TPU UV-Chromic Purple Masterbatch is a special TPU coloring material combining visual interest and functionality. It is produced via an integrated process of low-temperature microcapsule coating and twin-screw extrusion, using modified flexible TPU as the carrier, combined with photochromic microcapsules and anti-aging dispersing additives. Its core highlight lies in the intelligent responsive color-changing property to ultraviolet light: in UV-free environments, it shows a transparent light purple hue; once exposed to natural light or UV radiation, it quickly switches to a rich deep purple or blue-purple, with a color-changing response time of ≤3 seconds. The color switch is reversible, and it can still maintain stable performance after 5,000 times of repeated color changes. Meanwhile, the masterbatch has excellent compatibility with TPU substrates, without affecting the substrate's elasticity, wear resistance and anti-yellowing performance. No additional process parameter adjustments are needed during processing, and it is compatible with common TPU molding methods such as injection molding and calendering. Its application scenarios focus on trendy consumption and functional identification fields, such as TPU color-changing schoolbag pendants for teenagers, TPU photochromic bracelets for outdoor products, and TPU protective films that require UV warning functions, adding attractiveness and practical value to products with dynamic colors.
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