Preparation and solar reflectance spectra of chameleon-type building coatings?

In this paper, the preparation of chameleon-type building coatings was inve stigated. The reversible thermochromic properties of the chameleon-type bui lding coatings at normal temperatures were measured, and their solar reflec tance spectra were measured. The results showed that the colors of the cham eleon-type building coatings could be changed reversibly between red, viole t etc. below 18 degreesC and white above 18 degreesC. The solar reflectance spectra of the coatings showed that they could absorb more solar energy be low 18 degreesC than above 18 degreesC, which indicated that the coatings h ad transformed between light-absorbing and light-reflecting at normal tempe ratures. The characteristics of the coatings could be used to create a ther mally comfortable building environment. (C) 2001 Elsevier Science Ltd. All rights reserved.