文献类型：期刊文献

英文题名：Enhancing heat modification efficiency of Chinese fir wood through fly ash impregnation: A comprehensive evaluation using time-temperature superposition and cluster analysis

作者：Zhan, Tianyi[1] Jiang, Tianle[1] Shi, Tao[1] Gao, Yulei[3] Peng, Hui[1] Li, Zhu[2] Jiang, Jiali[2] Lyu, Jianxiong[1]

第一作者：Zhan, Tianyi

通信作者：Zhan, TY[1];Lyu, JX[1]

机构：[1]Nanjing Forestry Univ, Coll Mat Sci & Engn, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Ningbo Univ, Pan Tianshou Coll Architecture Art & Design, Ningbo 315211, Peoples R China

年份：2024

卷号：425

外文期刊名：CONSTRUCTION AND BUILDING MATERIALS

收录：;EI(收录号：20241515868812);Scopus(收录号：2-s2.0-85189539868);WOS:【SCI-EXPANDED(收录号:WOS:001215974900001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (2023YFD2200501) , the National Natural Science Foundation of China (No. 32171705) , and Zhejiang Province Public Welfare Technology Application Research Project (LGG22C160002) .

语种：英文

外文关键词：Wood; Fly ash impregnation; Heat modification; Catalytic degradation; Time -temperature superposition; Cluster analysis

摘要：Catalytic degradation via fly ash impregnation (Im) has proven effective in reducing the heat modification (HM) temperature required for wood. To accurately gauge the intensity of HM on wood following Im, the physiomechanical properties of Im-HM treated wood were investigated across various treatment conditions (temperature: 80-140 degrees C, duration: 1-4 h, and fly ash concentration: 2-8%), and compared them to conventional HM (CoHM) wood. Two mathematical methods (time-temperature superposition and cluster analysis) were employed to elucidate the relationships between treatment conditions and resulting properties. Results indicated that ImHM treated wood exhibited comparable dimensional stability and visual appearance to CoHM wood, while retaining superior mechanical properties. The acid-catalyzed effect of Im-HM demonstrated significant dependence on treatment temperature, duration, and concentration, providing an avenue to regulate catalytic intensity. Employing the time-temperature superposition principle, master curves for weight percentage loss (WPL), modulus of elasticity (MOE) and anti-swelling efficiency (ASE) were constructed under a reference condition (80 degrees C and 2% concentration), covering processing duration up to 20 hours. These master curves facilitated understanding the relationship between temperature, duration and concentration when evaluating catalytic intensity. Cluster analysis, based on the physiomechanical properties of Im-HM and CoHM wood, offered a clear interpretation of HM intensity. Notably, Im-HM treatment at 140 degrees C for 4 hours with an 8% concentration exhibited HM intensity similar to CoHM treatment at 200 degrees C. Through the integration of timetemperature superposition and cluster analysis, this study assesses Im-HM intensity, providing a valuable reference for the industrial application of Im-HM treatment.