RELATION BETWEEN FOAMING AND SURFACE PROPERTIES OF DETERGENT-CONTAINING LUBRICATING OIL

The effect of water concentration on the foaming tendency of lubricating oil containing the detergent additives calcium phenate and amide was investigated from a surface chemical standpoint. Foam volume, dynamic surface tension and surface viscosity were measured at various water concentrations. It was proved that the increase of surface viscosity with water content was the main factor affecting foaming in the case of calcium phenate but, in contrast, the Marangoni effect played an essential role in the case of amide.

• Corporate Authors:

  American Society of Lubricating Engineers

  838 Busse Highway
  Park Ridge, IL  United States  60068
• Authors:
  • Tamai, Y
  • Koyama, S
  • Takano, N
• Publication Date: 1978-10

Media Info

• Features: References;
• Pagination: p. 351-355
• Serial:
  • American Society of Lubricating Engineers-Transactions
  • Volume: 21
  • Issue Number: 4
  • Publisher: American Society of Lubricating Engineers

Subject/Index Terms

• TRT Terms: Additives; Diesel engines; Lubricating oils; Viscosity
• Subject Areas: Materials; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00190353
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: May 26 1979 12:00AM