best thin thermally nonconductive material 1

[rotarypower]

What is the best thermally nonconductive material I can get that is thin?
Need to put it between the intake side of a IC and a airbox I am making
My scenario is that the IC is going to be around 200*F and pressed up against a aluminum airbox.
I wish to use a very thin nonconductive material with properties like asbestos or ceramic matting.
I am just not sure what material would be the best to stop energy from transferring through one aluminum surface to another in direct contact.

Here is a link to some materials I am considering. Anybody care to elaborate on which materials have the most desired properties and that can be found in a thin material, around 1/8 to ¼ inch?

http://thermal_insulation_material....rs.alibaba.com/

Thanks for any help you can supply

 

[25362]

The link you mentioned doesn't respond. Can you verify whether its writing is OK ?
In the meantime consider whether low density (0.05 g/cm³) cork at 100^oC could be a good insulator with a thermal conductivity of 0.04 W/(m.K).

 

[rotarypower]

That may be a good choice, are there any other materials that are just as good but have more durable properties that could withstand the rigors of moisture and engine bay heat and high speed air flowing over it causing it to oscillate and probably fracture apart?

Any comments on perhaps using a silicone based material?
Such as the material that is used in making turbo hose couplers, but in a flat sheet.

Also does anyone have any good links or references I could look up the thermal transfer properties of different materials?

Sorry about the link I should have checked it

http://thermal_insulation_material.manufacturers.alibaba.com/

Thank you for any input

 

[prex]

The suggestion of 25362 was a good one: cork has a good resistance to moisture and, if you can mechanically protect it (between two metal layers?), it would be a perfect choice.
Otherwise you must make another choice: if you want a really good insulating material, then the mechanical properties won't be good: the best insulators are in fabric, textile or even powder form, and that's because that way they entrap air (like cork BTW).
If you want a solid material, then your thermal conductivity will be higher: simply choose the lightest material you can live with (PTFE for example weighs about two times as most elastomers, so it wouldn't be a good choice). If you can accept a kind of foam (more or less dense is up to you, and of course with closed cells), then that will be the good one.

prex

http://www.xcalcs.com

Online tools for structural design

See

http://www.xcalcs.com/docs/symbolinfo.htm

if you want to use symbols on these fora

 

[ko99]

Another possibility is Microtherm. I never used it before but the specs look impressive:

http://www.microtherm.uk.com/index.html

I can't quite picture your application, but it helps to understand all the thermal paths. If the 200F surface has good alternative thermal paths, you may not need a high-tech insulator. On the other hand, if all the other paths are poor, radiative heat transfer could bypass your attempts to isolate it.

Good luck,

ko (

http://www.ecooling.biz)