Transactions of Nanjing University of Aeronautics & Astronautics
Special Issue for Wind Turbine
Improvement of Mechanical, Thermal and Dynamic-Mechanical Properties of Noil Ramie Fiber Reinforced Polyethylene Composites
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Abstract:
Noil discarded fibers from producing fibers for textile industry have short length and are always considered less valuable. In this paper, noil ramie fibers/HDPE composite was prepared using twin-screw extruder and the thermal and dynamic mechanical properties were studied. The influence of ramie fibre and maleic anhydride-grafted polyolefin (MA-g-PO) on mechanical, thermal and dynamic mechanical properties was investigated. It is observed that the tensile, flexural and impact properties of the composites treated with MA-g-PO are all improved in comparison to the untreated composites. Dynamic mechanical properties of the composite with MA-g-PO show an increase in storage modulus and a higher α relaxation peak of the treated composites, which indicates a improved interfacial bonding between fiber and matrix by the MA-g-PO addition. Furthermore, the change in TGA thermograms of composite caused by MA-g-PO exhibit that addition of MA-g-PO is also helpful to increase the thermal stability of noil ramie fiber/HDPE composites.
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