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Journal Article

Role of Polymer Science in Developing Materials for Phonograph Discs

Authors: Khanna, Sarwan K.

Journal of the Audio Engineering Society · Volume 24 · Issue 6 · pp. 464–469 · August 1976

Abstract

An introduction to the science of "flow and deformation" of vinyl chloride-vinyl acetate copolymers is given, along with the equipment used to study the theological parameters. The molding of phonograph discs is related to the melt viscosity and melt elasticity. A correct balance of melt viscosity and elasticity appears to be a prerequisite for the successful molding of discs. It is shown that the molecular structure of polymers used in the phonograph record compounds has a significant effect on the melt flow and dynamic properties and, thus, the processing of the compounds. It is suggested that polymer rheology is a very useful study in the development of materials and to understand such problems as improper molding, warpage of discs, wear life of discs, and pressing cycle times.

Details

Publication
Journal of the Audio Engineering Society
Volume
24
Issue
6
Pages
464–469
Publication date
August 6, 1976
Affiliation
RCA Records, Indianapolis, IN (See document for exact affiliation information.)
Type
Journal Article