It is important to enhance the fire retardant properties of wood. Although it was mentioned in several literature that the phosphate based fire retardants (FR) leaches out from wood easily, it was difficult to find the exact leaching properties. In this study, Scots pine sapwood (Pinus sylvestris L.) and Maple (Acer platanoides L.) were impregnated with FR and leached as described in EN84. The specimens were tested with a mass loss cone calorimeter to observe the fire performance. The FR leached out easily from both species, but more from Scots pine than maple. Furthermore, the FR treated specimens showed better results with delayed time to ignition, lower maximum average rate of heat emission, peak heat release rate and calculated fire growth rate.
Keywords: fire behaviour, fire retardant, leaching test, Norway maple, Scots pine
Authors
Kim I.
Department of Wood Biology and Wood Products, Georg-August-Universität Göttingen, Göttingen
Larnøy E.
Norwegian Institute of Bioeconomy Research, Ås, Norway
Militz H.
Department of Wood Biology and Wood Products, Georg-August-Universität Göttingen, Göttingen
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