CaCO3

Epoxy Composites Filled with Natural Calcium Carbonate. 3. Epoxy Composites Obtained in the Presence of Monocarboxylic Derivative of Epidian-6 Epoxy Resin

A monocarboxylic derivative of Epidian-6 with free epoxy and carboxylic end groups (MCDER) has been synthesized using Epidian-6 epoxy resin and sebacic acid. The structure of MCDER was confirmed by a spectral analysis. The thermal stability of MCDER has been established and the formation of cross-linked films based on epoxy-oligomeric mixtures consisting of Epidian-5, TGM-3 oligoesteracrylate, and polyethylene polyamine has been studied in its presence. By means of IR spectroscopy, the chemistry of the mixtures formation has been established.

Epoxy Composites Filled with Natural Calcium Carbonate. 2. Epoxy Composites Obtained in the Presence of Monomethacrylic Derivative of Epidian-6 Epoxy Resin

On the basis of Epidian-6 epoxy resin and methacrylic acid a monomethacrylic derivative of Epidian-6 with free epoxy and methacrylic groups (MMADER) has been synthesized. The structure of MMADER was confirmed by IR spectroscopy. The thermal stability of MMADER has been established. The cross-linking of unfilled epoxy-oligomeric mixtures and mixtures filled with CaCO3 has been studied in the presence of MMADER.

Epoxy Composites Filled with Natural Calcium Carbonate. 1. Epoxy Composites Obtained in the Presence of Monoperoxy Derivative of Epidian-6 Epoxy Resin

Physico-mechanical properties of the products based on filled epoxy-oligomeric mixtures composed of Epidian-5 epoxy resin, oligoesteracrylate TGM-3 and monoperoxide derivative of Epidian-6 epoxy resin (PO) have been investigated. CaCO3 was used as a filler and polyethylene polyamine was a curing agent. The effect of PO and CaCO3 on the gel-fraction content and physico-mechanical properties was examined. Using a scanning electron microscopy (SEM) the morphology of the samples has been studied.