Mutual protection against UV aging of EVA composites using highly active optical conversion additives

The mutual ultraviolet (UV) degradation protection and optical conversion mechanism of ethylene-vinyl acetate copolymer (EVA) rare earth organic complex (REOC) composite were investigated. The uniform Sm(TTA)₃Phen (MSTP) particles were successfully synthesized via microwave ultrasonic technique, and were uniformly embedded into the EVA long chain cross-linked structure with excellent dispersion. The MSTP doped EVA film provides an excellent active optical conversion and highly visible transmission performance, the properties of which are strongly dependent on the size and concentration of the doped particle, and its absorption and emission properties. MSTP was effective as a UV light resistant agent and was a highly active optical conversion additive for EVA rare earth organic complex composites with perfect network structure and excellent adhesion properties, which through the destruction of the structure can transform the heat energy into the form of light energy release via hydrogen bonding.