Application of BN nanosheets as atom-oxygen corrosion resistant fillers
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摘要: 对氮化硼纳米片(BNNS)作为填料提高聚合物的抗原子氧腐蚀性能进行了实验研究.利用液相剥离在聚乙烯醇(PVA)水溶液中制备了稳定分散的BNNS,采用基于离心技术的尺寸筛选方法,获得了具有3种不同横向尺寸的BNNS,其平均面积分别约为21.4,4.1, 1.0 μm2.采用浇注法,将PVA/BNNS分散液原位复合成复合薄膜.原子氧腐蚀实验表明:3种 BNNS均能提高PVA的抗原子氧腐蚀性能,添加约1.0 wt%的BNNS(平均面积为21.4 μm2) 可使质量损失降低87%.BNNS对原子氧的成键和壁垒效应,是其提高抗原子氧腐蚀性能的主要原因.Abstract: The application of boron nitride nanosheets (BNNS) as fillers to enhance the polymer's atom-oxygen corrosion resistance was investigated. Stable BNNS dispersions in polyvinylalcohol (PVA) solutions were prepared by liquid-phase exfoliation. By using a centrifugation-based size-select route, BNNS with three kinds of different lateral sizes were obtained. Their average area was about 21.4, 4.1, 1.0 μm2, respectively. The PVA/BNNS composite films were prepared by casting the PVA/BNNS dispersions. Atom-oxygen corrosion experiments indicate that all these BNNSs can enhance the atom-oxygen corrosion resistance of PVA. An addition of 1.0wt% BNNS (21.4 μm2) can lead to a reduction of 87% in PVA's mass loss. It is suggested that the bonding and barrier effects between atom oxygen and BNNS are responsible for the enhanced atom-oxygen corrosion resistance.
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Key words:
- boron nitride nanosheets /
- atom oxygen /
- corrosion /
- filler /
- polymer
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[1] Cun H, Iannuzzi M,Hemmi A,et al.Immobilizing individual atoms beneath a corrugated single layer of boron nitride[J].Nano Letters,2013,13(5):2098-2103. [2] Tang C C, Bando Y,Sato T,et al.SiC and its bicrystalline nanowires with uniform BN coatings[J].Applied Physics Letters,2002,80(24):4641-4643. [3] Pakdel A, Zhi C,Bando Y,et al.Boron nitride nanosheet coatings with controllable water repellency[J].ACS Nano,2011,5(8):6507-6515. [4] Tang C, Bando Y.Effect of BN coatings on oxidation resistance and field emission of SiC nanowires[J].Applied Physics Letters,2003,83(4):659-661. [5] Nechepurenko A, Samuni S.Oxidation protection of graphite by BN coatings[J].Journal of Solid State Chemistry,2000,154(1):162-164. [6] Husain E, Narayanan T N,Taha-Tijerina J J,et al.Marine corrosion protective coatings of hexagonal boron nitride thin films on stainless steel[J].ACS Applied Materials & Interfaces,2013,5(10):4129-4135. [7] Liu Z, Gong Y,Zhou W,et al.Ultrathin high-temperature oxidation-resistant coatings of hexagonal boron nitride[J].Nature Communications,2013,4:2541. [8] Li L H, Cervenka J,Watanabe K,et al.Strong oxidation resistance of atomically thin boron nitride nanosheets[J].ACS Nano,2014,8(2):1457-1462. [9] Yi M, Shen Z,Zhao X,et al.Boron nitride nanosheets as oxygen-atom corrosion protective coatings[J].Applied Physics Letters,2014,104(14):143101. [10] Zhao X, Shen Z,Xing Y,et al.A study of the reaction characteristics and mechanism of Kapton in plasma-type ground-based atomic oxygen effects simulation facility[J].Journal of Physics D:Applied Physics,2001,34(15):2308-2314. [11] Gouzman I, Girshevitz O,Grossman E,et al.Thin film oxide barrier layers:Protection of kapton from space environment by liquid phase deposition of titanium oxide[J].ACS Applied Materials & Interfaces,2010,2(7):1835-1843. [12] Wang X, Zhao X,Wang M,et al.An experimental study on improving the atomic oxygen resistance of epoxy resin/silica nanocomposites[J].Polymer Engineering & Science,2007,47(7):1156-1162. [13] Wang M, Zhao X,Shen Z,et al.Effects of plerospheres on the atomic oxygen resistance of a phenolic resin composite[J].Polymer Degradation and Stability,2004,86(3):521-528. [14] Zhao Y, Wu X,Yang J,et al.Oxidation of a two-dimensional hexagonal boron nitride monolayer:A first-principles study[J].Physical Chemistry Chemical Physics,2012,14(16):5545-5550. [15] Simonov K A, Vinogradov N A,Ng M L,et al.Controllable oxidation of h-BN monolayer on Ir (111) studied by core-level spectroscopies[J].Surface Science,2012,606(3-4):564-570. [16] Petravic M, Peter R,Kavre I,et al.Decoration of nitrogen vacancies by oxygen atoms in boron nitride nanotubes[J].Physical Chemistry Chemical Physics,2010,12(47):15349-15353.
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