The mechanisms of the liquid penetration of wood that based on the continuous observation of the liquid movement into the tracheid of softwood

为了弄清木材的液体渗透机理，对经不同预处理的扁柏、杉和北麻图木材进行了液体渗透试验。结果表明：1）液体渗透进入管胞的过程是由扩散润湿转化而来的; 2）液体渗透进入管胞的过程是由扩散润湿转化而来的; 3）在10 ~ 20 kg/cm ^2的吸力范围内，液体进入管胞的速率发生显著变化。

To make clear the mechanisms of liquid penetration of wood, it is tested for the various pretreated samples of Hinoki, Sugi and Beimatu (ex. extraction in the hot water and the precompressive treatment and so on), and the liquid movement are observated by the CCD camera system on the reflecting optical microscope.Results obtained are as follow :1)The liquid penetration of Hinoki wood become to be translated by the diffuse wetting.2)The liquid penetration into the tracheid is acted by the repetition of the progress and the stoppage.3)The rate of the liquid movement into the tracheid under the aspiration occurs remarkably change in the range from the force of 10kg/cm^2 to 20kg/cm^2.