Quantification of Thermal Barrier Efficiency of Intumescent Coatings on Glass Fibre-Reinforced Epoxy Composites

In this work, the thermal barrier efficiency of three commercial intumescent coatings of varying thicknesses on glass fibre-reinforced epoxy (GRE) composites has been studied using cone calorimetric parameters and temperature profiles through the thicknesses, obtained by inserting thermocouples in the sample during the experiment. The methodologies developed to measure char expansion of the three coatings during the cone experiment as well under slow heating conditions using an advanced rheometric expansion system have been discussed. While the expansion ratios in the two experiments were different, the trends were similar. Thermal conductivities of the chars as a function of time were measured, which could be related to the intumescence steps of respective coatings. The accurate measurements of these parameters are important in predicting the surface requirements of an ideal coating that can enable a given composite structure to survive a defined thermal threat for a specified period of time.

[1]  Esmaeil Pournamazian Najafabadi,et al.  Effect of intumescent paint coating on mechanical properties of FRP bars at elevated temperature , 2018, Polymer Testing.

[2]  Asghar Vatani Oskouei,et al.  The effect of mechanical and thermal properties of FRP bars on their tensile performance under elevated temperatures , 2017 .

[3]  S. Bourbigot,et al.  Intumescence: Tradition versus novelty. A comprehensive review , 2015 .

[4]  S. Bourbigot,et al.  The Effects of Thermophysical Properties and Environmental Conditions on Fire Performance of Intumescent Coatings on Glass Fibre-Reinforced Epoxy Composites , 2015, Materials.

[5]  M. A. Amalina,et al.  Influences of flame-retardant fillers on fire protection and mechanical properties of intumescent coatings , 2014 .

[6]  Anna Zheng,et al.  Effects of ammonium polyphosphate to pentaerythritol ratio on composition and properties of carbonaceous foam deriving from intumescent flame-retardant polypropylene , 2014 .

[7]  S. Bourbigot,et al.  Thermal degradation and fire performance of intumescent silicone‐based coatings , 2013 .

[8]  E. Kandare,et al.  A comparative study on the efficacy of varied surface coatings in fireproofing glass/epoxy composites , 2012 .

[9]  Lei Song,et al.  A effective flame retardant for epoxy resins based on poly(DOPO substituted dihydroxyl phenyl pentaerythritol diphosphonate) , 2011 .

[10]  E. Kandare,et al.  Thermo-mechanical Responses of Fiber-reinforced Epoxy Composites Exposed to High Temperature Environments. Part I: Experimental Data Acquisition , 2010 .

[11]  John E. J. Staggs,et al.  Thermal conductivity estimates of intumescent chars by direct numerical simulation , 2010 .

[12]  E. Kandare,et al.  The use of fire‐retardant intumescent mats for fire and heat protection of glass fibre‐reinforced polyester composites: Thermal barrier properties , 2009 .

[13]  E. Kandare,et al.  Composites having improved fire resistance , 2008 .

[14]  Bernhard Schartel,et al.  Development of fire‐retarded materials—Interpretation of cone calorimeter data , 2007 .

[15]  Sophie Duquesne,et al.  Characterization of the performance of an intumescent fire protective coating , 2006 .

[16]  S. Gustafsson,et al.  Parameter estimations for measurements of thermal transport properties with the hot disk thermal constants analyzer , 2000 .

[17]  Michel Le Bras,et al.  Press Release: Fire Retardancy of Polymers: The use of Intumescence , 1998, Engineering Plastics.

[18]  B. Kandola,et al.  Complex char formation in flame-retarded fibre-intumescent combinations—II. Thermal analytical studies , 1996 .

[19]  S. Gustafsson.  Transient plane source techniques for thermal conductivity and thermal diffusivity measurements of solid materials , 1991 .

[20]  G. Camino,et al.  Intumescent fire-retardant systems , 1989 .

[21]  C. Vovelle,et al.  Thermal Degradation of Painted Wood. an Experimental Study , 1983 .

[22]  M. N. Khan,et al.  Transient hot-strip method for simultaneously measuring thermal conductivity and thermal diffusivity of solids and fluids , 1979 .