Highly Efficient Flame Retardant Polyurethane-Polyisocyanurate Foam with a Novel Phosphorus-Containing Soy Polyol and Expandable Graphite
In this work, a novel phosphorus-containing soy-based polyol (PCSO) was firstly synthesized from epoxidized soybean oil (ESO) and 2-carboxyethyl(phenyl)phosphinic acid (CEPPA).Its structure was confirmed by FTIR, 1H NMR and 31p NMR.Then, a biomass-based polyurethane-polyisocyanurate (PIR) foam was fabricated by PCSO entirely replacing petroleum-based polyether polyol.The flammability of the soy-based PIR (P-PIR) was obviously reduced by the introduction of PCSO, due to the achievement of UL-94 V-0.However, its LOI was only increased to 21.5%.A commercial alkyl phosphate polyol (BY30) and expandable graphite (EG) were used to further improve its LOI to 29.5% by addition of 15% BY30 and 10% EG.In addition, its Pk-HRR, THR and TSP were further decreased by 58%, 57% and 83%, respectively.The excellent flame retardancy of PB-PIR/EG foam was due to the synergistic effect between the gaseous phase action of PCSO and the condensed phase action of EG.
M.C.Tao X.Y.Liu M.J.Chen Z.X.Feng M.Fan B.T.Huang L.He Z.G.Liu
School of Science, Xihua University, Chengdu, 610039, China
国际会议
杭州
英文
101-102
2018-06-14（万方平台首次上网日期，不代表论文的发表时间）