常压空气等离子体对连续纤维的在线改性*

doi:10.11901/1005.3093.2014.140

材料研究学报

2015, Vol. 29

Issue (1): 10-16 DOI: 10.11901/1005.3093.2014.140

本期目录 | 过刊浏览

常压空气等离子体对连续纤维的在线改性*

贾彩霞¹,陈平^1,²(

),王乾²,王静¹,任荣¹

1. 沈阳航空航天大学辽宁省先进聚合物基复合材料制备技术重点实验室沈阳 110136
2. 大连理工大学化工学院三束材料改性教育部重点实验室大连 116024

On-line Modification of Continuous Fibers by Atmospheric Air Plasma

Caixia JIA¹,Ping CHEN^1,^2,^**(

),Qian WANG²,Jing WANG¹,Rong REN¹

1. Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Shenyang Aerospace University, Shenyang 110136, China
2. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education) & School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

引用本文:

贾彩霞,陈平,王乾,王静,任荣. 常压空气等离子体对连续纤维的在线改性*[J]. 材料研究学报, 2015, 29(1): 10-16.
Caixia JIA, Ping CHEN, Qian WANG, Jing WANG, Rong REN. On-line Modification of Continuous Fibers by Atmospheric Air Plasma[J]. Chinese Journal of Materials Research, 2015, 29(1): 10-16.

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摘要:

采用常压空气介质阻挡放电(DBD)等离子体技术, 分别对PBO、Armos和Twaron 3种高性能连续纤维进行了在线改性处理。使用X-射线光电子能谱(XPS)、扫描电子显微镜(SEM)、原子力显微镜(AFM)、单丝拉伸强度(SFTS)和层间剪切强度(ILSS)等手段对比分析了纤维化学组成、物理形貌与粗糙度、拉伸性能以及纤维增强复合材料界面粘结性能的变化。结果表明: DBD改性后3种纤维表面的氧、氮元素含量以及粗糙程度均增加, 其增强的复合材料ILSS分别提高了18.6%, 10.2%和24.8%。但是3种纤维的表面氧、氮含量增加程度以及受刻蚀程度却有显著的差异。这可能与纤维的分子构成和耐热性能有一定的关系, 综合影响了DBD对复合材料界面粘结性能的改善。同时, 在纤维表面及其复合材料界面性能明显改善的等离子体处理条件下, 纤维的SFTS没有明显的下降。

关键词 ：有机高分子材料, 在线改性, 常压空气等离子体, 表面, 界面

Abstract：

Three high-performance continuous fibers PBO, Armos and Twaron were on-line modified by atmospheric air dielectric barrier discharge (DBD) plasma. Then the modified fibers were characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), atomic force microscopy (AFM), measurements of single fiber tensile strength (SFTS) and interlaminar shear strength (ILSS) in terms of their surface chemical composition, morphology, roughness and tensile strength, as well as interfacial adhesion properties of fiber reinforced composites respectively. Results showed that the oxygen and nitrogen content, and the roughness of fiber surface after DBD plasma modification with PBO, Armos and Twaron were all increased, and the ILSS of their composites were enhanced by 18.6%, 10.2% and 24.8%, respectively. However, it is important to note that there were significant differences in the increment of oxygen and nitrogen content as well as the etching effect of the surface for the three modified fibers, which might be related to the difference of their molecular structures and thermal performances. Apparently, the atmospheric air dielectric barrier discharge (DBD) plasma treatment is proved to be an effective means to improve the surface performance of the fibers while no harm to their SFTS and thereby the ILSS of the composite composed of a resin with the three fibers may obviously be enhanced.

Key words： organic polymer materials on-line modification atmospheric air plasma surface interface

收稿日期: 2014-03-26

基金资助:* 国防“十二五”基础科研项目A352×××××××, 国家自然科学基金51303106, 辽宁省教育厅科学研究一般项目L2014056和沈阳航空航天大学博士启动基金13YB05资助。

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https://www.cjmr.org/CN/10.11901/1005.3093.2014.140 或 https://www.cjmr.org/CN/Y2015/V29/I1/10

表1 PBO, Armos和Twaron纤维的结构与性能

图1 DBD等离子体处理和复合材料制备流程简图

表2 DBD等离子体处理工艺参数

图2 DBD等离子体处理前后PBO、Armos和Twaron纤维的XPS全扫描谱

图3 经DBD等离子体处理后PBO、Armos和Twaron纤维的O、N元素增长率对比

图4 经DBD等离子体处理后PBO、Armos和Twaron纤维的SEM像

图5 纤维/PPESK复合材料的ILSS和增长率对比

表3 DBD等离子体处理前后纤维表面的粗糙度变化

图6 DBD等离子体处理前后纤维/PPESK复合材料的SFTS

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