席夫碱金属配合物改性DOPO对环氧树脂阻燃性能的影响  

Effect of DOPO modified with Schiff's alkali metal complexes on the flame retardancy of epoxy resins

作　　者：王婧煊 芦悦 何亮潮 孔庆红 Wang Jingxuan;Lu Yue;He Liangchao;Kong Qinghong(School of Environment and Safety Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;School of Emergency Management,Jiangsu University,Zhenjiang Jiangsu 212013,China)

机构地区：[1]江苏大学环境与安全工程学院,江苏镇江212013 [2]江苏大学应急管理学院,江苏镇江212013

出　　处：《消防科学与技术》2025年第2期175-180,189,共7页Fire Science and Technology

基　　金：江苏大学校企合作项目(20220307)。

摘　　要：为了设计和开发具有绿色、环保高阻燃效率的EP阻燃剂,以SAPO及Fe(NO_(3))_(3)·9H_(2)O、Bi(NO_(3))_(3)·5H_(2)O为原料,设计合成了两种水杨醛基席夫碱金属化合物SAPO-Fe、SAPO-Bi。研究了它们对EP复合材料热稳定性能和阻燃性能的影响,并探究相关阻燃机理。结果显示,EP/6%SAPO-Fe、EP/6%SAPO-Bi的垂直燃烧测试通过UL 94 V-1等级;LOI值分别提升20.6%和16.2%;p HRR值降低28.6%和34.8%;THR值降低30.8%和14.2%;与EP相比,残炭量分别增加了74.1%和112.9%;TSP值降低了40.4%和38.9%;PCOP值降低44.4%和50%。阻燃性能的显著提升主要得益于P、N元素与金属离子Fe^(3+)、Bi^(3+)的协同效应;残炭量的显著增加以及烟气释放的有效降低,归因于这些金属离子卓越的催化成炭能力,形成致密的炭层增强物理阻隔效果,从而有效阻止烟气的产生、可燃气体的逸出、氧气的进入以及热量的释放。In order to design and develop EP flame retardants with green,environmentally friendly high flame retardant efficiency,two salicylaldehyde-based Schiff alkali metal compounds,SAPO-Fe and SAPO-Bi,were designed and synthesised using SAPO and Fe(NO_3)_3·9H_(2O) and Bi(NO_3)_3·5H_(2O) as raw materials.The effects of these compounds on the thermal stability and flame retardancy properties of EP composites were investigated and the related flame retardant mechanisms were probed.The results showed that the vertical combustion test of EP/6%SAPO-Fe and EP/6%SAPO-Bi passed UL 94 V-1 rating;The LOI values were improved by 20.6%and16.2%,respectively;the p HRR values were reduced by 28.6%and 34.8%;The THR values were reduced by30.8%and 14.2%,and the amount of residual carbon was increased compared with that of EP by 74.1%and112.9%;TSP values decreased by 40.4%and 38.9%;PCOP values decreased by 44.4%and 50%.The signifi‐cant improvement in flame retardant performance is mainly due to the synergistic effect of P and N elements and metal ions Fe~(3+)and Bi~(3+).The significant increase in the amount of residual carbon and the effective reduction of smoke release are attributed to the excellent catalytic carbon formation ability of these metal ions,which forms a dense carbon layer to enhance the physical barrier effect,thus effectively preventing the generation of smoke,the escape of combustible gases,the entry of oxygen and the release of heat.

关 键 词：环氧树脂 DOPO 阻燃性能 席夫碱金属配合物 P/N协同阻燃 

分 类 号：TQ028.8[化学工程] X932[环境科学与工程—安全科学]