PVC-P (Plasticized PVC)
Flexible (plasticized) PVC — PVC compounded with 20–50% plasticizer (typically DEHP, DINP or DOTP) to achieve rubber-like flexibility. Very different properties from rigid PVC-U. Excellent electrical insulation, chemical resistance, flame retardancy (self-extinguishing) and weatherability. Trade names: Vestolit P (Orbia), Geon (Polyone). Used for cable insulation and sheathing, medical tubing, automotive interior trim, inflatable products, floor coverings, hoses and sealing profiles. Continuous use -30°C to +70°C.
Chemical composition comparison (wt%)
Side-by-side: PVC-P (Plasticized PVC) (COMPOSITION) (ISO 1163) vs ASTM
| Element | PVC-P (Plasticized PVC) (COMPOSITION) | ASTM | Overlap |
|---|---|---|---|
| Base Polymer (Polyvinyl Chloride) | 60–90% | — | — |
| Plasticizer (DOP/DINP/DEHP type) | 10–40% | — | — |
Mechanical properties
30% Plasticizer
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 10–25 | MPa |
| Elongation at Break | 200–400 | % |
| Shore Hardness A | 55–90 | Shore A |
General
| Property | Value | Unit |
|---|---|---|
| Density | 1.2–1.4 | g/cm³ |
| Continuous Use Temp | -30–70 | °C |
| Oxygen Index (LOI) | 30–45 | % |
| Water Absorption (24h) | 0.1–0.5 | % |
Related materials
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Ethylene propylene diene monomer rubber — THE outdoor/weather elastomer. Saturated backbone gives outstanding ozone, UV, and weathering resistance. Excellent resistance to steam, hot water, and polar solvents. NOT resistant to oils/fuels (opposite of NBR). Good electrical insulation. ρ 0.85-1.3 (lightest common rubber). Used for automotive door/window seals, roofing membranes, radiator hoses, HVAC gaskets, and pond liners.
Epoxy/Carbon Fiber (CFRP)
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FKM (Fluoroelastomer / Viton)
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