ABSTRACT
The long fibre reinforced thermoplastic (LFRTP) moulding has better some mechanical properties than the short fibre reinforced thermoplastic (SFRTP) moulding. Recently, a new moulding process has been developed to be appropriate for LFRTP pellets and the fibre length in the moulding is longer than general injection moulding one. But in the new process moulding, the fibre dispersion, that is a filamentisation, is not better than in the conventional injection moulding.
In this study, we noticed the fibre filamentisation in the moulding and proposed an evaluational method of the filamentisation. Firstly, we confirm the validity of the evaluational method with comparison to the qualitative evaluation. Secondly, we estimated the fibre filamentisation in the moulding quantitatively by using that method. Lastly, we investigated the relationship between the fibre filamentisation and the mechanical property.
In the result of this study, we detect the correlation between the evaluated value of the fibre filamentisation and the tensile strength of the moulding.
