蒸汽爆破开启落叶松木材细胞通道  

Opening cell pathways of larch wood by steam explosion

作　　者：夏金尉[1,2] 张耀丽[1] 蔡家斌[1] 

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037 [2]苏州市产品质量监督检验所,江苏苏州215132

出　　处：《福建农林大学学报（自然科学版）》2013年第5期543-547,共5页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：国家自然科学基金资助项目(31070493);江苏高校优势学科建设工程资助项目(PAPD);国家林业局948资助项目(2011-4-12)

摘　　要：采用5种蒸汽爆破处理(压力0.2 MPa,爆破重复10次;压力0.3 MPa,爆破分别重复5次、10次和15次;压力0.4MPa,爆破重复10次),结果表明:压力0.4 MPa、爆破10次处理的木材细胞闭塞纹孔开启程度最大,开启率为38.5%;压力0.3 MPa、爆破15次处理的开启率为31.2%;压力0.3 MPa、爆破10次处理的开启率为28.5%;压力0.3 MPa、爆破5次处理的开启率为18.3%;压力0.2 MPa、爆破10次处理的开启率仅为13.9%.落叶松木材具缘纹孔膜塞缘出现不同程度的断裂,闭塞纹孔变成非闭塞纹孔,开启了落叶松木材细胞液体流动通道.Larch lumber was treated by five different steam explosions such as 0.2 MPa pressure, 10 explosion times; 0.3 MPa pressure, 5, 10 and 15 explosion times; 0.4 MPa pressure, 10 explosion times. The results were as follows： under the treatment of 0.4 MPa, 10 times, opening percentage of aspirated pits in larch was maximum, reached 38.5% ; under the treatments of 0.3 MPa, 15 times, 0.3MPa, 10 times and 0.3 MPa, 5 times, the opening percentages were 31.2%, 28.5% and 18.3%, respectively. The minimum percentage of 13.9% was obtained under the treatment of 0.2 MPa, 10 times. It suggested that membranes were ruptured more or less, de-aspirated pits were achieved and water paths were unlocked by five treatments.

关 键 词：蒸汽爆破 闭塞纹孔 细胞通道 开启率 

分 类 号：S781.35[农业科学—木材科学与技术]