EPiC database - Low-density polyethylene (LDPE) pipe

This material is part of the free Environmental Performance in Construction (EPiC) Database. The EPiC Database contains embodied environmental flow coefficients for 250+ construction materials using a comprehensive hybrid life cycle inventory approach.Polyethylene (PE) is the most common plastic and is a thermoplastic polymer. It has low strength and rigidity buy high impact strength and ductility and low friction. It is highly waterproof.PE is produced by polymerising ethylene monomers using different catalysts (typically metal chlorides or metal oxides). Different densities can be obtained with different properties. Multiple additives are also used to obtain different grades and properties of PE. PE is thermoformed into moulds or extruded.Low-density polyethylene (LDPE) is generally cheaper than HDPE. LDPE pipes are usually used for lower pressure systems and are typically smaller than HDPE pipes.

本资料构成开放获取的建筑环境绩效（EPiC）数据库的一部分。该EPiC数据库采用全面混合生命周期清单方法，收集了250多种建筑材料的本体环境流动系数。聚乙烯（PE）是最常见的塑料，属于热塑性聚合物。其具有低强度和刚性，却拥有优异的冲击强度和延展性，以及较低的摩擦系数。聚乙烯具有极高的防水性能。通过使用不同的催化剂（通常为金属氯化物或金属氧化物）聚合乙烯单体来生产聚乙烯。通过改变不同的密度，可以获得不同性能的聚乙烯。为获得不同等级和性能的聚乙烯，还会使用多种添加剂。聚乙烯可通过热成型模具或挤出成型。低密度聚乙烯（LDPE）通常比高密度聚乙烯（HDPE）便宜。LDPE管道通常用于低压系统，且尺寸通常小于HDPE管道。