What Happens to Closed-Cell Foam at Cryogenic Temperatures?

  • Thread starter KarenRei
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In summary, Closed-cell foam is commonly used in cryogenic applications and has been used as insulation on the shuttle ET. It is unclear what exactly happens to the foam at cryogenic temperatures, but it is possible that the air inside the cells freezes out and the cells may rupture or decrease in volume. Non-plastic foams, such as foamed aluminum, are also being considered for cryogenic use, but it is uncertain if they would crush, inflate without damage, or experience rupturing. There is currently a lack of information available on the effects of cryogenic temperatures on non-plastic foams.
  • #1
KarenRei
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Closed-cell foam is used in many cryogenic applications - for example, the insulation on the shuttle ET was closed cell. But what exactly happens to a closed-cell foam at cryogenic temperatures? One would presume that the air inside the cells would freeze out. But would the cells rupture? Or would their volume decrease by orders of magnitude? Would they not lose structural integrity on return - do they fully return to normal, or is the freeze-out area damaged?

What about non-plastic foams? For example, there's foamed aluminum on the market today, also being looked at for cryogenic applications in cases. Would it not crush? Would it inflate without damage or would the cells rupture? At the very least one would expect some problems, as aluminum is a fatigue-prone metal...

Searched for an hour or two today and couldn't find any information on this.

Thanks :)
 
  • #3
I still have been unable to find any information, unfortunately.
 

Related to What Happens to Closed-Cell Foam at Cryogenic Temperatures?

1. What is cryogenic closed-cell foam?

Cryogenic closed-cell foam is a type of foam material that is designed to withstand extremely low temperatures, typically below -100°C. It is made from a closed-cell structure, meaning that the cells within the foam are not interconnected and do not allow air or other materials to pass through.

2. How is cryogenic closed-cell foam different from other types of foam?

Unlike other types of foam, cryogenic closed-cell foam is specifically designed to maintain its structural integrity and insulation properties at extremely low temperatures. It also has a higher density and lower thermal conductivity compared to other foams, making it better suited for cryogenic applications.

3. What are the common uses of cryogenic closed-cell foam?

Cryogenic closed-cell foam is commonly used in industries such as aerospace, medical, and energy for its insulation properties in cryogenic systems and equipment. It is also used for thermal insulation in liquid nitrogen storage tanks, cryogenic valves, and pipelines.

4. How is cryogenic closed-cell foam made?

Cryogenic closed-cell foam is typically made by mixing a polymer material, such as polyurethane, with a blowing agent and other additives. The mixture is then expanded and cured in a controlled environment to create the closed-cell structure. The foam is then cut into desired shapes and sizes for specific applications.

5. What are the advantages of using cryogenic closed-cell foam?

The use of cryogenic closed-cell foam offers several advantages, such as its high thermal insulation properties, low thermal conductivity, and resistance to moisture and chemicals. It is also lightweight, durable, and can be easily molded into various shapes and sizes. Additionally, it is cost-effective and can withstand extreme temperatures, making it suitable for a wide range of cryogenic applications.

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