Impact Electrification of High Purity Water on Insulating Solids
Project/Area Number |
63550242
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Research Category |
Grant-in-Aid for General Scientific Research (C)
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Allocation Type | Single-year Grants |
Research Field |
電子材料工学
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Research Institution | Kanagawa Institute of Technology |
Principal Investigator |
SHIMOKAWA Hirofumi Kanagawa Institute of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (50144126)
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Project Period (FY) |
1988 – 1989
|
Project Status |
Completed (Fiscal Year 1989)
|
Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1989: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1988: ¥1,300,000 (Direct Cost: ¥1,300,000)
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Keywords | Super Purity Water / Resistivity / Impact Electrification / Contact Electrification / Streaming Electrification / Insulated Polymer / Surface Potential / 水の抵抗率 / 水の導電率 / 帯電電圧 / 絶縁性高分子膜 |
Research Abstract |
This report presents the results of the measurement of the impact electrification of the purity water and the discussion of the charging mechanism of the insulating solid stirface. The charging potential distribution of the insulating solid surface has been measured as a function of the resiscivity of water (several KOMEGA cm - 10MOMEGA cm), the thickness of solid sample (50mu m - 8mm), and the impact velocity of water (4 - 12m/s). Insulating solid used for this investigation are PTFE(polytetrafluoroethylene), PE(polyetliylene), silicone rubber and cis-14-polyisoprene. It is found that the charging potential of the insulating solid surface increases with decreasing the conductivity of water, increasing the impact velocity of water or increasing the thickness of solid sample. It is also found that the charging potential shows considerable value when the impact velocity is zero. That is, the impact electrification of water consists of the charging due to the impact energy of water and the contact charging. Particularly, the impact electrification is affected the most of the contact electrification. It is considered that these phenomena is related to the admolecular of water on the insulating solid surface.
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Report
(3 results)
Research Products
(7 results)