Spectral emissivity properties of reflective coatings
نویسندگان
چکیده
منابع مشابه
Emissivity measurements of reflective surfaces at near-millimeter wavelengths.
We have developed an instrument for directly measuring the emissivity of reflective surfaces at near-millimeter wavelengths. The thermal emission of a test sample is compared with that of a reference surface, allowing the emissivity of the sample to be determined without heating. The emissivity of the reference surface is determined by one's heating the reference surface and measuring the incre...
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Semi-opaque to opaque films containing small amounts of various aluminium particles to decrease emissivity were easily prepared and coated onto low-density polyethylene (LDPE) sheets. The thermal-radiative properties (reflectivity, transmissivity and absorptivity) of the films were measured and related to the aluminum particles' content, size and nature. Time-to-ignition of samples was assessed...
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High reflective materials in the microwave region play a very important role in the realization of antenna reflectors for a broad range of applications, including radiometry. These reflectors have a characteristic emissivity which needs to be characterized accurately in order to perform a correct radiometric calibration of the instrument. Such a characterization can be performed by using open r...
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ژورنال
عنوان ژورنال: Slovak Journal of Civil Engineering
سال: 2012
ISSN: 1210-3896,1338-3973
DOI: 10.2478/v10189-012-0007-6