Mechanical performance of hybrid thermoset composites: Effects of matrix and reinforcement hybridization
Autor: | Tamás Turcsán, László Mészáros |
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Rok vydání: | 2017 |
Předmět: |
Toughness
Materials science Glass fiber General Engineering Vinyl ester Thermosetting polymer 02 engineering and technology Dynamic mechanical analysis Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Differential scanning calorimetry visual_art Ceramics and Composites Shear strength visual_art.visual_art_medium Composite material 0210 nano-technology |
Zdroj: | Composites Science and Technology. 141:32-39 |
ISSN: | 0266-3538 |
DOI: | 10.1016/j.compscitech.2017.01.005 |
Popis: | Hybrid epoxy/vinyl ester (EP/VE) and epoxy/unsaturated polyester (EP/UP) resins were used as matrices to prepare unidirectional carbon fibre (CF) and carbon/glass fibre (CF/GF) reinforced composites targeting toughness of improvement. Hybrid resins were produced simultaneously (one-pot) and sequentially. (Thermo)mechanical properties of hybrid resins were determined in surface hardness, three-point bending, dynamic mechanical analysis (DMA), and differential scanning calorimetry (DSC) tests. Hybrid matrix composites with CF and CF/GF hybrid reinforcements were characterized with quasi-static mechanical (three-point bending) tests performed in 0° (longitudinal) and 90° (transverse) directions. In addition, flexural fatigue tests were run on UD composites. Interlaminar properties were deduced from in-plane shear strength (IPSS) test and fractographic inspection in a scanning electron microscope. The EP/VE hybrid resin exhibited improved energy absorption compared to neat constituent resins in contrast to EP/UP. Using hybrid resins as matrix highly improved the toughness and durability of the corresponding composites. Improved energy absorption was attributed to the phase structure of the hybrid resins, which also positively affected the IPSS. |
Databáze: | OpenAIRE |
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