Mechanism of Charge Build-up on Polymer Powders after Passage through Metal Pipes

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概要

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• The electrification of polymer powders transported through numerous charging units (up to 12 units) was studied at a mean particle speed ν=7m/s〜26.4m/s and a load ρ=0.006 kg/m^3〜2.5kg/m^3. Each charging unit consisted of a combination of a U bend and a straight pipe. The charge/mass ratio of the powder passing through the units grew exponentially and tended to saturate as the number of units increased. The powder particles were found to be electrified mainly in the U-bend pipes. The electric field E_s caused by the charged particle cloud has a considerable effect on the saturation tendency of nylon 12 powder, but no effect on that or HDPE powder.

• 1984-11-20

著者

• Masui Noriaki

  Department Of Electrical Engineering Faculty Of Science And Technology Science University Of Tokyo

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