Industrial kiln drying and its effect on microstructure, impregnation and properties of Scots pine timber impregnated for above ground use. Part 1. Effects of initial, final dryings and preservative on impregnation and timber quality

摘要: Scots pine (Pinus sylvestris L.) planks were dried in industrial progressive, conventional batch and high temperature kilns. The quality of drying was assessed by measuring the final moisture content its gradient, deformations, checks internal stress planks. timber rearranged three charges impregnated an autoclave with copper-based preservatives for above ground use (class AB): Kemwood ACQ 1900, Tanalith E Wolmanit CX-8. determined after impregnation divided into two charges; first kiln while second air dried. Assessment product carried out as initial drying. penetration measured well. data analysed a statistical mixed model to ascertain effects on quality. A strong relationship found between ensured similar regarding bow, twist checks, but provided significantly better (94.4% total sapwood area) tested. It is suggested that changes wood structure could be provoked during drying, thus improving subsequent secondary progressive hatch led preservatives; lower comment, less surface than drying.Wolmanit CX-8 penetrated (96.3%) 1900 (83.5 88.5 %,respectively). achieved best content, gradient cup. showed some deformations had highest gradient.