MyJournals Home  

RSS FeedsMaterials, Vol. 12, Pages 608: Thermal, Mechanical, and Microstructural Study of PBO Fiber during Carbonization (Materials)


18 february 2019 22:02:23

Materials, Vol. 12, Pages 608: Thermal, Mechanical, and Microstructural Study of PBO Fiber during Carbonization (Materials)

Poly(p-phenylene benzobisoxazole) (PBO) fiber shows fascinating properties including excellent mechanical performance, high crystallinity, and fairly good heat resistance as a kind of polymer fiber. Its properties make it a possible candidate as a precursor of carbon fiber. This paper mainly investigates the possibility of yielding carbon fiber from PBO by direct carbonization using a continuous process and multiple properties of yielded fiber treated under different heat treatment temperature (HTT). The results show that PBO fiber was able to sustain an HTT as high as 1400 °C under the inert atmosphere and that the shape of fiber was still preserved without failure. Using thermal gravimetric analysis (TGA) and TGA coupled with mass spectroscopy (TGA-MS), it was found that a significant mass loss procedure happened around 723.3 °C, along with the emission of various small molecules. The mechanical performance first suffered a decrease due to the rupture of the PBO structure and then slightly increased because of the generating of graphite crystallite based on the broken structure of PBO. It was observed that PBO’s microstructure transformed gradually to that of carbonaceous material, which could be the reason why the change of mechanical performance happened. Digg Facebook Google StumbleUpon Twitter
21 viewsCategory: Chemistry, Physics
Materials, Vol. 12, Pages 606: Investigation of Fused Alumina Based-Mold Facecoats for DZ22B Directionally Solidified Blades (Materials)
Materials, Vol. 12, Pages 607: Nonlinear Acoustic Modeling and Measurements during the Fatigue Process in Metals (Materials)
blog comments powered by Disqus
The latest issues of all your favorite science journals on one page


Register | Retrieve



Use these buttons to bookmark us: Digg Facebook Google StumbleUpon Twitter

Valid HTML 4.01 Transitional
Copyright © 2008 - 2019 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Travel Photos Nachrichten Indigonet Finances Leer Mandarijn