Preparation and Characterization of Silicate Wood Adhesive Modified with Ammonium Stearate

Author:

Zhang Xin Li1,Zhang Hong Hui2,Wu Yi Qiang1,Hu Yun Chu1

Affiliation:

1. Central South University of Forestry and Technology

2. School of Applied Chemistry and Environmental Engineering, Xinyang Vocational and Technical College

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.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference16 articles.

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2. V.A. Voitovich: Polymer Series D—Glues and Sealing Materials, Vol. 2 (2009), p.187.

3. CanShan Jiao, Zhengping Wang and Weijun Zhang: Chemical and Adhesion (in Chinese), Vol. 4 (1999), p.203.

4. S.S. Kouassi, M.T. Tognonvi and J. Soro: Journal of Non-Crystalline Solids, Vol. 357 (2011), p.3013.

5. XianGuang Zeng, Xinyue Li and QiaofengYang: Electroplating & Finishing (in Chinese), Vol. 29 (2010), p.51.

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