Accession Number : ADA118912

Title :   A Low Cost, Simple, Portable Instrument for the Measurement of Infra-Red Reflectance of Paints,

Corporate Author : MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)

Personal Author(s) : Marson,F

PDF Url : ADA118912

Report Date : May 1982

Pagination or Media Count : 26

Abstract : The construction and design of a low cost, simple, portable infra-red reflectometer which can be used to estimate the reflectance of paint films in the 800 nm region is described. The infra-red reflectances of a range of lustreless, semigloss and gloss olive drab camouflage paints determined using this instrument are compared to those obtained using modified commercial equipment and to the reflectances measured at 800 nm using a Cary model 17 spectrophotometer. The new reflectometer was shown to be superior to the modified commercial instrument currently specified in Australian government paint specifications and to be capable of estimating the reflectance of olive drab paints to within about one per cent of the Cary derived reflectance values. The reflectance values for a range of 24 experimental coatings made with pigments of varying absorption in the infra-red region are used to illustrate the effect of the instrument's spectral response and the necessity of establishing a reliable working standard. (Author)

Descriptors :   *Reflectometers, *Paints, *Infrared radiation, *Reflectance, Portable equipment, Low costs, Comparison, Commercial equipment, Australia

Subject Categories : Coatings, Colorants and Finishes
      Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE