Incorporation of indolinospirooxazine on ethylene‐vinyl acetate copolymer to produce a intelligently temperature‐regulated nonwhite cool material

Cool materials that adjust cooling efficiency according to sunlight intensity are needed because people have different needs for cooling at different times. Several colors of commercial microencapsulated photochromic powder were melt blended with ethylene‐vinyl acetate copolymer in a two‐roll mill at 90 °C to prepare the photochromic films of corresponding colors. Pink photochromic films [the organic photochromic compound is indolinospirooxazine...