Peculiarities of the Electret State of Melt-Spun and Melt-Blown Fibrous Polypropylene Materials |
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| Authors: | Kravtsov A G Zotov S V Brunig H |
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| Institution: | (1) Belyi Metal-Polymer Research Institute, Belarus National Academy of Sciences, Gomel', Belarus;(2) Institut fur Polymerforschung, Dresden, D-01069, Germany |
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| Abstract: | The charge state of melt-spun and melt-blown polypropylene fibers is investigated. It is shown that the production of fibers by melt-spinning and melt-blowing technologies promotes the formation of a spontaneous polarization charge. Possible mechanisms of fiber polarization are analyzed. The influence of parameters of the melt-spinning technological process and forced electrization of fibers during their formation in stationary and alternating electric fields on the magnitude and stability of the electret charge is examined. It is established that the application of a corona discharge to fiber polarization is more efficient for the electret state formation. |
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| Keywords: | fibers polypropylene polarization electret effect electret state thermally stimulated current corona discharge |
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