文献类型：期刊文献

英文题名：Biobased Phosphorus Siloxane-Containing Polyurethane Foam with Flame-Retardant and Smoke-Suppressant Performances

作者：Wang, Shibo[1,2] Wang, Siheng[1] Shen, Minggui[1] Xu, Xu[2] Liu, He[1] Wang, Dan[1] Wang, Hongxiao[1] Shang, Shibin[1]

第一作者：Wang, Shibo

通信作者：Liu, H[1];Wang, D[1];Xu, X[2]|[a000598870cdaa2acac5b]王丹;

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forestry Prod,Natl Forestry & Grass, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Key Lab Biomass Energy & Mat,Key Lab Chem Engn Fo, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn,Electron Microscope Lab, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Nanjing 210037, Jiangsu, Peoples R China

年份：2021

卷号：9

期号：25

起止页码：8623-8634

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20212710589363);Scopus(收录号：2-s2.0-85109004627);WOS:【SCI-EXPANDED(收录号:WOS:000669547700029)】；

基金：This work was supported by the National Key Research and Development Program of China (2018YFD0600402) and National Natural Science Foundation of China (32071708).

语种：英文

外文关键词：Fire-resistant materials; Smoke suppression; DOPO; Rosin; Biomass

摘要：Rigid polyurethane foam (RPUF) is one of the most widely used construction materials, but it is flammable and releases toxic smoke during combustion. In this study, a novel, synergistic-effect flame retardant (FPASO-DOPO) was synthesized by the Atherton-Todd reaction of 9,10-dihydro-9-oxa-10-phosphaphenan- threne-10-oxide (DOPO) with fumaropimaric acid-based siloxane (FPASO). The obtained FPASO-DOPO was then introduced into the cross-linking network of an RPUF by chemical bonding. The flame retardancy was enhanced by the synergistic effect of phosphorus and silicon in the FPASO-DOPO, which captured the free radical in the gaseous phase and formed a compact silica-rich char layer in the condensed phase. More importantly, the incorporation of FPASO-DOPO not only increased the limiting oxygen index from 17.0% to 26.1% but also reduced the total smoke release by 17.5%. A cone-calorimeter test indicated that the peak heat-release rate of the modified foam was reduced by 33.7% compared with that of neat RPUF. Calculations determined that the flame retardancy index (FRI) value was 7.88 for a modified foam, which shows a "good" flame retardancy. Moreover, the modified foams exhibited improvements in both compressive and flexural strength owing to the introduction of the rosin. This study has important implications for the development of modified polymers with good flame and smoke suppression from renewable resources.