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.<br><br>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.<br><br>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.<br><br>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。EPiC数据库采用综合混合式生命周期清单方法，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）是一类兼具优异热绝缘与电绝缘性能的塑料聚合物，可分为硬质（详见uPVC）与软质两类，是全球第三大量产塑料。

PVC通过氯乙烯单体聚合制备，主流工艺为悬浮聚合法，辅以乳液聚合法与本体聚合法。该生产过程会释放热量，需配套冷却与用水设施。反应生成的污泥经过滤、离心、干燥后被加工为粒料，这些粒料可熔融后用于成型或挤出加工。可通过添加多种助剂改善PVC性能，其中最关键的是邻苯二甲酸盐（phthalate）以实现软质化改性。

PVC膜常用于建筑领域的地板铺设与电缆绝缘层制作。