Preservative treatment evaluation of red maple and yellow-poplar with ACQ-B

• Published in: Forest products journal Vol. 47; no. 4; pp. 50 - 54
• Main Authors: Slahor, J.J. (West Virginia University, Morgantown, WV.), Hassler, C.C, DeGroot, R.C, Gardner, D.J
• Format: Journal Article
• Language: English
• Published: Madison, WI Forest Products Society 01.04.1997
• Subjects: ACER RUBRUM; AMMONIACAL COPPPER QUARTENARY COMPOUND; Applied sciences; BOIS DE COEUR; CONSERVACION DE LA MADERA; CONSERVANTES DE LA MADERA; Degradation and preservation; DURAMEN; Exact sciences and technology; HEARTWOOD; LIRIODENDRON TULIPIFERA; PENETRATION; Polymer industry, paints, wood; PRESERVATION DU BOIS; PRESION; PRESSION; PRESSURE; PRESSURE TREATMENT; PRODUIT DE PRESERVATION DU BOIS; RETENTION; TEMPERATURA; TEMPERATURE; VACUUM; Wood; WOOD PRESERVATION; WOOD PRESERVATIVES; Wood. Paper. Non wovens; Quaternary ammonium compound; Impregnation; Wood preservation; Hardwood; Copper Compounds; Experimental study; Protection; Under pressure
• ISSN: 0015-7473

This project sought to determine if there was a difference in treatment results of selected refractory hardwood species by comparing a heated solution of ammoniacal copper quaternary compound-Type B (ACQ-B) to an ambient solution of ACQ-B using three pressure period durations. Nominal 2-by-4 samples, 6 inches long, of red maple and yellow-poplar heartwood were end-sealed and vacuum/pressure treated with a 1 percent active ingredient solution of ACQ-B. Duration of pressure was varied as well as temperature of solution. Measurements were taken of minimum and maximum penetration, percentage of cross-sectional area penetrated, and retention of preservative as determined by x-ray fluorescence spectroscopy analysis (ASOMA). Statistical analysis indicated improved penetration into yellow-poplar heartwood when the preservative solution was heated. Red maple results were inconclusive in that there was difficulty in differentiating heartwood and confirming the refractory nature of the species