EXPERIMENTAL RESULTS OF CELLULAR DIELECTRICS FOR TELECOMMUNICATION CABLES,

Abstract

The use of c.p. as telephone wire insulation seems advisable provided that the insulation thickness is higher than 0.24 in. and the ratio 'insulation diameter/conductor diameter' higher than 2. From this limitation derives that a good field of application seems to be that of the trunk cables. Satisfactory results are obtained in the manufacture of small coaxials for telephone systems with transistor repeaters. For the extrusion control the capacitance monitor with tubolar air probe has proved to be useful and convenient. Stress cracking in too high melt index compound is well shown by soapy water tests. The first tests seem to suggest that with low pressure polyethylene a better dispersion on the cells and consequently a greater expansion and a lower permittivity can be obtained. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1959
Accession Number
AD0656229

Entities

People

  • Riccardo Monelli

Tags

DTIC Thesaurus Topics

  • Capacitance
  • Communication Systems
  • Diameters
  • Dielectric Polymers
  • Dielectrics
  • Dispersions
  • Extrusion
  • Insulation
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Repeaters
  • Stress Cracking
  • Telephone Systems
  • Thickness
  • Transistors

Readers

  • Computer Networking
  • Microwave Engineering.
  • Polymer Science and Engineering.

Technology Areas

  • Microelectronics