摘要
环氧树脂(EP)的易燃性限制了其应用,因此提高EP的阻燃性能对提高EP的火安全性能,拓展其应用有重要的现实意义。生物质阻燃EP能够满足人们对环保的需求。文中利用生物质材料β-环糊精(β-CD)的分子活性,采用反应活性中间体磷酸酯二酰氯对其进行改性,然后将改性后的β-CD(mβ-CD)添加至EP中制备EP复合材料。结果发现,mβ-CD的加入能明显增加EP的成炭量,且EP的阻燃性能有明显的提高。当mβ-CD质量分数为25%时,氧指数(LOI)增加到28.7%、垂直燃烧测试(UL-94)等级达到V-0级别。EP/mβ-CD复合材料燃烧时能形成质量较高的稳定炭层,使材料燃烧时产生的热量和有毒烟气释放量得到有效抑制。
The flammability of epoxy resin(EP)limits its application.Thus,improving the flame retardancy of EP has important practical significance for improving the fire safety of EP and expanding its applications.Biomass flame retardant EP could meet demands for environmental protections.Because of the molecular activity of biomass materialβ-cyclodextrin(β-CD),it was modified with the reactive intermediate phosphate diacid chloride.Then the modifiedβ-CD(mβ-CD)was added into the EP matrix.It is found that the addition of mβ-CD could significantly increase the residue char amount of EP,and the flame retardancy of EP is been improved obviously.When the mass fraction of mβ-CD is 25%in EP,the oxygen index(LOI)is increased to 28.7%,and the vertical combustion test(UL-94)reaches the V-0 level.EP/mβ-CD composites could form stable and high-quality char layers when the materials are burned,so that the amounts of heat and toxic smoke released are suppressed effectively.
作者
单雪影
韩骥
宋艳
蒋军成
李锦春
Xueying Shan;Ji Han;Yan Song;Juncheng Jiang;Jinchun Li(School of Enoironmental and Safety Engineering,Changzhou University,Changzhou 213164,China;Petrochemical Safety and Environmental Engineering Research Center of Jiangsu Province,Changzhou 213164,China;School of Material Science and Engineering,Changzhou University,Changzhou 213164,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2021年第4期84-91,共8页
Polymer Materials Science & Engineering
基金
常州市科技项目(CJ20190047)
国家重大科研仪器研制项目(21927815)。
关键词
环氧树脂
Β-环糊精
热降解
阻燃性能
epoxy resin
β-cyclodextrin
thermal degradation
flame retardancy
