摘要

Natural fibres are promising reinforcements for use in composite materials due to the low cost, high specific strength and modulus, easy availability, especially the renewability and environmental friendly characteristics. In this paper, multi-scale structures of different natural fibres were clearly revealed with the aid of optical microscopy (OM) and environmental scanning electron microscopy (ESEM). Based on the observed microstructures, a model of the multi-scale structures of natural fibres was assumed and the mechanical properties of natural fibre were predicted, which showed good agreement with the statistical analysis results of the experimental data obtained by single fibre tensile test. Some recent work on the acoustic properties and thermal insulation properties of natural fibre reinforced composites (NFRCs) were reported and their potential applications in making automobiles parts were also investigated.