Development of Thermoplastic Composite Tube from HDPE/Barley Straw Fibers Using Extrusion Method

• Published in: Key engineering materials Vol. 910; pp. 478 - 483
• Main Authors: Ayrilmis, Nadir, Chalganov, Dmitry K., Kuzmin, Anton M.
• Format: Journal Article
• Language: English
• Published: Trans Tech Publications Ltd 15.02.2022
• Subjects: Temperature; Wood-Polymer Composite; Compounding; Forming Die; Thermoplastic Composite; Conveyor Belt; Pressure; Single-Screw Extruder
• ISSN: 1013-9826; 1662-9795; 1662-9795
• DOI: 10.4028/p-1amod0

This paper was devoted to the technological process of manufacturing a biocomposites tube made of low-density polyethylene and barley straw fibers. 50% of HDPE, 42% barley straw, 5% of shungite (mineral filler), 2% Maleid F (N, N-metaphenylenediamine) as coupling agent, and 1% Hexol CLA as lubricant were pre-mixed before compounding. The compounding of the raw materials was carried out on a co-rotating twin-screw extruder. The resulting granules were fed into the single screw extruder to obtain thermoplastic composite tubes. The temperature regime for the HDPE/barley straw composite processing was in the range of 145-160 °C and the screw rotation speed was 50 rpm. The tensile strength and modulus were found to be 27.7 MPa and 1687 MPa, respectively. The water absorption (24-h) and density of the specimens were 1.43% and 1.158 g/cm3, respectively. Based on the findings obtained from the present study, it can be said that the barley straw can be efficiently used in the production of tube formed HDPE composites.