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Preparation method of high-strength uniform-hole silicon carbide ceramic membrane
The invention discloses a preparation method of a high-strength uniform-hole silicon carbide ceramic membrane. The method comprises the steps that a monomer, a dispersing agent A and a crosslinking agent are dissolved into deionized water, and stirring is performed to obtain a premixing solution; silicon carbide micropowder I and a sintering additive A are added into the premixing solution, and ball milling is performed to obtain a sizing agent; drying and solidification are performed to obtain a silicon carbide ceramic supporting body; silicon carbide micropowder II, a sintering additive B, a dispersing agent B, a defoaming agent, an organic silicon polymer and deionized water are mixed proportionally, ball milling is performed to obtain a separation layer sizing agent, and the sizing agent is sprayed onto the silicon carbide ceramic supporting body in a rotating mode; adhesive discharging and sintering are performed in a vacuum furnace, and the high-strength uniform-hole silicon carbide ceramic membrane is obtained. The obtained silicon carbide ceramic membrane is uniform in pore size, high in strength and large in infiltration capacity, the separation efficiency is greatly improved, and the preparation method is simple in technology and short in production period and has the wide application prospect.
Preparation method of high-strength uniform-hole silicon carbide ceramic membrane
The invention discloses a preparation method of a high-strength uniform-hole silicon carbide ceramic membrane. The method comprises the steps that a monomer, a dispersing agent A and a crosslinking agent are dissolved into deionized water, and stirring is performed to obtain a premixing solution; silicon carbide micropowder I and a sintering additive A are added into the premixing solution, and ball milling is performed to obtain a sizing agent; drying and solidification are performed to obtain a silicon carbide ceramic supporting body; silicon carbide micropowder II, a sintering additive B, a dispersing agent B, a defoaming agent, an organic silicon polymer and deionized water are mixed proportionally, ball milling is performed to obtain a separation layer sizing agent, and the sizing agent is sprayed onto the silicon carbide ceramic supporting body in a rotating mode; adhesive discharging and sintering are performed in a vacuum furnace, and the high-strength uniform-hole silicon carbide ceramic membrane is obtained. The obtained silicon carbide ceramic membrane is uniform in pore size, high in strength and large in infiltration capacity, the separation efficiency is greatly improved, and the preparation method is simple in technology and short in production period and has the wide application prospect.
Preparation method of high-strength uniform-hole silicon carbide ceramic membrane
HU ZUNKUI (author) / MENG FANJUN (author) / QIN MIN (author) / ZHAO YULONG (author) / WU QIAKUO (author)
2015-12-23
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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