Where to get shielding paint cheap?

[Hopkins]

Water ionizes (chemically, not physically) pretty well to become conductive, though that should have no effect after drying.

I am thinking the solvent based acrylic is encapsulating and segregating the individual conductive particles, my theory is that the water based product doesn't insulate as well.

 

[sissy kathy]

I am thinking the solvent based acrylic is encapsulating and segregating the individual conductive particles, my theory is that the water based product doesn't insulate as well.

You may have something there, to be a little pedantic, H2O doesn't ionize very well at all, it is actually the impurities in the water that provide for good conductivity.

 

[Hopkins]

You may have something there, to be a little pedantic, H2O doesn't ionize very well at all, it is actually the impurities in the water that provide for good conductivity.

Yes, that is absolutely correct. The DI water we use at work is used to cool 50,000 watt induction coils. It is not conductive at all

 

[Bruce Johnson]

I don't think that the MG Super Shield Nickel is water-based. From spraying and smelling it, it seems like clear Krylon with nickel powder added.

I'm not so sure that water-based would be better than oil-solvent-based paints. I think the conductivity is in the quantity/percentage of metal that's mixed in.

I wonder if my proposed copper powder into water-based Varathane mix will end up turning the copper green?

 

[sissy kathy]

I don't think that the MG Super Shield Nickel is water-based. From spraying and smelling it, it seems like clear Krylon with nickel powder added.

I'm not so sure that water-based would be better than oil-solvent-based paints. I think the conductivity is in the quantity/percentage of metal that's mixed in.

I wonder if my proposed copper powder into water-based Varathane mix will end up turning the copper green?

I doubt it, copper turns as a result of oxidation. I'm not aware of it turning green from other interactions.

 

[Hopkins]

Well, the water based magnetic paint is also a no go, which is confusing to me because this stuff has a very high iron content.

 

[sissy kathy]

Well, the water based magnetic paint is also a no go, which is confusing to me because this stuff has a very high iron content.

You made me do some research. It looks like iron silicate is non conductive, it's used as an abrasive to blast stuff off other stuff.

 

[Hopkins]

You made me do some research. It looks like iron silicate is non conductive, it's used as an abrasive to blast stuff off other stuff.

How can it be ferrous without being conductive?

 

[sissy kathy]

Ah, glad you asked that I was about to post:
Fayalite - Wikipedia, the free encyclopedia

The blue is iron atoms as you can see they are well separated. The pink is silica, which we know is non conductive.

 

[Hopkins]

Ah, glad you asked that I was about to post:
Fayalite - Wikipedia, the free encyclopedia

The blue is iron atoms as you can see they are well separated. The pink is silica, which we know is non conductive.

That is odd to say the least. It seems it would be much easier to just use iron powder in the paint. But what do I know