Abstract
Outdoor and indoor exposed wooden structures are prone to the hazard of fire. Thisr is often inevitable and hardly avoidable by factors such as the design. However, wood is widely used as a structural element in buildings, it is present all-over public places and the main source for indoor furniture. Thus, and due to recent incidents, the demand for an effective and leaching-resistant fire protection is rising. In addition, fire protection technologies are desired, which survive mechanical processing. Considering the latter, protective surface coatings show a high fire protection, while on opposite they are very sensitive to mechanical damages. Therefore, various approaches based on a full impregnation of timber with fire retardants have been studied. In the past aluminum, boron, halogens (e.g. bromine) and more recently phosphorus and nitrogen, were shown to be effective fire retardants in wood. Nowadays, most conventional fire retardant systems are halogen-free, while boron is still used. However, boron shows a low resistance to leaching and is classified as a SVHC candidate, which brings up health and environmental issues. The same is true for formaldehyde. Concerning environmental issues, nitrogen and phosphorus were found to be promising alternatives and highly effective fire retardants. Leaching in service was slightly reduced compared to boron but a decrease in strength properties was detected after treatment of wood with those compounds. In general, an increased hygroscopicity of wood was found after any of the listed treatments, together with a leaching of the flame-retardant chemical which was still too high to guarantee a long-term fire protection in wood exposed outside. The overall aim of this study is to (1) give an overview about the past developments and most established fire retardant chemicals and (2) review recent findings and developments in terms of permanent fire retardant treatments of wood.
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References
Odeen K (1985) Fire resistance of wood structures. Fire Technol 21:34–40. https://doi.org/10.1007/BF01095562
Cisek T, Piechocki J (1985) Influence of fire retardants on smoke generation from wood and wood derived materials. Fire Technol 21:122–133. https://doi.org/10.1007/BF01040154
Rowell RM (ed) (2013) Handbook of wood chemistry and wood composites. CRC Press, Boca Raton
Barber D, Gerard R (2015) Summary of the fire protection foundation report - fire safety challenges of tall wood buildings. Fire Sci Rev 4. https://doi.org/10.1186/s40038-015-0009-3
Buschow KHJ (ed) (2001) Encyclopedia of materials: science and technology. Elsevier, Amsterdam
Lowden L, Hull T (2013) Flammability behaviour of wood and a review of the methods for its reduction. Fire Sci Rev 2:4. https://doi.org/10.1186/2193-0414-2-4
Green J (1996) Mechanisms for flame retardancy and smoke suppression-a review. J Fire Sci 14:426–442. https://doi.org/10.1177/073490419601400602
Browne F (1958) Theories of the combustion of wood and its control a survey of the literature. Report #2136, Forest Products Laboratory, Madison (Wi)
Deveci I, Baysal E, Toker H, Yuksel M, Turkoglu T, Peker H (2017) Thermal characteristics of oriental beech wood treated with some leaching resistant bor ates. Wood Res 62:12
Boric acid - Registry of SVHC intentions until outcome – ECHA. https://echa.europa.eu/de/registry-of-svhc-intentions/-/dislist/details/0b0236e180e4b39c
Tondi G, Haurie L, Wieland S, Petutschnigg A, Lacasta A, Monton J (2014) Comparison of disodium octaborate tetrahydrate-based and tannin-boron-based formulations as fire retardant for wood structures: dot and tannin-boron as fire retardant. Fire Mater 38:381–390. https://doi.org/10.1002/fam.2186
Alaee M (2003) An overview of commercially used brominated flame retardants, their applications, their use patterns in different countries/regions and possible modes of release. Environ Int 29:683–689. https://doi.org/10.1016/S0160-4120(03)00121-1
Marney DCO, Russell LJ, Mann R (2008) Fire performance of wood (Pinus radiata) treated with fire retardants and a wood preservative. Fire Mater 32:357–370. https://doi.org/10.1002/fam.973
Hirata T, Kawamoto S, Nishimoto T (1991) Thermogravimetry of wood treated with water-insoluble retardants and a proposal for development of fire-retardant wood materials. Fire Mater 15:27–36. https://doi.org/10.1002/fam.810150106
Lewin M (1997) Flame retarding of wood by chemical modification with bromate-bromide solutions. J Fire Sci 15:29–51. https://doi.org/10.1177/073490419701500103
Horacek H, Grabner R (1996) Advantages of flame retardants based on nitrogen compounds. Polym Degrad Stab 54:205–215. https://doi.org/10.1016/S0141-3910(96)00045-6
Stevens R, van Es DS, Bezemer R, Kranenbarg A (2006) The structure–activity relationship of fire retardant phosphorus compounds in wood. Polym Degrad Stab 91:832–841. https://doi.org/10.1016/j.polymdegradstab.2005.06.014
LeVan SL, Winandy JE (1990) Effects of fire retardant treatments on wood strength: a review. Wood Fiber Sci 22:20
Truax TR, Harrison CA, Baechler RH (1956) Experiments in fireproofing wood, fifth progress report. Forest Products Laboratory, US Department of Agriculture
Hull TR, Witkowski A, Hollingbery L (2011) Fire retardant action of mineral fillers. Polym Degrad Stab 96:1462–1469. https://doi.org/10.1016/j.polymdegradstab.2011.05.006
Mazela B, Broda M, Perdoch W Fire resistance of wood treated with potassium carbonate and silanes. 8
Mai C, Militz H (2004) Modification of wood with silicon compounds inorganic silicon compounds and sol-gel systems: a review. Wood Sci Technol 37:339–348. https://doi.org/10.1007/s00226-003-0205-5
Bulewicz EM, Pelc A, Kozlowski R, Miciukiewicz A (1985) Intumescent silicate-based materials: mechanism of swelling in contact with fire. Fire Mater 9:171–175. https://doi.org/10.1002/fam.810090405
Giudice CA, Pereyra AM (2009) Silica nanoparticles in high silica/alkali molar ratio solutions as fire-retardant impregnants for woods. Fire Mater. n/a-n/a (2009). https://doi.org/10.1002/fam.1018
Pabeliña KG, Lumban CO, Ramos HJ (2012) Plasma impregnation of wood with fire retardants. Nucl Instrum Methods Phys Res Sect B: Beam Interact Mater Atoms 272:365–369. https://doi.org/10.1016/j.nimb.2011.01.102
Sun QF, Lu Y, Zhang HM, Yang DJ, Xu JS, Li J, Liu YX, Shi JT (2012) Flame retardancy of wood coated by ZnO nanorod arrays via a hydrothermal method. Mater Res Innov 16:326–331. https://doi.org/10.1179/1433075X11Y.0000000066
Costes L, Laoutid F, Brohez S, Dubois P (2017) Bio-based flame retardants: when nature meets fire protection. Mater Sci Eng: R: Rep 117:1–25. https://doi.org/10.1016/j.mser.2017.04.001
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Sauerbier, P., Mayer, A.K., Emmerich, L., Militz, H. (2020). Fire Retardant Treatment of Wood – State of the Art and Future Perspectives. In: Makovicka Osvaldova, L., Markert, F., Zelinka, S. (eds) Wood & Fire Safety. WFS 2020. Springer, Cham. https://doi.org/10.1007/978-3-030-41235-7_14
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