一种具有良好抑烟性能的磷杂菲阻燃剂在环氧树脂中的应用研究  

Study on a Good Smoke Suppressive Phosphaphenanthrene Flame Retardant Exploited in Epoxy Resin

作　　者：范娟娟 闵样 杨吉 张永航[1] 班大明[1] FAN Juanjuan;MIN Yang;YANG Ji;ZHANG Yonghang;BAN Daming(School of Chemistry and Materials Science,Guizhou Normal University,Guiyang 550025,China)

机构地区：[1]贵州师范大学化学与材料科学学院,贵阳550025

出　　处：《材料导报》2021年第10期10189-10196,共8页Materials Reports

基　　金：国家自然科学基金(51763005);贵州省科技厅科技合作计划(黔科合J字〔2010〕13号);贵州省科技计划项目(黔科合平台人才〔2017〕5726号)。

摘　　要：本工作通过两步反应合成了一种磷杂菲类高效阻燃剂10-(2,5-二羟基二苯基)-10-氢-9-氧杂-10-磷杂菲-10-硫化物(DOPS-NQ),并将其用于环氧树脂(EP)的阻燃改性,探究了阻燃改性对EP材料阻燃性能、热性能及力学性能的影响。采用红外光谱(FTIR)和核磁共振确定了阻燃剂DOPS-NQ的结构,并通过氧指数(LOI)、垂直燃烧(UL-94)、热失重(TG)、锥形量热(CONE)测试了阻燃EP复合材料的阻燃性能和热性能。结果表明,在阻燃剂添加量较少的情况下,DOPS-NQ与聚磷酸铵(APP)复配时能够有效地抑制热量及烟气的释放,增大EP复合材料的LOI及残炭量。其中,当DOPS-NQ/APP的添加量为20%时,阻燃EP复合材料的LOI值增大到32.8%,锥形量热测试表明TSP和SPR分别减小了92%和91%,pHRR、THR、CO的释放量分别下降了81.6%、67.1%、93.3%,残炭量增加了46.5%,同时DOPS-NQ的加入也有助于提升EP复合材料的力学性能。In this work,a flame retardant based on an efficient phosphaphenanthrene derivative,10-(2,5-dihydroxydiphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-sulfide,was synthesized via two-step reaction.The structure of the obtained compound was determined by Fourier transform infrared spectroscopy(FTIR),nuclear magnetic resonance(NMR).Thereafter,the flame retardant properties and thermal properties of epoxy resins cured by aforesaid compound were investigated by limited oxygen index(LOI),vertical burning test(UL-94),thermogravimetry(TG)and cone calorimetry(CONE),respectively.The results indicated that a small amount of DOPS-NQ and APP can effectively inhibit the release of heat and smoke generation and promote the LOI and carbon residue of EP composites.Especially,when DOPS-NQ/APP content was 20%,the LOI value of the flame-retardant EP composite increased to 32.8%.Moreover,CONE test revealed 92%reduction in TSP and 91%reduction in SPR compared to the untreated epoxy resins;the pHRR,THR and CO were also reduced by 81.6%,67.1%,93.3%,respectively,and the residues increased by 46.5%.At the same time,the addition of DOPS-NQ also improves the mechanical properties of EP composites drama-tically.

关 键 词：DOPS-NQ 聚磷酸铵 环氧树脂 阻燃性能 抑烟性能 

分 类 号：TQ314[化学工程—高聚物工业]