Yazar "Guldas, Abdulmecit" seçeneğine göre listele

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    Investigation of Melt Flow Index Properties of Polypropylene Reinforced Aluminum Powder
    (Gazi Univ, 2017) Guldas, Abdulmecit; Temel, Servet; Altug, Mehmet
    In this study, PP-based composite reinforced with three pressures, three temperatures, three reinforcement rates, and three reinforcement sizes were produced and their Melt Flow Index (MFI) properties were investigated. Moreover, 0.2% maleic anhydride and fenolic based antioksidant in order to prevent oxidation were also added during addition of aluminum powders. According to the results of the study, MFI values degreases with increasing viscosity. On the contrary, MFI values increases with increasing shear rate and shear stress. In addition, values of 1379 kPa, 250 C, 5%, 210-300 mu m and 44-100 mu m were determined as pressure, temperature, reinforcement ratio and particle size respectively for the samples having high MFI values.
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    Öğe
    Mechanical properties of aluminum powder reinforced polypropylene
    (Carl Hanser Verlag, 2017) Guldas, Abdulmecit; Altug, Mehmet; Temel, Servet
    In this study, PP-based composites reinforced were produced by using three injection pressures IP (50, 55, 60 MPa), three injection temperatures IT (210, 220, 230 degrees C), three holding pressures HP (35, 40, 45 MPa), three reinforcement rates Rr (5, 10, 15 wt.-%) and three reinforcement sizes Rs (44-100, 101-210, 210-300 mu m) and their mechanical properties were investigated. Moreover, 0.2 % maleic anhydride was also added in order to prevent oxidation during addition of aluminum powders. The best results in terms of tensile strength were obtained from the specimen with the code C2, with the parameter values R-s = 100 -210 mu m, R-r = 15 wt.-%, I-T = 230 degrees C, I-P = 50 MPa and H-P = 40 MPa. The best results in the tensile tests were received from the specimen with code A2, having the parameter values R-s = 100-210 mu m, R-r = 5 wt.-%, I-T = 210 degrees C, I-P = 50 MPa and H-P = 35 MPa. On the other hand, the best results in the izod tests were obtained for the specimen with the code C1 with the parameter values R-s = 44-100 mu m, R-r = 15 wt.-%, I-T = 210 degrees C, I-P = 60 MPa and HP = 45 MPa.