|
|
- 2018
纳米SiO2-氧化石墨烯/环氧涂层的制备及其防腐蚀性能
|
Abstract:
采用改进Hummers法制备了氧化石墨烯（GO），并将GO与经硅烷偶联剂γ-氨丙基三乙氧基硅烷（KH550）改性的纳米SiO2进行复合，制备出纳米SiO2-GO。通过FTIR、XRD、SEM、TEM等分析手段对SiO2-GO进行表征。采用机械搅拌与超声分散的方法将SiO2-GO添加到环氧树脂（EP）中。对添加不同质量分数纳米SiO2、GO和纳米SiO2-GO的EP基复合材料涂层的物理性能和电化学性能进行测试。结果表明，与纯EP涂层相比，SiO2/EP、GO/EP和纳米SiO2-GO/EP复合材料涂层的硬度、附着力和耐腐蚀性能得到显著增强，其中加入2wt%纳米SiO2-GO/EP复合材料涂层硬度达到5 H，附着力等级达到1级，浸泡24 h后涂层保护效率为99.33%。15天浸泡试验结果表明，添加1.5wt%纳米SiO2-GO/EP复合材料涂层的硬度达到5 H，附着力达到1级，涂层保护效率仍能达到97.12%。 Graphene oxide (GO) was prepared by modified Hummers method, and nano SiO2-GO was prepared by combining GO with nano SiO2, which modified by silane coupling agent γ-aminopropyltriethoxysilane(KH550). The nano SiO2-GO was characterized by FTIR, XRD, SEM and TEM. The nano SiO2-GO was added to the epoxy resin(EP) coating by mechanical mixing and ultrasonic dispersion.The physical properties and electrochemical properties of the coatings with different mass fraction of nano SiO2, GO and nano SiO2-GO composites were tested. The results show that compared with the pure EP coating, the hardness, adhesion and corrosion resistance of nano SiO2/EP, GO/EP and nano SiO2-GO/EP are obviously enhanced. The hardness of the coating with 2wt% nano SiO2-GO is 5 H, the adhesion grade reaches 1, and the protection efficiency is 99.33% after immersion 24 h. The results of 15 days immersion test show that the coating hardness of 1.5wt% nano SiO2-GO/EP reaches 5 H, the adhesion grade is 1, and the protection efficiency still remain at 97.12%.
| [1] | HE H, KLINOWSKI J, FORSTER M, et al. A new structural model for graphite oxide[J]. Chemical Physics Letters, 1998, 287(1-2):53-56. |
| [2] | 周宏, 朴明昕, 李芹, 等. 氧化石墨烯纳米片/环氧树脂复合材料的制备与性能[J]. 复合材料学报, 2015, 32(5):1309-1315. ZHOU H, PU M X, LI Q, et al. Preparation and properties of oxide graphene nanosheets/epoxy composites[J]. Acta Materiae Compositae Sinica, 2015, 32(5):1309-1315(in Chinese). |
| [3] | WANG Z B, WANG Z Y, HU H X, et al. corrosion protection performance of nano-SiO2/epoxy composite coatings in acidic desulfurized flue gas condensates[J]. Journal of Materials Engineering & Performance, 2016, 25(9):1-10. |
| [4] | YEH J M, WENG C J, LIAO W J, et al. Anticorrosively enhanced PMMA-SiO2, hybrid coatings prepared from the sol-gel approach with MSMA as the coupling agent[J]. Surface & Coatings Technology, 2006, 201(3-4):1788-1795. |
| [5] | LIN Y, JIN J, SONG M. Preparation and characterisation of covalent polymer functionalized graphene oxide[J]. Journal of Materials Chemistry, 2011, 21(10):3455-3461. |
| [6] | YU Z, DI H, MA Y, et al. Preparation of graphene oxide modified by titanium dioxide to enhance the anti-corrosion performance of epoxy coatings[J]. Surface & Coatings Technology, 2015, 276:471-478. |
| [7] | 王璧, 徐瑞芬, 丁雪佳. PMMA/TiO2纳米复合粒子的制备及初步应用研究[J]. 北京化工大学学报(自然科学), 2006, 33(2):72-75. WANG B, XU R F, DING X J. Preparation and preliminary application of PMMA/TiO2 nanocomposite particles[J]. Journal of Beijing University of Chemical Technology (Natural Science Edition), 2006, 33(2):72-75(in Chinese). |
| [8] | SHEN X J, PEI X Q, FU S Y, et al. Significantly modified tribological performance of epoxy nanocomposites at very low graphene oxide content[J]. Polymer, 2013, 54(3):1234-1242. |
