功能化氧化石墨烯聚合物复合材料结构与性能的研究

发布时间：2018-03-06 13:49

本文选题：氧化石墨烯　切入点：有机磷酸锆　出处：《西南大学》2015年硕士论文　论文类型：学位论文

【摘要】：在聚合物复合材料领域,聚合物/纳米粒子复合材料得到广泛关注。通过向聚合物中加入纳米粒子可以提高聚合物的界面作用力,从而提高聚合物的力学性能和稳定性能,且这些复合材料还可以应用于阻燃、催化和传感器等领域。但是聚合物/纳米粒子复合材料中填料和基质之间的不相容性会降低材料的性质。为了提高纳米粒子在基质中的分散性,可以在纳米粒子进行表面功能化处理。基于此,我们在氧化石墨烯表面进行改性制备了一系列含有特殊功能官能团的氧化石墨烯衍生物来提高聚合物的综合性能。首先,制备了一系列海藻酸钠/氧化石墨烯(SA/GO-n)和海藻酸钠/改性氧化石墨烯(SA/MGO-n)生物复合膜。我们通过比较GO和MGO对SA性能的影响来研究填料和基质之间的界面作用力。通过傅里叶红外(FTIR)、原子力显微镜(AFM)、透射电镜(TEM)、X-射线衍射(XRD)、扫描电镜(SEM)、热重分析(TGA)、紫外(UV-vis)和力学性能分析来研究生物复合膜的结构、形貌和性质。结果表明GO (MGO)与SA之间存在较强的相互作用力。与SA相比,SA/MGO生物复合膜最大杨氏模量、拉伸强度、断裂伸长率分别提高了37.8%、68.4%、44.9%,然而SA/GO生物复合膜却只提高了19.6%、44%、36.5%。其次,成功制备了一类氧化石墨烯有机磷酸锆异质耦合阻燃剂氧化石墨烯-2-(2-(2-氨乙基氨)乙基氨)乙基膦酸锆(GO-Zr(AE)3P, GO-Zr[O3P(CH2)2NH(CH2)2NH(CH2)2NH2]2·H2O,并合成了一系列的PP/Zr(AE)3P和PP/GO-Zr(AE)3P纳米复合材料。通过红外分析(FTIR)、透射电镜(TEM)、热重分析(TGA)、X-射线衍射(XRD)、扫描电镜(SEM)、力学性能测试和垂直燃烧测试研究了填料及复合材料的结构、稳定性能、力学性能、阻燃性能及炭灰形貌。结果表明氧化石墨烯有机磷酸锆异质耦合阻燃剂是一种优异的阻燃剂,对PP阻燃效率高。最后,成功制备了一种新型氧化石墨烯有机磷酸锆异质耦合阻燃剂—氧化石墨烯-2-(2-(2-氨乙基氨)乙基氨)乙基膦酸锆(GO-Zr(AE)3P, GO-Zr[O3P(CH2)2NH(CH2)2NH(CH2)2NH2]2、氧化石墨烯-1,3,5-三嗪-2,4-二胺-6-仲胺乙基膦酸锆(GO-ZrMelP,GO-Zr[O3P(CH2)2NHC3N3(NH2)2]2、氧化石墨烯-对苯甲酸-N,N-二甲基膦酸锆(GO-ZrBMP,GO-Zr[O3PCH2)2NCH2C6H4COOH)]2并合成了一系列的PP/GO-Zr(AE)3P、PP/GO-ZrMelP、PP/GOZrBMP纳米复合材料。通过红外分析(FTIR)、透射电镜(TEM)、热重分析(TGA)、X-射线衍射(XRD)、扫描电镜(SEM)、力学性能测试和垂直燃烧测试研究了填料及复合材料的结构、稳定性能、力学性能、阻燃性能及炭灰形貌。
[Abstract]:In the field of polymer composites, polymer / nanoparticle composites have attracted wide attention. By adding nanoparticles to polymers, the interfacial forces of polymers can be improved, thus the mechanical properties and stability of polymers can be improved. And these composites can also be used as flame retardants, However, the incompatibility between fillers and substrates in polymer / nanoparticles composites reduces the properties of the materials. In order to improve the dispersion of nanoparticles in the matrix, Based on this, a series of graphene oxide derivatives with special functional groups were prepared on the surface of graphene oxide to improve the comprehensive properties of polymers. A series of sodium alginate / graphene oxide (SA / GO-n) and sodium alginate / modified graphene oxide (SA / MGO-n) biological composite membranes were prepared. The interfacial forces between filler and matrix were studied by comparing the effects of go and MGO on the properties of SA. The structure of the biofilm was studied by FTIR, AFM, TEM, SEM, TGA, UV-vis) and mechanical properties analysis. Compared with SA, the maximum Young's modulus, tensile strength and elongation at break of the SA-MGO biomembrane were increased by 37.8%, 68.4% and 44.9%, respectively. However, the SA/GO biofilm only increased 19.64436.55.In addition, the maximum Young's modulus, tensile strength and elongation at break of the SA-MGO composite membrane were increased only by 19.64436.5.The maximum Young's modulus, tensile strength and elongation at break of the SA-MGO composite membrane were increased by 37.8% and 68.4%, respectively. A class of graphene oxide zirconium phosphate heterogenous flame retardants, graphene oxide-2-(2-(2 -) 2-(aminoethyl) ethylamino)-ethyl phosphonate) zirconium oxide (GO-ZrAe) 3P, GO-Zr [O3PCH2 (2) NHCH2 + 2 (NH2 +) CH2] 2 路H2O have been successfully prepared. A series of PP/Zr(AE)3P and PP/GO-Zr(AE)3P nanocomposites have been synthesized by infrared analysis. FTIR, TEM, TGA, XRD, SEM, mechanical properties and vertical combustion tests, the structure of fillers and composite materials were studied by means of thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), mechanical properties test and vertical combustion test. Stability, mechanical properties, flame retardancy and morphology of carbon ash. The results show that graphene oxide organozirconium phosphate heterogenous flame retardant is an excellent flame retardant and has high flame retardant efficiency to PP. A novel heterogeneous flame retardant of graphene organophosphate zirconium oxide, graphene oxide, was successfully prepared. The ethylphosphonate zirconium (GO-ZrAe) ethylaminoethyl phosphonate (GO-ZrAe) 3P, GO-Zr [O _ 3P _ (Ch _ 2H _ 2H _ 2H _ 2H _ 2o _ 2H _ 2H _ 2O _ 2H _ 2H _ 2H _ 2H _ 2H _ 2H _ 2H _ 2H _ 2H _ 2H _ 2O _ 2), graphene oxide _ 3H _ 3H _ 3H _ 2H _ 2H _ 2H _ 2O _ 2H _ 2O _ 2O _ 3H _ 3H _ 2H _ 2H _ 2O _ 2) were prepared. A series of PP- / GO-ZrAEN / GO-ZrBMP nanocomposites were synthesized by GO-ZrBMPP [O _ 3PCH _ 2o _ 2NCH _ 2C _ 6H _ 4COOH] _ 2 and a series of PP- / GO-Zr-AEO _ 3PN / GO-Zr _ MelPP-P / GOZrBMP nanocomposites were synthesized by FTIR, TEM, TGA, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM, SEM and SEM. The structure of fillers and composites was studied by burning test. Stability, mechanical properties, flame retardancy and carbon ash morphology.
【学位授予单位】：西南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB33

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