文献类型：期刊文献

英文题名：Rosin-Based Si/P-Containing Flame Retardant Toward Enhanced Fire Safety Polyurethane Foam

作者：Wang, Shibo[1] Sun, Penghao[2] Xu, Xu[2] Liu, He[1] Wang, Dan[1] Huang, Xujuan[3]

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, Beijing 210042, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Peoples R China;[3]Yancheng Inst Technol, Sch Chem & Chem, Yancheng 224051, Peoples R China

年份：2022

卷号：24

期号：4

外文期刊名：ADVANCED ENGINEERING MATERIALS

收录：;EI(收录号：20214411108112);Scopus(收录号：2-s2.0-85118299553);WOS:【SCI-EXPANDED(收录号:WOS:000713069600001)】；

基金：S.W. and P.S.) contributed equally to this work. This work was financially supported by the National Natural Science Foundation of China (32071708); National Key Research and Development Program of China (2018YFD0600402); and National Natural Science Foundation of China (31901257).

语种：英文

外文关键词：bio-resource; flame retardant; rosin; synergistic effect

摘要：Environmentally friendly flame retardant such as polysiloxane has long been sought for varied studies in recent years and can be further improved to overcome the challenges of additional applications. Herein, a novel synergistic-effect flame retardant containing Si and P is synthesized. Si-P containing flame retardant (DOPO-MGSO) is then added into a network to fabricate rigid polyurethane foam via a one-step process. The bio-renewable resource maleopimaric acid (MPA) impedes conversion of the cyclic siloxane, thereby enhancing the compactness of the silica layer in condensed phase. Furthermore, the DOPO groups quench free radicals in the gas phase. Compared with the unmodified sample, the limiting oxygen index of the modified foam increases from 17.1% to 25.2%. Moreover, CONE tests show that the peak heat release rate decreases from 260.1 to 136.2 kW m(-1) (close to 50%) after modification. Importantly, the generation of silica-rich char significantly reduces the total smoke release (decrease from 1154.4 to 715.9 m(2) m(-2)). In addition, the improvement of compressive strength benefits from the MPA rigid ring.