Stress relaxation in polyethylene crystallized by orientation
โ Scribed by Yu.M. Boiko; V.V. Kovriga; A.Ya. Gol'dman
- Book ID
- 116049861
- Publisher
- Elsevier Science
- Year
- 1991
- Weight
- 365 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0032-3950
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To study how the properties of extruded medium-density polyethylene products are influenced by the microstructure, rodlike samples, whose morphology can be changed under appropriate processing conditions, were produced by extrusion. A special extrusion line was developed consisting of an extruder eq
## Abstract High density polyethylene with a single crystal texture has been used to examine the variation of yield stress with orientation in both tension and compression. The Coulomb yield criterion, which has previously been applied to yield data in oriented polyethylene, must be rejected since