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Optimizing the Resistance of Polyethylene to Slow Crack Growth [PE]


Lustiger, Markham

# 1985 York

In developing optimum polyethylene resins for gas distribution piping, it is important to maximize resistance to slow crack growth (SCG) which is the most common mode of material-related field failure in this application. It is proposed that SCG resistance is related to both tie molecule concentration and the effectiveness of tie molecule entanglements. Differences in SCG resistance of four lots of TR418 piping materials are explained on this basis. 

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