| Crystallity Change of Compressed Poplar Wood Treated by PF Resin |
| |
| 作者姓名： | ZHOU Haibin LIU Junliang JIANG Zehui Research Institute of Wood Industry Chinese Academy of Forestry Beijing P.R. China |
| |
| 作者单位： | ZHOU Haibin LIU Junliang JIANG Zehui Research Institute of Wood Industry，Chinese Academy of Forestry Beijing 100091，P.R. China |
| |
| 摘 要： | INTRODUCTIONWith the implementing of the Natural ForestryProtection policies in China, the plantation forestry willplay a much larger part in meeting the demand for wood.But the plantation wood, especially Poplar and Fir, havecommon properties of soft structure, low density andpoor processing. Generally speaking, these propertiescan be evidently improved by compressing. MasafumiInoue et al. (1991a, 1991b, 1990) had studied thesurface compression of coniferous wood. Their studiesshowed …
|
| 关 键 词： | 树脂 森林副产品 X射线衍射 压缩 |
Crystallity Change of Compressed Poplar Wood Treated by PF Resin |
| |
| ZHOU Haibin LIU Junliang JIANG Zehui Research Institute of Wood Industry,Chinese Academy of Forestry Beijing ,P.R. China.Crystallity Change of Compressed Poplar Wood Treated by PF Resin[J].中国林业科技(英文版),2006,5(1):8-13. |
| |
| Authors: | ZHOU Haibin LIU Junliang JIANG Zehui |
| |
| Institution: | Research Institute of Wood Industry Chinese Academy of Forestry Beijing 100091. P.R. China |
| |
| Abstract: | This study investigated the effect of weight percent gain (WPG) and compression set on thecrystallity of compressed poplar wood. Tests were conducted to determine the mechanism of compressedwood set. The samples of I-72 Poplar were treated with a PF resin of water-solubility and low molecularweight. Then the air-dried samples were hot-pressed to a certain thickness. Finally the specimens wereobtained from the compressed samples and scanned with an X-ray diffractometer. Results show that beforepress the crystallity of the inner layer is lower than that of the outer layer, and at press the difference of thecrystallity between the outer layer and the inner layer will slowly disappear and finally the crystallity of theinner layer exceeds that of the outer layer; with the increasing compression set the crystallity decreases, andthere is a big decrease; the crystallity difference between two layers happens because of compression setgradient, WPG difference or the joint effect. |
| |
| Keywords: | crystallity PF resin plantation forest X-ray diffractometer WPG compression set permanent set Poplar (Poplar euramaricana cv I-72) |
| 本文献已被 CNKI 维普 等数据库收录！ |
