Vanadium dioxide/polymer composites: thermochromic behaviour and modelling of optical transmittance
1994; Elsevier BV; Volume: 33; Issue: 2 Linguagem: Inglês
10.1016/0927-0248(94)90202-x
ISSN1879-3398
AutoresJean‐Christophe Valmalette, J.R. Gavarri,
Tópico(s)Photoacoustic and Ultrasonic Imaging
ResumoPigments of vanadium dioxide VO2 were inserted in a polymeric coating to analyse the optical thermochromic behaviour linked with the semiconductor-metal first-order transition at 341 K. Pyranometric equipment was adapted to study the variations of artificial solar radiation as a function of temperature, volume fractions, and grain size. The optical transition of VO2 pigments was observed and a Beer-Lambert model is proposed to interpret the amplitude of flux variations. The thermochromic behaviour of the composite coatings can be optimized.
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