Correlation of injection moulding parameters with mechanical and morphological aspects of natural fibre reinforced thermoplastics
M.A. Saleh,,; I. Taha; Ebeid, Samy;
Abstract
The mechanical behaviour of fibre reinforced composites depends – amongst other
things – on the morphological structure. This in turn is greatly affected by the processing
conditions. In this study a 10 weight % flax fibre reinforced high density
polyethylene composite is prepared by extrusion compounding followed by injection
moulding. The effect of injection temperature, speed and rotational screw
speed on the morphology of fibres and matrix are studied and related to the tensile
and impact behaviour of the composites. Results indicate that fibre length is easily
affected by all parameters under consideration. Whereas a higher injection temperature
allows the preservation of fibre length, an excessive increase in temperature,
however, leads to their thermal degradation. Increased injection and rotational
speeds further introduce excessive shear stresses on the fibre, causing their breakage,
similarly leading to reduced mechanical performance. Matrix structure is mainly
affected by the injection temperature, where its increase leads to the reduction in
the degree of crystallinity and thus also a decrease in tensile strength. Other processing
parameters prove to have minor effect on matrix morphology.
things – on the morphological structure. This in turn is greatly affected by the processing
conditions. In this study a 10 weight % flax fibre reinforced high density
polyethylene composite is prepared by extrusion compounding followed by injection
moulding. The effect of injection temperature, speed and rotational screw
speed on the morphology of fibres and matrix are studied and related to the tensile
and impact behaviour of the composites. Results indicate that fibre length is easily
affected by all parameters under consideration. Whereas a higher injection temperature
allows the preservation of fibre length, an excessive increase in temperature,
however, leads to their thermal degradation. Increased injection and rotational
speeds further introduce excessive shear stresses on the fibre, causing their breakage,
similarly leading to reduced mechanical performance. Matrix structure is mainly
affected by the injection temperature, where its increase leads to the reduction in
the degree of crystallinity and thus also a decrease in tensile strength. Other processing
parameters prove to have minor effect on matrix morphology.
Other data
Title | Correlation of injection moulding parameters with mechanical and morphological aspects of natural fibre reinforced thermoplastics | Authors | M.A. Saleh,, ; I. Taha ; Ebeid, Samy | Keywords | Flax fibre / high density polyethylene / injection moulding / viscosity / mechanical properties | Issue Date | 2018 | Publisher | © 2018 WILEY-VCH Verlag GmbH & CO. KGaA, Weinheim | Journal | Mat.-wiss. u. Werkstofftech. 2018, 49, 193–205 | Series/Report no. | Mat.-wiss. u. Werkstofftech. 2018, 49, 193–205;Mat.-wiss. u. Werkstofftech. 2018, 49, 193–205 | DOI | DOI 10.1002/mawe.201700200 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.