نبذة مختصرة : WOS: 000391191100017 ; This study is carried out in order to determine the elastic properties of the Epoxy Resin (ER) / Polyethylene terephthalate (PET) Char Powder Composites by ultrasonic wave velocity measurement method. Plastic waste was recycled as raw material for the preparation of epoxy composite materials. The supplied chars were mixed with epoxy resin matrix at weight percentages of 10 %, 20 % and 30 % for preparing ER/PET Char Powder (PCP) composites. The effect of PET char powder on the elastic properties of ER/PCP composites were investigated by ultrasonic pulse-echo method. According to the obtained results, the composition ratio of 80: 20 is the most appropriate composition ratio, which gave the highest elastic constants values for ER/PCP composites. On the other hand, the best electrical conductivity value was obtained for 70: 30 composition ratio. It was observed that ultrasonic shear wave velocity correlated more perfectly than any other parameters with hardness. ; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [2219/ 2014-1/1059B191400765]; Konya Necmettin Erbakan UniversityNecmettin Erbakan University; TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); Konya Necmettin Erbakan University, TurkeyNecmettin Erbakan University ; This study was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) within the International Postdoctoral Research Scholarship Programme (2219/ 2014-1/1059B191400765) and Konya Necmettin Erbakan University. The author is grateful for the support provided by TUBITAK and Konya Necmettin Erbakan University, Turkey.
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