ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Electrophoretic deposition or EPD is a well established method for creating decorative andprotective coatings and other structures on various electroconductive substrates. The formation ofthese coatings and structures can be prejudiced by the presence of oversized or contaminantparticles as well as excess or contaminant electrolytes resulting in appearance and performanceproblems in the final product. Nuisance particles come from diverse sources and are an inevitabilityin industrial environments. Efficient and effective particle capture strategies are therefore essential.In water-based EPD processes, control over the content electrolytes and other continuous phasematerials can be accomplished using tangential or cross-flow filtration where the permeate containsthe undesirable materials and can be treated or disposed of outside the system. But for particles andother disperse phase materials, dead-end filtration techniques are required. Here the undesirablematerials are captured, concentrated and retained on the filter medium within the system. Disposalonly occurs as a result of discarding or treating the filter medium itself. Many types of dead-endfiltration media are commercially available. Retention size and materials of construction all haverelevance for system compatibility and effectiveness of particle capture. Practical experience showsthat selection of the correct type of particle filtration optimises process quality. Using inappropriatefilter media can be not just ineffective, but actively detrimental. This paper describes commonlyavailable particle filter systems and how they interact with industrial EPD process
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.314.251.pdf
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