Abstract
Water glass (WG) is an inorganic binder with excellent fire resistance in porous materials but has limited application to wood bonding. In this work, modified WG adhesive was developed and the effect of modification on the properties of adhesive and particleboard bonded with it was investigated. The bonding strength of WG adhesives increased by the modification with boric acid and aminofunctional silane. Stable siloxane linkage can lead to enhanced bonding. Particleboards with modified WG were manufactured with a target density of 750 kg m−3. The silane was selected as the best modifier; it was the only one to meet the requirements of EN 312 (Type 2). The reaction of amino groups onto the surface of wood was confirmed by Fourier-transform infrared spectrum. All particleboards produced with WG adhesives showed resistance to fire comparable to those with urea formaldehyde in the combustion test for 30 min. As a result of this investigation, WG modified with silane could be a desirable alternative to current synthetic adhesives for wood composites and fire resistance application.
Similar content being viewed by others
References
Böschel D, Roggendorf H (2002) Water-based sodium borosilicate sols and their gelation-characterisation by viscosimetry, UV/VIS- and infrared spectroscopy. J Sol-Gel Sci Technol 25:191–200
Cho EB, Mandal M, Jaroniec M (2011) Periodic mesoporous benzene—silicas prepared using boric acid as catalyst. J Mater Chem 23:1971–1976
Deppe HJ, Ernst K (2000) Taschenbuch der Spanplattentechnik (Pocket book on particleboard technique) (In German). DRW-Verlag, Weinbrenner
Engler R (1974) Lösliche Silicate (Soluble silicates) (in German). Seifen-Öle-Fette-Wachse 100:207–212
Furuno T, Imamura Y (1998) Combinations of wood and silicate. Part 6. Biological resistances of wood-mineral composites using water glass-boron compound system. Wood Sci Technol 32:161–170
Furuno T, Uehara T, Jodai S (1991) Combinations of wood and silicate, 1: impregnation by water glass and applications of aluminum sulfate and calcium chloride as reactants. J Jpn Wood Res Soc 37:462–472
Furuno T, Shimada K, Uehara T, Jodai S (1992) Combination of wood and silicate, 2: wood–mineral composites using water glass and reactants of barium chloride, boric acid, and borax, and their properties. J Jpn Wood Res Soc 38:448–457
Gill P (1996) Silicate-dextrin adhesive compositions. US Patents, US5571316 A
Hagens RG, McDonald M, Millard W (2000) Adhesive compositions for corrugated boxes. US6056816 A, US Patents
Liu JG, Gong GP, Yan CW (2006) Enhancement of the erosion–corrosion resistance of Dacromet with hybrid SiO2 sol–gel. Surf Coat Technol 200:4967–4975
Mai C, Militz H (2004) Modification of wood with silicon compounds. Treatment systems based on organic silicon compounds—a review. Wood Sci Technol 37:453–461
Obut A, Girgin I (2006) Preparation of sodium borosilicates using sodium silicate and boric acid. J Sol-Gel Sci Technol 39:79–83
Ogiso K, Saka S (1993) Wood-inorganic composites prepared by sol–gel process, 2: effects of ultrasonic treatments on preparation of wood-inorganic composites. J Jpn Wood Res Soc 38:301–307
Omura S, Kawazoe Y, Uemura D (2017) Development of a novel adhesive composed of all-natural components. Int J Adhes Adhes 74:35–39
Peng P, Zhou X, Ma J (2011) Water glass compound starch used as surface sizing agent to improve the strength of linerboard. BioResource 6:4158–4167
Petri EM (2007) Handbook of adhesives and sealants. McGraw-Hill, New York
Qiao X, Jiang W, Sun K (2005) Reinforced thermoplastic acetylated starch with layered silicates. Starch 57:581–586
Rashid I, Omari MHA, Leharne SA, Chowdhry BZ, Badwan A (2012) Starch gelatinization using sodium silicate: FTIR, DSC, XRPD, and NMR studies. Starch 64:713–728
Richter C (1993) A new approach to production of low-density materials made of wood and annuals. Holz Roh Werkst 51:235–239
Rojo E, Alonso MV, Del Saz-Orozco B, Oliet M, Rodriguez F (2015) Optimization of the silane treatment of cellulosic fibers from eucalyptus wood using response surface methodology. J Appl Polym Sci 132:2198–2204
Saka S, Tanno F (1996) Wood-inorganic composites prepared by the sol–gel process. VI. Effects of a property-enhancer on fire-resistance in SiO2–P2O5 and SiO2–B2O3 wood-inorganic composites. J Jpn Wood Res Soc 42:81–86
Samaržija-Jovanović S, Jovanović V, Konstantinović S, Marković G, Marinović-Cincović M (2011) Thermal behavior of modified urea–formaldehyde resins. J Therm Anal Calorim 104:1159–1166
Sándor M, Nistor C, Szalontai G, Stoica R, Nicolae C, Alexandrescu E, Fazakas J, Oancea F, Donescu D (2016) Aminopropyl-silica hybrid particles as supports for humic acids immobilization. Material 9:34
Sarmento VHV, Schiavetto MG, Hammer P, Benedetti AV, Fugivara CS, Suegama PH, Pulcinelli SH, Santilli CV (2010) Corrosion protection of stainless steel by polysiloxane hybrid coatings prepared using the sol–gel process. Surf Coat Technol 204:2689–2701
Scheiding W (2001) Wasserglas als Bindemittel für Holzfaserdämmstoffe (Waterglass as adhesive for insulation material) (in German). Holz Roh Werkst 59:327–333
Scheiding W (2002) Herstellung und Eigenschaften wasserglasgebundener Holzfaserdämmplatten (Manufacturing and properties of water glass bounded wood fibre insulation panels) (in German). Holz Roh Werkst 60:389–393
Seekamp H (1954) Die Klassifizierung der Brennbarkeit holzhaltiger Platten (Classification of the combustibility of wood-containing boards) (in German). Holz Roh Werkst 12:189–197
Stark J, Wicht B (1998) Anorganische Bindemittel: Zement–Kalk–spezielle Bindemittel (Inorganic binders: cement–chalk–special binding agents) (in German). Bauhaus-University, Weimar
Suleman Y, Hamid EMS (1997) Chemically modified soluble sodium silicate as an adhesive for solid wood panels. J Jpn Wood Res Soc 43:855–860
Taghiyari HR, Karimi A, Tahir PM (2015) Organo-silane compounds in medium density fiberboard: physical and mechanical properties. J For Res 26:495–500
Vrancken KC, Casteleyn E, Possemiers K, Van Der Voort P, Vansant EF (1993) Modelling of the reaction-phase interaction of γ-aminopropyltriethoxysilane with silica. J Chem Soc Faraday Trans 89:2037–2040
Xie Y, Hill CAS, Xiao Z, Militz H, Mai C (2010) Silane coupling agents used for natural fiber/polymer composites: a review. Compos Part A Appl S 41:806–819
Yamaguchi H (2005) Silicic acid/boric acid complexes as ecologically friendly wood preservatives. For Prod J 55:88–92
Acknowledgements
This work was supported by Fraunhofer-Gesellschaft and in part by the Basic Science Research Program (NRF-2015R1D1A4A01020121) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Lee, S., Thole, V. Investigation of modified water glass as adhesive for wood and particleboard: mechanical, thermal and flame retardant properties. Eur. J. Wood Prod. 76, 1427–1434 (2018). https://doi.org/10.1007/s00107-018-1324-x
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00107-018-1324-x