Effect of injections on the orientation of short fibre composites. An optical microscopic analysis

Short fibre reinforced thermoplastic composites were studied using polyurethane as the matrix and aromatic polyamide, and carbon fibre or regenerated cellulose as the structural component. For each type of fibre, the amount was varied and mechanical properties (tensile and abrasion resistance) and o...

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Bibliographic Details
Published in:Polymer testing 1996-01, Vol.15 (5), p.467-475
Main Authors: Correa, R.A., Nunes, R.C.R., Filho, W.Z.Franco
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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Summary:Short fibre reinforced thermoplastic composites were studied using polyurethane as the matrix and aromatic polyamide, and carbon fibre or regenerated cellulose as the structural component. For each type of fibre, the amount was varied and mechanical properties (tensile and abrasion resistance) and optical microscopy were investigated from injected sheets. The tensile resistance results were in accordance with those observed with the surface light reflected photomicrographs. Arithmetic average values of tensile resistance for samples taken at different directions of stress were close to the values observed for injected pieces in those regions where the fibrillar arrangement in the matrix was random. In general, the abrasion resistance was also improved.
ISSN:0142-9418
1873-2348
DOI:10.1016/0142-9418(96)00007-4