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Hot nitric acid (HNQ)
Hot nitric acid (HNQ)
16:13
2
Q: What is 'spray foam' or 'expanding foam'?

ImyafAt the wikipedia are: Spray foam (expanding foam in the UK) is a chemical product created by two materials, isocyanate and polyol resin, which react when mixed with each other and expand up to 30-60 times its liquid volume after it is sprayed in place. Does the mixture of isocyanate and polyol ...

organic-chemistry equilibrium polymers mixtures gas
 
8 hours later…
Martin - マーチン
Martin - マーチン
23:52
@M.A.R. ???

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