NDLI: Correlating the Performance of a Fire-Retardant Coating across Different Scales of Testing

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Correlating the Performance of a Fire-Retardant Coating across Different Scales of Testing

Content Provider	MDPI
Author	Ng, Yan Hao Zope, Indraneel Suhas Dasari, Aravind Tan, Kang Hai
Copyright Year	2020
Description	Material-scale tests involving milligrams of samples are used to optimize fire-retardant coating formulations, but actual applications of these coatings require them to be assessed with structural-scale fire tests. This significant difference in the scale of testing (milligrams to kilograms of sample) raises many questions on the relations between the inherent flammability and thermal characteristics of the coating materials and their “performance” at the structural scale. Moreover, the expected “performance” requirements and the definition of “performance” varies at different scales. In this regard, the pathway is not established when designing and formulating fire-retardant coatings for structural steel sections or members. This manuscript explores the fundamental relationships across different scales of testing with the help of a fire-protective system based on acrylic resin with a typical combination of intumescent additives, viz. ammonium polyphosphate, pentaerythritol, and expandable graphite. One of the main outcomes of this work dictates that higher heat release rate values and larger amounts of material participating in the pyrolysis process per unit time will result in a rapid rise in steel substrate temperature. This information is very useful in the design and development of generic fire-retardant coatings.
Starting Page	2271
e-ISSN	20734360
DOI	10.3390/polym12102271
Journal	Polymers
Issue Number	10
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2020-10-02
Access Restriction	Open
Subject Keyword	Polymers Coatings and Films Multi-scale Fire Retardant Coating Cone Calorimeter Furnace Tests Iso 834 Fire Curves
Content Type	Text
Resource Type	Article

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