Irradiation Evaluation of Polyurea Spray Elastomers
100% Solids, two-component polyurea spray elastomer systems are being utilized in a wide variety of application areas. In most cases, the systems are exposed to typical environmental conditions with excellent performance. A recent interest has been in coating applications where levels of nuclear radiation may be present.
To evaluate the performance of polyurea spray elastomer systems in this environment, samples were irradiated for various exposures using a Cobalt-60 source. The polyurea sample systems included a black InstaCote™ system, and a standard gray and blue system prepared by Huntsman Corp., Austin Labs. Nuclear irradiation exposure work was done at the Ford Nuclear Reactor, The University of Michigan. Dose rates were measured with a Reuter-Stokes ion chamber, Model RS-C4-1606-207.
The attached Table [in PDF download] gives the elastomer physical property retention of those select systems after varying degrees of exposure to the Cobalt-60 source.
Because of the simplistic nature of this evaluation and applications factors which are beyond the control of Huntsman Corp., no guarantee or warranty concerning the use of these elastomer systems is either intended or implied. These test results are reported to serve as a guide to the applicability of polyurea spray elastomers in a variety of applications. It is the responsibility of the system supplier and/or the end user to assess the suitability of polyurea spray elastomers for specific applications.