Titolo: Thermoplastic Composites Based on Poly(ethylene 2,6-naphthalate) and Basalt Woven Fabrics: Static and Dynamic Mechanical Properties
Autori: Luigi Sorrentino, Davi Silva De Vasconcellos, Marco D'Auria, Fabrizio Sarasini, Salvatore Iannace
Rivista: Polymer Composites
Anno di Pubblicazione: 2015
Abstract: Composites based on poly(ethylene 2,6-naphthalate) and basalt woven fabrics have been investigated with the aim to develop composites with a minimum service temperature of 100˚C. Laminates have been manufactured by using the film-stacking technique. A very low void content and a good fabric impregnation has been obtained as confirmed by the morphological analysis performed with scanning electron microscopy. Static flexural modulus and strength have been measured at 20, 60, and 100˚C and compared with the dynamic mechanical behavior, evaluated from 2100 to 220˚C. A very good agreement has been detected between static and dynamic tests, proving that the dynamic mechanical analysis can be used to estimate the flexural modulus in a wide temperature range. Poly(ethylene 2,6-naphthalate)/basalt composites have exhibited (at 20˚C) a flexural modulus and strength as high as 20 GPa and 320 MPa, respectively. The flexural modulus and the flexural strength at 100˚C have been found to be equal to 18 GPa and 230 MPa, confirming that this system can retain very good mechanical properties at a service temperature of 100˚C.