马尾松木材的横向渗透性

分析和讨论了影响马尾松木材渗透性及其各向异性的机理。对马尾松木材的径向气体渗透性和弦向气体渗透性进行测量，发民尾松木材的径向和弦向渗透性是由边材向心材逐渐减小，并随着含水率的下降而升高。马尾松木材的径向渗透性大于弦向渗透性。

A Study on Transverse Permeability of Masson Pine Wood

Radial and tangential gas permeability of Masson pine wood were measured respectively in this paper.The results show that radial permeability and tangential permeability of masson pine decrease gradually from sapwood to heartwood and increase with moisture content decreasing and radial permeability is greater than tangential permeability.The effect mechanism on wood permeability and different properties are discussed and analyzed.The main flow paths in the radial direction are wood rays and horizontal resin canals,the flow path in the tangential direction is unaspirated pits on tracheids wall and cross fields. Permeability increases with moisture content decreasing due to void space increasing in wood.