Hierarchical distribution of β -phase in compression- and injection-molded, polypropylene-based TPV

Bao, Rui-Ying, Yang, Wei, Tang, Xue-Gang, Xie, Bang-Hu and Yang, Ming-Bo (2011) Hierarchical distribution of β -phase in compression- and injection-molded, polypropylene-based TPV. Journal of Macromolecular Science, Part B: Physics, 50 1: 62-74. doi:10.1080/00222341003609518


Author Bao, Rui-Ying
Yang, Wei
Tang, Xue-Gang
Xie, Bang-Hu
Yang, Ming-Bo
Title Hierarchical distribution of β -phase in compression- and injection-molded, polypropylene-based TPV
Journal name Journal of Macromolecular Science, Part B: Physics   Check publisher's open access policy
ISSN 0022-2348
1525-609X
Publication date 2011-01
Year available 2010
Sub-type Article (original research)
DOI 10.1080/00222341003609518
Volume 50
Issue 1
Start page 62
End page 74
Total pages 13
Place of publication Philadelphia, PA, United States
Publisher Taylor & Francis
Collection year 2011
Language eng
Abstract The distribution of theβ-phase crystals of polypropylene (PP) in different zones of compression and injection moldings molded from PP-based dynamically vulcanized thermoplastic elastomer (TPV) in the presence of a β-nucleating agent (β-NA) was investigated. The influence of shear and cooling conditions and the addition of -NA on the development of -phase was examined and discussed based on the one-dimensional heat conduction behaviors with phase change. A hierarchical distribution of -phase was observed in both compression- and injection-molded TPV/β-NA specimens. For the compression-molded TPV/β-NA specimens, the hierarchical distribution of -phase induced by -NA is dominated by the cooling conditions. For the injection-molded TPV/β-NA specimens, the occurrence of -phase is also mainly induced by the addition of β-NA; the effect of shear on the relative content of -phase can hardly be observed and the cooling conditions control the hierarchical distribution of β-phase. Both in compression and injection-molded TPV/β-NA specimens, the relative content of β-phase increases from the skin to the core zones, owing to the cooling rate decreasing from the skin to the core zones. Copyright © Taylor & Francis Group, LLC.
Keyword Beta nucleating agent
Beta-phase
Cooling conditions
Shear
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Online publication date: 20 November 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
 
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Created: Sun, 02 Jan 2011, 00:12:18 EST