Fire retarding performance of hydromagnesite on forest species from a wildland/urban interface area in Athens

Liodakis, S.; Agiovlasitis, I.P.; Antonopoulos, I.; Stamatakis, Michael G.

doi:10.1016/j.foreco.2006.08.167

Cited by 5 publications

(3 citation statements)

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“…However there have been other proposed uses of this mineral and its natural blends with huntite, such as its use to fight forest fires [46][47][48][49][50] and its use to control the burning rate of cigarette papers [51,52].…”

Section: Action Of Hydromagnesite and Huntite As A Fire Retardant In mentioning

confidence: 99%

The fire retardant behaviour of huntite and hydromagnesite – A review

Hollingbery

Hull

2010

Polymer Degradation and Stability

132

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Naturally occurring mixtures of hydromagnesite and huntite have found important industrial use. Their endothermic decomposition over a temperature range similar to that of commonly used polymers and their release of water and carbon dioxide, has led to such mixtures being successfully used as fire retardants. They have replaced aluminium hydroxide and magnesium hydroxide in many applications. The current understanding of the thermal decomposition mechanism of both minerals and their combination in natural mixtures has been reviewed and related to their fire retardant action. Both minerals contribute to the reduction in flammability of polymers although the extent of these interactions has not been fully investigated. However, the fire retardant mechanism of these minerals appears more complicated than either aluminium hydroxide or magnesium hydroxide. This paper critically examines the literature on the fire retardant behaviour of mixtures of hydromagnesite and huntite, providing information of particular use to formulators of fire retardant polymers using these minerals. It also highlights the gaps in understanding of the fire retardant mechanisms of mixtures of hydromagnesite and huntite and areas that require further research.

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Section: Action Of Hydromagnesite and Huntite As A Fire Retardant In mentioning

confidence: 99%

The fire retardant behaviour of huntite and hydromagnesite – A review

Hollingbery

Hull

2010

Polymer Degradation and Stability

132

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“…The thermal degradation of these minerals through endothermic release of carbon dioxide and water has lead to several studies showing the application of mixtures of these minerals including fire retardant polymer compounds , controlling burning rates in cigarettes [43,44], and as a potential material for fighting forest fires [45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

The thermal decomposition of natural mixtures of huntite and hydromagnesite

Hollingbery

Hull

2012

Thermochimica Acta

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“…It has the following chemical formula [26] and thermally decomposes [1,3], between about 450°C and 750°C in two stages, releasing only carbon dioxide, leaving a solid residue of magnesium oxide and calcium oxide. The thermal decomposition of mixtures of these minerals through endothermic release of carbon dioxide and water has led to several studies showing their potential applications, including fire retardant additives for polymer compounds [2,4,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46], controlling burning rates in cigarettes [47,48], and as a potential material for fighting forest fires [49][50][51][52][53]. Due to its high decomposition temperature it has been suggested [40,41,43] that huntite has little more influence than an inert diluent filler in terms of fire retardancy.…”

Section: Introductionmentioning

confidence: 99%

The fire retardant effects of huntite in natural mixtures with hydromagnesite

Hollingbery¹,

Hull²

2012

Polymer Degradation and Stability

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The fire retardant effects of natural mixtures of huntite and hydromagnesite have been investigated. As well as being entirely natural these mixtures of minerals can be considered "greener" and more environmentally friendly, in their production methods, than alternatives such as aluminium hydroxide and magnesium hydroxide. It has been shown that the release of water and carbon dioxide from hydromagnesite helps to increase the time to ignition and peak heat release in cone calorimeter testing. Huntite has been shown to decrease the average rate of heat release and increase the strength of the residue. Electron microscopy has shown that the huntite particles maintain their platy morphology during combustion in the cone calorimeter. The morphology of these particles helps to reduce the rate of heat release by slowing the release of flammable decomposition products to the flame. The platy shape of the huntite particles increases the strength of the residue containing higher proportions of this mineral. Huntite is shown to play an active part in improving fire retardancy when used in a mixture with hydromagnesite, giving performance for typical mixtures comparable to those of aluminium hydroxide.

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Fire retarding performance of hydromagnesite on forest species from a wildland/urban interface area in Athens

Cited by 5 publications

References 0 publications

The fire retardant behaviour of huntite and hydromagnesite – A review

The fire retardant behaviour of huntite and hydromagnesite – A review

The thermal decomposition of natural mixtures of huntite and hydromagnesite

The fire retardant effects of huntite in natural mixtures with hydromagnesite

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