优异的耐候性能

In outdoor environments, plastic products incorporating our additive effectively absorb and reflect UV radiation, offering excellent resistance against the degradation of color, gloss, and other properties. This significantly delays aging, discoloration, and performance decline, thereby extending outdoor service life. As demonstrated in the comparative test chart below, PVC outdoor door and window components formulated with our product exhibit even smaller color shifts.

Accelerated weathering simulates outdoor UV exposure for PVC window and door profiles. Three PVC specimens were tested in parallel under ISO 4892-3 — (1) unfilled PVC with no TiO₂ addition as the negative control, (2) PVC with 3% reference rutile TiO₂(616S), and (3) PVC with 3% DW-1070. Without any pigment, PVC undergoes rapid photodegradation: dehydrochlorination produces conjugated polyenes that drive ΔE up to ~25.6 at 168 hr — visibly yellow and surface-damaged. Both TiO₂-stabilized samples stay below ΔE 1.3 over the same window, with DW-1070 tracking at or slightly below the reference (final ΔE 1.18 vs 1.22).

DW-1070（3%，PVC材质） TiO₂(616S) (3%，PVC材质) 无添加（仅限PVC - 对照） · 较低的 ΔE = 更好的保色性

图1 加速紫外老化 · ΔE 颜色随时间变化（ISO 4892-3）