> Good afternoon all > > It is not only fluoro colours that tend to fade but most reds as well. > > A few years ago Schleicher sent me four large sandwich fibreglass panels for > weather and colour stability testing. > All panels came with a normal gelcoat primer (without PU top coat) and they > were all finished with four different > brands of paint. Each panel was subdivided for several different shades of > red and orange. > > I was asked to put these panels on the roof of my house facing North. They > were never cleaned or otherwise treated > and after two years I took them back to Germany for evaluation. There was a > remarkable difference in the way the > different paints from different manufacturers had faded. > > Kind regards to all > > Bernard > > >> On 16 Mar 2017, at 12:31 pm, DMcD <[email protected]> wrote: >> >> Regarding the fading of the red Oratex…… >> >> Back a few years ago, a major supplier of paraglider Nylon brought out >> a fluoro range… paraglider pilots love(d) that sort of thing… but they >> found that some colours were very badly affected by UV compared with >> others and some of these fluoro colours were degrading within a >> season. >> >> Paragliders are more critical because the fabric is so lightweight but >> back in the litigious 80s, a pair of US airline pilots parked a >> Quicksilver (?) in the open for some time and were killed when the >> fabric tore. The fabric supplier was successfully sued by their widows >> on the basis that airline pilots are not expected to know about UV >> degradation. >> >> I have also heard from fabric suppliers, that white is to be avoided >> compared with darker colours because the white requires more bleaching >> from the base greige cloth and that makes the fibres weaker. >> >> Water absorption makes many fabrics weaker too. And you get mould >> wicking into the fibres over time, especially in humid climates. All >> this means that the best idea is to put a full range of samples on >> your hangar roof and forget about them for 15 years while you sit >> inside and worry. >> >> Interesting topic though. >> >> D >> _______________________________________________ >> Aus-soaring mailing list >> [email protected] >> http://lists.base64.com.au/listinfo/aus-soaring >
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