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Official Journal of the Japan Wood Research Society

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Bondability of tropical fast-growing tree species III: curing behavior of resorcinol formaldehyde resin adhesive at room temperature and effects of extractives of Acacia mangium wood on bonding

Abstract

The effects of curing time at room temperature and methanol extracts from Acacia mangium on the curing behavior of resorcinol formaldehyde (RF) adhesive were examined by using the thermomechanical analysis spring method. For a specimen that was cured for 3 months at room temperature, the relative elasticity (E r) curve did not change to a hard glass state from room temperature to 200°C and the adhesive had cured completely. The initial temperature of the reactive zone for chemical and mechanical changes was 15° and 25°C higher than that for the control when 10 and 15 parts by weight methanol extract was added to the liquid adhesive, respectively. It appears that the extractives of A. mangium in RF adhesive interferes with the chemical cure of the adhesive. It is suggested that a combination of curing time and sweeping by methanol on the laminae surface can improve the bonding performance of A. mangium laminates bonded with RF at room temperature.

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Correspondence to Kinji Taki.

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Alamsyah, E.M., Yamada, M. & Taki, K. Bondability of tropical fast-growing tree species III: curing behavior of resorcinol formaldehyde resin adhesive at room temperature and effects of extractives of Acacia mangium wood on bonding. J Wood Sci 54, 208–213 (2008). https://doi.org/10.1007/s10086-007-0945-1

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  • DOI: https://doi.org/10.1007/s10086-007-0945-1

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