Abstract
SummaryThe work described here is an extension of that described briefly by the author elsewhere. The basic test procedure has remained the same, but the tests have been extended to cover other paint systems. Also, a number of surface treatments have been examined in the hope that the problem of cleaning large metal surfaces before painting could be solved, and some experiments with a proprietary cleaning material are described. However, no method so investigated gives satisfactory results at temperatures of the order of 200°C or above. An interesting recent development with silicone paints is the use of a catalyst promote room-temperature curing. This can only be used in two-pack systems at present, but some of the advantages of this system are discussed. For the first time, the high-temperature-pipe apparatus has been used to examine silicone paints pigmented with certain non-metallic pigments, and the initial results have been more encouraging than expected.
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