文献类型：期刊文献

英文题名：Surface degradation of wood scrimber under accelerated UV-hydrothermal cycling

作者：Zhao, Liyuan[1,2] Zhou, Guanwu[1,2] Zhou, Haibin[1,2] Pan, Dawei[1,2] Zhang, Yahui[1,2]

第一作者：Zhao, Liyuan

通信作者：Pan, DW[1];Zhang, YH[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Natl Engn Res Ctr Forest Biomass Low Carbon & High, Beijing 100091, Peoples R China

年份：2026

卷号：240

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20255219805244);Scopus(收录号：2-s2.0-105025685746);WOS:【SCI-EXPANDED(收录号:WOS:001662448800001)】；

基金：This work was supported by Fundamental Research Funds of CAF (Grant no. CAFYBB2021ZE004) .

语种：英文

外文关键词：Wood scrimber; Degradation mechanisms; Cyclic accelerated aging; Surface characterization

摘要：The degradation mechanisms of wood scrimber under multifactorial environmental stress remain incompletely understood. In this study, poplar wood scrimber was subjected to cyclic accelerated aging tests. Comparative analyses were performed on samples before and after treatment to assess key surface characteristics, including color change, roughness, wettability, micromechanical properties, and chemical composition. The research reveals the underlying degradation mechanisms responsible for surface deterioration, the decline in micromechanical performance, and the breakdown of chemical constituents in wood scrimber under combined UV and hydrothermal exposure. The results indicated that the accelerated aging process led to a darkening and roughening of the wood scrimber surface, accompanied by the loosening of its fibrous structure. Concurrently, the chemical components exhibited differential degradation rates. As the PF resin itself degraded, its supportive role in the cell wall was diminished, resulting in reductions of 41.3 % in HIT and 40.8 % in Er of the cell wall after 240 h of aging.