Reflective film with high reflective brightness and preparation method thereof

Abstract

The invention discloses a reflective film with high reflective brightness and a preparation method thereof.The reflective film comprises a bead planting layer, a plurality of glass beads are embedded in the bead planting layer, a reflecting layer is fixedly arranged at the top of the bead planting layer and covers the tops of the glass beads, and a honeycomb-shaped reflective film is fixedly arranged at the top of the reflecting layer; pressure-sensitive resin is fixedly arranged in the top of the honeycomb-shaped reflective film. Carbon nanotubes are adopted to modify a glass bead reflective element in an existing reflective film, that is, glass beads with silicon oxide, aluminum oxide, titanium oxide and the like as main components are modified through an amino silane coupling agent, so that the anti-wear strength of the glass beads in collision and friction can be effectively improved; the oxidized carbon nanotubes have excellent visible fluorescence, and the retroreflection of the oxidized carbon nanotubes and the glass beads can synergistically enhance the visual performance of the reflective film, so that the safety of night driving is improved. The preparation method is simple and easy to operate, and the obtained reflective film has the advantages of high light reflection and good quality.

Description

technical field [0001] The invention belongs to the technical field of reflective films, and in particular relates to a reflective film with high reflective brightness and a preparation method thereof. Background technique [0002] Reflective film with high reflective brightness is widely used in road, aerospace, navigation, mining and other fields due to its strong retroreflective performance. At present, the most popular application in transportation is the high-strength reflective film with high refractive index glass beads as the reflective element. High-refractive index glass beads are based on the principle of optical refraction and reflection. The reflected light basically returns in the opposite direction of the incident light, so that drivers can see the signs clearly and improve the safety of driving at night. [0003] In the prior art, glass microspheres are planted on the original polymer film through a bead planting process. However, during the bead planting p...

AI Technical Summary

Problems solved by technology

However, during the bead planting process, the glass beads are prone to rollover, collision, and friction, which make the glass beads wear and break

Moreover, the rubbed glass beads are prone to generate static electricity, resulting in the phenomenon of beads, stacked beads, and floating beads during the bead planting process, which affects the characteristics of the reflective film

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