Re: Sourcing an Acrylic / Plexiglas / Perspex / PMMA adhesive

jtnospam_at_yahoo.com
Date: 01/17/05 

Date: 17 Jan 2005 09:51:59 -0800

grant wrote:
> I am currently trying to source an acrylic adhesive that fulfils the
> following requirements, and I would appreciate any product
suggestions.
> Thanks
> Grant
>
>
> Requirements:
>
> 1/ Must be structural, very high strength
> 2/ Must be gap filling
> 3/ Must be clear after setting (no colouration, no bubbles released
> from solvent evaporation)
> 4/ Must be unaffected by long term UV or Sunlight
> 5/ Must be permanently submersible in water (fresh and sea water)
> 6/ UV setting adhesives cannot be used due to nature of the join
> 7/ Must not give off extremely noxious vapours on setting
> 8/ Must be distributed in Europe
> 9/ Easily dispensed would be appreciated
>
>
> The product is intended to bond cast, extruded and formed acrylic
> together in a high-pressure, load bearing application. The intention
is
> to anneal the acrylic either before bonding or after. (Annealing and
> setting the adhesive at the same time - I would be interested to know
> some opinions on doing this together)
>
>
> I have currently tested some products, specific polymer adhesives
more
> than general adhesives. I have tested:
>
> IPS Weld-On #16 - seemed to fulfil the requirements except for the
> bubbles released from the solvent. I have tried cooling the
> solvent-based adhesives to 5deg °C before use to limit the bubbles
> formed, but the result was still unsatisfactory.
>
> IPS Weld-On #40/42 - has a yellow colour tinge.
>
> A 'self-mixed' adhesive of Bostik Extrufix with acrylic cuttings
> added to form a paste - seemed to fulfil the requirements except for
> the bubbles released from the solvent.
>
> Bostik Tensol #3 - From the specification it seemed this would fulfil
> the requirements perfectly, however in use it gives of the most
noxious
> vapours.

You need a solvent-free, two component system, try an epoxy. Google for
source, there are many compounders.-Jitney

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