2009
DOI: 10.1002/app.29940
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Reactions of stoichiometric intumescent paints

Abstract: Under the influence of heat intumescent paints with stoichiometric compositions decomposed to defined compounds: Ammonium polyphosphate degraded to polyphosphoric acid and ammonia. Polyphosphoric acid reacted with pentaerythritols and glycerol to cyclic phosphoric acid esters, which were identified as the blowing agents. Melamine and polyphosphoric acid combined to melamine polyphosphate and dipolyphosphate. In further degradation of polyphosphoric acid, it dehydrated to phosphorus pentoxide, which reacted wit… Show more

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Cited by 26 publications
(20 citation statements)
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“…The results showed that waterborne No Fire A sample provides better expansion with fragile char compared with epoxy-based Firex RX 2390 system. 41 The same behavior was further confirmed by Horacek, 42 who investigated cross-linked epoxies and found reduced expansion and poor insulation; the addition of glycerol as an additional carbon source improves the fire protection performance. Glycerol possibly reacts at low temperature with polyphosphoric acid.…”
Section: Test Methods and Characterization Of Intumescent Coatingsmentioning
confidence: 60%
“…The results showed that waterborne No Fire A sample provides better expansion with fragile char compared with epoxy-based Firex RX 2390 system. 41 The same behavior was further confirmed by Horacek, 42 who investigated cross-linked epoxies and found reduced expansion and poor insulation; the addition of glycerol as an additional carbon source improves the fire protection performance. Glycerol possibly reacts at low temperature with polyphosphoric acid.…”
Section: Test Methods and Characterization Of Intumescent Coatingsmentioning
confidence: 60%
“…The maximum expansion was 1,4 compared with 40 for a mixture of 4 moles APP, 1 mole PER, and 1 mole M in Figure 7. The EF max for various molar combinations of nAPP, nPER, and nM as well as nAPP, nDPER, and nM were measured 25. In Figures 8 and 9, EF max showed a linear dependence on the molecular weight MW and followed the relations:…”
Section: Resultsmentioning
confidence: 95%
“…Preliminary tests have shown that the disodium and dipotassium salts possess promising intumescent properties. We plan to develop these compounds as constituents of intumescent paints [7].…”
Section: Discussionmentioning
confidence: 99%