北京航空航天大学学报 ›› 2015, Vol. 41 ›› Issue (8): 1499-1504.doi: 10.13700/j.bh.1001-5965.2014.0598

• 论文 • 上一篇    下一篇

氮化硼纳米片作为抗原子氧腐蚀填料的应用

易敏1, 沈志刚1,2, 刘磊2, 梁帅帅1, 王帅1   

  1. 1. 北京航空航天大学 航空科学与工程学院, 北京 100191;
    2. 北京航空航天大学 材料科学与工程学院, 北京 100191
  • 收稿日期:2014-09-26 出版日期:2015-08-20 发布日期:2015-09-08
  • 通讯作者: 沈志刚(1958-),男,江苏无锡人,教授,shenzhg@buaa.edu.cn,主要研究方向为微纳米材料制备应用与空间环境防护. E-mail:shenzhg@buaa.edu.cn
  • 作者简介:易敏(1987-),男,湖南衡阳人,博士研究生,yimin@buaa.edu.cn
  • 基金资助:
    北航博士研究生创新基金(YWF14YJSY052);高等学校博士学科点专项科研基金(20131102110016);北京市教委共建项目

Application of BN nanosheets as atom-oxygen corrosion resistant fillers

YI Min1, SHEN Zhigang1,2, LIU Lei2, LIANG Shuaishuai1, WANG Shuai1   

  1. 1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
    2. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2014-09-26 Online:2015-08-20 Published:2015-09-08

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.

关键词: 氮化硼纳米片, 原子氧, 腐蚀, 填料, 聚合物

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.

Key words: boron nitride nanosheets, atom oxygen, corrosion, filler, polymer

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