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

通信作者：Qu, W[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R 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);WOS:【SCI-EXPANDED(收录号:WOS:001603039700002)】；

基金：This research was supported by Fundamental Research Funds (CAFYBB2024MA022) and National Natural Science Foundation China (No. 31890772).

语种：英文

外文关键词：Coordination polymer glass; ZnP-H2Im; Wood modification; Flame retardant mechanism

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-H2Im 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.