文献类型：期刊文献

英文题名：ZnP-H2Im glass for flame retardant wood: In situ vitrification and synergistic mechanisms

作者：Zhang, Zhipeng[1] He, Jinrong[1] Wu, Yuzhang[1] Luo, Jiaming[1] Qu, Wei[1]

第一作者：Zhang, Zhipeng

机构：[1] Research Institute of Wood Industry, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China

年份：2025

卷号：524

外文期刊名：Chemical Engineering Journal

收录：EI(收录号：20254319354797);Scopus(收录号：2-s2.0-105018957294)

语种：英文

外文关键词：Carbonization - Flame retardants - Inert gases - Melting - Semiconducting glass - Vitrification - Wood

摘要：A novel method for enhancing wood flame retardancy by in situ vitrifying ZnP-H2Im coordination polymer within wood was developed. ZnP-H2Im crystals were synthesized via double impregnation and then converted into a continuous and largely continuous glass film that fully coats the wood fibers using melting-quenching. The vitrification process was confirmed by SEM-EDS, XRD, and DSC. The cell wall thickness of the modified wood (ZIW39 glass) was 58.96 % greater than that of untreated wood. The plastic and glass transition peaks of ZnP-H2Im in the modified wood were detected. The heat treatment caused the ZnP-H?Im to melt, as evidenced by the disappearance of its characteristic XRD peaks. The molten phase permeated the cell walls, forming a glass film that increased the cell wall thickness. The flame-retardant mechanism involves forming a physical barrier, melting to absorb heat, generating phosphoric acid to catalyze carbonization, and releasing inert gases. As a result, the total heat release in 300 s of ZIW39 glass was reduced by 72.38 % and the limiting oxygen index (LOI) was increased by 69.78 %. Notably, ZIW39 glass exhibited an exceptionally low leaching rate of only 2.65 % after 120 h of immersion. This approach, highlighting in situ vitrification and multiple flame-retardant mechanisms, overcomes limitations of conventional flame retardants. It offers an efficient, eco-friendly strategy for wood modification with industrial potential. ? 2025 Elsevier B.V.