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Materials and Manufacturing Processes Volume 29, 2014 - Issue 2
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Original Articles

Structure–Property Relationship in Injection-Molded Polypropylene/Clay Composite Foams

Ming Jiang School of Materials Science and Engineering, Wuhan Textile University, Wuhan, China
,
Hairong Li School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
,
Dong Fang School of Materials Science and Engineering, Wuhan Textile University, Wuhan, China
,
Lei Liu School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
,
Qile Tai School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
,
Longcheng Li School of Materials Science and Engineering, Wuhan Textile University, Wuhan, China
,
Lijie Dong School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
,
Haian Xie School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
&
Chuanxi Xiong School of Materials Science and Engineering, Wuhan Textile University, Wuhan, China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, ChinaCorrespondence[email protected] [email protected]
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Pages 160-165 | Received 02 Jul 2013, Accepted 31 Oct 2013, Published online: 04 Mar 2014
 
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Abstract

Polypropylene (PP)/organically modified montmorillonite (OMMT) composite foams were fabricated by a two-step injection foaming technique. The structure–mechanical property relationship in the composite foams was investigated. The OMMT favors the tensile and impact properties of the composite foams by optimizing the cell structure and the polymer matrix structure. The microcells in the polymer matrix played a positive part in the toughening of PP/OMMT composite foams, but lowered the reinforcing effect of OMMT as expected from the mixture rule. The enhanced mechanical properties for the composite foams were obtained by incorporating well-dispersed OMMT into PP matrix.

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