Influence of glass fibers and rubber particles on the viscoelastic behavior of polyamide 6,6 blended composites

Abstract

Recently, in many industrial fields, there has been a drive to replace traditional metallic components with high strength polymer composites in the interest of reducing weight. Polyamide 6,6 (PA66) is a high strength thermoplastic and the behavior can be further enhanced by the addition of reinforcing fillers. Here, PA66 matrix has been reinforced with chopped glass fiber as well as hybrid composites containing both glass fiber and rubber particles. First, a baseline characterization of the mechanical properties is presented followed by a report on the thermal transitions, melting, crystallization, and glass transition, for the composite and pure materials. It is found that the filled samples show lower degree of crystallization and that the glass filled samples show lower crystallization and melting temperatures. Additionally, it was found that the glass reinforced samples led to a decrease in the glass transition temperature (Tg) while higher testing frequencies corresponded to an increase in Tg. Finally, it was demonstrated that the glass filled compounds were able to better retain their mechanical properties at high temperatures relative to the unreinforced materials. POLYM. COMPOS., 40:3960-3970, 2019.

Novel AA7075/AA2124-SiC-17p laminated structures for aerospace applications: A Comparative study into the mechanical performance of PA6 and PA66 composite interlayers

“…Among thermoplastic polymers, polyamides have received great attention thanks to their unique merit like superior characteristics at elevated temperatures. 27 Polyamide 6 (PA6) with favorable strength, ductility 28 as well as cost-effectiveness, 29 and polyamide 6,6 (PA66) with high mechanical performance 30 and applications in a wide temperature range 31 are of enormous interest by various engineering fields. It is well known that glass fiber (GF) is one of the most popular reinforcing materials for polyamide matrix 32,33 and injection molding is excellent for the fabrication of fiber reinforced thermoplastics due to its performance and cost-effectiveness.…”

Effect of series explosion effects on the fiber length, fiber dispersion and structure properties in glass fiber reinforced polyamide 66

“…The PA/GF composites can take advantage of both GF and PA only if the effective length and good dispersion of the glass fiber are obtained concurrently. However, it is difficult for uniform dispersion because of their poor interface combination and compatibility between GF and PA 12,13 . Generally, the traditional melt blending based on the shear flow has a long thermo‐mechanical process, leading to serious breakage of glass fibers and greatly limiting its reinforcement.…”

Investigation of the properties of PA6/PA610 blends and glass fiber reinforced PA6/PA610 composites

“…[15][16][17] GF reinforced PA composites are encouraging supplies for the automotive part because of their better mechanical properties, lower cost, and lower weight for mass production in proportion to neat PA. [18] There are various studies on GF reinforced PAs and their blend. [15,16,[18][19][20][21][22][23] On the other hand, to the best of our knowledge, there is no study about short GF reinforced PA6/PA610 composite.…”