Improving Mechanical and Physical Properties of Ultra-thick Carbon Nanotube Fiber by Fast Swelling and Stretching Process

Cited 2 time in webofscience Cited 0 time in scopus
  • Hit : 133
  • Download : 0
We present a post-treatment method for directly-spun ultra-thick carbon nanotube fibers (CNTFs) with a high linear density of similar to 6 tex (g km(-1)), which can possibly meet industrial-scale productivity. The treatment consists of consecutive steps of swelling of CNTFs in chlorosulfonic acid, stretching, and coagulation. The swelling of CNTFs makes even distribution of the CNT bundles, which are the subunits of CNTFs, and thereby promotes the removal of the interstitial voids and macroscopic pores during subsequent coagulation. The stretching straightens tortuous CNT bundles, and thereby facilitates dense packing of aligned bundles along the fiber axis that are evenly distributed by swelling. However, highly-tortuous CNT bundles in the high linear-density CNTF leads to incremental improvement of structure and properties. The stretching is only effective at stretching ratio (R-S) > 20%, and both tensile strength and electrical conductivity gradually increase as R-S increases, to 27- and 8.7-times at the maximum R-S = 100%. We believe that our study on the influence of R-S on the structure and properties of high linear-density CNTFs provide a new opportunity for designing the industrial process of the post-treatment to commercialize CNTFs.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2021-02
Language
English
Article Type
Article
Citation

CARBON, v.172, pp.733 - 741

ISSN
0008-6223
DOI
10.1016/j.carbon.2020.10.068
URI
http://hdl.handle.net/10203/279917
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 2 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0