What you are looking for is either a deflocculant or emulsifier to
suspend the 80 mesh glass frit in water or some other "vehicle" which
will allow the enamel to be passed through a syringe.
Deflocculent is a pottery term. Emulsifier is usually used with food.
They both do the same thing, to keep particles suspended in a
liquid, this is called an emulsion. There are several choices but they
all have draw backs. Great examples of emulsions are milk and butter.
Here is a good starting point......Something to get your feet wet.
Bentonite clay is used in pottery glazes to keep glaze formulas in
solution. It is referred to as a deflocculent because it keeps the
components of a glaze (glass, flux, and colorants, metal oxides) in
suspension. However bentonite will probably make your enamel opaque.
Also if you use too much bentonite it could cause your enamel to
crack or craze.
A great emulsifier is lecithin. I am not sure it it is strong enough
to bind 80 mesh enamel frit.
The problem with using an organic emulsifier is that when it burns
off it may leave carbon behind which will darken your glaze.
A great organic emulsifier would be corn starch, but I am not sure
it can carry 80 mesh glass frit.
80 mesh is almost 0.2mm so while this is huge for a particle, it
still quite small....
There are a lot of things to consider......
If the enamel is going to be opaque, go with bentonite.
If the enamel is going to be transparent then you will need to find
something that completely burns off before the glass gets to its
I hope this helps you find the solution you are looking for.