Report on Method of Measuring Penetration Time for Deep Drying Insulating Varnishes

Abstract

The speed of penetration of a number of insulating varnishes was measured by four different methods. Correlations were then made between the penetration times and the viscosities of all the varnishes. Viscosity was found to be a fairly reliable index of penetration time if it is used in the proper equation for each method. The surface tension and wetting ability of these varnishes are apparently of secondary importance in determining the penetration times.

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1942
Accession Number
AD1176392

Entities

People

  • Herbery A Pohl

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Chemistry
  • Compression
  • Diameters
  • Equations
  • Errors
  • Evaporation
  • Impregnation
  • Leading Edges
  • Materials
  • Mathematics
  • Measurement
  • Photographs
  • Surface Tension
  • Vacuum
  • Vacuum Chambers
  • Vacuum Pumps
  • Viscometers
  • Viscosity

Readers

  • Materials Science and Engineering.
  • Surface Coatings Technology.
  • Theoretical Analysis.

Technology Areas

  • Microelectronics