Robust cellulose-carbon nanotube conductive fibers for electrical heating and humidity sensing

Cellulose ◽  
2021 ◽  
Author(s):  
Jianhua Ma ◽  
Haihong Pu ◽  
Pengxin He ◽  
Qiangli Zhao ◽  
Shaoxue Pan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrical Heating ◽  
Humidity Sensing ◽  
Conductive Fibers

scholarly journals Highly Sensitive Temperature and Humidity Sensor Based on Carbon Nanotube-Assisted Mismatched Single-Mode Fiber Structure

Micromachines ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 521 ◽  
Author(s):  
Yuan ◽  
Qian ◽  
Liu ◽  
Wang ◽  
Yu
Keyword(s):  
Carbon Nanotube ◽  
Humidity Sensor ◽  
Single Mode ◽  
Small Region ◽  
Single Mode Fiber ◽  
Fiber Structure ◽  
Humidity Sensing ◽  
Highly Sensitive ◽  
Temperature And Humidity ◽  
Stable Performance

Here we report on a miniaturized optical interferometer in one fiber based on two mismatched nodes. The all-fiber structure shows stable performance of temperature and humidity sensing. For temperature sensing in large ranges, from 40 to 100 °C, the sensor has a sensitivity of 0.24 dB/°C, and the adjusted R-squared value of fitting result reaches 0.99461 which shows a reliable sensing result. With carbon nanotubes coating the surface of the fiber, the temperature sensitivity is enhanced from 0.24561 to 1.65282 dB/°C in a small region, and the performance of humidity sensing becomes more linear and applicable. The adjusted R-squared value of the linear fitting line for humidity sensing shows a dramatic increase from 0.71731 to 0.92278 after carbon nanotube coating, and the humidity sensitivity presents 0.02571 nm/%RH.

Enhanced humidity-sensing response of metal oxide coated carbon nanotube

2015 ◽  
Vol 223 ◽  
pp. 11-17 ◽  
Author(s):  
Daewoong Jung ◽  
Jinhong Kim ◽  
Gil S. Lee
Keyword(s):  
Carbon Nanotube ◽  
Metal Oxide ◽  
Humidity Sensing ◽  
Coated Carbon

A reliable and highly conductive carbon nanotube/thermoplastic polyurethane composite with an enhanced segregated structure for electrically driven heater applications

2020 ◽  
Vol 8 (26) ◽  
pp. 8814-8822
Author(s):  
Wen-Jin Sun ◽  
Chang-Ge Zhou ◽  
Li-Chuan Jia ◽  
Yue-Yi Wang ◽  
Yun-Peng Zhang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Thermoplastic Polyurethane ◽  
Electrical Heating ◽  
Heating Performance ◽  
Polyurethane Composite ◽  
Segregated Structure

The excellent stabilities of electrical conductivity and electrical heating performance after repeated processing was realized by enhanced segregated structure.

Carbon Nanotube Fabric-Based Composites for Development of Multifunctional Structures

MRS Advances ◽  
2019 ◽  
Vol 4 (57-58) ◽  
pp. 3123-3132
Author(s):  
Michael B. Jakubinek ◽  
Yadienka Martinez-Rubi ◽  
Behnam Ashrafi ◽  
Nicholas Gumienny-Matsuo ◽  
Daesun Park ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Fire Resistance ◽  
Electromagnetic Shielding ◽  
Electrical Heating ◽  
Low Density ◽  
Filtration Method ◽  
Industrial Grade ◽  
One Step

ABSTRACTCarbon nanotubes (CNTs) possess impressive properties along with low density. Integration of CNTs in the form of fabrics or other preformed assemblies simplifies their handling and allows for the higher CNT content needed to better leverage their properties in multifunctional structures. Here we describe production of non-woven CNT-polyurethane fabrics made from industrial-grade CNTs via a one-step filtration method. Individual sheets were scaled to 30 cm x 30 cm size and subsequently used to fabricate thicker composites, including via lamination with itself to produce simple panels and with other materials to further tailor the nanocomposite properties and address several example applications including electrical heating, fire resistance, electromagnetic shielding, and a skin for stretchable morphing structures.

Flexible Thin Carbon Nanotube Web Film for Curved Heating Elements Under High Temperature Conditions

2021 ◽  
Vol 21 (3) ◽  
pp. 1809-1814
Author(s):  
Ji-Hwan Ha ◽  
Hyeonjun Song ◽  
Hyunwoo Kim ◽  
Dongearn Kim ◽  
Youngjin Jeong ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Temperatures ◽  
Rapid Heating ◽  
Electrical Heating ◽  
Thin Carbon ◽  
Pure Carbon ◽  
Heating Uniformity ◽  
Heating Test ◽  
Thermal Stability Of

Heating elements need a rapid heating property and long-term cycle stability when subjected to extreme temperatures. Carbon nanotube-based films can be used as ideal heating units owing to their superior electrical and thermal properties. However, carbon nanotube polymer composites are not appropriate for extreme conditions such as high temperatures (300 °C) due to the poor thermal stability of the polymer matrix. In this study, we fabricated a carbon nanotube web film, comprising heating elements consisting of pure carbon nanotubes, through the direct spinning method. The carbon nanotube web film has a microscale thickness. The carbon nanotube web film showed flexibility at high temperatures, while a fracture occurred in the case of the carbon nanotube polymer composite. We conducted electrical heating experiments on the curved carbon nanotube web film to observe the heating uniformity and flexibility. The heating test is conducted on various curved form heaters. The carbon nanotube web film showed rapid heating properties and a uniform heat distribution (temperature departure of less than 3%) without thermal aggregation. The curved heating units can be utilized in various applications such as functional clothes and de-icing systems having curved surfaces.

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