Effect of the Chemical Treatment on the Carbon Fixation of Wood

The objective of this study was to evaluate the effect of the chemical treatment on the carbon fixation of wood, including ammoniacal copper quats (ACQ) and Dricon. Tested specimens were respectively impregnated with ACQ solution at 0.5, 1, 2, 4, 6% w/w and with Dricon at 1, 2, 4, 6, 12% w/w. Fungal decay resistance and fire retardancy of the treated wood were evaluated according to ASTM standard showed less weight loss than the threshold retention of 2% and were also effective in resisting attack by brown fungus-Gloeophyllum trabeum. However, the threshold retention for weight loss of 2% against whiteD1413-99 (1999), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Results revealed that wood specimens of Cunninghamia lanceolata and Cryptomeria japonica with 0.5% ACQ fungus-Trametes versicolor was observed when Liquidambar formosana wood treated with 2% of ACQ. The effects of the increase in carbon retention and the reduction in the retention of carbon dioxide release in wood were significantly improved by treating with ACQ. The reaction mechanism of burning changed, when Cunninghamia lanceolata, Cryptomeria japonica and Liquidambar formosana were treated with Dricon, and better results in carbon retention and the reduction in the release retention of carbon dioxide for Dricon-treated wood were observed when treated with higher concentrations of chemicals.

本研究旨在评估化学处理对木材固碳性能的影响，所用处理药剂包括氨化铜季铵盐（ammoniacal copper quats, ACQ）与德莱康（Dricon）。测试试样分别经质量分数0.5%、1%、2%、4%、6%的ACQ溶液浸渍处理，以及1%、2%、4%、6%、12%的Dricon溶液浸渍处理。依照美国材料与试验协会（ASTM）标准ASTM D1413-99（1999）、热重分析（thermogravimetric analysis, TGA）及差示扫描量热法（differential scanning calorimetry, DSC），对处理后木材的抗真菌腐朽性能与阻燃性能进行评估。结果显示，当保留量阈值为2%时，试样质量损失更低，且可有效抵御褐腐菌密粘褶菌（Gloeophyllum trabeum）的侵蚀。然而，针对白腐菌彩绒革盖菌（Trametes versicolor），经2% ACQ处理的枫香木（Liquidambar formosana）可满足2%质量损失阈值的保留量要求。经ACQ处理后，木材的碳保留量提升与二氧化碳释放量降低的效果均得到显著改善。当采用Dricon对杉木（Cunninghamia lanceolata）、柳杉（Cryptomeria japonica）与枫香木进行处理时，木材的燃烧反应机制发生改变；且当药剂浓度较高时，经Dricon处理的木材在碳保留量提升与二氧化碳释放量降低方面表现更优。