文献类型：期刊文献

英文题名：Determination of Moisture Content and Shrinkage Strain during Wood Water Loss with Electrochemical Method

作者：Fu, Zongying[1] Wang, Hui[2] Li, Jingpeng[3] Lu, Yun[1]

第一作者：付宗营

通信作者：Lu, Y[1]|[a000547dbdc9826482af5]卢芸;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Natl Forestry & Grassland Adm, Key Lab Wood Sci & Technol, Beijing 100091, Peoples R China;[2]Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, Beijing 100193, Peoples R China;[3]China Natl Bamboo Res Ctr, Key Lab High Efficient Proc Bamboo Zhejiang Prov, Hangzhou 310012, Peoples R China

年份：2022

卷号：14

期号：4

外文期刊名：POLYMERS

收录：;EI(收录号：20220811691063);Scopus(收录号：2-s2.0-85124914803);WOS:【SCI-EXPANDED(收录号:WOS:000765118500001)】；

基金：FundingThis study was financed by a Grant-in-aid for scientific research from the Youth Program of National Natural Science Foundation of China (Grant No. 31800478) and the National Natural Science Foundation of China (Grant No. 31870535 and 32122058).

语种：英文

外文关键词：electrochemical method; moisture content; shrinkage strain; wood water loss

摘要：Moisture content and shrinkage strain are essential parameters during the wood drying process. The accurate detection of these parameters has very important significance for controlling the drying process and minimizing drying defects. The presented study describes an electrochemical method to determine wood moisture content and shrinkage strain during drying, and the accuracy of this method is also evaluated. According to the results, the electrical resistance of the samples increased with the decrease in wood moisture content. As the moisture content changed from 42% to 12%, the resistance increased from 1.0 x 10(7) omega to 1.2 x 10(8) omega. A polynomial fitting curve was fitted with a determination coefficient of 0.937 to describe the relationship between moisture content and electrical resistance. In addition, both the shrinkage strain and resistance change rate increased with the decrease in wood moisture content, especially for the moisture content range of 23% to 8%, where the shrinkage strain and resistance change rate increased by 4% and 30%, respectively. The shrinkage strain increased exponentially with the increase in the resistance change rate; thereby, an exponential regression equation was proposed with a determination coefficient of 0.985, expressing the correlation between the two. This demonstrates the feasibility of the electrochemical method for measuring wood moisture content and shrinkage strain.