Rheological Behavior of Ultrahigh Molecular Weight Polyethylene

被引：1

作者：

Slavnov E.V. ^{[1
]}

Skul’skii O.I. ^{[1
]}

Shakirov N.V. ^{[1
]}

Sudakov A.I. ^{[1
]}

Kuznetsova Y.L. ^{[1
]}

Kryazhevskikh O.V. ^{[1
]}

机构：

[1] Institute of Continuous Media Mechanics, Urals Branch of the Russian Academy of Sciences (ICMM Urb RAS), 1 Acad. Korolev Str., Perm’

来源：

Journal of Engineering Physics and Thermophysics | 2018年 / 91卷 / 05期

关键词：

methods of processing flow curves; rheology; ultrahigh molecular weight polyethylene; viscosimetry;

D O I：

10.1007/s10891-018-1864-2

中图分类号：

学科分类号：

摘要：

This paper presents the results of capillary and rotational viscosimetry of ultrahigh molecular weight polyethylene of brand GUR 2122. It has been established experimentally that in rotational viscosimetry, in the gas there are no uniform rates of shear, which does not permit using traditional methods of processing obtained flow curves. In capillary viscosimetry, rod-like flow is observed. Shear occurs only in the organic near-wall region, and the velocity profile is far from parabolic and lies within traditional methods of viscosity determination. It has been established experimentally that besides the deformation rate influencing the flow stability of viscoelastic materials, ultrahigh molecular weight polyethylene also has limiting breaking deformations. The experimental nonmonotone-flow curve is described from the viewpoint of the modified Vinogradov–Pokrovskii model. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.

引用

页码：1322 / 1330

页数：8

共 14 条

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