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Copyright of Journal of Henan University of Science & Technology, Natural Science is the property of Editorial Office of Journal of Henan University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To understand the effect of acid solution treatment on poly 1, 4-cyclohexylen dimethylene terephthalate(PCT) fiber, the surface morphology, mechanical properties, aging reaction activation energy and infrared spectrum of PCT fibers before and after sulfuric acid and nitric acid treatment were tested and analyzed by scanning electron microscope(SEM), single fiber strength machine, synchronous thermal analyzer(STA) and Fourier transform infrared spectrometer(FTIR). The results show that the acid immersion treatment can cause the shrinkage of PCT fiber, leading to the surface corrosion of the fibers and the occurrence of dents and cracks; The entering of water molecules into the fiber macromolecule gap of PCT fiber causes a simultaneous decrease in breaking strength and elongation at break; The breaking strength of PCT fiber decreased with the increase of acid solution concentration, treatment time and treatment temperature; Unless at a lower concentration and temperature, the sulfuric acid resistance of PCT fiber is better than that of nitric acid; The sulfuric acid resistance of PCT fiber is weaker than that of the polyphenylene sulfide(PPS) and the polytetrafluoroethylene(PTFE) fiber, and better than that of the polyimide(PI) and the Aramid 1313 fiber; Acid solution treatment can lead to a decrease in the activation energy of the aging reaction and molecular stability of PCT fiber. [ABSTRACT FROM AUTHOR]

Copyright of Fly Ash Comprehensive Utilization is the property of Hebei Fly Ash Comprehensive Utilization Magazine Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)