Effects of Wood Species and Dimensions on Cooper Leaching from ACQ-D Treated Wood
|School||Beijing Forestry University|
|Course||Wood Science and Technology|
|Keywords||Amine dissolved copper quaternary amine salt - D type (ACQ-D) Species Specimen Specifications Copper Outflow|
This test uses The full cell two specifications (19mm × 19mm × 450mm, 19mm × 19mm × 19mm) Pinus sylvestris the ( of Pinus sylvestris Linn.var.mongolica Litv . ) , Fir ( Cunninghamia lanceolata Hook ) sapwood were two different concentrations (0.5% , 1.1%) of the amine was dissolved copper quaternary ammonium wood preservative (ACQ-D) in a vacuum - pressure infusion treatment, respectively, after the high temperature and humidity ( 70 ° C , relative humidity of 80 % , 24h) hot and dry ( 110 ° C , 24h) and hot water ( 100 ° C , 15h ) after the treatment process accelerated the copper specimens fixed rate and the loss of the test the expedition species and tested material specifications on the loss of copper in ACQ-D treated wood the impact . The results of this study are summarized as follows : 1.ACQ - D treated wood of copper in the bleed by the specifications of the test material , the holding amount of the copper , the composition of the different tree species composition, surface area to volume ratio of the test materials , and various post-processing method , etc. factors. The specifications of the treated wood is to determine the impact of the loss of the decisive factors of the test material in copper , in general , smaller gauge copper loss in treated wood is much more serious than the larger gauge copper loss in treated wood . 2 . Effect of the loss of species of copper in ACQ-D treated wood will be due to the different methods of post-processing there are some differences , without any post-processing conditions , extractives of Pinus sylvestris more help to improve the anti- drain resistance of the treated wood , and by a certain post-processing , the the fir more lignin component , can be provided for processing the material copper more fixing places , so that Fir treated wood can be obtained a better fixing effect . 3 using X-ray fluorescence spectroscopy (XRF) and atomic absorption spectrophotometer (AAS) determination of the active ingredient in ACQ-D treated wood copper two methods , the difference of measurement results , but the the XRF method detection fast , analytical accuracy higher and easier operation .