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Polyurethane Foam in Steam Service

Polyurethane Foam in Steam Service

Polyurethane Foam in Steam Service

(OP)
What is the effect of steam on rigid polyurethane closed cell foam?  At what steam temperature would the foam melt in the absence of oxygen?  At what temperature would it burn if oxygen is present?

RE: Polyurethane Foam in Steam Service

The melt and burn points can vary among formulations, however the base molecule suffers from hydrolysis at temperatures well below the boiling point of water (212 F, 100C).

RE: Polyurethane Foam in Steam Service

(OP)
What about for higher pressure steam at 350-400F?

RE: Polyurethane Foam in Steam Service

High pressure steam is higher temperature steam; the urethane would just fail more quickly the hotter it got.

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