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Artificial laboratory accelerated test instrument

Methodology

Performing accelerated photoaging of polymers with the aim of understanding the aging mechanisms of polymers exposed outdoors and examining the chemical evolution at a molecular level. Using a mercury vapor lamp, the SEPAP MHE is able to replicate and increase the rate of the chemical reactions responsible for the gradual loss in properties of polymers during their lifetime.

Weathering chamber
Weathering chamber

Caracteristics

Mercury vapor lamp (1000 W)
1040 cm² specimen rack capacity
Irradiance range 90 - 300 W/m² (290 nm - 420 nm)
Precise control of irradiance, Black Standard Temperature (BST) and chamber temperature
Chamber temperature range up to 70 °C

Expertise

40 years experience in the domain of photo- and thermo- degradation of polymeric materials. From the molecular scale to the functional properties.

Results

Photochemical degradation mechanisms of most polymeric materials. Correlation mechanisms/degradation of the properties

References

Photostability of organic materials used in polymer solar cells. Rivaton A, Tournebize A, Gaume J, Bussière PO, Gardette JL, Therias S, Polym Int 2013 ; 63 : 1335–1345
A universal route to improving conjugated macromolecule photostability. Santos Silva H., Tournebize A, Bégué D, Peisert H, Chassé T, Gardette J-L, Thérias S, Rivaton A,. Hiorns R C. RSC Advances 2014 4, 54919–54923

Applications

Degradation of active layers in organic solar cells Weathering of encapsulants and back-sheets of solar cells Weathering and degradation of organic components of concentration solar mirrors

Localisation

Partner
ICCF Equipe Photochimie Groupe POPPI

Institution
Université Blaise Pascal - CNRS - SIGMA
Campus des Cézeaux Avenue Blaise Pascal 63 170 Aubière

Contact
Sandrine Therias
33(0)4 73 40 71 43
sandrine.therias@univ-bpclermont.fr

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ref. SEPAP MHE