کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9635845 | 1427492 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High damping property of microcellular polymer prepared by friendly environmental approach
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Foaming of polyurethane (PU) films using supercritical CO2 as a blowing agent, a “green” and high-efficient approach, has been studied. Microcellular foam material was prepared by saturating the polymer with CO2 and its morphology was characterized by scanning election microscopy (SEM). The influence of processing parameters, such as pressure, temperature and soaking time, on the foam morphology was investigated. It was found that the size and distribution of the micro-cell could be controlled conveniently by changing the processing conditions. The results of dynamic mechanical temperature analysis (DMTA) showed that the damping property of the foamed materials was greatly improved and had a maximum value, tan δ = 3.88 at 63 Hz due to the properties of the storage and loss moduli compared with the original PU. Reduction of the mass density led to a decline in the mechanical properties of the foamed materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 33, Issue 3, March 2005, Pages 259-267
Journal: The Journal of Supercritical Fluids - Volume 33, Issue 3, March 2005, Pages 259-267
نویسندگان
Xinhua Dai, Zhimin Liu, Yong Wang, Guanying Yang, Jian Xu, Buxing Han,