Structural changes in polyethylene during tensile deformation

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塑料 >> 塑料加工

来源：

第四届国际工程塑料研讨会( EP‘2009 8.23-8.26 大连)

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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.

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crysta

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2009-12-03 17:37:04

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flora158 2011-04-01 8:52:44
内容太少了吧

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