Life Performance Testing of Coatings Using a Controlled Temperature Natural Weathering System

In industry there is a critical need for an accurate short-term weathering test which will allow selection of suitable candidate systems for progression to commercial products. Natural weathering is a mild, slow, irreproducible means for predictive testing. While artificial weathering is reproducible; the acute aggressive stresses mitigate against reliably replicating natural conditions.

Based on the findings of the previous [DURA] project, this project aims to develop a versatile outdoor controlled temperature exposure rack through enhanced thermal control and automated water spray. The project will investigate the effect of season, latitude and temperature cycles on the weatherability of a series of coatings. It is predicted that the induction and progress of degradation processes will be accelerated by elevated temperature.

The exposure tests will involve the study of coated panels described by an experimental design. Three exposure temperatures (typically 25, 35 and 45°C). Modern analytical techniques will be used to assess trends in early panel degradation.

The project is partially funded via the DTI's Materials Measurements Studio Initiative. With companies from industry making up the partners and Industrial Advisory Group of the project. The results of the project and input from the Industrial Advisory Group will contribute to the design of a commercial rack system and make the basis of test protocols.

Further Information

Since the project is still in its early stages, additional sponsorship will be welcomed. Interested companies should contact Richard Holman.