Hydrophobic material to stop frost 3

[HDS]

Is there a material or coating that is hydrophobic enough to prevent the formation of frost on cold objects?

One of the challenges with any cryogenic system is that there are always parts that are cool enough for frost to build up. The thing I am looking for is a foam insulation that would shed water to the point that it does not condense on the surface or freeze. Coatings for glass or metal would also be valuable.

 

[Demon3]

I don't think you need to really shake off the ice. I am thinking of a very slight deflection just to debond the solid-ice interface. If that is done early on before a thick ice layer has built up then loosening the adhesion should be enough and gravity will do the rest. Yes, this is sheer speculation. It works perfectly on paper like many things!

Chris DeArmitt PhD FRSC CChem

http://www.phantomplastics.com

Consultant to the plastics industry

 

[HDS]

sheer speculation of shear

sorry...

 

[unclesyd]

I would checkout the newer line of Anti-Graffiti coatings

Here are two possibilities that you may want to also look at. the Teflon based one from Elastone and the PVDF one from Saf. The Saf site contains a lot of information on PVDF coating systems.

http://www.elstonecompany.com/id59.html

http://www.saf.com/content.php?action=showPage&pid=61&cat_id=11

 

[IRstuff]

Chris,

I think the issue is the word "slight." Most piezo materials can displace a few angstroms for thin layers, and even then, require voltages on the order of 100V.

TTFN

FAQ731-376

 

[Demon3]

Aha, that's news. I have no knowledge about that so thanks for the information.

Chris DeArmitt PhD FRSC CChem

http://www.phantomplastics.com

Consultant to the plastics industry