Treatability of refractory species with amine and amine/ammoniacal formulations of ACQ

This work was designed to quantify differences in preservative penetration of western US/Canadian tree species when treating with amine copper quat type D (ACQ-D) and a hybrid amine/ammoniacal copper quat formulation (ACQ-D+), at both ambient and heated temperatures. These results were compared to t...

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Bibliographic Details
Published in:Forest products journal 2002-10, Vol.52 (10), p.37-42
Main Authors: MORRIS, Paul I, MCFARLING, Shane M, ZAHORA, Andrew R
Format: Article
Language:English
Subjects:
Ammonia
Applied sciences
Copper
Degradation and preservation
Exact sciences and technology
Experiments
Forest products industry
Laboratories
Polymer industry, paints, wood
Preservatives
Retention
Statistical analysis
Temperature
Trees
Wood
Wood. Paper. Non wovens
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Summary:This work was designed to quantify differences in preservative penetration of western US/Canadian tree species when treating with amine copper quat type D (ACQ-D) and a hybrid amine/ammoniacal copper quat formulation (ACQ-D+), at both ambient and heated temperatures. These results were compared to that obtained with chromated copper arsenate (CCA). Both ACQ formulations allowed for improved penetration and retention of treated wood beyond that obtainable with conventional CCA treatments, either through the addition of ammonia, the use of heat, or both. The heated ACQ formulations and ACQ-D+ at ambient proved to be more effective than ambient temperature CCA at penetrating all four species. The heated ACQ-D+ formulation gave the best results, with both Pacific silver fir and western hemlock meeting the American Wood Preservers' Association standard for ground contact. White spruce and Douglas-fir treated with heated ACQ-D+ met the penetration requirement of the Canadian Standards Association decking standard.
ISSN:0015-7473
2376-9637