EPiC database - Polyvinyl chloride (PVC) film

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. Polyvinyl chloride (PVC) is a plastic polymer characterised by good thermal and electrical insulation properties. PVC can be rigid (see uPVC) or soft. PVC is the third most produced plastic, globally. PVC is produced by polymerising vinyl chloride monomers, mostly through suspension polymerisation, followed by emulsion and bulk polymerisation. This generates heat and requires cooling and water. The resulting sludge is filtered, centrifuged, and dried, before being converted to pellets. These can be molten for moulding or extrusion. Multiple additives can be added to PVC to enhance its properties, most importantly phthalate to soften the PVC. PVC film is used in construction for flooring and electrical cable insulation.

本材料隶属于免费的建筑环境性能（Environmental Performance in Construction, EPiC）数据库。该EPiC数据库采用全面的混合生命周期清单方法，收录了250余种建筑材料的隐含环境流系数。聚氯乙烯（Polyvinyl chloride, PVC）是一种具备优异热绝缘与电绝缘性能的塑料聚合物，可分为硬质（详见未增塑聚氯乙烯，uPVC）与软质两类，同时也是全球产量排名第三的塑料品类。聚氯乙烯通过氯乙烯单体聚合制备而成，主流工艺为悬浮聚合，其次为乳液聚合与本体聚合；该聚合过程会释放大量热量，因此需要配套冷却系统与水资源。反应生成的淤浆需经过过滤、离心与干燥处理后，方可加工为粒料，这些粒料可经熔融后用于注塑或挤出成型。可通过添加多种助剂改善聚氯乙烯的性能，其中最为关键的是邻苯二甲酸酯，用于实现软质化改性。聚氯乙烯薄膜常应用于建筑领域，用作地板铺设材料与电缆绝缘层。