MECHANICAL CHARACTERISTICS IMPROVEMENT FOR EXTRUDED PRODUCTS MADE OF REINFORCED POLYAMIDE
Abstract: The materials analyzed in this paper are from the reinforced polymers class, which are often processed through extrusion. The plastic material used is polyamide 6.6 in natural state and reinforced with glass fibers. Three different degrees of reinforcement are used; respectively 10, 20 and 30% glass fibers. In the present research the authors want to present the influence of the reinforcement degree upon some mechanical characteristics of the products made by extrusion. Considering the homogeneity of the polymeric melt the product’s quality will be analyzed. During the extrusion process a series of parameters (extrusion speed, the pellets feed, processing temperature etc.) are involved and they must be taken into account to achieve calibrated and qualitative products.
Keywords: reinforced polymers, extrusion, polyamide, glass fiber.
Hausnerova, B., Honkova, N., Lengalova, A., Kitano, T., and Saha , P., (2006) Rheology and Fiber Degradation during Shear Flow of Carbon-Fiber-Reinforced Polypropylenes, Polymer Science, Ser. A, Vol. 48, No. 9, pag. 951–960 ISSN 0965-545X.
Popescu, A., Contributions regarding the improvement of extrusion process of polymeric composite materials reinforced with short fibers , PhD Thesis, Cluj Napoca, Septembrie, 2011.
Popescu, A., et al, Experimental and theoretic research regarding optimization extrusion process for polymers reinforced fiber (PA 6.6 – 30 % GF), Acta Technica Napocensis, series: applied mathematics and mechanics Vol.55, Issue I (2012) 239-244.
Rosato, D. V., (1998), Extruding Plastics. A practical processing handbook, Chapman & Hall, London, ISBN 0412828103.