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为了研究木材压密化处理过程中交联试剂与木材的作用机理，以大青杨木材为试样，分离制得综纤维素、纤维素、α－纤维素、木质素和半纤维素，并分别与三聚氰胺－甲醛反应，测定了不同化学组分与交联剂作用的活性顺序及其分布。结果表明：三聚氰胺－甲醛与大青杨木材细胞壁组分的反应活性顺序为：木质素＞半纤维素＞综纤维素＞α－纤维素＞纤维素。还采用红外光谱（ＩＲ）对交联作用前后的综纤维素、纤维素和木质素的化学结构变化进行了分析，从而定性确定了交联化处理木材的主要官能团变化。关键词
In order to study the mechanism of action of cross-linking agent and wood in the process of wood densification, the holocellulose, cellulose, α-cellulose, lignin and hemicellulose Respectively with melamine - formaldehyde reaction, determination of the different chemical components and crosslinking agent activity sequence and its distribution. The results showed that the order of reactivity of melamine-formaldehyde and the cell wall components of P. przewalskii was: lignin> hemicellulose> holocellulose> α-cellulose> cellulose. The chemical structure changes of the holocellulose, cellulose and lignin before and after the crosslinking were also analyzed by infrared spectroscopy (IR) to qualitatively determine the main functional group changes of the crosslinked wood. Key words