MAIN Governing Factors Influencing Mechanical Properties of Short Aramid-Fibres Reinforced Elastomers
In order to obtain optimal performance of short-fibres in elastomers, there are several important governing factors which need special attention:
The interaction/coupling of the fibres to the matrix polymer, in order to withstand shearing forces exerted on the fibre-matrix interface during deformation of the composite;
Homogeneous dispersion of the fibres, without fibre clusters;
Orientation of the short fibres in the matrix, to provoke anisotropy in properties, whenever needed.
In the presentation, a new coupling concept for a short aramid-fibre styrene-butadiene rubber composite is presented. In a mechanistic approach, the relationships between various factors: amount of fibres, processing parameters during mixing, fibre orientation and fibre-rubber interaction, on curing behaviour and mechanical properties are elucidated. The relative importance of either factor in achieving optimal performance is quantified.