title: Nitrogen-Doped Carbon Fiber Paper by Active Screen Plasma Nitriding and Its Microwave Heating Properties.
abstract: In this paper, active screen plasma nitriding (ASPN) treatment was performed on polyacrylonitrile carbon fiber papers. Electric resistivity and microwave loss factor of carbon fiber were described to establish the relationship between processing parameters and fiber's ability to absorb microwaves. The surface processing effect of carbon fiber could be characterized by dynamic thermal mechanical analyzer testing on composites made of carbon fiber. When the process temperature was at 175 °C, it was conducive to obtaining good performance of dynamical mechanical properties. The treatment provided a way to change microwave heating properties of carbon fiber paper by performing different treatment conditions, such as temperature and time parameters. Atomic force microscope, scanning electron microscope, and X-ray photoelectron spectroscopy analysis showed that, during the course of ASPN treatment on carbon fiber paper, nitrogen group was introduced and silicon group was removed. The treatment of nitrogen-doped carbon fiber paper represented an alternative promising candidate for microwave curing materials used in repairing and heating technology, furthermore, an efficient dielectric layer material for radar-absorbing structure composite in metamaterial technology.
authors.affiliation: National Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology , Nanjing 210007, P.R. China.
authors.forename: Naishu
authors.identifier: http://orcid.org/0000-0002-7651-8960
authors.initials: N
authors.lastname: Zhu
authors.affiliation: National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering , Beijing 100072, P.R. China.
authors.forename: Shining
authors.initials: S
authors.lastname: Ma
authors.affiliation: National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering , Beijing 100072, P.R. China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Sun
keywords: active screen plasma nitriding; carbon fiber paper; dynamic thermal mechanical properties; interface; microwave heating; surface treatment