文献类型：期刊文献

英文题名：The synthesis of DOPO-g-ESO and its effect on the properties of phenolic foam composites

作者：Ma, Yufeng[1] Gong, Xuanang[1] Zhang, Zixuan[1] Jia, Puyou[2] Wang, Chunpeng[2]

第一作者：Ma, Yufeng

通信作者：Ma, YF[1]

机构：[1]Nanjing Forestry Univ, Coll Mat Sci & Engn, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing, Peoples R China

年份：2021

卷号：9

期号：1

起止页码：1-10

外文期刊名：GREEN MATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000630074600001)】；

基金：The work was partially financially supported by the Youth Innovation Fund of Nanjing Forestry University (CX2016011) and Nanjing Forestry University High-Level (High-Educated) Talents Scientific Research Funds (GXL2014033). The authors would like to acknowledge their support for this research and the Analytical and Testing Center for the help with measurements.

语种：英文

外文关键词：biomass; mechanical properties; thermal properties

摘要：In order to improve the properties of phenolic foam (PF), 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was introduced into the structure of epoxidized soybean oil (ESO), and DOPO-grafted ESO (DOPO-g-ESO) was obtained to modify phenolic resin (PR) and to prepare modified PF (DEMPF). The structures of ESO and DOPO-g-ESO were verified by Fourier transform infrared spectroscopy and nuclear magnetic resonance. In comparison with ESO, DOPO-g-ESO shows slightly worse thermal stability; the initial decomposition temperature (Ti) and residual carbon (600 degrees C) decreased by 18.3 and 5.57%, respectively. DOPO-g-ESO-modified PR (DEMPR) shows a slightly higher decomposition temperature in comparison with PR. The carbon residues (600 degrees C) of DEMPR decreased with the increase in the DOPO-g-ESO/phenol (P) content. Moreover, with the increase in the DOPO-g-ESO/P content, the activation energies of DEMPR gradually increased, and the reaction orders were all non-integers. Compared with PF, when the dosage of DOPO-g-ESO/P was less than or equal to 10%, the mechanical properties of DEMPF improved and then deteriorated. However, the flame retardancy of DEMPF decreased slightly, but not too much. In addition, the cell sizes of DEMPF gradually increased. Using comprehensive analysis, the optimal dosage of DOPO-g-ESO/P was found to be about 10%.