STUDY ON QUICK CURING METHOD OF POLYSULFIDE RUBBER AT ROOM TEMPERATURE

PART II INVESTIGATIONS ON MECHANICAL PROPERTIES AND INTERNAL STRUCTURE

Abstract

Polysulfide rubbers produced by employing metal oxides as various oxidizing agents have been tested on rigidity-temperature curve under a free torsion pendulum method, stress relaxation, stress-strain curve and solubility.
Judging from the fact that the polysulfide rubbers thus produced have a wide range of “plateau” from 0° to 130°C as well as the elasticity of about 1× 10⁷ dyne/cm² and that their low molecular components are dissolved in the solubility test, the polysulfide rubbers are concluded to have very long molecular structures, with comparatively loose cross-link among molecules.