Norland 61 solvent

[Lou Boyd]

Does anyone know of a solvent for Norland 61 optical adhesive which has
been cured under UV? It's on glass and anodized aluminum.
--
Lou Boyd
FCSA-GOA-NRA-JPFO
Article II: A well regulated Militia, being necessary to the security of
a free State, the right of the people to keep and bear Arms, shall not
be infringed.

[Brian Lawrence]

Lou Boyd wrote:

Hi Lou,

We have found that acetone works reasonably well and typically is not a
particularly harsh solvent. However, if you really want to remove the cured

material, try methylene chloride. Be careful though, it is a particularly
strong
solvent that will attach just about any other polymers in the system.

Regards,
Brian L. Lawrence, Ph.D.
Molecular OptoElectronics Corp.
www.moec.com

[Robin Hull]

Lou Boyd <bo...@apt2.sao.arizona.edu> wrote in article
<38209DBD...@apt2.sao.arizona.edu>...

> Does anyone know of a solvent for Norland 61 optical adhesive which has
> been cured under UV? It's on glass and anodized aluminum.

I company I used to work for used Methaklone, which I believe is a trade
name for methylene chloride. Simple solvent separation of optical bonds can
be very slow, because of the slow diffusion of solvent into a very thin
bond line. I have known large prisms to survive months of immersion, and
only show limited solvent penetration.

There are a number of methods of thermally shocking, or heating in a vacuum
but these are messy and can destroy the glass component.
--
robin...@gecm.com

The opinions contained in this document are in no way expressed.

[ma...@my-deja.com]

In article <38209DBD...@apt2.sao.arizona.edu>,

Lou Boyd <bo...@apt2.sao.arizona.edu> wrote:
> Does anyone know of a solvent for Norland 61 optical adhesive which
has
> been cured under UV? It's on glass and anodized aluminum.

I have been using the mix that is recomended on Norland's homepage
-methylene chloride, 100 parts by weight
-methanol, 15 parts
-concentrated ammonia (26 Baumé or 29% NH ), 2 parts.

It's not very nice but it works well

Good luck

/ Magnus Arvidsson

Sent via Deja.com http://www.deja.com/
Before you buy.

[Lou Boyd]

ma...@my-deja.com wrote:
>
> In article <38209DBD...@apt2.sao.arizona.edu>,
> Lou Boyd <bo...@apt2.sao.arizona.edu> wrote:
> > Does anyone know of a solvent for Norland 61 optical adhesive which
> has
> > been cured under UV? It's on glass and anodized aluminum.
>
> I have been using the mix that is recomended on Norland's homepage
> -methylene chloride, 100 parts by weight
> -methanol, 15 parts
> -concentrated ammonia (26 Baumé or 29% NH ), 2 parts.
>
> It's not very nice but it works well

Whew...

I think I'll just throw the parts away and start over. :-(
--
Lou Boyd
Fairborn Observatory

[Elliot Burke]

If the parts aren't too big, then you might be able to get away with using
heat. I toss cemented parts into a cup of water, pop it in the microwave,
and let it cook to a boil. This won't melt the adhesive, but it will soften
enough so it will come apart fairly easily. Much better than using
Methylene Chloride, if my lungs have to bear witness.

Elliot Burke
HighTide Instruments

Lou Boyd <bo...@apt2.sao.arizona.edu> wrote in message
news:38209DBD...@apt2.sao.arizona.edu...

> Does anyone know of a solvent for Norland 61 optical adhesive which has
> been cured under UV? It's on glass and anodized aluminum.