Forecasting certain physical characteristics and preparation of optically sensitive epoxy polymers

Peculiarities of the structure and properties of highly cross-linked polymer networks

“…Figure 3. Dependences of the density on the molecular weight of the repeating fragment obtained by the hydrostatic weighing method (1,4), calculations (2,4), and according to thermal dilatometric data (3,5) for cured epoxy resins containing azelaic acid (1 ± 3) and oleic acid (4,5). ylic azelaic acid (or monocarboxylic oleic acid) added to the compositions to lengthen the linear fragments or to introduce `dangled' chains are shown in Fig.…”

“…Such a system based on an epoxy resin has been synthesised and studied. 4 The ED-20 epoxy resin was cured with methyltetrahydrophthalic anhydride. To obtain a network with dangled chains, methyltetrahydrophthalic anhydride was partially replaced by oleic acid.…”

“…The results of calculations and experimental studies of such networks have been reported in detail. 4,6 In addition to dangled chains, a network can also contain such defects as isolated loops. Different types of defects are illustrated by Fig.…”