CCA防腐处理对木材表面特性影响的探讨

Study of the Surface Characteristics of CCA TreatedPoplar Wood

本文介绍用ESR,ESCA,IR等仪器对经CCA处理的意大利杨I_(214)(P.XeuramricanaDode I_(214)) 材的表面特性进行探讨,指出经CCA处理后的表面发生一定程度的氧化,产生一定量的自由基。而这种氧化作用却有利于抑制表面的光化学降解,即使在较强的紫外光幅射下,它的ESR,ESCA,IR等谱图变化都不大。而素材经光照后,这三种谱图均有较大的变化,这就是说CCA处理后的木材耐侯性得到了增强。

The surface characteristics of CCA treated poplar wood (P. Xeuramricana Dode 1214) were investigated by means of ESR, ESCA and IR,to reveal when oxidization bccurred to the wood surface and a member of free radicals could still be found. The initiation of free radicals by UV radiation was found to be not very effective to the treated wood surface. On the other hand, the effects of initiation of free radicals by the same treatment on the untreated wood surfaces were very prominent. This phenomienon could be attributed to the CCA coating on the surfaces, which might be beneficial to the resistance against weathering.