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The effect of diammonium phosphate and sodium silicate on the adhesion and fire properties of birch veneer

  • Saara Hautamäki EMAIL logo , Michael Altgen , Daniela Altgen , Erik Larnøy ORCID logo , Tuomas Hänninen and Lauri Rautkari
Published/Copyright: September 24, 2019
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Abstract

In built environments the combustibility of wood is a great concern, which limits the use of wood as a building material due to legislation. The reaction-to-fire properties of wood can be altered with the use of fire-retardant chemicals, and most of the commonly used fire retardants already have a long history of use. However, only limited information is available on the impact of different fire retardants on the adhesion properties of wood. Additionally, comparative studies between chemicals from different groups of fire retardants is scarce. The objective of this study was to investigate and compare the effects of two commonly used fire retardants, sodium silicate (SS) and diammonium phosphate (DAP), on veneer properties, the focus being especially on thermal behavior and adhesion. Thermal properties and combustibility were studied using thermogravimetric analysis (TGA), flame test and calorimetry. Glue bond strength was analyzed with an automated bonding evaluation system (ABES) and the leaching of chemicals was determined according to EN84. Additionally, the surface characteristics of modified veneers were imaged with scanning electron microscopy (SEM). Results revealed notable differences in the thermal properties of SS and DAP, with DAP having better fire-retardant performance in all thermal testing. SS also affected thermal properties and combustibility of modified veneers, but the effect was only moderate compared to DAP. Neither SS or DAP had any significant resistance against leaching but ABES testing showed a notable increase in the glue bond strength of DAP modified veneers.

Award Identifier / Grant number: 18/13.01/2016

Funding statement: The authors thank for the support from Regional Council of South Savo from European Regional Development Fund (project number 18/13.01/2016), granted for the project Veneer modification, within which these results were obtained.

References

Altun, S., Ozcifci, A., Şenel, A., Baysal, E., Toker, H. (2010) Effects of silica gel on leaching resistance and thermal properties of impregnated wood. Wood Res. 55:2010–2101.Search in Google Scholar

Ayrilmis, N., Akbulut, T., Dundar, T., White, R.H., Mengeloglu, F., Buyuksari, U., Candan, Z., Avci, E. (2012) Effect of boron and phosphate compounds on physical, mechanical, and fire properties of wood-polypropylene composites. Constr. Build. Mater. 33:63–69.10.1016/j.conbuildmat.2012.01.013Search in Google Scholar

Basak, S., Samanta, K.K., Chattopadhyay, S.K., Das, S., Narkar, R., Dsouza, C., Shaikh, A.H. (2014) Flame retardant and antimicrobial jute textile using sodium metasilicate nonahydrate. Polish J. Chem. Technol. 16:106–113.10.2478/pjct-2014-0039Search in Google Scholar

Baysal, E., Sonmez, A., Colak, M., Toker, H. (2006) Amount of leachant and water absorption levels of wood treated with borates and water repellents. Bioresour. Technol. 97:2271–2279.10.1016/j.biortech.2005.10.044Search in Google Scholar

Black, J.M. (1958) The effect of fire-retardant chemicals on glues used in plywood manufacture. Forest Products Laboratory, U.S. Department of Agriculture Forest Service. Report No. 1427.Search in Google Scholar

Boonstra. M. (1997) Preservative treated wood. In: Harmonization of leaching/extraction tests. Eds. Heasman, L., van der Sloot, H.A., Quevauviller, P. Elsevier, Amsterdam, Netherlands. pp. 212–220.Search in Google Scholar

Browne, F. (1958) Theories of the combustion of wood and its control. In: U.S. Forest Service no. 2136. Forest Product Laboratory, Madison, WI. pp. 20–33.Search in Google Scholar

Di Blasi, C., Branca, C., Galgano, A. (2007) Effects of diammonium phosphate on the yields and composition of products from wood pyrolysis. Ind. Eng. Chem. Res. 46:430–438.10.1021/ie0612616Search in Google Scholar

Grancaric, A.M., Botteri, L., Alongi, J., Malucelli, G. (2015) Synergistic effects occurring between water glasses and urea/ammonium dihydrogen phosphate pair for enhancing the flame retardancy of cotton. Cellulose 22:2825–2835.10.1007/s10570-015-0671-6Search in Google Scholar

Grexa, O., Horváthová, E., Bešinová, O., Lehocký, P. (1999) Flame retardant treated plywood. Polym. Degrad. Stab. 64:529–533.10.1016/S0141-3910(98)00152-9Search in Google Scholar

