کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5022264 1469484 2017 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of rigidity for rubber-toughened polypropylene via localization of carbon nanotubes
ترجمه فارسی عنوان
بهبود سختی برای پلیپروپیلن سخت لاستیک از طریق محلی سازی نانولوله های کربنی
کلمات کلیدی
نانولوله های کربنی، کامپوزیت پلیمر ماتریس، ویژگی های مکانیکی، مخلوط کردن،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
A methodology for controlling the localization of multi-walled carbon nanotubes (MWCNTs) was studied using an immiscible polymer blend composed of isotactic polypropylene (PP) and ethylene-co-propylene rubber (EPR). We found that the MWCNTs were localized in EPR domains within the composite, which was prepared at 280 °C. EPR molecules bonded to the MWCNT surface are responsible for the localization in EPR. Conversely, MWCNTs preferentially resided in the matrix when the composite was prepared at 190 °C along with nitrogen gas purging. Because of the selective localization of the MWCNTs in the matrix, the composite obtained via mixing at the lower temperature exhibited a higher Young's modulus and yield strength. These findings demonstrate that mixing conditions greatly affect the MWCNT distribution and thus the mechanical properties of PP/EPR blends.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 141, 22 March 2017, Pages 106-112
نویسندگان
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