STUDY OF FIRE PROTECTION PROPERTIES OF INTUMESCENT ROLL COATINGS
DOI:
https://doi.org/10.32782/naturaljournal.12.2025.10Keywords:
fire protection, intumescent coating, expandable graphite, swollen graphite, foam char, roll materialsAbstract
Ensuring effective and rapid fire protection of building structures, infrastructure and defence facilities requires the use of efficient, technologically advanced mobile means. Intumescent roll coatings are of particular relevance, as they are capable of providing constructive and reactive fire protection through the interaction of fibre substrate and special compositions. These coatings are flexible, easy to apply and adaptable to different operating conditions. The purpose of the study is to investigate the effect of graphite fillers on the fire protection efficiency of roll intumescent fire protection materials based on different types of inorganic substrates (glass fibre, mineral fibre, ceramic fibre). The methods of the experiment were the preparation of compositions based on the ammonium polyphosphate (APP)/ melamine (MA)/pentaerythritol (PE) system with the variable addition of expandable (EG) and swollen graphite (SG), the formation of roll coatings, and fire tests using the Bunsen burner method. The necessity of combining graphite fillers with an intumescent system to achieve effective fire protection characteristics of reactive roll coatings has been proved. The study found that the most effective compositions contain EG – no more than 5%, SG – no more than 1%, and also include a glass fibre mesh as a reinforcing element. Such coatings provide stable intensive swelling, formation of a homogeneous char layer and effective thermal insulation. The scientific novelty lies in the comprehensive analysis of the influence of formulation parameters on the thermal insulation properties of coatings, which allows for a targeted approach to the design of the composition of the intumescent coating with specified fire resistance indicators. The practical significance of the study is based on the possibility of implementing the developed roll of mobile fire protection products, the production of which is not available in Ukraine.
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