Life predictions of elastomers in drinking water distribution systems

摘要

Elastomeric materials are commonly used in water distribution systems. However, when these materials are exposed to chloramines, rapid degradation has been observed. Consequently, it is important to consider how these materials degrade (swelling, strength, elongation) when selecting the appropriate materials to use in water systems. The purpose of this study was to assess degradation characteristics and develop life prediction models for elastomeric materials exposed to chloramines. Based on the testing, it is clear that elastomer materials have unique reactions to chloramine-induced degradation. It is therefore necessary to match the necessary elastomer performance (elongation, swelling, strength) characteristics with considerations regarding long-term degradation. By matching the degradation trends with intended use, elas-tomeric-based failures can be reduced in the future.