Online citations, reference lists, and bibliographies.
← Back to Search

Effect Of Die Temperature On Morphology And Performance Of Polyethylene Pipe Prepared Via Mandrel Rotation Extrusion

M. Nie, X. Li, Xiaoyang Hu, Q. Wang
Published 2014 · Materials Science

Save to my Library
Download PDF
Analyze on Scholarcy
The effect of die temperature on the mechanical performance and morphology of polyethylene (PE) pipe prepared via mandrel rotation extrusion is described. The experimental results showed that during the rotation extrusion of PE pipe, the hoop flow caused by the mandrel rotation was superimposed on the axial flow to deviate the formed shish-kebab from the axial direction which was favorable to improve the hoop strength of the PE pipe. However, high die temperature caused relaxation of most of the oriented molecular chains and the consequent formation of isotropic crystals in the PE pipe, whereas too low a die temperature led to imperfections in the PE pipe. As a result, there was an optimum temperature range for the enhancement of the hoop strength. When the mandrel rotated at 6 r/min, the hoop strength of the PE pipes prepared at the die temperature of 170°C reached the maximum value, 31.8 MPa, 22% and 29% higher than that at 150°C and 210°C, respectively.
This paper references
Self-nucleation of polymers with flow: The case of bimodal polyethylene
L. Balzano (2011)
High-density polyethylene pipe with high resistance to slow crack growth prepared via rotation extrusion
Min Nie (2010)
A mandrel‐rotating die to produce high‐hoop‐strength HDPE pipe by self‐reinforcement
Jiang Long (1998)
Crystallization and dissolution of flow-induced precursors.
L. Balzano (2008)
Formation of Interlinked Shish-Kebabs in Injection-Molded Polyethylene under the Coexistence of Lightly Cross-Linked Chain Network and Oscillation Shear Flow
H. Yang (2012)
Precursor of Shish-Kebab above the Melting Temperature by Microbeam X-ray Scattering
T. Kanaya (2013)
Biaxially oriented polymer tubes by die drawing
A. Taraiya (1996)
On the morphology of polyethylene crystallized from a sheared melt
Ian L. Hosier (1995)
An improved permanganic etchant for polyolefines
R. H. Olley (1982)
Shear-Induced Molecular Orientation and Crystallization in Isotactic Polypropylene: Effects of the Deformation Rate and Strain
R. Somani (2005)
Biaxial orientation of polypropylene by hydrostatic solid state extrusion. Part III: Mechanical properties and deformation mechanisms
H. Tang (1987)
Morphology and property of polyethylene pipe extruded at the low mandrel rotation
Min Nie (2010)
Failure Analysis of Polyethylene Gas Pipes
K. Chaoui (2008)
Control of rotation extrusion over shish‐kebab crystal alignment in polyethylene pipe and its effect on the pipe's crack resistance
Min Nie (2013)
Shish–kebab of polyolefin by “melt manipulation” strategy in injection-molding: A convenience pathway from fundament to application
K. Wang (2008)
Molecular Basis of the Shish-Kebab Morphology in Polymer Crystallization
Shuichi Kimata (2007)
Slow crack growth and associated plastic deformation in linear medium-density polyethylene
J. J. Lear (1990)
The Effect of Rotational Extrusion on the Structure and Properties of HDPE Pipes
Y. Guo (2010)
The Properties of Pipes Produced under the Conditions of Spiral Flow
R. Y. Deberdeev (1974)
Chain extension and orientation: Fundamentals and relevance to processing and products
A. Keller (1993)
Coil-stretch transition of dilute flexible polymers under ultrahigh velocity gradients
P. G. Gennes (1974)
Effect of electron-irradiation on cross-link density and crystalline structure of low- and high-density polyethylene
H. A. Khonakdar (2006)
Shish Formation and Relaxation in Sheared Isotactic Polypropylene Containing Nucleating Particles
A. W. Phillips (2011)
The hierarchy structure and orientation of high density polyethylene obtained via dynamic packing injection molding
W. Cao (2006)
Elementary Mechanics Of Solids
M. Meister (2016)
Hierarchical crystalline structure of HDPE molded by gas-assisted injection molding
G. Zheng (2007)
Orientational Relaxation Together with Polydispersity Decides Precursor Formation in Polymer Melt Crystallization
M. Wang (2005)
Prediction of the remaining lifetime of polyethylene pipes after up to 30 years in use
A. Frank (2009)
Slow crack growth and associated plastic deformation in linear medium-density polyethylene, Ph.D dissertation, University of Illinois at Urbana-Champaign
J. J. Lear (1990)
Probing nucleation and growth behavior of twisted kebabs from shish scaffold in sheared polyethylene melts by in situ X-ray studies
J. Keum (2007)
Thermal Stability of Shear-Induced Shish-Kebab Precursor Structure from High Molecular Weight Polyethylene Chains
Feng Zuo (2006)
Insights into Formation and Relaxation of Shear-Induced Nucleation Precursors in Isotactic Polystyrene
F. Azzurri (2008)
Microinjection molding of microsystem components: new aspects in improving performance
C. Yang (2013)
Shear-Induced Crystallization Precursor Studies in Model Polyethylene Blends by in-Situ Rheo-SAXS and Rheo-WAXD
Ling Yang (2004)
Effect of vibration extrusion on the structure and properties of high‐density polyethylene pipes
Chen Kai-yuan (2009)
Self-reinforced polymeric materials: A review
Á. Kmetty (2010)

This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar