Abstract
Ceramic membrane has been extensively studied for a half of century. The research of alumina membranes was improved a great deal, however, they have always been considered as an opportunity in commercial product. In this research, submicron alumina powders, AKP-30 were deposited on the porous alumina tube support containing approximately 40% porosity by dip coating. The effects of solid loading, dispersant, and binder system on colloidal process were evaluated. It was found that the thickness of membrane layer depend on the type of binders (latex binder, polyvinyl alcohol binder, and poly (ethylene oxide) polymer binder) and dipping time when the withdrawal speed was constant. The proper suspension of 30 wt.% AKP-30 alumina powder with 18.8 wt.% latex binder provided proper sintered membrane without cracking or delaminating. The porosity and average pore size of coating layer was about 29% and 0.06 μm, respectively at a sintering temperature of 1400°C for 2 hr. The membrane layer was likely to thicken with increasing dipping time. The thickness of membrane after sintering was about 30-40 μm at a few second of dipping time.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
