Effect of Modified Halloysite/Expandable Graphite Addition on Thermal and Intumescent Properties of the Fire-Resistant Paints for Steel

Abstract The article presents results of the research on influence halloysite and its modified versions in a configuration with expandable graphite thermal stability, integrity intumescence fire-resistant paints for steel based epoxy resin ammonium polyphosphate/pentaerythritol/melamine (APP/PER/MEL) system. preliminary scanning electron microscope (SEM) analysis showed that sulfuric acid (M2) has best surface expansion. Nanotubes increased their volume nanoplates were more delaminated. Temperature tests subsequent SEM confirmed these results, as homogeneous structure 50-fold multiplication was obtained sample M2/expandable graphite, while pure halloysite/expandable multiplied only 15-fold. Thermogravimetry/ differential calorimetry (TG/DSC) can significantly change course thermograms, even at low addition (7 wt%), mass loss be reduced by up to about 13 wt%. successfully cooperate introduced into intumescent system without deteriorating physicochemical properties coating.