| [9] | MA Y, DI H, YU Z, et al. Fabrication of silica-decorated graphene oxide nanohybrids and the properties of composite epoxy coatings research[J]. Applied Surface Science, 2016, 360:936-945. |
| [10] | SHARIF F, GUDARZI M M. Enhancement of dispersion and bonding of graphene-polymer through wet transfer of functionalized graphene oxide[J]. Express Polymer Letters, 2012, 6(12):1017-1031. |
| [11] | RAJABI M, RASHED G R, ZAAREI D. Assessment of graphene oxide/epoxy nanocomposite as corrosion resistance coating on carbon steel[J]. Corrosion Engineering, Science & Technology, 2014, 50(7):509-516. |
| [12] | LIU S, GU L, ZHAO H, et al. Corrosion resistance of graphene-reinforced waterborne epoxy coatings[J]. Journal of Materials Science & Technology, 2016, 32(5):425-431. |
| [13] | HU C, LI Y, KONG Y, et al. Preparation of poly(o-toluidine)/nano ZnO/epoxy composite coating and evaluation of its corrosion resistance properties[J]. Synthetic Metals, 2016, 214:62-70. |
| [14] | ZhANG C, HE Y, XU Z, et al. Fabrication of Fe3O4@SiO2 nanocomposites to enhance anticorrosion performance of epoxy coatings[J]. Polymers for Advanced Technologies, 2016, 27(6):740-747. |
| [15] | SHIN H J, KIM K K, BENAYAD A, et al. Efficient reduction of graphite oxide by sodium borohydride and its effect on electrical conductance[J]. Advanced Functional Materials, 2009, 19(12):1987-1992. |
| [16] | ALLEN M J, TUNG V C, KANER R B. Honeycomb carbon:A review of graphene[J]. Chemical Reviews, 2010, 110(1):132-145. |
| [17] | SHEN X J, PEI X Q, FU S Y, et al. Significantly modified tribological performance of epoxy nano composites at very low graphene oxide content[J]. Polymer, 2013, 54(3):1234-1242. |
| [18] | MARCANO D C, KOSYNKIN D V, BERLIN J M, et al. Improved synthesis of graphene oxide[J]. ACS Nano, 2010, 4(8):4806-4814. |
| [19] | ZHOU S, WU L, SUN J, et al. The change of the properties of acrylic-based polyurethane via addition of nano-silica[J]. Progress in Organic Coatings, 2002, 45(1):33-42. |
| [20] | 毋伟, 贾梦秋, 陈建峰, 等. 硅烷偶联剂对溶胶凝胶法纳米二氧化硅复合材料制备及应用的影响[J]. 复合材料学报, 2004, 21(2):70-75. WU W, JIA M Q, CHEN J F, et al. Effect of silane coupling agent on the preparation and application of sol-gel nano-silica composites[J]. Acta Materiae Compositae Sinica, 2004, 21(2):70-75(in Chinese). |
| [21] | 中国国家标准化管理委员会. 色漆和清漆铅笔法测定漆膜硬度:GB/T 6739-2006[S]. 北京:中国标准出版社, 2007. Standardization Administration of the People's Republic of China. Paints and varnishes:Determination of film hardness by pencil test:GB/T 6739-2006[S]. Beijing:China Standards Press, 2007(in Chinese). |
| [22] | 国家质量技术监督局. 色漆和清漆漆膜的划格试验:GB/T 9286-1998[S]. 北京:中国标准出版社, 1999. State Bureau of Quality Technical Supervision. Paints and varnishes:Cross cut test for films:GB/T 9286-1998[S]. Beijing:China Standards Press, 1999(in Chinese). |
| [23] | 罗俊, 王芳辉, 孔令汉, 等. Fe3O4/石墨烯复合材料的制备与表征[J]. 功能材料, 2015, 46(7):7100-7102. LUO J, WANG F H, KANG L H, et al. Preparation and characterization of Fe3O4/graphene composites[J]. Functional Materials, 2015, 46(7):7100-7102(in Chinese). |
| [24] | SRIVASTAVA R K, WANG X, KUMAR V, et al. Synthesis of benzimidazole-grafted graphene oxide/multi-walled carbon nanotubes composite for supercapacitance application[J]. Journal of Alloys & Compounds, 2014, 612(41):343-348. |
