The infrared emissivity of many adhesives,pigments and their paints with polyurethane adhesives in 8
to 14 滋m waveband were tested. It is found that the Karton resin and aluminium based paint give rise to acceptably low emissivity,and the size and shape of the aluminium have an obvious influence on the emittance of the paint. The indium tin oxide(ITO) thin film has extremely low emissivity,and,the emittance of film is also affected by its thickness and oxygen content.