Multistage Mechanical Activation of Multilayer Carbon Nanotubes in Creation of Electric Heaters with Self-Regulating Temperature
- Title
- Multistage Mechanical Activation of Multilayer Carbon Nanotubes in Creation of Electric Heaters with Self-Regulating Temperature
- Author
- 장승환
- Keywords
- percolation; multilayer carbon nanotubes (MCNTs); multistage mechanical activation; heat release; modification; elastomers; self-regulating temperature; percolation threshold
- Issue Date
- 2021-08
- Publisher
- MDPI
- Citation
- MATERIALS, Page. 1-16
- Abstract
- :The article deals with research related to the issues of nanomodification of elastomers as a
basis of electric heaters with self-regulating temperature. The effect of multistage mechanical activation of multilayer carbon nanotubes (MCNTs) with graphite on the uniformity of the temperature
field distribution on the surface of nanomodified organosilicon elastomer has been studied. The
influence of the stages of mechanical action on the parameters of MCNTs is revealed. It has been
ascertained that for the MCNTs/graphite bulk material, which has passed the stage of mechanical
activation in the vortex layer apparatus, a more uniform distribution of the temperature field and an
increase in temperature to 57.1 ◦C at the supply voltage of 100 V are typical. The distribution of the
temperature field in the centrifugal paddle mixer “WF-20B” for mixing MCNTs with graphite has
been investigated. It has been found that there is also a thermal effect in addition to the mechanical
action on the MCNTs in the paddle mixer “WF-20B”. The thermal effect is associated with the transfer
of the mechanical energy of friction of the binary mixture MCNTs/graphite on the paddle and the
walls of the vessel. The multiplicity of the starting current Ip to the nominal In (Ip/In) is 5 for the
first sample, 7.5 for the second sample, and 10 for the third sample at the supply voltage of 100 V.
The effect of reducing the starting current and stabilizing the temperature indicates the presence of
self-regulation, which is expressed in maintaining a certain level of temperature.
- URI
- https://www.proquest.com/docview/2565379834?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/168806
- ISSN
- 19961944
- DOI
- 10.3390/ma14164654
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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