Clausen Carol A, Green Frederick, Nami Kartal S
Nanoscale Res Lett. 2010 Jun 15;5(9):1464-1467. doi: 10.1007/s11671-010-9662-6.
Southern pine specimens vacuum-treated with nano-zinc oxide (nano-ZnO) dispersions were evaluated for leach resistance and UV protection. Virtually, no leaching occurred in any of the nano-ZnO-treated specimens in a laboratory leach test, even at the highest retention of 13 kg/m(3). However, specimens treated with high concentrations of nano-ZnO showed 58-65% chemical depletion after 12 months of outdoor exposure. Protection from UV damage after 12 months exposure is visibly obvious on both exposed and unexposed surfaces compared to untreated controls. Graying was markedly diminished, although checking occurred in all specimens. Nano-zinc oxide treatment at a concentration of 2.5% or greater provided substantial resistance to water absorption following 12 months of outdoor exposure compared to untreated and unweathered southern pine. We conclude that nano-zinc oxide can be utilized in new wood preservative formulations to impart resistance to leaching, water absorption and UV damage of wood.
对用纳米氧化锌（nano-ZnO）分散液进行真空处理的南方松样本进行了抗浸出性和紫外线防护评估。实际上，在实验室浸出试验中，即使在最高保留量为13 kg/m³的情况下，任何经纳米氧化锌处理的样本都未发生浸出现象。然而，经高浓度纳米氧化锌处理的样本在户外暴露12个月后出现了58%-65%的化学损耗。与未处理的对照相比，暴露12个月后，暴露和未暴露表面的紫外线损伤防护都明显可见。尽管所有样本都出现了干裂，但变色明显减少。与未处理和未风化的南方松相比，浓度为2.5%或更高的纳米氧化锌处理在户外暴露12个月后提供了显著的抗吸水性。我们得出结论，纳米氧化锌可用于新的木材防腐剂配方中，以赋予木材抗浸出性、吸水性和紫外线损伤的能力。
