethylene (PE-HD) Hostalen GD 7255. The results demonstrate that Young‘s modulus and maximum tensile stress of the polyethylene composite with untreated Neuburg siliceous earth first decrease and then increase with increasing the filler’s content. The addition of Silitin Z86 causes an increase in tensile stress at break while the addition of Silitin V88 leads to its decrease. Strain at maximum tensile stress of the tested molded pieces first increases with increasing the filler’s content, but then starts to decrease. The tested composite molded pieces have lower strain at break as opposed to those without the filler. An increase in the filler’s content leads to an increase in hardness of the tested specimens. The results of specimen morphology demonstrate that the filler is unevenly distributed in the polymer and reveals a strong tendency to agglomerate.
Ključne riječi
mechanical properties; material testing; polymer composites; twin-screw direct extrusion
Hrčak ID:
212808
URI
Datum izdavanja:
16.12.2018.
Posjeta: 1.379 *