Keywords
Citation
(2001), "Ten-year test proves PPAS71 is the "perfect" coating for harsh environments", Pigment & Resin Technology, Vol. 30 No. 5. https://doi.org/10.1108/prt.2001.12930eaf.002
Publisher
:Emerald Group Publishing Limited
Copyright © 2001, MCB UP Limited
Ten-year test proves PPAS71 is the "perfect" coating for harsh environments
Ten-year test proves PPAS71 is the "perfect" coating for harsh environments
Keywords: Plascoat, Coatings, Thermoplastics
Claims made for the long-term adhesion, UV- and salt-resistance properties of Plascoat's versatile PPA571 thermoplastic construction coating are said to have been upheld in the toughest of ten-year tests in Spain.
Tenth anniversary checks on the supports and tubular structure of the Pasarela Pealonal de Anorga, a 25-metre local authority footbridge over a railway line near the Northern coastal town of San Sebastian is reported to have showen the PPA571 coating to be "still perfect".
That assessment by the managing director of specialist coaters Herkide S.A., Juan-Marie Lacoste, is in stark contrast to the previous performance of a polyamide coating on the same bridge. According to Plascoat, within months it had begun peeling from the tubular sections.
"We turned to PPA571 for a coating that would accommodate the wide temperature range; provide a high level of resistance; meet the requirements of a tightening budget; and offer a life of more than ten years," explains Señor Lacoste. "Ten years on I can confirm that it is still perfect."
The coating – now providing a smooth/glossy protective finish to structures and pipelines around the world – is also said to have also stood up well to vandalism.
Plascoat believes that the Northern Spanish experience supports earlier performance data from sites around the world, including the harsh envirornnent of the Arizona desert. There PPA571 has reportedly overcome a chronic leakage problem on a ferric cure line in the copper leaching operation of the Cyprus Miami Mining Corporation. The pipes and couplings have to contend with the internal corrosive effect of a cure solution containing sulphuric acid and chlorides, as well as external environmental extremes including temperatures in excess of 40°C.
Further details are available from Plascoat Europe BV. Tel: +31 (0)181 458888; or contact Plascoat Systems. Tel: +44 (0)1252 733777.