کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5207122 | 1382336 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A direct method for evaluating polymer foamability
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In this study, we proposed a direct method to rapidly evaluate polymer foamability by using a new self designed foaming apparatus with nitrogen (N2) as a blowing agent. Two parameters, the foaming temperature window and the correlation factor of the foam density with foaming temperature were used to characterize the foamability. Low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) resins were selected as samples to compare their foamability. The results showed that LDPE had a foaming temperature window as wide as at least 52 °C, whereas that of LLDPE was only 8 °C. Moreover, the foam density and cell morphology were insensitive to foaming temperature for LDPE but sensitive for LLDPE. The inherent capability of LDPE for gas foaming was much better than that of LLDPE.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 30, Issue 1, February 2011, Pages 118-123
Journal: Polymer Testing - Volume 30, Issue 1, February 2011, Pages 118-123
نویسندگان
Chenyang Yu, Ya Wang, Bingtian Wu, Wenguang Li,