纳米硼酸镧/聚苯乙烯复合材料制备及阻燃性能研究
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摘要
采用原位聚合的方法将纳米硼酸镧与聚苯乙烯进行复合,制备纳米硼酸镧/聚苯乙烯复合材料。采用X射线衍射、红外光谱、扫描电子显微镜、热重分析和氧指数分析仪分析手段对产品的晶体组成、微观结构、阻燃性能和热稳定性进行表征。研究表明,纳米硼酸镧/聚苯乙烯复合材料具有表面均一、致密的表面结构,热稳定性明显提高,纳米硼酸镧添加量7%时,复合材料氧指数达到最大值32.5,聚苯乙烯阻燃性能显著增强。
Nano lanthanum borate LaBO_3 and polystyrene were used to prepare nano lanthanum borate LaBO_3/polystyrene composite through in situ polymerization reaction. The obtained samples were characterized by X-Ray powder diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),Field-emission scanning electronic microscope(FESEM),thermo gravimetry analysis(TGA) and Limited oxygen index(LOI) test. The results showed that the nanocomposite was uniform; the thermal stability of the polystyrene was significantly improved. When adding amount was 7%,the oxygen index of the nanomaterial would be up to 32. 5,indicating that the composite had excellent flame retardant properties.
Nano lanthanum borate LaBO_3 and polystyrene were used to prepare nano lanthanum borate LaBO_3/polystyrene composite through in situ polymerization reaction. The obtained samples were characterized by X-Ray powder diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),Field-emission scanning electronic microscope(FESEM),thermo gravimetry analysis(TGA) and Limited oxygen index(LOI) test. The results showed that the nanocomposite was uniform; the thermal stability of the polystyrene was significantly improved. When adding amount was 7%,the oxygen index of the nanomaterial would be up to 32. 5,indicating that the composite had excellent flame retardant properties.
引文
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[3]Babak A,Reza B.Deformation behavior and mechanical properties of polystyrene/organoclay/SEBS[J].Mechanics of Materials,2016,10(103):11-17.
[4]Zhang M,Zhang C,Du Z J,et al.Preparation of antistatic polystyrene superfine powder with polystyrene modified carbon nanotubes as antistatic agent[J].Composites ScienceandTechnology,2017,138:1-7.
[5]Zhang Z L,Han Y Q,Li T G,et al.Polyaniline/montmorillonite nanocomposites as an effective flame retardant and smoke suppressant for polystyrene[J].Synthetic Metals,2016,10(221):28-38.
[6]Laoutid F,Bonnaud L,Alexandre M,et al.New prospects in flame retardant polymer materials:From fundamentals to nanocomposites[J].Materials Science and Engineering:R:Reports,2009,3(63):100-125.
[7]Feng C M,Zhang Y,Liang D,et al.Influence of zinc borate on the flame retardancy and thermal stability of intumescent flame retardant polypropylene composites[J].Journal of Analytical and Applied Pyrolysis,2015,115:224-232.
[8]Feng C M,Zhang Y,Liu S W,et al.Synthesis of novel triazine charring agent and its effect in intumescent flame retardant polypropylene[J].Journal of Applied Polymer Science,2012,123(6):3208-3216.
[9]Nour F A,Heshiam A A,Mohamed A H.Synergistic study of carbon nanotubes,rice husk ash and flame retardant materials on the flammability of polystyrene nanocomposites[J].Materials Today:Proceedings,2015,7(2):3998-4005.
[10]薛林.新型硼酸盐纳米材料的制备及表征[D].西安:陕西师范大学,2008.
[11]Gu K C,Chen B S,Wang X M,et al.Preparation,friction and wear properties of hydrophobic lanthanum borate nanorods in rapeseed oil[J].Transactions of Nonferrous Metals Society of China,2014,24:3578-3584.
[12]熊红红,陈巧霞,朱超,等.硼酸镧钙中三价铕离子的辐射跃迁参数[J].大连工业大学学报,2014,5(33):372-376.
[13]Gao X Y,Guo Y P,Tian Y M,et al.Synthesis and characterization of polyurethane/zinc borate nanocomposites[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2011,384(1/2/3):2-8.
[14]胡荣祖,史启祯.热分析动力学[M].北京:科学出版社,2001.
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