会议论文

Effect of High-intensity Microwave Explosion on Wood Permeability

中文

2013

63-66

第十四次全国木材干燥学术研讨会

第十四次全国木材干燥学术研讨会论文集

2013-11-01

北京

中国林学会<&wdkj&>中国林产工业协会

本校为第一机构

本文以人工林速生1-69杨为研究对象,采用MDF-N40型高强度微波木材改性设备进行微波爆破处理,研究了木材初始含水率、微波辐射功率和辐射时间对微波爆破提高木材渗透性的影响规律.结果表明:微波爆破能显著提高杨木横向渗透性.本实验条件下,3个不同因子最优水平试样的24h常压吸水增重量分别比素材高出51.1％、49.46％和52.89％,其合适的水平区间分别为25％-65％,10kw-20kw,60s-90s;合适的微波爆破处理,能使木材径向形成清晰可见宏观裂纹,纵向形成细小裂纹,木材横向渗透性得到极大改善。

　　The poplar wood was treated by high-intensity microwave explosion under different initial moisture content,radiant intensity and treating duration.The results showed that there was a dramatic increase in wood permeability when initial moisture content was applied in the range of 25%-65%, radiant intensity in the range of 10kw-20 kw, treating duwation in the range of 60s-90s.Compared with the control group, the 24-hour water absorption at atmospheric pressure of each specimen which was under optimum level of each factor increased by 51.1%, 4...