A Preliminary Report on the Properties of Engineered Wood Composite Panels Treated with Copper Naphthenate
J W Kirkpatrick, H M Barnes
This paper reports on our preliminary investigation of the properties of randomly oriented strandboard which had waterborne or powdered copper naphthenate (CuN) incorporated into the board during manufacture. When compared to zinc borate-treated controls (ZnB), the mechanical properties of strandboard (MOR, MOE, work-to-maximum load, internal bond strength) were not adversely affected by treatment with either form of copper naphthenate. In general, values for mechanical properties followed the trend untreated controls > waterborne CuN = powdered CuN > ZnB. Water absorption and dimensional properties followed a similar trend. This preliminary study suggests that CuN is a viable alternative treatment for engineered wood composites.
Keywords: Copper naphthenate, strandboard, static bending, internal bond strength, thickness swelling, water absorption, linear expansion, zinc borate, modulus of rupture, modulus of elasticity, southern pine