Study into the Mechanical Properties of a New Aeronautic-Grade Epoxy-Based Carbon-Fiber-Reinforced Vitrimer

Polymers

Josep Costa¹  Nerea Markaide²  Alaitz Ruiz de Luzuriaga²  Asier M. Salaberria²  Vincent Gayraud³  Maria Eugenia Rodriguez³  Cristian Builes Cárdenas³  Diego Calderón Zapatería⁴  Priya Dasan Keeryadath⁵ 

[1] Analysis and Advanced Materials for Structural Design (AMADE), Polytechnic School, Campus Montilivi, University of Girona, 17071 Girona, Spain;CIDETEC, Basque Research and Technology Alliance (BRTA), Paseo Miramón, 196, 20014 Donostia-San Sebastián, Spain;Composites Unit, Eurecat—Technological Center of Catalonia, 08290 Cerdanyola del Vallès, Spain;IDEC, Engineering Composites Advanced Solution, C/Albert Einstein 29, 01510 Miñano Menor, Spain;ÉireComposites Teo, An Choill Rua, H91 Y923 Inverin, County Galway, Ireland;

关键词: vitrimers;    carbon fiber composites;    aeronautical industry;    mechanical properties;   

DOI  :  10.3390/polym14061223

来源: DOAJ

【 摘 要 】

The current drive for sustainability demands recyclable matrices for composite materials. Vitrimers combine thermoset properties with reprocessability, but their mechanical performance in highly loaded applications, for instance, composites for aeronautics, is still to be demonstrated. This work presents the complete mechanical characterization of a new vitrimer reinforced with carbon fiber. This vitrimer formulation consists of functional epoxy groups and a new dynamic disulfide crosslinks-based hardener. The testing campaign for the vitrimer composites encompassed tension, compression, interlaminar shear strength (ILSS), in-plane shear (IPS), open-hole tension (OHT) and compression (OHC), filled-hole compression (FHC) and interlaminar fracture toughness tests under mode I and II. Test conditions included room temperature and high temperature of 70 °C and 120 °C, respectively, after moisture saturation. Tension and flexural tests also were applied on the neat vitrimer resin. The results compared well with those obtained for current aeronautic materials manufactured by Resin Transfer Molding (RTM). The lower values observed in compression and ILSS derived from the thermoplastic veils included as a toughening material. This work demonstrates that the vitrimer formulation presented meets the requirements of current matrices for aeronautic-grade carbon-reinforced composites.

【 授权许可】

Unknown