The influence of previous anti-blue-stain preservative treatments on the fixation of CC in spruce
M Van der Zee, W J Homan
Freshly cut and kiln dried spruce boards were treated with 4 different anti-blue stain preservatives (ABP). After a period of 10 days allowing the samples to dry and fixate, the samples were treated with CC (chromium, copper formulation) using a vacuum pressure cycle. After impregnation the wood was steam fixed. A submersion leaching test showed differences in the leachable quantity of copper and chromium. When related to the retention of both salts after impregnation, no differences could be found between samples previously treated with anti-blue-stain preservatives and untreated samples. However, the retention of CC diminished significantly by application of quaternary ammonium compounds.
Keywords: ANTI BLUE STAIN PRESERVATIVE; CC-PRESERVATIVES; QUATERNARY AMMONIUM SALTS; LEACHING OF COPPER AND CHROMIUM; RETENTION
Conference: 97-05-25/30 Whistler, British Columbia, Canada