The key factors for successful preparation of Polyurethane are concentration of the reactants (especially the branching moiety), addition rate of the chain extender, reaction time and temperature. Many a times when we are unable to control any or some of these factors, there is a result of gel formation. I want to know if the gel can be of any use or is it of no good at all.
Young H Kim
Most of PU foams, used as insulator and cushions, are corsslinked. Is that what you are trying to make?
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Ali Pournaghshband
I understand you cannot control the reaction. It depends on what you want to make. Without controlling the reaction, you have residual NCO, low molecular weight and weak mechanical properties.
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