作者机构：
[Luo Ying-she; Li Xian-jun; Ma Yuan-rong] Cent S Univ Forestry & Technol, Inst Rheol Mech & Mat Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Luo Ying-she] C;Cent S Univ Forestry & Technol, Inst Rheol Mech & Mat Engn, Changsha 410004, Hunan, Peoples R China.
会议名称：
第九届全国流变学学术会议
会议时间：
2008-09-28
会议地点：
长沙
会议论文集名称：
第九届全国流变学学术会议论文集
关键词：
WOOD;RHEOLOGY;creep;mechano-sorptive;CREEP;DRYING;stress;DEFORMATION;set;wood rheology;creep;mechano-sorptive creep;drying stress;deformation set
摘要：
By studying and summarizing the characteristics of wood rheology, the mathematic models of creep and mechano-sorptive creep of wood were analyzed. Rheology behaviors in process, especially drying stress and deformation set were discussed. Application of wood rheology in woodcraft process was elaborated and the research prospects and orientation were forecasted.
作者机构：
[Li Xian-jun] School of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;[Zhang Bi-guang; Li Wen-jun] College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
通讯机构：
[Xian-jun Li] S;School of Material Science and Engineering, Central South University of Forestry and Technology, Changsha, P.R. China
关键词：
wood;drying;microwave-vacuum;Masson pine
摘要：
Microwave-vacuum (MV) drying characteristics of plantation Masson pine (Pinus massoniana) were studied experimentally for various levels of microwave radiation time, initial moisture content (MC), vacuum level and wood thickness. The results show that the process of MV drying for wood can be significantly divided into a short accelerating rate drying period, a long constant rate drying period and falling rate drying period, and the second drying period can extend to levels of mean MC below the fiber saturation point. With the increase of initial MC and microwave radiation time, the drying rate of wood increases significantly. The vacuum level affects the drying rate in a slightly positive way. Within the range of 2 to 6 cm, the effects of sample thickness on the drying rate can be negligible.
作者机构：
Material Science and Engineering School, Central-South Forestry Science and Technology University, Changsha 410004, China;[Li W.-J.; Zhang B.-G.] College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China;[Li Y.-J.] School of Engineering, Zhejiang Forestry College, Lin'an 311300, China;[Li X.-J.] Material Science and Engineering School, Central-South Forestry Science and Technology University, Changsha 410004, China, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
通讯机构：
[Li, X.-J.] M;Material Science and Engineering School, , Changsha 410004, China
摘要：
The law of temperature distribution inside wood using Pinus massoniana as experimental material had been researched during microwave-vacuum drying for the first time. The results showed that, with a certain scope of radiation power (160 kW/m3) and wood thickness (60 mm), temperature distribution inside wood was uniform, and there was not regular temperature gradient along the direction of wood thickness; the inner temperature difference of wood presented a growing trend in the last period of drying; during microwave-vacuum drying, inner temperature difference of wood was caused by microwave field and the differences of dielectric characteristics among different locations in wet wood, and this kind of non-uniformity existed locally in wood.
作者机构：
[李贤军] Material Science and Engineering School, Central-South Forestry Science and Technology University, Changsha 410004, China;[李延军] School of Engineering, Zhejiang Forestry College, Lin'an 311300, China;[张璧光; 李文军; 李贤军] College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
通讯机构：
Material Science and Engineering School, Central-South Forestry Science and Technology University, China
