A REVIEW OF SANDWICH PANEL

Methylene Diphenyl Diisocyanate (MDI): MDIs are produced because of the phosgenation with the condensation product of aniline with formaldehyde. The most common isomer Employed in polyurethane manufacturing is purified four,four isomers. MDIs are generally Utilized in developing rigid and semi-rigid polyurethane foams.Polyurethane foams made out of