BASIC FACTORS IN THE FORMATION AND STABILITY OF NON-SOAP LUBRICATINOYER
Abstract
A program was developed to study C blacks for use as high-temperature grease thickeners. The Shell Roll Test stability at 650 F. was excellent for greases containing C blacks with a high volatile content dispersed in Plexol 201; stability decreased as volatile content decreased. Syneresis, water stability, and stability to mechanical working at room temperature were not profoundly influenced by surface concentration of oxygen complexes. Ion-incorporation of at least a monomolecular layer of low melting inorganic compounds into the surface of high free surface energy solids, particularly silicas, occurred. The treated solids are lowered in surface free energy, but not drastically in surface area, and possess profoundly improved properties for use as high temperature non-soap grease thickeners. The use of an inorganic liquid in evaluating thickener solid properties is discussed. Initially, ion-incorporated silicas were tested as to stability in boiling bromine. A HiSil X303-Cr2O3 silica appears unchanged by this treatment whereas profound changes in untreated HiSil were observed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1961
- Accession Number
- AD0266562
Entities
People
- Albert C. Zettlemoyer
- John J. Chessick
Organizations
- Lehigh University