پديدآورندگان :
Shahbakhsh Soraya MSc Student, Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan,Iran , Khosravi Hamed hkhosravi@eng.usb.ac.ir Assistant Professor, Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan,Zahedan, Iran; , Tohidlou Esmaeil Assistant Professor, Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan,Zahedan, Iran
كليدواژه :
Multiscale composites , Nano , calcium carbonate , Surface modification , Mechanical testing.
چكيده فارسي :
The effect of silane modified nano-calcium carbonate (nano-CaCO3) on the tensile properties of unidirectional carbon fiber (UCF)/epoxy composites was evaluated. Firstly, the nano-CaCO3 particles were modified with 3-glycidoxypropyltrimethoxysilane (3-GPTMS), which was confirmed by fourier transform infrared (FTIR) spectroscopy. Different weight percentages of 3-GPTMS/CaCO3 (0, 0.5, 1, 3 and 5 wt.%) were dispersed in the polymer matrix using a combination of highintensity ultrasonication and mechanical stirring routes and the resultant mixture was then employed to fabricate the multiscale composites via the hand lay-up route. The results revealed that the 3-GPTMS/CaCO3 incorporation offered an increase in the tensile strengths up to 3 wt.% and afterwards they declined. Microscopic examination identified the possible mechanisms responsible for the improved tensile properties of the 3-GPTMS/CaCO3 enhanced composites. Totally, the results of the study show that matrix modification with 3-GPTMS/CaCO3 is an effective strategy to improve the tensile behavior of fibrous composites.
