Relationship between spray electrification of ethyl acetate and spraying conditions

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  • Endo Yuta
    National Institute of Occupational Safety and Health, Japan, Electrical Safety Research

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  • 酢酸エチルの噴霧帯電量と噴霧条件の関係
  • サクサン エチル ノ フンム タイデンリョウ ト フンム ジョウケン ノ カンケイ

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<p>In our previous study on the spray electrification of liquids, which may cause explosions or fires in facilities handling combustible organic solvent, we found that the charge generated by the spray electrification of ethyl acetate was larger than that of other liquids and that the spray electrification depended strongly on the conductivity of the liquid and peaked at 10-8 S/m which is equivalent to the conductivity of ethyl acetate. In this study, we investigated the relationship between the spray electrification and various conditions for five different liquids including ethyl acetate. The results showed that the specific spraying conditions increased the charge of ethyl acetate and that the relationship between the charge and the conductivity of liquids was in the general agreement with the result of the previous study. However, the charge of ethyl acetate was significantly larger than that of the liquid sample used in the previous study （mixture of mineral spirit and conductivity improving additive）, indicating that factors other than conductivity may also have a significant effect on the spray electrification.</p>

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