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Study on the solidification kinetics of high-density polyethylene during thin-walled injection molding process
-
Shuang-quan Deng
,
Ji-bin Miao
Published/Copyright:
September 21, 2012
Abstract
In this work, the effect of the initial and secondary temperature differences on the solidification behaviors of high-density polyethylene (HDPE) during the thin-walled injection molding (TWIM) was intensively investigated. Simulated temperature profiles using the enthalpy transformation methodology were compared with an in situ temperature measurement, and reasonable agreement was achieved between calculations and measurements. Two-dimensional wide-angle X-ray diffraction characterization shows that the formation of oriented crystal structures was considerably affected by the thermal gradient within the injection-molded article. The present study can be practically significant to the optimization of the cooling parameters during the TWIM of crystalline polymers as well as to the further study on the relationship among “processing-structure-property” of polymeric materials.
Received: 2012-5-24
Accepted: 2012-8-23
Published Online: 2012-09-21
Published in Print: 2012-10-01
©2012 by Walter de Gruyter Berlin Boston
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Keywords for this article
cooling rate;
high-density polyethylene;
phase change;
solidification;
thermal gradient
Articles in the same Issue
- Masthead
- Masthead
- Review
- Influence of hydrostatic pressure and volumetric strain on the mechanical long term behavior of polymers
- Original Articles
- Dynamic pressure analysis as a tool for determination of sharkskin instability by extrusion of molten polymers
- Young’s modulus and prediction of plastics/elastomer blends
- Comparison of tribological performance of PEEK, UHMWPE, glass fiber reinforced PTFE and PTFE reinforced PEI composite materials under dry and lubricated conditions
- Study on the solidification kinetics of high-density polyethylene during thin-walled injection molding process
- The influence of level of interfacial healing on the weld-line strengths of injection molded parts
- Investigation on Nylon 66 silicate nanocomposites modified under gamma radiation
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