Analysis of Process on Alkali Degreasing.
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- SUYAMA Satoshi
- Presicion Industry Research, Institute of Nagano Pref.
Bibliographic Information
- Other Title
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- アルカリ脱脂液での脱脂過程の解析
- アルカリ ダッシエキ デ ノ ダッシ カテイ ノ カイセキ
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Abstract
Surfactants greatly influence degreasing velocity. To explain the differences due to surfactant type, we analyzed the remaining oil film thickness (T) and the emulsion characteristics induced by the surfactants involved It became clear that T had a strong relationship to the average oil globule diameter r∞ in the oil emulsion, which had been formed at a low concentration. T and (dT/dt)are summarized as follows: T=r∞/R, dT/dt(initial)=-C1*ra(T-r∞)/√r∞, dT/dt(end)=-C2*√r∞.<br>R: Water wetting area ratio, ra: Substantial oil globule diameter of highly concentrated emulsion in boundary film. The degreasing velocity (dT/dt) in all surfactants was decided by ra and r∞ size. These sizes characteristically depended on the surfactant type and oil concentration. The ideal surfactant for high-speed degreasing, should therefore form an oil globule distribution at the smallest size<0.1 and r∞=2, ra>30μm.<br>Little possibility existed; however, that (dT/dt) was controllable by using the specific globule size alone, which had the slowest movement velocity, only when degreasing by the surfactant ABS, etc., had nearly been completed.
Journal
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- Journal of The Surface Finishing Society of Japan
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Journal of The Surface Finishing Society of Japan 49 (2), 185-190, 1998
The Surface Finishing Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679090613120
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- NII Article ID
- 10002446156
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- NII Book ID
- AN1005202X
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- ISSN
- 18843409
- 09151869
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- NDL BIB ID
- 4392719
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed