文献类型：期刊文献

英文题名：Radial cracks in Castanopsis hystrix wood and its dimensional stability improvement by resin-impregnated modification

作者：Meng, Surong[1] Su, Yingying[1] Huang, Anmin[1] Sun, Bailing[1]

第一作者：Meng, Surong

通信作者：Sun, BL[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Qing Long Qiao,Dong Xiao Fu 1, Beijing 100091, Peoples R China

年份：2023

外文期刊名：HOLZFORSCHUNG

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001103893400001)】；

基金：We would like to express our gratitude for assistance on language modification by Mr. Zhang Shifeng at Beijing Forestry University.

语种：英文

外文关键词：Castanopsis hystrix wood; radial cracks; resin-impregnated modification; dimensional stability; DVS

摘要：This study investigated the characteristics of radial cracks in Castanopsis hystrix wood and evaluated its dimensional stability after impregnation with low-molecular-weight polyacrylate (PA), melamine-urea-glyoxal (MUG), and melamine-urea-formaldehyde (MUF) resins. The physical properties were examined by dimensional stability measurements, dynamic vapor sorption (DVS) analysis, and scanning electron microscopy (SEM). The results showed that radial cracks were easily produced in the transverse section of untreated wood during drying. The surfaces of the radial cracks exhibited an even and clean structure without fluffs on the pair of surfaces, and cracks spanned 4-5 annual rings. The resin-impregnated wood showed no radial cracks on its transverse surface. C. hystrix wood modified with MUG and MUF exhibited a higher weight percentage gain (WPG) than wood modified with the same concentration of PA resin. The resin-impregnated C. hystrix wood also showed reduced anisotropy and improved dimensional stability. The SEM images of the modified wood showed that the wood pits and cells were filled with resin, while the cell wall surfaces were covered with a layer of resin.