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Evaluation of methods for the determinaton of resin advancement in asbestos‐phenolic prepregs
Author(s) -
Shuman W. P.,
Wronski J.
Publication year - 1966
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760060115
Subject(s) - materials science , dissipation factor , dielectric , composite material , dissipation , infrared , asbestos , optics , optoelectronics , thermodynamics , physics
The determination of the state of resin advancement in asbestos‐phenolic prepregs is important to the processor of this material. Many tests have been proposed for measuring this condition. In this article the follwing tests were made on the prepreg and resin extracted from the prepreg to measure advancement: viscosity, Chang Index,‐infrared absorption dielectric constant, dissipation, dielectric constant, and dissipation factor, volume resistivity, and tear strength. Infrared absorption, dielectric constant, and dissipation factor correlated best and were the most sensitive indicators of resin advancement.