I did some reading on formulating UV curable resin and it will need monomers (sometimes a mix of monomers) and photoinitiator. For curing to be successful, photoinitiator absorption spectrum has to be the same wavelength as the radiation source. How do I find information on the photoinitiator absorption spectrum? Also, how do I select a suitable monomers?
Lastly, if I wish to add particles in the resin. It was said that the refractive index of the resin and particles have to similar to the resin to prevent scattering. Essentially, the suspension has to be invisible to the radiation. How do I measure/determine the refractive index?
The absorption spectrum is normally given in the technical data sheet of the manufacturer. If you are looking for values of certain products I can probably provide them.
At which wavelength do you work? Normally (meth)acrylates will work. Or in case you want to polymerize cationically, use epoxies.
First you have to know the spectrum of the lamp or LED unit, ( especially for LED lamp who possesses only a quite narrow emitting band)
Then go on the technical info on the phtoinitiator and match the PI with the lamp
PY
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