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Resistivity and Thermal Reproducibility of the Carbon Black and SnO2/Sb Coated Titanium Dioxide Filled Silicone Rubber Heaters

✍ Scribed by Eun-Soo Park

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
270 KB
Volume
290
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Summary: Flexible heaters were prepared by extruding platinum‐catalyzed silicone rubber compound with electroconductive carbon black (CB) and SnO~2~/Sb coated titanium dioxide (TiO~2~). Two types of acicular‐shaped TiO~2~ with average particle sizes of 1.7 and 5.2 µm, and two types of spherical‐shaped TiO~2~ with average particle sizes of 0.3 and 2.5 µm were selected. Thermoelectric switching phenomena were investigated for the silicone rubber/CB/TiO~2~ system. Positive temperature coefficient (PTC) was significant when the acicular filler was added rather than spherical ones. Resistivity change and thermal reproducibility of the extruded heaters were also investigated by applying periodically AC voltage of 220 V. The heaters containing acicular‐shaped TiO~2~ exhibited excellent electrical reproducibility.

Scanning electron micrograph of the fractured surface of the extruded composites.

magnified imageScanning electron micrograph of the fractured surface of the extruded composites.

📜 SIMILAR VOLUMES

Resistivity and Thermal Reproducibility
Resistivity and Thermal Reproducibility of High-Density Polyethylene Heaters Filled With Carbon Black
✍ Eun-Soo Park 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 391 KB

## Abstract **Summary:** Various output heaters were extruded with CB‐filled HDPE composites. The effects of crystallinity on the PTC and thermal reproducibility of the quenched, annealed, and E‐beam crosslinked heaters were examined during heating and cooling cycles at an applied voltage of 220 V.