دانلود مقاله ISI انگلیسی شماره 57822
ترجمه فارسی عنوان مقاله

نانوکامپوزیت نانولوله کربنی الکتریکی / کربن / پلی پروپیلن با خواص مکانیکی بهبود یافته

عنوان انگلیسی
Electrically conductive carbon nanotube/polypropylene nanocomposite with improved mechanical properties
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی ترجمه فارسی
57822 2015 6 صفحه PDF سفارش دهید
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منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Materials & Design, Volume 85, 15 November 2015, Pages 76–81

ترجمه کلمات کلیدی
نانولوله کربنی، پلی پروپیلن، مخلوط کردن ذوب، خواص الکتریکی، ویژگی های مکانیکی، ریز ساختار
کلمات کلیدی انگلیسی
Carbon nanotube; Polypropylene; Melt mixing; Electrical properties; Mechanical properties; Microstructure

چکیده انگلیسی

Conductive polymer nanocomposites based on carbon nanotubes (CNTs) have wide range of applications in the electronics and energy sectors. For many of these applications, such as the electromagnetic interference (EMI) shielding, high nanofiller loading is typically needed to achieve the desired properties. The high nanofiller concentration deteriorates the composite's tensile strength due to the increase in nanofiller aggregation. In this work, highly conductive CNT/polypropylene (PP) nanocomposite with improved tensile strength was prepared by melt mixing. The effects of CNT content on the processing behavior, microstructure, mechanical and electrical properties of the nanocomposite were investigated. Scanning electron microscopy was used to investigate the composite microstructure. Good level of CNT dispersion with remarkable adhesion at the CNT/PP interface was observed. Based on a theoretical model, the interfacial strength was estimated to be in the range of 36–58 MPa. As a result of this microstructure, significant enhancement in ultimate tensile strength was reported with the increase of CNT content. The tensile strength of the 20 wt.% CNT/PP nanocomposite was 80% higher than that of the unfilled PP. Moreover, and due to the good dispersion of CNT particles, an electrical percolation threshold concentration of 0.93 wt.% (0.5 vol.%) was obtained.

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