Charging characteristics of some powders used in electrostatic coating

Industry Applications, IEEE Transactions(1981)

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摘要
Preliminary studies have been carried out on charging characteristics of two epoxy powders and a polytetrafluoroethylene (PTFE) by measuring charge-to-mass ratios (Q/m). The epoxy powders were charged by corona current and the PTFE by triboelectric. The results indicate that for the PTFE powder, the mean Q/m is inversely proportional to the particle radius, whereas for epoxy powders the pigmentation and the surface chemistry of the particles have a dominant effect on the mean Q/m values. The deposition efficiencies of the epoxy powders were found to be a function of the mean Q/m.
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关键词
Powders,Coatings,Corona,Permittivity,Industry Applications Society,Current measurement,Electrostatic measurements,Pigmentation,Chemistry
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