Wood as an Adherend. (Chapter 1 from Volume 7: Treatise on Adhesion and Adhesives).

摘要

Wood is a porous, permeable, hygroscopic, orthotropic, biological composite material of extreme chemical diversity and physical intricacy. Table 1.1 provides an overview of the many variables, including wood variables, that bear on the bonding and performance of wood in wood joints and wood-based materials. Of particular note is the fact that wood properties vary between species, between trees within a species, and even within a tree. Variability within a single species alone is enough to significantly challenge an adhesive to perform consistently and satisfactorily. In this chapter, we have attempted to describe wood and to explore how this complex biological material interacts with adhesives to affect the bonding process and the quality of the bonded joint or material. First, we will present a short review of the history connecting wood and adhesives.