Rosin-Based Si/P-Containing Flame Retardant Toward Enhanced Fire Safety Polyurethane Foam

编号 020033401

推送时间 20220314

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Rosin-Based Si/P-Containing Flame Retardant Toward Enhanced Fire Safety Polyurethane Foam

来源期刊 Advanced Engineering Materials

期 第334期

发表时间 20211031

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.

服务人员 尚玮姣

服务院士 宋湛谦

PDF文件 浏览全文