造孔剂法制备硅藻土基多孔陶瓷及其性能研究

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Abstract Diatomite porous ceramics with open porosity of 50%—60% were prepared under 1 150 ℃ for 2 hours by hot die casting process,using diato-mite and sintering additive as raw materials and polystyrene (PS) as organic pore forming agent, respectively. The effect of different weight fractions of sintering additive and PS, as well as the particle size of PS, on the open porosity, pore size and microstructure of samples was studied. The influence of open porosity and pore size on the oil absorption rate of the samples was also investigated. The result showed that ceramics with open porosity of 60% could be fabricated using diatomite with particle size of 25 μm, 13wt% sintering additive and 20wt% PS with particle size of 30 μm. The average oil absorption rate increased with the increase of pore size and open porosity, and the pore size showed stronger effect. The average oil absorption rate of the porous ceramics ranges from 1.1 mg/s to 3.6 mg/s as pore size of ceramics increased from 9.3 μm to 28.8 μm.

Key words： porous ceramics diatomite pore forming agent atomization core

Published: 05 June 2022 Online: 2022-06-08

CLC number:

TQ175.75

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	YU Mingxian
	ZHANG Jingxian

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YU Mingxian,ZHANG Jingxian. Preparation and Properties of Porous Diatomite Ceramics by Pore-forming Method[J]. Materials Reports, 2022, 36(Z1): 21070121-5.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2022/V36/IZ1/21070121

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