Effect of nano titanium dioxide in intumescent fireproof coating on thermal performance and char morphology

Abstract

This research study was performed in the effects of nano material in intumescent fireproof coating on thermal performance and char morphology. The nanomaterials were synthesized via hydrothermal process by using rutile, ilmenite and leucoxene minerals compare titanium dioxide for protective the steel structure in cause of a fire, which has insulation properties. The intumescent fireproof coating was contained thermoplastic acrylic resin, fire retardant agents and organic filler to evaluate its effect thermal performance and char formation. The tests were performance and characterization in a furnace accordance with ASTM E-119 fire test of building construction and material standard, with temperatures 538, 704, 843, 927 and 1,010° C for 5, 10, 30, 60 and 120 min. The foam structure of intumescent fireproof coating has been observed using scanning electron microscope (SEM). The results showed that the addition of nano titanium dioxide from all 3 type of minerals in amount 1.0% using SEM analyze it was found that the porosity and the large expands of the volume which the increasing porous affects insulate of fireproofing coating and the height expansion. It’s suggested that nano titanium dioxide can improve thermal performance properties and significantly effect of porous and continuous the char formation if incorporated as flame retardant filler in suitable intumescent paints.