کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5499197 | 1533493 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Radiation effects on the foaming of atactic polypropylene with supercritical carbon dioxide
ترجمه فارسی عنوان
اثرات تابش در فوم از پلی پروپیلن آتاکتیک با دی اکسید کربن فوق بحرانی
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کلمات کلیدی
پلی پروپیلن، تابش، پیوند متقابل، دی اکسید کربن فوق بحرانی، فومینگ،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
چکیده انگلیسی
Atactic polypropylene (PP) samples with melt flow indices (MFI) of 7.0 g/10 min were irradiated and then foamed with supercritical carbon dioxide (scCO2). A detailed investigation was carried out to understand the effect of radiation on the scCO2 foaming of polypropylene. Variations in the molecular weight, branching degree, crystallinity, and melting and crystallization temperatures of irradiated PP were investigated. The cell diameter, cell density, volume expansion ratio and foaming rate were analyzed in detail under different conditions. It was found that the cell structure of PP foam became more uniform and the foaming temperature window increased to 10 °C. This compares favorably to the 4 °C observed with pristine atactic PP. The best cell morphology was observed at a dose of 30 kGy. The corresponding average diameter and cell density were 16.4μm and 5.7Ã107 cells/cm3, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 131, February 2017, Pages 35-40
Journal: Radiation Physics and Chemistry - Volume 131, February 2017, Pages 35-40
نویسندگان
Chenguang Yang, Xing Zhe, Mingxing Zhang, Mouhua Wang, Guozhong Wu,