随着石油化工工业的发展,用塑料代替金属和木材越来越普遍。在建筑上,也逐步用作装修材料、结构材料。应用范围逐步扩大,品种逐步增多。在建筑中用塑料代替木材,代替金属方面大有可为:如用塑料地板代替木地板,每铺设一平米的塑料地板就可节省木材0.025米~3,若以年产20万平米塑料地板计,一年 With the development of the petrochemical industry, it is becoming more common to use plastics instead of metals and wood. In architecture, it is also gradually used as decoration materials and structural materials. The scope of application has gradually expanded and the variety has gradually increased. The use of plastic instead of wood in construction replaces metal. There are plenty of promises: If plastic floors are used instead of wood floors, each floor of a square meter of plastic can save 0.025 to 3 meters of wood. If a year of 200,000 square meters of plastic flooring is used, one year