Polymer Films with Enhanced Dielectric Properties

Abstract

A program has been completed utilizing copolymerization and polymer blending methods to prepare polymer films with useful dielectric properties. A scaled-up procedure for the synthesis of a-fluoroacrylonitrile and ethyl-a- fluoroacrylate has been developed. These monomers have been polymerized using free-radical methods and the polymer structures fully characterized. Both polymers are atactic. Films of poly(a-fluoroacrylonitrile) exhibit a dielectric constant at 8.9 while films of poly(ethyl-a-fluoroacrylate)have a dielectric constant of 4.0 (50 Hz). Blends of poly(vinylidene fluoride (or trifluoroethylene) with poly(methyl methacrylate) have been shown to be miscible over a wide phase composition. At 80% fluorocopolymer the blend exhibits a dielectric constant at 7. Fluoropolymers, Poly(a-fluoroacrylonitrile), Poly(ethyl-a fluoroacrylate).

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 26, 1993
Accession Number
ADA271148

Entities

People

  • John R. Reynolds

Organizations

  • University of Florida

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alkenes
  • Chemical Synthesis
  • Chemistry
  • Copolymerization
  • Copolymers
  • Dielectric Permittivity
  • Dielectric Polymers
  • Dielectric Properties
  • Dielectrics
  • Films
  • Fluorides
  • Fluoropolymers
  • Materials
  • Mixtures
  • Physical Properties
  • Polymeric Films
  • Polymers

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology