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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Effect of chlorine on polyethylene pipes in water distribution networks
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Effect of chlorine on polyethylene pipes in water distribution networks

机译：氯对自来水管网中聚乙烯管道的影响

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摘要

With the increasing worry over water supplies, there is much interest worldwide in measures to be taken to retain the integrity of water distribution networks. This paper reports on a study of the integrity of polyethylene water distribution pipes related to the effect of chlorine in the water. Pipes used in water distribution networks are subject to demanding environmental, functional, and other stresses. Their working lifespan depends much on retention by the material of its antioxidant. In dry air, polyethylene can retain its properties for many decades. However, when polyethylene pipes are used in water distribution networks, the diffusion and loss of antioxidant from the material is increased from the inner pipe surface. When chlorine is present in the water, it can enter and spread through the material to increase the depletion rate of the antioxidant population. In this research, samples of pipe materials and sections of manufactured pipes have been subjected to accelerated life assessments. Also, modelling techniques have been devised to simulate the depletion of antioxidants in the pipe materials and used to research different possibilities including varying the concentrations of aggressive agents.
机译：随着对供水的担忧日益增加，世界范围内对于保持水分配网络的完整性所采取的措施有很大的兴趣。本文报道了与水中氯的影响有关的聚乙烯给水管完整性的研究。给水管网中使用的管道承受着苛刻的环境，功能和其他压力。它们的使用寿命很大程度上取决于其抗氧化剂的保留能力。在干燥的空气中，聚乙烯可以保留其性能数十年。但是，当聚乙烯管用于配水管网时，抗氧化剂从材料中的扩散和损失会从管道内表面开始增加。当水中存在氯时，氯会进入并通过材料扩散，从而增加了抗氧化剂的消耗率。在这项研究中，对管道材料和制成的管道的截面样品进行了加速寿命评估。同样，已经设计出建模技术来模拟管道材料中抗氧化剂的消耗，并用于研究包括改变侵蚀剂浓度在内的各种可能性。

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