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|Author(s):||Joannie W. Chin; E Byrd; N Embree; Jonathan W. Martin;|
|Title:||Use of Integrating Spheres as Ultraviolet Radiation Sources for Artificial Weathering of Polymers|
|Published:||April 01, 2002|
|Abstract:||Laboratory ultraviolet (UV) chambers are widely used to obtain weathering data for a wide range of commercial polymer products including coatings, textiles, elastomers, plastics and polymeric composites. Although numerous improvements have been made in the design of UV chambers over the last 80 years, the reproducibility of the exposure results from these chambers have remained elusive. This lack of reproducibility is attributed to systematic errors in their design, operation, and control which prevent direct comparisons of the performance of materials exposed in the same environment, comparisons of the performance of the same material exposed in different laboratories, and the comparison of field and laboratory results. This paper describes an innovative UV chamber design based on integrating sphere technology that greatly reduces the magnitude of these errors, as well as provides additional experimental capabilities.|
|Citation:||Radtech 2002 Technical Conference Proceedings|
|Pages:||pp. 931 - 946|
|Keywords:||Integrating Sphere,Polymers,Ultraviolet Radiation,Weathering|
|Research Areas:||Building and Fire Research|
|PDF version:||Click here to retrieve PDF version of paper (447KB)|