Effect of Hydrolysis on High-Purity TiO₂ Size for PTC Thermistor

Abstract:

The effect of self-generated seeded thermal hydrolysis factors, such as TiOSO4 solution concentration, grey aging time, volume ratio of TiOSO4 to pre-adding water, and heating rate on high-purity TiO2 size for PTC thermistor were studied. The samples were characterized by particle size distribution, and SEM. The results show that with increase of TiOSO4 solution concentration, the high-purity TiO2 size decrease gradually, but with increase of grey aging time and volume ratio of TiOSO4 to pre-adding water respectively, the high-purity TiO2 size also increase. The suitable TiOSO4 concentration is 160g/l, grey aging time is 15min, the optimum volume ratio of TiOSO4 to pre-adding water is 4.0:1 and heating rate should be 1.5°C/min.

• Periodical: Advanced Materials Research (Volume 528)
• Pages: 160-163
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.528.160
• Online since: June 2012
• Authors: Zhi Qiang Luo, Jian Qiao Du
• Keywords: High-Purity TiO₂, Hydrolysis, Size

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