Re: Help with an applied optics problem

[Brian Whatcott <betwys@SBCGLOBAL.NET>]

> Leigh Palmer wrote:
>
> >
> > Does anyone know of a colorless, transparent resin that is a
> > good match to the index of refraction of a nebbish glass (I don't
> > have a good number - say 1.55)? I would like to apply it wet
> > (the less viscous the better) and have it set up hard, but soft
> > enough to be smoothed with a razor blade.
> >
> > I know that mineral oil is a fair match, but mineral oil doesn't
> > set, and my friends prefer to watch TV with the screen vertical.
> >
> > I am aware of the windshield patching technique widely
> > advertised on TV. Does anyone know what resin is used in
> > that process? /snip/
> > Thanks,
> >
> > Leigh Palmer
> > Professor Emeritus
> > Department of Physics
> > Simon Fraser University



Several resin systems are apparently in use:
 unsaturated polyester/styrene (UPES),
unsaturated polyester/acrylate oligomer,
epoxy acrylate,
urethane acrylate,
with a range of UV curing agents and UV barriers.

Brian