Holmes, C.A. (1976) Effect of fire-retardant treatments on performance properties of wood. Abstr. Pap. Am. Chem. Soc. 172:38.10.1021/bk-1977-0043.ch006Search in Google Scholar

Jost, M., Sernek, M. (2009) Shear strength development of the phenol-formaldehyde adhesive bond during cure. Wood Sci. Technol. 43:153–166.10.1007/s00226-008-0217-2Search in Google Scholar

Kline, G.M., Reinhart, F.W., Rinker, R.C., DeLollis, N.J. (1946) Effect of catalysts and pH on strength of resin-bonded plywood. J. Res. Natl. Bur. Stand. (1934) 37:281–31.0.10.6028/jres.037.018Search in Google Scholar

Kozlowski, R., Wladyka-Przybylak, M. (2000) Natural polymers, wood and lignocellulosic materials. In: Fire retardant materials. Eds. Horrocks, A.R., Price, D. Woodhead Publishing Limited, Cambridge. pp. 293–317.10.1533/9781855737464.293Search in Google Scholar

Lebow, S.T., Winandy, J.E. (1999) Effect of fire-retardant treatment on plywood pH and the relationship of pH to strength properties. Wood Sci. Technol. 33:285–298.10.1007/s002260050116Search in Google Scholar

Lee, S.J., Thole, V. (2018) Investigation of modified water glass as adhesive for wood and particleboard: mechanical, thermal and flame retardant properties. Eur. J. Wood Wood Prod. 76:1427–1434.10.1007/s00107-018-1324-xSearch in Google Scholar

LeVan, S.L., Jerrold, E.W. (1990) Effects of fire-retardant treatments on wood strength: a review. Wood Fiber Sci. 22:113–131.Search in Google Scholar

LeVan, S.L., Kim, J.M., Nagel, R.J., Evans, Ja.W. (1996) Mechanical properties of fire-retardant-treated plywood after cyclic temperature exposure. For. Prod. J. 46:64–71.Search in Google Scholar

Lowden, L.A., Hull, T.R. (2013) Flammability behaviour of wood and a review of the methods for its reduction. Fire Sci. Rev. 2:1–9.10.1186/2193-0414-2-4Search in Google Scholar

Mai, C., Militz, H. (2004) Modification of wood with silicon compounds. Inorganic silicon compounds and sol-gel systems: a review. Wood Sci. Technol. 37:339–348.10.1007/s00226-003-0205-5Search in Google Scholar

Nguyen, T.T., Nguyen, T.V.K., Xiao, Z., Wang, F., Zheng, Z., Che, W., Xie, Y. (2019) Combustion behavior of poplar (Populus adenopoda Maxim.) and radiata pine (Pinus radiata Don.) treated with a combination of styrene-acrylic copolymer and sodium silicate. Eur. J. Wood Wood Prod. 77:439–452.10.1007/s00107-019-01401-2Search in Google Scholar

Obanda, D.N., Shupe, T.F., Barnes, H.M. (2008) Reducing leaching of boron-based wood preservatives – a review of research. Bioresour. Technol. 99:7312–7322.10.1016/j.biortech.2007.12.077Search in Google Scholar PubMed

Östman, B., Tsantaridis, L. (2016a) Durability of the reaction to fire performance for fire retardant treated (FRT) wood products in exterior applications – a ten years report. In: MATEC Web of Conferences 46.10.1051/matecconf/20164605005Search in Google Scholar

Östman, B., Tsantaridis, L. (2016b) Fire retardant treated wood products – properties and uses. In: Proceedings IRG Annual Meeting in Lisbon, Portugal. IRG Secretariat, Stockholm, Sweden. pp. 1–14.Search in Google Scholar

Östman, B., Voss, A., Hughes, A., Hovde, P.J., Grexa, O. (2001) Durability of fire retardant treated wood products at humid and exterior conditions review of literature. Fire Mater. 25:95–104.10.1002/fam.758Search in Google Scholar

Pries, M., Mai, C. (2013) Fire resistance of wood treated with a cationic silica sol. Eur. J. Wood Wood Prod. 71:237–244.10.1007/s00107-013-0674-7Search in Google Scholar

Riedl, B., He, G. (2004) Curing kinetics of phenol formaldehyde resin and wood-resin interactions in the presence of wood substrates. Wood Sci. Technol. 38:69–81.10.1007/s00226-003-0221-5Search in Google Scholar

