How Is the UV Resistance of GRC for Decorative Panels Ensured? Qinglong Group's Anti-Aging Technology and Long-Term Durability Practice

The UV resistance of GRC for decorative panels must be ensured through a triple technical approach of "material selection, surface treatment, and regular maintenance." Quality products should meet the standard of ΔE≤5.0 and strength loss ≤10% after 3000 hours of QUV accelerated aging. The high weather-resistant GRC panels used by Qinglong Group in the Yingbin No.1 Coastal Project in Sanya, Hainan, incorporated UV absorbers (benzotriazole-based), surface fluorocarbon coatings (dry film thickness ≥30μm), and through-colored matrix processes. After 8 years of use, testing showed a color change of only ΔE 2.3 and a flexural strength retention rate of 92%. The weather-resistance assurance system we established extends the service life of GRC decorative panels in high-UV regions to over 40 years, far exceeding the 20-25 years of ordinary products.

The Material System Is the Foundation of UV Resistance

White cement or light-colored sulphoaluminate cement is selected to reduce pigment degradation; quartz sand (SiO₂≥95%) is used as aggregate for good stability. Qinglong GRC achieves stable panel performance under a cumulative radiation of 1000kLy through optimized mix ratios. In coastal projects, we additionally add UV shielding agents, improving weather resistance by 30%.

Surface Treatment Builds a Protective Barrier

The fluorocarbon coating resists UV for ≥3000 hours with good self-cleaning properties; silane impregnation depth ≥3mm blocks UV penetration. Qinglong Group adopts a multi-layer protection process to ensure the protective layer's service life matches the substrate. Regularly inspect the coating condition and repair promptly.

Maintenance Regime Ensures Long-Term Performance

The protective layer is recoated every 5 years, and surfaces are cleaned every 2 years. Qinglong Group provides weather-resistance testing services to provide early warning of performance degradation. Systematic protection is the secret to keeping GRC decorative panels forever young.