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- 저자 : M. Ghorbanzadeh Ahangari (검색결과 1 건)
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M. Fathalian,M. Ghorbanzadeh Ahangari,A. Fereidoon 한국섬유공학회 2019 Fibers and polymers Vol.20 No.8
An investigation of nanosilica (SiO2), influencing the mechanical and thermal attributes of carbon fiber (CF)/polycarbonate (PC) laminates, is described in this study. Polycarbonates with four different weight percentages of SiO2 (PCSiO2,0.1, 0.3, 0.6 and 1.0 wt%) were prepared using a melt-blending technique. The PC-SiO2 nanocomposites were thenused to fabricate planar CF/PC laminates through a hot hydraulic press machine. The prepared laminates were characterizedby a number of different techniques; namely, tensile tests, dynamic mechanical thermal analysis (DMTA), differentialscanning calorimetry (DSC), thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM). The tensile testfindings revealed that when 0.6 wt% of SiO2 was added to the laminate layers, the maximum tensile modulus and yield stresswere achieved. The mechanical properties obtained by DMTA supported the tensile test results. It should be noted that the0.6 wt% of SiO2 had the highest mechanical properties. The DMTA and DSC analyses were used to measure the glasstransition temperatures (Tg) of laminates. We found that with the addition 0.6 wt% of SiO2 the Tg increased to approximately1 oC compared to 0 oC for the neat CF/PC laminate, meaning that by adding up 0.1 to 0.6 nanosilica to the polymer, the valueTg first increased and then decreased. To characterize the mass loss, the thermal degradation of polycarbonate influenced bynitrogen was investigated through TGA. According to our TGA results, the highest thermal stability was achieved by adding0.6 wt% of SiO2 to the PC.
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