文献类型：期刊文献

英文题名：ANALYSIS OF WOOD PORE CHARACTERISTICS WITH MERCURY INTRUSION POROSIMETRY AND X-RAY MICRO-COMPUTED TOMOGRAPHY

作者：Peng, Li Min[1] Wang, Dong[1] Fu, Feng[1] Song, Bo Qi[1]

第一作者：彭立民

通信作者：Peng, LM[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China

年份：2015

卷号：60

期号：6

起止页码：857-864

外文期刊名：WOOD RESEARCH

收录：;EI(收录号：20161102089379);Scopus(收录号：2-s2.0-84959915420);WOS:【SCI-EXPANDED(收录号:WOS:000368315300001)】；

基金：The authors gratefully acknowledge the support of the state forestry administration of China "948 "project (High performance wood-based composite sound absorption material preparation technology import, 2013-4-15).

语种：英文

外文关键词：Mercury intrusion porosimetry; X-ray micro-computed tomography; pore size distribution; ink-bottle effect

摘要：The size and distribution of wood pores greatly influence its properties like density, thermal conductivity and permeability as well as acoustical property. Different techniques were developed to measure wood pore characteristic parameters. In this paper, mercury intrusion porosimetry (MIP) and X-ray Micro-computed tomography (mu CT) were used to characterize pore characteristics of Populus L. woods. Pore size distribution and total porosity results were achieved. As for MIP measurement, the pore size of Populus L. woods ranged from 50 to 400 mu m. The pore volume in the range of 313-2513.7 nm and 8-400 mu m for 0.23 g.cm(-3) sample was significantly larger than that of 0.40 g.cm(-3) sample, but the pore volume in the range of 2513.7-7878 nm was less. And the pore distribution tendency for mu CT measurement between 2.84 similar to 36.86 mu m was similar with MIP. According to the results of mu CT and intrusion extrusion curves hysteresis regions of MIP, the existence of ink-bottle effect of MIP was confirmed. So the MIP measured pore-size distribution of micro-voids was larger than actual value.