Fibre reinforced polymer composites effectiveness

H. Ismail, N. Rosnah, and U. Ishiaku, Oil palm fibre-reinforced rubber composite effects of concentration and modification of fibre surface. Polym. Int. 43(3), 223-230 (1997). 

The theme of the twelve chapters which comprise this book is information which can be used for designing a fibre composite article or structure. The data cover a wide range. There is information on the short- and long-term thermomechanical and electrical properties and behaviour of fibre-reinforced polymer composites, plus their response to fire and environmental effects. Finally the influence of processing on properties and the quality assurance of the final product are also considered. 

EFFECTS OF SILANE COUPLING AGENTS ON THE INTERPHASE AND PERFORMANCE OF GLASS-FIBRE REINFORCED POLYMER COMPOSITES... 

The performance of natural fibre reinforced polymer composites depends on several factors, including fibre chemical composition, cell dimensions, microfibrillar angle, defects, structure, physical and mechanical properties, and the interaction of a fibre with the polymeric matrix [28]. The knowledge about the characteristics of the fibre is essential in order to expand the effective use of lignocellulosic materials for polyethylene composites and to improve their performance. 

Shamsuddoha, M., Islam, M.M., Aravinthan, T., Manalo, A., Lau, K., 2013. Effectiveness of using fibre-reinforced polymer composites for underwater steel pipeline repairs. Composite Stmctures 100, 40—54. 

Almost as critical in commercial practice as the effects of reinforcement on proi>erties are the effects of reinforcement on the cost of the material and on its processing. The perceived effect of material cost depends on whether the decisive factor is cost per unit mass or cost per unit volume. Since the additive normally has a density considerably different from that of the po er matrix, the density of the composite differs from that of the polymer. Consider the fibre-reinforced polymer shown schematically in Figure 6.4. A mass m of composite occupies a volume u. It contains a mass of fibres occupying a volume and a mass of matrix occupying a... 

Joseph K, Thomas S, Pavithran C (1996) Effect of chemical treatment on the tensile properties of short sisal fibre-reinforced polyethylene composites. Polymer 37 5139-5149... 

George et al. [27] studied stress relaxation behaviour of pineapple fibre-reinforced polyethylene composites. They found stress relaxation to be decreased with an increase of fibre content due to better reinforcing effect It is also reported by George et al. [28] that properties of fibre-reinforced composites depend on many factors like fibre-matrix adhesion, volume fraction of fibre, fibre aspect ratio, fibre orientation as well as stress transfer efficiency of the interface. Luo and Netravah [29] found an increase in the mechanical properties of green composites prepared from PALFs and poly(hydroxybutyrate-co-valerate) resin (a biodegradable polymer) with the fibres in the longitudinal direction. However, the researchers reported a negative effect of the fibres on the properties in the transverse direction. 

D. Bachtiar, S. Sapuan, and M. Hamdan, The effect of alkaline treatment on tensile properties of sugar palm fibre reinforced epoxy composites. Mater. Des. 29(7), 1285-1290 (2008). D. Bachtiar, S. Sapuan, and M. Hamdan, The influence of alkaline surface fibre treatment on the impact properties of sugar palm fibre-reinforced epoxy composites. Polym. Plast. Techn ol. Eng. 48(4), 379-383 (2009). 

H.P.S.A. Khalil, and H. Ismail, Effect of acetylation and coupling agent treatments upon biological degradation of plant fibre reinforced polyester composites. Polym. Test. 20, 65-... 

To maximise the mechanical properties of short fibre-reinforced thermoplastic composites, it is necessary to achieve effective stress transfer between fibre and polymer matrix and appropriate fibre alignment in the finished component relative to the direction of applied stress. The former requirement is governed primarily by the method of compounding, whilst fibre orientation is very dependent on moulding conditions [76]. 

V aisman et al. [52] reported the effect of bromination of the surface of commercial UHMWPE fibres in order to polarise the surface of the fibres. This bromination process was shown to result in an increase in the degree of order of the transcrystalline zone when these fibres were combined with HDPE to produce a self-reinforced polymer model composite. While these pubUcations report the use of different types of PE to create self-reinforced polymer composites, UHMWPE fibres have also been combined with ethylene-based copolymers. Kazanci et al. [53, 54] reported the creation of commercial UHMWPE fibre-reinforced ethylene-butene copolymers. Filament wormd structiues were produced, with fibre volume fractions of 65%, with the suggestirm of a potential application for these materials in unspecified medical devices. 

The hot compaction technique was very successfully applied to create self-reinforced polymer composites from numerous polymers, as reported in a series of publications from Hine, Ward and others at the University of Leeds and this clearly demonstrated that self-reinforced polymer composites could be produced without the addition of any extra matrix materials. However, Hine et al. also showed that the incorporation of interleaved isotropic polymer films during fabric ply lay-up may provide improvements in interfacial properties, compared to the interfacial properties of composites formed exclusively from hot compacted fibres [96, 146, 147]. hi the case of PE-based composites, a LDPE film was used as an interleaf film, whereas in the case of PP-based composites, the PP interleaf film was of the same grade as the PP used to create the oriented PP tapes. A more recent publication described the S3mergistic effect of combining interleaved films that also... 

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