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http://dx.doi.org/10.7473/EC.2011.46.4.335

A Study on the Manufacturing, Mechanical Properties,Abrasion Resistance, and Slow Crack Growth Resistance of the Recycled Polyethylene/Fly Ash Composites  

Kye, Hyoung-San (Department of Material Design Engineering, The Mokwon University)
Shin, Kyung-Chul (Department of Polymer Science & Engineering, The Chungju National University)
Publication Information
Elastomers and Composites / v.46, no.4, 2011 , pp. 335-342 More about this Journal
Abstract
The virgin and recycled polyethylene composites with various ratio of fly ash were manufactured by using a fully intermeshing co-rotating twin screw extruder for the reuse of fly ash from power plant and post-consumed polyethylene. Fly ash were blended with virgin HDPE and recycled polyethylene at the weight fraction of 0 to 40 wt.%. Mechanical properties such as yield strength, abrasion resistance, and slow crack resistance were measured with ISO and ASTM standards. The experimental results for the various composites showed that the elongation at break and the yield stress of the composites decreased with increasing fly ash contents. Generally, the abrasion resistance of PEs decreased with increasing sandpaper grits but the abrasion resistance of the composites increased with fly ash content at finer abrasive surface. The slow crack growth resistance of virgin HDPE, recycled JRPE and the JRPE composite showed higher slow crack growth resistance up to 50% of load at notch depth of 20% and 30%, but KRPE and the KRPE composite showed much lower resistance than virgin HDPE, JRPE and the JRPE composite. Time to break, measured with NCLS test method, of all PEs and the composites satisfies the regulation of Korean Industrial Specification for sewer pipe and support application.
Keywords
HDPE; fly ash; post-consumer recycled Polyethylene; abrasion resistance; slow crack growth resistance; NCLS;
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Times Cited By KSCI : 3  (Citation Analysis)
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