アルカリ脱脂液での脱脂過程の解析

• 須山 聰

  長野県精密工業試験場

書誌事項

タイトル別名

• Analysis of Process on Alkali Degreasing.
• アルカリ ダッシエキ デ ノ ダッシ カテイ ノ カイセキ

抄録

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_&infin;/R, dT/dt_(initial)=-C₁*r_a(T-r_∞)/√r_∞, dT/dt_(end)=-C₂*√r_∞.<br>R: Water wetting area ratio, r_a: Substantial oil globule diameter of highly concentrated emulsion in boundary film. The degreasing velocity (dT/dt) in all surfactants was decided by r_a 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, r_a>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.

収録刊行物

• 表面技術

  表面技術 49 (2), 185-190, 1998

  一般社団法人 表面技術協会

キーワード

• Degreasing Velocity
• Oil Globule Diameter
• Distribution

詳細情報

• CRID: 1390282679090613120
• NII論文ID: 10002446156
• NII書誌ID: AN1005202X
• DOI: 10.4139/sfj.49.185
• ISSN: 18843409
• ISSN: 09151869
• NDL書誌ID: 4392719
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4392719
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可