功能化石墨烯对PMMA阻燃性能的影响
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1.东北石油大学石油工程学院;2.滨州学院化工与安全学院;3.南京工业大学安全科学与工程学院

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TQ323

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Effect of Functionalized Graphene on the Flame Retardant Performance of PMMA
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College of Petroleum Engineering, Northeast Petroleum University

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    摘要:

    为制备出具备热稳定性好、阻燃性能优越的光学阻燃材料,对氧化铈(CeO2)对氧化石墨烯(GO)功能化处理,并通过原位聚合法制备出CeO2/ GO /聚甲基丙烯酸甲酯(PMMA)复合材料。以光学显微镜(OM)、电子显微镜(SEM)、傅里叶红外光谱(FTIR)和X射线衍射 (XRD)分析复合材料的形貌及结构,利用热重分析TGA和极限氧指数(LOI)研究复合材料的热稳定性和阻燃性能。结果表明:CeO2/GO/PMMA复合材料成球率更高、形状更加规则、粒径分布更加均匀、其起始热分解温度提升了13 ℃,热稳定性得到提升。并且CeO2/GO的加入可提升复合材料的极限氧指数(LOI),具体为20.5%,相较于纯PMMA材料提高了3.2%。最后分析了改善PMMA的阻燃性能的气象机理和凝聚相机理。用CeO2/GO对PMMA的阻燃改性研究具备相当广阔的应用前景。

    Abstract:

    In order to prepare optical flame retardant materials with good thermal stability and excellent flame retardant properties, graphene oxide (GO) was functionalized with cerium oxide (CeO2), and the CeO2/GO/polymethyl methacrylate (PMMA) composite was prepared by in-situ polymerization. The morphology and structure of the composite material were analyzed by optical microscope (OM), electron microscope (SEM), Fourier infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The thermal stability and flame-retardant properties of composite materials were studied by thermogravimetric analysis TGA and limiting oxygen index (LOI). The results show that the CeO2/GO/PMMA composite has a higher sphericity rate, a more regular shape, and a more uniform particle size distribution. The initial thermal decomposition temperature was increased by 13 ℃, and the thermal stability was improved. And the addition of CeO2/GO can increase the limiting oxygen index (LOI) of the composite material, specifically 20.5%, which is 3.2% higher than that of the pure PMMA material. Finally, the meteorological mechanism and cohesion mechanism to improve the flame retardant performance of PMMA are analyzed. The flame retardant modification of PMMA with CeO2/GO has a very broad application prospect.

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宋洋,许兰娟,李哲,等. 功能化石墨烯对PMMA阻燃性能的影响[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-10-04
  • 最后修改日期:2022-03-09
  • 录用日期:2022-03-21
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