MOF-74协同膨胀阻燃EVA及其性能研究  

Performance of synergistic intumescent flame⁃retardant EVA with MOF-74

作　　者：沈文涛 胡心蕊 张硕[1] 许苗军[1] SHEN Wentao;HU Xinrui;ZHANG Shuo;XU Miaojun(College of Chemistry,Chemical Engineering and Resource Utilization,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学化学化工与资源利用学院,哈尔滨150040

出　　处：《中国塑料》2024年第9期20-23,共4页China Plastics

摘　　要：将一种镍基金属有机框架材料(MOF-74)与焦磷酸哌嗪(PPAP)及三嗪成炭剂(CFA)以一定的质量比均匀混合后加入到乙烯-醋酸乙烯酯树脂(EVA)中,制备阻燃EVA材料并对其性能进行了表征。结果表明,PPAP/CFA(IFR)的质量比为3∶1,添加量为19%(质量分数,下同),材料在垂直燃烧测试时通过了UL 94 V-0级,极限氧指数(LOI)为26.9%;当IFR/MOF-74的质量比为97∶3,添加量为18%时,材料就能通过UL 94 V-0级,LOI值为27.1%;锥形量热测试表明,MOF-74的加入有效降低了材料的热量、烟气及一氧化碳的释放,表现了良好的协同阻燃作用,同时提高了阻燃剂与聚合物的相容性,使得阻燃EVA材料保持了良好的力学性能。A nickel-containing metal-organic framework material(MOF-74),piperazine pyrophosphate(PPAP),and a triazine charring foaming agent(CFA)were homogeneously mixed at a certain mass ratio and then incorporated into eth-ylene-vinyl-acetate resin(EVA).The performance of the resultant EVA composites was characterized.When 19 wt%PPAP/CFA(IFR)was introduced with a mass ratio of 3:1,the EVA composites obtain a UL 94 V-0 classification in the vertical burning tests as well as a limiting oxygen index(LOI)of 26.9%.IFR was mixed with MOF-74 at a mass ratio of 97:3,and then the resultant mixture was introduced into EVA,the resulting composites achieved a UL 94 V-0 classification along with an LOI of 27.1%at a IFR/MOF-74 loading of 18%.The cone calorimetry test results indicat-ed that the addition of MOF-74 effectively inhibited the release of heat,smoke and carbon monoxide during combustion.It was demonstrated that MOF-74 generated an excellent synergistic flame-retardant effect.Meanwhile,the compatibili-ty between the flame-retardant additives and polymer matrix was improved.Consequently,the mechanical properties of the resultant flame-retardant EVA composites were well maintained.

关 键 词：乙烯-醋酸乙烯酯 镍基金属有机框架材料 协同阻燃 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]