扫描手机二维码

欢迎您的访问
您是第 位访客

开通时间:..

最后更新时间:..

  • 陈平 ( 教授 )

    的个人主页 http://faculty.dlut.edu.cn/pingchen/zh_CN/index.htm

  •   教授   博士生导师   硕士生导师
  • 任职 : 辽宁省先进聚合物基复合材料重点实验室主任。
论文成果 当前位置: 中文主页 >> 科学研究 >> 论文成果
Effects of surface modification by atmospheric oxygen dielectric barrier discharge plasma on PBO fibers and its composites

点击次数:
论文类型:期刊论文
发表时间:2013-10-15
发表刊物:APPLIED SURFACE SCIENCE
收录刊物:SCIE、EI、Scopus
卷号:283
页面范围:38-45
ISSN号:0169-4332
关键字:DBD plasma; Interfacial adhesion; Humid resistance; Oxygen and air
摘要:In this paper, oxygen dielectric barrier discharge (oxy-DBD) plasma was employed to modify PBO fibers and enhance the interfacial adhesion of PBO fiber/bismaleimide composites. The interlaminar shear strength (ILSS) of the composites was improved greatly to 62.0 MPa with an increment of 41.2% at 30 W/cm(3), 24 s. The SEM images of fracture morphology indicated that the failure place shifted from the interface to the matrix, and the water absorption decreased from 1.96 to 1.53%, the two results demonstrated the improved adhesive strength in other ways. In addition, the ILSS retention ratio of PBO/BMI composites after boiling in water were about 90%, confirming good humid resistance of the composites. The results obtained from XPS and AFM revealed that some polar groups were introduced onto PBO fibers and the surface morphology of PBO fibers was roughened. As a result, the wettability, reactivity and roughness of PBO fibers were all improved, they contributed to the improvement of the ILSS of the composites. The comparisons with air-DBD plasma showed that the chemical changes of PBO fibers were not alike because of different plasma gases. (c) 2013 Elsevier B.V. All rights reserved.

 

辽ICP备05001357号 地址:中国·辽宁省大连市甘井子区凌工路2号 邮编:116024
版权所有:大连理工大学