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Author(s): , , , , , ,

Keywords: , , , , , ,

Abstract: In order to investigate the morphology of intumescent polyurethane (PU), X-ray tomography is used. Nano MgO was added to some of the chars as a synergist. The results of the morphology investigations were then correlated with measured thermal conductivities of PU chars over a range of temperatures. It was found that X-ray tomography was useful in observing the breakdown of chars during burning. In addition to this, adding nano MgO to the chars resulted in a lower thermal conductivity, and the chars containing MgO were more protective against fires than the chars lacking nano MgO.      

Reference: Polymer Degradation and Stability 98 (2013) 1638-1647

DOI: 10.1016/j.polymdegradstab.2013.06.018