文献类型：期刊文献

英文题名：Low-melting-point alloy integration into puffed wood for improving mechanical and thermal properties of wood-metal functional composites

作者：Chai, Yuan[1] Liang, Shanqing[1] Zhou, Yongdong[1] Lin, Lanying[1] Fu, Feng[1]

第一作者：Chai, Yuan

通信作者：Liang, SQ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2020

卷号：54

期号：3

起止页码：637-649

外文期刊名：WOOD SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20201508398194);Scopus(收录号：2-s2.0-85082823839);WOS:【SCI-EXPANDED(收录号:WOS:000520804500001)】；

基金：This research is financially supported by the Special Fund of Chinese Central Government for Basic Scientific Research Operations in Commonwealth Research Institutes (No. CAFYBB2016MB001).

语种：英文

外文关键词：Compressive strength - Cracks - Energy dispersive X ray analysis - Melting point - Scanning electron microscopy - Wood - X ray diffraction analysis

摘要：To improve the mechanical and thermal properties of wood, a new functional composite was developed using an environmentally friendly low-melting-point alloy (LMA). Wood-metal functional composites (WMCs) were prepared by impregnating a puffed wood substrate with a LMA to form a LMA/wood network. The puffed wood was obtained by subjecting it to high-intensity microwave pretreatment. In-depth scanning electron microscopy coupled with energy-dispersive X-ray analysis showed the distribution of the LMA within the tracheid cells. The physical, mechanical, and thermal properties of the WMC were investigated. The weight percent gain (WPG), density, compressive strength parallel to grain (CS), thermal conductivity, and temperature unevenness of the WMC were found to increase with increasing crack number density in the puffed wood. The modulus of rupture (MOR) and the temperature alteration ratio were decreased for composites with an increased crack number density in the puffed wood. The WPG, density, CS, MOR, and thermal conductivity were increased by 1021%, 986.4%, 120%, 278.8%, and 2750%, respectively, from the unmodified wood to the optimal WMC. Such modified puffed wood with overall enhanced physical, mechanical, and thermal properties could be potentially utilized in applications like construction and heat-conductive flooring.