PVC

material

Polyvinyl Chloride (PVC) is a thermoplastic polymer made from vinyl chloride monomers, available in rigid and flexible formulations depending on plasticizer content.

In Simple Terms

PVC is one of the most widely used plastics, known for its versatility and durability. It comes in two main types: rigid PVC for pipes and construction materials, and flexible PVC for cables and medical devices. The flexibility depends on how much plasticizer is added during processing.

Why It Matters

PVC represents a significant portion of global plastic consumption and resin trading volumes. Its broad application range from construction to healthcare makes it a key material for traders to understand, especially given varying regulatory requirements across different end-use markets.

Technical Details

PVC exhibits excellent chemical resistance and flame retardancy due to its chlorine content (approximately 57% by weight). K-value typically ranges from 55-80 for different grades. Processing temperatures are generally 160-200°C, requiring careful temperature control to prevent degradation. Density ranges from 1.35-1.45 g/cm³ for rigid grades.

Real-World Examples

Rigid PVC pipe resin trading

A resin trader sources K67-rated PVC compound for municipal water pipe applications, ensuring compliance with NSF standards and verifying K-value through certificates of analysis.

Flexible PVC compound specification

Medical device manufacturer requires plasticized PVC with Shore A hardness of 80-85 and USP Class VI compliance, requiring careful selection of phthalate-free plasticizers.

PVC quality control testing

Processing facility conducts K-value determination and thermal stability tests on incoming PVC resin lots to ensure consistent performance in profile extrusion operations.