Research on Microstructure and Electrical Resistivity of Injection Molded Metallic Fiber-Filled Polymer Composites

Xing Zhi Sun; Yong Feng Cheng; Hai Hong Wu

doi:10.4028/www.scientific.net/AMR.472-475.748

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 472-475Research on Microstructure and Electrical...

Research on Microstructure and Electrical Resistivity of Injection Molded Metallic Fiber-Filled Polymer Composites

Abstract:

The electrical resistivity of metal fiber-filled polymer composite always increases during injection molding process because the conductive fibers were easily broken down to shorter under the action of high shear stress. In order to decrease electrical resistivity of the molding, we investigated the microstructure at different layers within the molding made from stainless steel fiber-filled polypropylene and measured their resistivities. High resistive zone mediate resistive zone and low resistive zone were found within the molding. The results showed that the high resistivity zone located at the skin area of the molding where average length of filled fibers was less than other zones, and the smallest resistive zone located at the core area where most fibers preserved large ratio of length to diameter and oriented along flowing direction of the melt, and the sub-skin zone is mediate resistive zone.

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Advanced Manufacturing Technology, ICMSE 2012

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Periodical:

Advanced Materials Research (Volumes 472-475)

Pages:

748-752

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.472-475.748

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Online since:

February 2012

Authors:

Xing Zhi Sun, Yong Feng Cheng, Hai Hong Wu

Keywords:

Electrical Resistivity, Injection, Metallic Fiber-Filled Polymer

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