Influence of inorganic fillers on the fire protection of intumescent coatings

Author:

Duquesne Sophie1,Bachelet Pierre1,Bellayer Séverine1,Bourbigot Serge1,Mertens William2

Affiliation:

1. Unité Matériaux et Transformations (UMET), UMR-CNRS 8207, Equipe Ingénierie des Systèmes Polymères, Ecole Nationale Supérieure de Chimie de Lille (ENSCL), Villeneuve d’Ascq Cedex, France

2. Rockwool B.V., Lapinus Fibres, Roermond, The Netherlands

Abstract

Intumescent coatings, mainly composed of ammonium polyphosphate, pentaerythritol and melamine, are widely used in the field of fire protection of steel structures. The objective of this study was to investigate how the presence of two different inorganic fillers (titanium dioxide and mineral fibres) will affect the fire performance of an acrylic-based intumescent coating. In both cases, it was observed that the inorganic filler enabled improvement of the fire-protective behaviour of intumescent paints, maintaining their performance for a longer time. The mode of action was attributed to reinforcement of the char due to the presence of the fillers.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

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