Highly inert liquid polymer?
Highly inert liquid polymer?
(OP)
Hello,
I require a liquid to use as a barrier over some very reactive metal elements to avoid oxidization. I would now like to try polymers. Any suggestions for a highly inert liquid polymer (at room temp)? Halocarbon oil sounds like a start......
I require a liquid to use as a barrier over some very reactive metal elements to avoid oxidization. I would now like to try polymers. Any suggestions for a highly inert liquid polymer (at room temp)? Halocarbon oil sounds like a start......





RE: Highly inert liquid polymer?
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RE: Highly inert liquid polymer?
There is not any memory with less satisfaction than the memory of some temptation we resisted.
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RE: Highly inert liquid polymer?
RE: Highly inert liquid polymer?
RE: Highly inert liquid polymer?
RE: Highly inert liquid polymer?
RE: Highly inert liquid polymer?
Some metals catalyse degradation of organics. Transition metals such as copper, iron, chromium and vanadium are particularly bad. These can be deactivated by addition of complexing agents.
There is not any memory with less satisfaction than the memory of some temptation we resisted.
- James Branch Cabell
RE: Highly inert liquid polymer?
Regards
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RE: Highly inert liquid polymer?
RE: Highly inert liquid polymer?
The metals are copper, tin, iron, nickle, gallium. The trouble element is gallium. A liquid abouve 29 degrees C it forms an instant skin of oxide when exposed to everything I've tried. I've tried silicone, mineral and hydrocarbon oils and some work well for all but gallium.
Like to work my way through some of these advanced oils http://www.vacuumoil.com/vacuumpumpoil.htm
RE: Highly inert liquid polymer?
If that works, you need to find a similar reactive material that will dissolve in your chosen oil.
Regards
eng-tips, by professional engineers for professional engineers
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RE: Highly inert liquid polymer?
There is not any memory with less satisfaction than the memory of some temptation we resisted.
- James Branch Cabell
RE: Highly inert liquid polymer?
You may need to de-aerate whatever grease or oil you are using before pouring it into the tube; try cylcing the oil under alternating vacuum and inert gas (note that nitrogen is not necessarily inert for gallium). Would agree with demon3 you need to look at whatever the tube's seal is made from to limit diffusion of oxygen.
RE: Highly inert liquid polymer?
Tom Jablonowski, TSE Industries, Inc.
www.tse-industries.com
RE: Highly inert liquid polymer?
The container is acetal and sealed with epoxy. The idea of the liquid is so I can work with the metals before placing in the container without them oxidizing. How long do you think I could leave the de-aerated liquid exposed before it becomes significantly oxygenated?
RE: Highly inert liquid polymer?
P.S. here's a place to get some gallium
http://
There is not any memory with less satisfaction than the memory of some temptation we resisted.
- James Branch Cabell