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Are Epoxy-Wood Bonds Durable Enough?

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An important aspect of any adhesive bond is that the bond maintains its integrity during its end use. Epoxies form highly durable bonds with many substrates but are usually not considered capable of forming completely durable bonds with wood by standard accelerated tests. However, epoxies are sold for wood boat construction, and some data have indicated that epoxies can have sufficient exterior durability for general use in wood products. This conflicting information raises an important question. Are the reported discrepancies caused by changes in epoxy–wood bond formulations or in the use of different durability test methods? Examination of these data.