聚氯乙烯(PVC)是通用聚合物，在全世界聚合物消耗量中僅次于聚乙烯居第二位。然而，目前廢PVC的回收利用不如PE或PET廣泛，這主要是因為PVC通常用于長期使用的場合，不像其他塑料商品使用完一次后進入市政固體垃圾中。 Polyvinyl chloride (PVC) is a common polymer, second only to polyethylene in polymer consumption worldwide. However, at present is better than the recycling of waste PVC or PE PET is widespread, mainly because the PVC is typically used for long-term use, unlike other after using a plastic goods into municipal solid waste. 大多數PVC長期使用的場合，為管道、窗框、房屋墻板、電線和電纜絕緣層及地板材料。因此，PVC屬非市政固體垃圾，實際上中長期使用的產品占PVC總產量的85％。在許多地方，可回收的PVC收集量不足，并且常常是跟多種其他塑料混合在一起，這給其分離回收利用也帶來了一定的困難。 Most PVC USES for long periods of time, for piping, window frames, building walls, wires and cable insulation and floor materials. As a result, PVC is a non-municipal solid waste, and in fact, over the medium and long term products account for 85% of PVC production. In many places, recycled PVC collection quantity is not enough, and are often mixed with a variety of other plastic together, this to its separation recycling also brings certain difficulties. 電線電纜的絕緣層是軟PVC的主要應用領域。西歐生產的PVC約9％，美國產量的4％用于電纜。隨著垃圾掩埋物中有毒材料的滲出相關法規的出臺，由于電線電纜粉末中含有鉛和鎘等添加劑，因此被認為是有毒的廢物，為此廢電纜絕緣層的掩埋和焚燒都被嚴格限制。由于上述限制，電纜的封閉回收是首選方案。 The insulation layer of wire cables is the main application area of soft PVC. Western Europe produces about 9% of PVC, and 4% of U.S. production is used for cables. As landfill in regulations of toxic material to leak out, because the wire and cable powder containing additives such as lead and cadmium, therefore is considered toxic waste, waste cable insulation layer for this landfill and incineration are strictly limited. Due to the above restrictions, the sealing recovery of cables is the preferred option. 電線電纜絕緣層 Electrical cable insulation layer 塑料絕緣粉末可直接模壓成有用的制品，由于它的混合性，因此只適用于性能要求不高(非技術性)場合。這些粉末是塑料絕緣材料的混合物，如PE、交聯PE、PVC、交聯PVC、各種橡膠和含氟聚合物及銅粉。這些雜質降低了再模壓產品的拉伸強度和伸長率。 Plastic insulation powder can be moulded directly into useful products, because of its mixed properties, it is only applied to performance requirements not high (non-technical) occasions. The powder is a mixture of plastic insulation, such as PE, crosslinked PE, PVC, crosslinked PVC, various rubber and fluoropolymer and copper powder. These impurities reduce the tensile strength and elongation of the remoulded products. 性 能 Sex can 經過干燥分離的回收PVC The recycled PVC is separated by drying 未經干燥分離的回收PVC Recycled PVC without drying PE/％ PE / % 0.5 0.5 5 5 拉伸強度/MPa The tensile strength/MPa 20.0 20.0 17.8 17.8 伸長率/％ Elongation / % 288 288 204 204 脆化溫度/℃ The embrittlement temperature / ℃ -16 - 16 -13 - 13 撕裂強度/(kN/m) Tear strength/(kN/m) 96.36 96.36 91.99 91.99 由PVC電纜廢料制備的PVC擠出制品的性能 Performance of PVC extruded products made from PVC cable wastes 電纜絕緣層的清潔和回收過程由5個主要步驟組成： The cleaning and recovery process of the cable insulation layer consists of five main steps: 切斷(分開金屬和塑料)； Cutting (separating metals and plastics); 粗篩； Coarse sieve; 高速洗滌； High-speed washing; 密度分離(采用3種密度溶液)； Density separation (using three density solutions); 漂洗。 Rinse. 這個過程的特點是為了使回收PVC無污染，采用高速洗滌3種密度溶液的密度分選及熔融過濾和干燥；熔融過濾以達到無雜質。 The characteristics of this process are to make the PVC free, the density separation and the melting and drying of the three density solutions of high speed washing. Melt filtration to achieve impurities.