腐朽材和健全材的碳氧含量及结晶度变化研究

本文分别对红松、白桦和黄波罗三个树种的腐朽材和健全材,用电子能谱仪和X射线衍射仪,测定了样品的氧碳含量和结晶度的变化,实验结果表明,腐朽材的相对氧含量上升,而结晶度下降。随腐朽程度的不同,碳氧含量的比例不断变化,在腐朽极为严重的情况下,氧的含量可能高于碳的含量。说明腐朽的主要机制是氧化过程,及结晶区破坏和结晶度下降。本文是木材腐朽检测的基础研究之一,为木材腐朽检测的研究提供基础数据和理论依据。

OXYGEN CARBON CONTENT AND CRYSTALLINITY CHANGED WITH TIMBER DECAYED

With electron spectrometer and x-ray diffractometer, the change of bats, the content of oxygen, carbon and crystallinity of samples are determined which seperately made up of the decayed timber and perfect timber of three kinds of trees--Pinus koraiensis, Betula Platyphylla Suk. Fhelledendron amurense. It has been found that the relative content of decayed timber is larger but the crystallinity is lower. The proportion of the content of oxygen and carbon changes with the decay degree. Generally, the content of oxygen for decayed timber is higher, but the content of carbon is lower. When timber is decayed seriously, it is possible that the content of oxygen would be larger than that of carbon. It can be that the important decay mechanism is the oxidizing process, crys tallinity foundmental descend, decomposition of crystallized region. This paper is one of research of determination of timber decay, and supplies the basic datum and theory basis.