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Article: Laboratory manufacture of high moisture southern pine strandboard bonded with three tannin adhesive types.
- Article from:
- Forest Products Journal
- Article date:
- December 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Forest Products Society. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
Three types of tannin-based adhesives (wattle, quebracho, and radiata pine) were examined as binders for strandboard panels at two binder solids (10% and 13%) application levels. The strand moisture content (MC) was 6 percent or higher with an objective of having an out-of-press panel MC of 6 percent or higher. Characteristics (viscosity, stability, and gel time) of the tannin solutions and final tannin adhesives with cross-linking compounds are described. The strandboard panels were tested for internal bond, bending properties, durability after an accelerated aging test, and thickness swell after exposure to water. The preliminary panels bonded with 10 ...