Effect of novel UV-curing approach on thermo-mechanical properties of colored epoxy composites in outsized dimensions

Abstract

In couple of years, epoxy UV curing has emerged as a necessity, yet it has some limitations, e.g. little curing conversion of thick films, especially with colored additives. Thick dimensions do not allow radiation to penetrate into the sample. Moreover, colored additives cover photoinitiators and reduce their efficiency. Therefore, UV-cured epoxy composites survive only in thin layers. Current research has resolved the issue, through a unique “smart approach,” which resolves the problem by separating the initiation step of the reaction (which is true photo-induced reaction) from the propagation (which is not directly dependent on light). This approach completely photo-cures epoxy thick films with colored additives. Superb filler dispersion has been observed, along with strongly interconnected polymeric network. Augmentation in thermo-mechanical properties has been observed through different instrumental techniques.