Polyvinyl Chloride (PVC) is a thermoplastic polymer formed by the polymerization of vinyl chloride monomers. It is the third-largest synthetic plastic in global production. It comes in two forms: rigid and flexible. Rigid PVC is commonly used in building materials such as pipes and window profiles due to its corrosion resistance, Goda isoleringsegenskaper och låg kostnad; Flexibel PVC tillverkas genom att tillsätta mjukgörare och används i trådisoleringsskikt, medicinskt slang, konstgjorda läder osv. .
The advantages of PVC lie in its strong chemical stability, good flame retardancy, and ease of processing. However, traditional PVC production may involve toxic additives (such as phthalates), so environmentally friendly lead-free stabilizers and recycling technologies (such as physical recycling and chemical depolymerization) are becoming industry trends. It is worth noting that PVC-avfall kan professionellt behandlas till återvunna partiklar, som kan återanvändas i scenarier med låg efterfrågan, vilket främjar utvecklingen av den cirkulära ekonomin .