Next Article in Journal
Surface Modification of Polyester-Fabric with Hydrogels and Silver Nanoparticles: Photochemical Versus Gamma Irradiation Methods
Previous Article in Journal
Strength Development and Strain Localization Behavior of Cemented Paste Backfills Using Portland Cement and Fly Ash
Open AccessArticle

Seamless Tube-Type Heater with Uniform Thickness and Temperature Distribution Based on Carbon Nanotubes Aligned by Circumferential Shearing

by Yoonchul Sohn 1, Dongearn Kim 2,†, Sung-Hoon Park 3,* and Sang-Eui Lee 4,*,†
1
Department of Welding & Joining Science Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea
2
Molds & Dies Technology Group, Korea Institute of Industrial Technology, 7-47 Songdo-dong, Yeonsoo-gu, Incheon 21999, Korea
3
Department of Mechanical Engineering, Soongsil University, 369 Sangdo-ro, Donjak-gu, Seoul 06978, Korea
4
Department of Mechanical Engineering, Inha University, Inha-ro 100, Michuhol-gu, Incheon 22212, Korea
*
Authors to whom correspondence should be addressed.
Materials Research Center, Samsung Advanced Institute of Technology, Samsung-ro 130, Suwon 16678, Korea (previous workplace).
Materials 2019, 12(20), 3283; https://doi.org/10.3390/ma12203283
Received: 12 September 2019 / Revised: 2 October 2019 / Accepted: 4 October 2019 / Published: 9 October 2019
(This article belongs to the Special Issue Advanced Materials for Energy and Environmental Applications)
The uniform temperature distribution, one of the requirements for long-term durability, is essential for composite heaters. An analytical model for temperature distribution of a tube-type heater was derived, and it revealed that thickness uniformity is one order more important than intrinsic material properties such as density, heat capacity, and electrical conductivity of the heating tube. We introduced a circumferential shearing process to fabricate a flexible, seamless tube-type heating layer of carbon nanotube/silicone rubber composite with outstanding uniform distribution of thickness and temperature, which may be attributed to a shorter characteristic dimension in the circumferential direction than in the axial direction. The temperature uniformity was experimentally verified at various temperatures under heating. The difference in measured thickness and temperature in circumferential direction was within ±1.3~3.0% (for tavg = 352.7 μm) and ±1.1% (for Tavg = 138.8 °C), respectively, all over the heating tube. Therefore, the circumferential shearing process can be effective for cylindrical heaters, like a heating layer of a laser printer, which fuse toners onto papers during printing. View Full-Text
Keywords: carbon nanotubes; circumferential shearing; alignment; electrical conductivity carbon nanotubes; circumferential shearing; alignment; electrical conductivity
Show Figures

Figure 1

MDPI and ACS Style

Sohn, Y.; Kim, D.; Park, S.-H.; Lee, S.-E. Seamless Tube-Type Heater with Uniform Thickness and Temperature Distribution Based on Carbon Nanotubes Aligned by Circumferential Shearing. Materials 2019, 12, 3283.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop