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Authors
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Hintze, C. ; Heinrich, G. ; Wießner, S. ; Wagenknecht, U.
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Title
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Effect of processing parameters on morphology and performance characteristics of aramid fibre-reinforced elastomer composites
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Date
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31.12.2013
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Number
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42043
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Abstract
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A study was conducted of the process-induced dispersion, orientation and length distribution of short-cut aramid fibres (Twaron and Technora) and their influence on the performance characteristics of carbon black-free EPDM. Light and electron microscopies were used for characterisation purposes, together with thermomechanical material tests. The dispersion behaviour of the short fibres was mainly affected by the specific energy input, fibre content and fibre type. The fibre length distribution after incorporation was dependent on fibre type. Technora fibres could maintain higher fibre lengths than Twaron after incorporation. The increase in specific energy input led to more fibre breakage in the Twaron fibres. The short-cut aramid fibres exhibited low fibre-matrix adhesion in the SEM images of fracture surfaces of tensile specimens. The stress-strain curves showed interface-dependent stiffening in the fibre direction as well as failure of the fibre-matrix interface at elongations of more than 50%. There was an increase in the storage and loss moduli and a decrease in the tan delta maximum as the fibre content increased. 16 refs. (Article translated from Gummi Fasern Kunststoffe, No.9, 2012, p.562-567)
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Publisher
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International Polymer Science And Technology
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Wikidata
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Citation
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International Polymer Science And Technology 40 (2013) T/1-T/7
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