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The nature of epoxy resins of the diglycidyl ether of bisphenol A modified by incorporation of 10 to 20 g phr of various linear polysulphides has been examined by 13C n.m.r. spectroscopy (conventional and cross-polarization/magic angle spinning), transmission electron microscopy, scanning transmission electron microscopy and dynamic mechanical thermal analysis. Most, but not all, cured materials feature disperse rubber particles with diameters of < 1 pm. The materials properties of the modified resins have been measured by tensile and impact testing: modification entails improvement but not necessarily either in proportion to the linear polysulphide content or dependent on the demonstrable presence of disperse particles.

Посилання на статтю:

Structural and materials properties of a polysulphide-modified epoxide resin / Terence J. Kemp, Andrea Wilford and Oliver W. Howarth // Polymer. – 1992. – Vol 33. – P. 1860-1871.

Structural and materials properties of a polysulphide-modified epoxide resin - Завантажити.