Dear reader,
I am looking for an adhesive with the following properties: adequate for bonding glass to plastics light-curable at > 400 nm curing time < 20 sec transparent or only sligtly colored visc. 100-10000 cps (mPas) max. Shore A 80 temperature 20 - 95 °C water absorption < 1 % environment: liquid, pH 5 - 9
tack free surface a plus bond line will be < 0.1 mm no shadowed parts
Any specific product or company in mind?
Thanx
Dear Martin:
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You cannot have it both ways. If it is light cured (before cure), it cannot be transparent to interact with light. Maybe there will be an infrared-activated transparent adhesive...
Superglue is clear...
David A. Smith
Masterbond UV-15X-2 is worth a look
I have had good results with Loctite 352 structural UV adhesive. It requires a real UV source to cure, though. It doesn't perform very well with an ordinary "blacklight". Direct sunlight works fairly well, but is slow (depending on film thickness).
Don
transparent doesn´t necessarily mean 100 % transmittance = no absorption
Dear Martin:
But it does mean something like 99% of all visible wavelengths, so 1% would still be inadequate unless the light intensity was high. So far the only "hits" have been UV cure, which is a completely different wavelength.
David A. Smith
It can be if it's UV cured, some years ago I worked with UV cured adhesives to laminate layered eyeglass lenses. Crystal clear, but of course 100% UV blocking... which is what you want in glasses anyway. Check out Dymax, which is IIRC where we got it from.
-Dana
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UV is not >400nm, the requirement of the problem. So its IR cure, or its not transparent until it *is*cured (which might suffice).
David A. Smith
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