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Treatment of Oxygen Dielectric Barrier Discharge Plasma on PBO Fiber Surface and Influence on Its BMI Composites |
LIU Zhe1,2,CHEN Bohan1,CHEN Ping1( ) |
1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China 2. Shanxi Transportation Technology Research & Development Co. Ltd. ,Taiyuan 030032, China |
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Cite this article:
LIU Zhe,CHEN Bohan,CHEN Ping. Treatment of Oxygen Dielectric Barrier Discharge Plasma on PBO Fiber Surface and Influence on Its BMI Composites. Chinese Journal of Materials Research, 2020, 34(2): 109-117.
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Abstract Poly-p-phenylene benzobisoxazole (PBO) fibers surface were treated by oxygen dielectric barrier discharge (DBD) plasma to improve the interfacial adhesion between PBO fibers and bismaleimide (BMI) resin. The inter laminar shear strength (ILSS) of PBO/BMI composites greatly increased from 43.9 MPa to 62.0 MPa after oxygen plasma treatment for 24 s with the optimal parameter of 30 W/m3. After oxygen DBD plasma treatment the O content on the surface of PBO fibers increased significantly, but that of N did not change much, even decreased after being overtreated. The content of functional groups -O-C=O group increased from 0 to 3.16%, while the content of -C-O- increased significantly. The oxygen DBD plasma treatment produced a lot of bumps and ravines on the surface of PBO fibers. The surface morphology of the fibers becomes complex and their surface roughness was enhanced to certain extent. The increase of surface oxygen content, as well as the change of surface morphology and roughness are the important reasons for the increase of ILSS value of PBO/BMI composites. In addition, appropriate DBD plasma treatment will not have a significant adverse impact on the tensile strength of PBO fibers, will not affect its role in composite materials.
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Received: 28 August 2019
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Fund: Liaoning Revitalization Talents Program(XLYC1802085);Funding Project Shanxi Youth Fund Project(201801D221105);Dalian Science and Technology Innovation Fund Project(2019J11CY007);Science and Technology Project of Shanxi Transportation Holdings Group Co. Ltd.(19-JKKJ-64);Major Science and Technology Project of Shanxi Province(20181101019) |
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