Typical Applications
Rigid Weather-Resistant PVC: Outdoor profiles, window & door frames, outdoor panels, pipe fittings, photovoltaic frames, resin tiles.
Flexible Weather-Resistant PVC: Outdoor cable sheaths, irrigation hoses, outdoor soft components, automotive exterior parts.
Quick Identification (For QC & Customs)
Burning Test: Green flame base, self-extinguishing, pungent HCl odor → PVC confirmed.
Density Test: Sinks in water (1.30–1.45 g/cm³) → distinguishes from PE/PP.
Aging Test: UVB-313 aging 1000h, ΔE≤5, no chalking/cracking → weather-resistant grade.
Weatherability Key Indicators (Outdoor Grade)
Weatherability Item | Rigid PVC | Flexible PVC | Standard |
UV Stabilization | UV absorber + HALS + Rutile TiO₂ | UV absorber + HALS + Rutile TiO₂ | — |
Xenon Arc Aging | QUV/Xenon 3000h, ΔE≤5, Chalking≤1 Grade | QUV/Xenon 1000h, ΔE≤5 | GB/T 16422.3 / ISO 4892-2 |
Tensile Retention After Aging | ≥80% | ≥80% | ISO 527 |
Impact Retention After Aging | ≥75% | ≥70% | ISO 179 |
Heat Aging | 70 °C × 168h, No Cracking | 70 °C × 168h, No Cracking | GB/T 7141 |
Salt Spray Resistance | 500h, No Rust, Blister≤2 Grade | 500h, No Rust, Blister≤2 Grade | GB/T 10125 / ISO 9227 |
