酶法提高木材渗透性的研究

以工农业废弃物为原料,借固体发酵法制备的果胶酶和纤维素酶,对云杉、臭松和柞木等试材进行酶法处理,可以扩大木材中液体流动的通路,提高其渗透性。详细探讨了酶活性大小、作用时间和各种试材渗透性之间的关系,检验了酶处理材对CCA水溶性防腐剂的吸收量,并以枕木为对象,作了枕木的酶法处理以及吸油量比较。在试验条件下,木材渗透性最高可提高90％以上,对防腐油的吸收量可增加16％以上。

Enzyme Treatment for Improving Wood Permeability of Preservatives

Methods of cultivating pectolase and cellulase on crop residues/wastes were developed by means of a solid-state fermentation process. Wood samples of spruce, fir and oak were treated with water containing these enzymes, in order to investigate the effectiveness of enhancing wood permeability for CCA solutions in terms of penetrability and retention. The relation between wood permeability, enzyme activity and treating-time were also investigated. Some enzyme-treated and non-treated railway ties were pressure-impregnated with coal-tar creosote in order to compare their differences in oil retention. The highest permeabilities of treated wood would increase 90％ more than those of untreated ones, under test conditions with oil retention of more than 16％.