Accession Number:

AD0677253

Title:

INFLUENCE OF CONCENTRATION OF WATER AND COMPOSITION OF FATTY ACIDS ON STRUCTURE AND PROPERTIES OF SYNTHETIC LUBRICANT GREASES,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1967-12-05

Pagination or Media Count:

16.0

Abstract:

A series of greases were prepared from the residue of the synthesis of synthetic fatty acids acid number 103 mg KOHg, C5-C9 acids 280 mg KOHg, and acid water 248 mg KOHg the dispersion medium was a mixture of Z spindle oil and S machine oil. This composition corresponds to that of commercial synthetic grease. It was found that a change in the water content of the greases in the range of 1 to 5 does not affect their volume mechanical properties or structure, indicating that it is desirable to raise the water content of such greases to 4-5. The structure of hydrated calcium lubricants prepared from soaps of narrow fractions of heat-treated and distilled synthetic fatty acids and their mixtures differs from the structure of fatty and synthetic greases in that it consists of rod-shaped, petal-shaped, and flaky soap crystallites. The greatest thickening capacity is displayed by C16-C20 acids with an average molecular weight of 286-300 and a purity of the fraction of no less than 90-95. A wide boiling fraction of C13-C22 acids with a purity of no less than 98 is recommended for practical application and for producing high-quality synthetic grease. Author

Subject Categories:

  • Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE