主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (12): 1808-1813.

• • 上一篇    下一篇

阻燃环氧树脂/苯基膦酸铁复合材料燃烧性能研究

汪 源，张彩娇，刘 宏，孔庆红   

  1. （江苏大学 环境与安全工程学院，江苏 镇江212013）
  • 出版日期:2021-12-15 发布日期:2021-12-15
  • 作者简介:汪 源（1996-），男，江苏常州人，江苏大学环境与安全工程学院硕士研究生，主要从事阻燃材料研究，江苏省镇江市京口区学府路301号，212013。
  • 基金资助:
    国家自然科学基金青年科学基金项目（51603091）

Study on the synergistic flame retardancy of ferric phenylphosphonate/DOPO in epoxy resin composites

WANG Yuan, ZHANG Cai-jiao, LIU Hong, KONG Qing-hong   

  1. （School of the Environment and Safety Engineering, Jiangsu University, Jiangsu Zhenjiang 212013, China）
  • Online:2021-12-15 Published:2021-12-15

摘要： 以苯基膦酸、硝酸铁为原料，乙醇、乙二醇为溶剂，聚乙烯吡咯烷酮、六亚甲基四胺分别为表面活性剂和配位剂，采用混合溶剂法制备层状化合物苯基膦酸铁（FePP），并将其添加到环氧树脂中（EP）制备复合材料。热重（TG）结果显示，FePP可以提高EP的热稳定性，同时，EP/4FePP的垂直燃烧测试（UL-94）等级达到V-1，氧指数（LOI）也相应提高。为了进一步改善EP的阻燃性能，将FePP与含磷阻燃剂DOPO协效阻燃EP，测试结果显示EP/3DOPO/1FePP复合材料可以通过UL-94 V-0等级，LOI值高达34.5 %，热释放速率峰值（PHRR）与总热释放速率（THR）与纯EP相比分别降低了28.4%和18.1%，这主要是由于FePP能够在燃烧中降解为含磷和金属的氧化物，促进聚合物快速炭化，并且DOPO可捕捉气相中自由基，抑制链式反应的进行，抑制燃烧，达到气相和凝聚相协效阻燃效果。

关键词: 环氧树脂, 苯基膦酸铁, DOPO, 阻燃, 层状化合物

Abstract: Using phenylphosphonic acid and ferric nitrate as raw materials, ethanol and ethylene glycol as solvents, polyvinylpyrrolidone and hexamethylenetramine as surfactant and coordination agent, the layered compound iron phenylphosphonate (FePP) was prepared by mixed solvent method and then added into epoxy resin (EP). The thermogravimetric (TG) results showed that FePP could improve the thermal stability of EP. At the same time, the UL-94 level of EP/4FePP passed V-1, and the limit oxygen index (LOI) increased accordingly. In order to further improve the flame retardant performance of EP, FePP was mixed with phosphorus containing flame retardant DOPO to flame retardant EP. The test results showed that EP/3DOPO/1FePP nanocomposite can pass UL-94 V-0, and the LOI value was up to 34.5%. The peak heat release rate (PHR) and total heat release rate (THR) decreased by 28.4% and 18.1%, respectively, compared with pure EP. This was mainly because FePP can degrade into oxides containing phosphorus and metal during combustion, which promotes rapid carbonization of polymer. Moreover, DOPO can capture free radicals in gas phase, inhibit the chain reaction, and inhibit combustion. So as to achieve the gas phase and condensation phase co-effect flame retardant effect.

Key words: epoxy resin, iron phenylphosphonate, DOPO, flame retardant, layered compound