| 氮化硼纳米片作为抗原子氧腐蚀填料的应用 |
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| 引用本文： | 易敏,沈志刚,刘磊,梁帅帅,王帅. 氮化硼纳米片作为抗原子氧腐蚀填料的应用[J]. 北京航空航天大学学报, 2015, 41(8): 1499-1504. DOI: 10.13700/j.bh.1001-5965.2014.0598 |
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| 作者姓名： | 易敏 沈志刚 刘磊 梁帅帅 王帅 |
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| 作者单位： | 1.北京航空航天大学 航空科学与工程学院, 北京 100191 |
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| 基金项目： | 北航博士研究生创新基金，北京市教委共建项目，高等学校博士学科点专项科研基金 |
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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.
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| 关 键 词： | 氮化硼纳米片 原子氧 腐蚀 填料 聚合物 |
| 收稿时间： | 2014-09-26 |
Application of BN nanosheets as atom-oxygen corrosion resistant fillers |
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| YI Min,SHEN Zhigang,LIU Lei,LIANG Shuaishuai,WANG Shuai. Application of BN nanosheets as atom-oxygen corrosion resistant fillers[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1499-1504. DOI: 10.13700/j.bh.1001-5965.2014.0598 |
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| Authors: | YI Min SHEN Zhigang LIU Lei LIANG Shuaishuai WANG Shuai |
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| Affiliation: | 1.School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China2. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| 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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| Keywords: | boron nitride nanosheets atom oxygen corrosion filler polymer |
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