Preparation and Characterization of Silicate Wood Adhesive Modified with Ammonium Stearate

Abstract:

In order to improve the water resistance of silicate wood adhesive, a kind of silicate adhesive was prepared from water glass with silica as curing agent, and ammonium stearate as modifier. The chemical structure, surface morphology and thermal properties of the silicate adhesive were characterized by Fourier transform infrared spectrometer, scanning electron microscope, and thermo-gravimetric analyzer. As the two main measures of adhesion properties, the bonding strength and water resistance were also determined. The results showed that ammonium stearate was successfully introduced into the molecule structure of silicate, the silicate adhesive have good thermal stability in the range of 30~800 °C and the modified silicate adhesive had more smooth cured morphology. The bonding strength and 24h water absorption rate of poplar plywood glued by the silicate adhesive was 0.71 MPa and 22.81%, respectively, reaching the grade II of plywood performance's national standard.

• Periodical: Advanced Materials Research (Volumes 1033-1034)
• Pages: 1048-1053
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1033-1034.1048
• Online since: October 2014
• Authors: Xin Li Zhang, Hong Hui Zhang, Yi Qiang Wu*, Yun Chu Hu
• Keywords: Bonding, Bonding Strength, Inorganic Adhesives, Silicate, Wood Adhesive

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