[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.12925/jkocs.2015.32.2.320

Flow Marks of Polypropylene (PP) Composites in the Injection Molding

Jeong, Hyeon-Taek (Department of Chemical Engineering, Daejin University)
Kim, Yong-Ryeol (Department of Chemical Engineering, Daejin University)

Publication Information

Journal of the Korean Applied Science and Technology / v.32, no.2, 2015 , pp. 320-325 More about this Journal

Abstract

Flow mark is a sort of surface defect on the composite that can arise during the filling stage of the injection molding process. The purpose of this study is to clarify a mechanism of the flow mark which appears on the surface of injection molded Polypropylene (PP) through the characterization of the surface structure. The materials used in this report are PP/rubber and PP/talc compounding, which are widely used in automobile part. The flow mark shows two different constitutions, such as a luster part and a cloud part on the surface of the injection molded PP. We have investigated the surface structure of PP/rubber and PP/talc composites by using scanning electron microscope (SEM), energy dispersive x-ray spectroscopy (EDAX) and optical microscopy (OM). As a result, the cloud part contains higher contents of the rubber and talc compare to the luster part.

Keywords

Flow mark; injection molding; Polypropylene (PP); cloud part; luster part;

Citations & Related Records

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