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Assessment of the effect of the applied hydroxide additives on the fire properties of varnish coating systems with a damping mass

Pauli Wojciech, Wiecha Karol, Milczarek Danuta, Tarka Izabela, Śliwiński Cezary

Production Engineering Archives

2022

Vol. 28, Iss. 4

359--368

The article addresses the very important issue of enriching the products with additives improving the fire resistance properties. For this purpose, hydroxide additives (aluminium and magnesium) were used, which decompose at increased temperature to form water. When designing the experiments, one of the Experimental Design Methods (DOE) was used: 2k factorial design for two independent varia-bles. The enriched coatings were tested in accordance with the requirements of PN-EN 45545-2, incl. Intensity of heat release, lateral propagation of flame on products in vertical configuration, or testing of generated fumes and gases. Mechanical properties such as cohesion and impact toughness were also tested. The effectiveness of this type of additives was assessed, as well as their synergistic effect (due to the different decomposition temperature).