Rohumaa, A., Hunt, C.G., Frihart, C.R., Saranpää, P., Ohlmeyer, M., Hughes, M. (2014) The influence of felling season and log-soaking temperature on the wetting and phenol formaldehyde adhesive bonding characteristics of birch veneer. Holzforschung 68:965–970.10.1515/hf-2013-0166Search in Google Scholar

Rowell, R.M., Dietenberger, M.A. (2012) Thermal properties, combustion, and fire retardancy of wood. In: Handbook of wood chemistry and wood composites. Ed. Rowell, R.M. CRC Press, Boca Raton, FL. pp. 127–150.10.1201/b12487-11Search in Google Scholar

Rowell, R.M., Susott, R.A. (1982) Bonding fire retardants to wood. Part I. Thermal behavior of chemical bonding agents. Wood Fiber 16:214–223.Search in Google Scholar

Sam Williams, R. (2010) wood_handbook_fpl_2010. Gen. Tech. Rep. FPL-GTR-190. Retrieved from https://www.fpl.fs.fed.us/documnts/fplgtr/fpl_gtr190.pdf. Accessed date: 11 February 2019.Search in Google Scholar

Selbo, M.L. (1959) Summary of information on gluing of treated wood. Forest Products Laboratory, U. S. Department of Agriculture Forest Service. Report No. 1729.Search in Google Scholar

Sernek, M. (2002) Comparative analysis of inactivated wood surfaces comparative analysis of inactivated wood surfaces. Holzforschung 58:22–31.10.1515/HF.2004.004Search in Google Scholar

Shabir Mahr, M., Hübert, T., Schartel, B., Bahr, H., Sabel, M., Militz, H. (2012) Fire retardancy effects in single and double layered sol-gel derived TiO2 and SiO2-wood composites. J. Sol-Gel Sci. Technol. 64:452–464.10.1007/s10971-012-2877-5Search in Google Scholar

Shafizadeh, F. (1984) The Chemistry of Pyrolysis and Combustion. In: The chemistry of solid wood. Ed. Rowell, R.M. American Chemical Society, Washington, DC, pp. 489–529.10.1021/ba-1984-0207.ch013Search in Google Scholar

Sharma, N.K., Verma, C.S., Chariar, V.M., Prasad, R. (2015) Eco-friendly flame-retardant treatments for cellulosic green building materials. Indoor Built Environ. 24:422–432.10.1177/1420326X13516655Search in Google Scholar

Subasri, R., Näfe, H. (2008) Phase evolution on heat treatment of sodium silicate water glass. J. Non-Cryst. Solids 354:896–900.10.1016/j.jnoncrysol.2007.08.037Search in Google Scholar

Sweet, M.S. (1993) Fire performance of wood: test methods and fire retardant treatments. In: Recent advances in flame retardancy of polymeric Materials. Ed. Zaikov, G.E. Business Communications Co., Stamford, CT. pp. 36–43.Search in Google Scholar

Terzi, E., Kartal, S.N., White, R.H., Shinoda, K., Imamura, Y. (2011) Fire performance and decay resistance of solid wood and plywood treated with quaternary ammonia compounds and common fire retardants. Eur. J. Wood Wood Prod. 69:41–51.10.1007/s00107-009-0395-0Search in Google Scholar

Tyner, H.D. (1941) Fire-extinguishing effectiveness of chemicals in water solution. Ind. Eng. Chem. 33:60–65.10.1021/ie50373a011Search in Google Scholar

White, R.H., Dietenberger, M.A. (2004) Cone calorimeter evaluation of wood products. In 15th Annual BCC Conference on Flame Retardancy. Ed. Lewin, M. Business Communications Co., Stamford, CT. pp. 331–342.Search in Google Scholar

White, R.H., Dietenberger, M.A. (2010) Fire safety of wood construction. In: Wood Handbook – Wood as an Engineering Material. Forest Products Laboratory, U.S. Department of Agriculture Forest Service, Madison, WI. pp. 410–431.Search in Google Scholar

Winandy, J.E. (2013) State of the art paper: effects of fire-retardant treatments on chemistry and engineering properties of wood. Wood Fiber Sci. 45:131–148.Search in Google Scholar

Xiao, Z., Xu, J., Mai, C., Militz, H., Wang, Q., Xie, Y. (2016) Combustion behavior of Scots pine (Pinus sylvestris L.) sapwood treated with a dispersion of aluminum oxychloride-modified silica. Holzforschung 70:1165–1173.10.1515/hf-2016-0062Search in Google Scholar

Received: 2019-02-28
Accepted: 2019-08-30
Published Online: 2019-09-24
Published in Print: 2020-03-26

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