RT info:eu-repo/semantics/article
T1 Star-branched polyamides as the matrix in thermoplastic composites
A1 Núñez Carrero, Karina Carla
A1 Herrero Villar, Manuel
A1 Asensio Valentín, María
A1 Guerrero, Julia
A1 Merino Senovilla, Juan Carlos
A1 Pastor Barajas, José María
K1 Polyamide
K1 Poliamidas
K1 Polymers
K1 Thermoplastic composites
K1 Thermoplastics
K1 Termoplásticos
K1 Welding
K1 Chemistry
K1 2206.10 Polímeros
K1 3316.14 Soldaduras
K1 3312 Tecnología de Materiales
K1 23 Química
AB The aim of this study is the preparation of star-shaped branched polyamides (sPA6) with low melt viscosity, but also with improved mechanical properties by reactive extrusion. This configuration has been obtained by grafting a tri-functional, three-armed molecule: 5-aminoisophthalic-acid, used as a linking agent (LA). The balance between the fluidity, polarity and mechanical properties of sPA6s is the reason why these materials have been investigated for the impregnation of fabrics in the manufacture of thermoplastic composites. For these impregnation processes, the low viscosity of the melt has allowed the processing parameters (temperature, pressure and time) to be reduced, and its new microstructure has allowed the mechanical properties of virgin thermoplastic resins to be maintained. A significant improvement in the ultrasonic welding processes of the composites was also found when an energy director based on these materials was applied at the interface. In this work, an exhaustive microstructural characterization of the obtained sPAs is presented and related to the final properties of the composites obtained by film stacking.
PB MDPI
SN 2073-4360
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/62263
UL https://uvadoc.uva.es/handle/10324/62263
LA eng
NO Polymers, 2022, Vol. 14, Nº. 5, 942
NO Producción Científica
DS UVaDOC
RD 22-nov-2024