Effect of aluminium hydroxide on intumescent coating

A fireproof composition based on ammonium polyphosphate and pentaerythritol with a number of functional additives was recently developed and studied.

Many red match heads
The fire protection coating developed by the researchers can be used to protect various materials. Source: Sven Hoppe – stock.adobe.com. -

The additives are able to form a protective char during fire exposure below the thermal decomposition temperature of the polymer composites. The decrease in the char formation temperature of the fire-protective coating provides a molar excess of ammonium polyphosphate with respect to the mole fractions of pentaerythritol and aluminum hydroxide.

Protection of various combustible materials

Introducing the latter in the composition of the flame-retardant coating also contributes to the decrease in the char formation temperature. The fire-protection coating can be used to protect various combustible materials, e.g., wood, laminates, plastics, etc.

The study is published in: Journal of Coatings Technology and Research, September 2019, Volume 16, Issue 5, pp 1389–1398.

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