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'Best light source for UV curable epoxy'
2006\04\14@132200 by Gus Salavatore Calabrese

face picon face
As an experiment I obtained a double syringe of UV
curable epoxy.  Supposed to set at 375 nm.
I purchased a UV LED ( 20ma ) and tried it on the epoxy.
No results.  Is this a case of too little flux ?

Regards

Gus

2006\04\14@154215 by Peter van Hoof

face picon face
A topic I know a little about
--- Gus Salavatore Calabrese <spam_OUTgscTakeThisOuTspamomegadogs.com> wrote:

> As an experiment I obtained a double syringe of UV
> curable epoxy.  Supposed to set at 375 nm.
> I purchased a UV LED ( 20ma ) and tried it on the epoxy.
> No results.  Is this a case of too little flux ?
>
> Regards
>
> Gus

Most likely this is way too little energy.
You will have more luck with for example a UV eprom eraser
I also cured UV curable epoxies with a camera flash lamp (lots of
flashes real close) and a disco type strobe light.

One of the thing to watch out for is that the photo-initiator chemical
in some of these is susceptible to oxidation and will stop working
after several hours of exposure to atmosphere.

Peter van Hoof

2006\04\14@162629 by blackcat

face picon face
I did notice that the epoxy hardened in one hour
after mixing.
Gus

On 2006-Apr 14, at 1:42 PM, Peter van Hoof wrote:

A topic I know a little about
--- Gus Salavatore Calabrese <.....gscKILLspamspam@spam@omegadogs.com> wrote:

> As an experiment I obtained a double syringe of UV
> curable epoxy.  Supposed to set at 375 nm.
> I purchased a UV LED ( 20ma ) and tried it on the epoxy.
> No results.  Is this a case of too little flux ?
>
> Regards
>
> Gus

Most likely this is way too little energy.
You will have more luck with for example a UV eprom eraser
I also cured UV curable epoxies with a camera flash lamp (lots of
flashes real close) and a disco type strobe light.

One of the thing to watch out for is that the photo-initiator chemical
in some of these is susceptible to oxidation and will stop working
after several hours of exposure to atmosphere.

Peter van Hoof

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