| Structural changes in polyethylene during tensile deformation |
| 關鍵詞： |
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| 類 別： |
塑料 >> 塑料加工 |
| 來 源： |
第四屆國際工程塑料研討會( EP‘2009 8.23-8.26 大連) |
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pdf文件 |
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The structural evolution of an ice-quenched high-density polyethylene (HDPE) subjected to uniaxial tensile deformation at elevated temperatures was examined as a function of the imposed strains by means of combined synchrotron small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) techniques. The data show that when stretching an isotropic sample with the spherulitic structure, intra-lamellar slipping of crystalline blocks was activated at small deformations, followed by a stress-induced fragmentation and recrystallization process yielding lamellar crystallites with their normal parallel to the stretching direction. |
| 上傳人： |
crysta |
| 上傳時間： |
2009-12-03 17:37:04 |
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