Lightweight and conductive carbon black/chlorinated poly(propylene carbonate) foams with a remarkable negative temperature coefficient effect of resistance for temperature sensor applications

2018 ◽  
Vol 6 (35) ◽  
pp. 9354-9362 ◽  
Author(s):  
Xihua Cui ◽  
Jianwen Chen ◽  
Yutian Zhu ◽  
Wei Jiang
Keyword(s):  
Carbon Black ◽  
Temperature Coefficient ◽  
Propylene Carbonate ◽  
Temperature Sensor ◽  
Negative Temperature Coefficient ◽  
Negative Temperature ◽  
Temperature Sensors ◽  
Sensor Applications ◽  
Conductive Carbon Black ◽  
Poly Propylene

Lightweight and biodegradable crosslinked CB/CPPC foams exhibit a remarkable nearly-linear negative temperature coefficient effect, which has great potential in temperature sensors.

Effect of Different Solvents on Cu Micropatterns Formed via Femtosecond Laser Reduction Patterning

2016 ◽  
Vol 10 (6) ◽  
pp. 934-940 ◽  
Author(s):  
Mizue Mizoshiri ◽  
◽  
Shun Arakane ◽  
Junpei Sakurai ◽  
Seiichi Hata ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Temperature Sensor ◽  
Laser Scanning ◽  
Negative Temperature Coefficient ◽  
Negative Temperature ◽  
Scanning Speed ◽  
Temperature Sensors ◽  
Cuo Nanoparticles ◽  
Laser Scanning Speed ◽  
Laser Reduction

We investigated the effect of different solvents on the Cu micropatterns formed via femtosecond laser reduction patterning. Solvents such as ethylene glycol, 2-propanol, and glycerol were mixed with CuO nanoparticles and polyvinylpyrrolidone. The degree of reduction and the resistivity of the fabricated micropatterns depended on the solvent. Glycerol was the most effective reducing agent. This solution was used to fabricate Cu/Cu2O composite micro-temperature sensors. Cu-rich electrodes and Cu2O-rich sensors were selectively formed by controlling the laser scanning speed at 5 mm/s and 0.5 mm/s, respectively, when the pulse energy was 0.53 nJ. The temperature sensor exhibited a negative temperature coefficient of the resistance, which was consistent with the value for Cu2O.

Negative Temperature Coefficient of PVC Filled with Carbon Black

2011 ◽  
Vol 301-303 ◽  
pp. 1128-1132 ◽  
Author(s):  
Ji Xin Li
Keyword(s):  
Carbon Black ◽  
Temperature Coefficient ◽  
Negative Temperature Coefficient ◽  
Negative Temperature ◽  
Temperature Characteristic ◽  
Polymer Structure ◽  
Point Of View ◽  
Melt Mixing ◽  
Mixing Method ◽  
Different Content

PVC filled with carbon black (CB) composition were prepared by a conventional melt-mixing method. The effects of CB on the negative-temperature-coefficient (NTC) effect and the resistivity-temperature characteristic of PVC/CB composites were studied. Our present research suggests that percolation threshold can be obtained for the content of CB 10%. The reasons of NTC phenomenon were also investigated from point of view of polymer structure. We also discussed relationship between the current and voltage, that is, the I-U characteristic of the composites can be divided into two regions, ohmic and nonohmic according to the different content of CB and voltage.

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