Rapid Crack Propagation Failures in HDPE Pipes; Structure-Property Investigations [PE]

Material Science RCP # 2006 Washington DC

The influence of molecular architecture on the rapid crack propagation (RCP) resistance of a wide variety of high-density polyethylene (HDPE) pipes was investigated. It was concluded that high molecular weight, high crystallinity and a relatively narrow molecular weight distribution are important architectural attributes for RCP resistance. The ductile-brittle transition temperature, as measured on compression-molded specimens using the razor-notched Charpy impact test, appears to be a reasonably good indicator of the RCP resistance of the resultant pipes. Finally, the uniformity of carbon black dispersion was also found to influence the RCP performance of the pipe.

Please note that the whole article content is available on PPCA website onlySource : 2006 Washington DC


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