TiO<sub>2</sub>添加量对黄土基陶瓷膜支撑体性能的影响

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Abstract Taking Luochuan loess with an average particle size of 38.78 μm as the aggregate, lignocellulosic (LCS) as pore former and binder, titanium dioxide (TiO₂) as the sintering assistant, the rolling molding method was used to prepare the tubular porous loess ceramic support, which were characterized by pure water flux, flexural strength, acid/alkali resistance, analysis of crystal phase composition and observation of surface morphology. The effects of TiO₂ content on the properties of the ceramic membrane support were investigated. The results show that the addition of TiO₂ can promote the sintering and densification of loess ceramic membrane support. When the sintering temperature is 1 050 ℃ and TiO₂ content is 4%, the flexural strength is 31.97 MPa, the pure water flux is 3 487.27 L/(m²·h·MPa), the porosity is 33.48%, the average pore size is 3.14 μm, the mass loss rate of acid/alkali corrosion is only 0.14% and 0.13%, and the surface of the support has a uniform grain size and more micropores.

Key words： loess ceramic membrane support titanium dioxide (TiO₂) sintering assistant addition amount

Received: 08 April 2019 Published: 14 November 2019

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	SHEN Zao
	ZHOU Guangrui
	TONG Zhi
	WANG Jiayue
	YAN Xiao

Cite this article:

SHEN Zao,ZHOU Guangrui,TONG Zhi, et al. Effect of TiO₂ content on properties of loess ceramic membrane support[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(5): 485-490.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I5/485

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