|High temperature foam|
I am looking for a plastic/compound/foam that:
1) Can be poured in a mould.
2) Is lightweight (<500 kg/m3)
3) With a high service temperature (>300 degrees celcius)
4) Thermally isolates well (<0.1 W/mK)
5) With a surface after curing that does not stick.
6) Is stiff after curing (>1 GPa)
And probably the most difficult criterium:
7) An address where I can buy this as a private person, preferably in Benelux, Germany or Poland.
With kind regards,
follow up posts
One solution could be High Density (Rigid) Polyisocyanurate Foam. However this polymer starts to fail at a service temperature of 177 degrees Celsius. The conductivity, processing, surface and other physical properties are more or less in agreement with your requirements.
Very probably you are familiar with Expanded Polystyrene (see wiki definition at http://en.wikipedia.org/wiki/Polystyrene). But melting point is 240 degrees Celsius. Again below your service temperature requirement.
The only ultra - high temperature foams left - but which are rather expensive (which is the case with most high performance polymers for aerospace applications) - are the Polyimide based foams (temperature resistant up to 316 degrees Celsius). Would this utra-high temperature Polyimide foam be suitable for your application?
Hello Composite Agency,
Thank you very much for your response.
Polystyrene has a glass temperature of 95 degrees celcius, and is therefor not suitable.
Polyisocyanurate and especially polyimide foam looks like they will be a much better choice than the polyurethane foam that I use now.
Could you perhaps give me some pointers where to start looking for these foams? I have tried to contact some retailers, but to no avail.
Good Morning Merlijn,
The ultra high temperature Polyimide foam is a typical NASA - patented Polyimide technology. The American GFT corporation has experience with application of their high performance Polyimide products in aviation, marine and automotive applications. For application or equipment specific diffusion and corrosion calculations (moisture and gas, fuel, diesel transmission) you may require additional expertise from our side.
Check the GFT website at: http://www.gftcorp.com/
Check the GFT products at:http://www.gftcorp.com/products/product-listing.html
(PerForma-HÂ® Polyimide Thermal Insulation)
Good luck with the project!
Hello Composite Agency,
Thank you very much for your pointers. I have contacted GFT about their Polyimide foam. I will remember your consultancy offer.