Control of reactions and network structures of epoxy thermosets. Vidil T, Tournilhac F, Musso S, Robisson A, Leibler L. Synthesis and applications of epoxy resins: a review. Cure-on-command technology: a review of the current state of the art. The T g of the epoxy matrix is reduced in the presence of BN nanoparticles. DMTA measurements of dark-cured specimens evidence a heterogeneous epoxy matrix, thus needing higher postcuring temperatures to get homogeneity. The UV-irradiated samples at 40 ☌ reached conversions between 24 and 36% afterward, they were kept under isothermal dark curing (40 ☌) up to 1 month leading to significant conversion increases, independently of the composition and reaching a final conversion between 60 and 70%. The total achieved conversion (65–77%) is lower for the samples containing BN compared to neat epoxy. The thermal postcuring shows two exothermal peaks, being the main one dependent on the temperature of the previous UV curing and on the composition. After the UV curing, the samples were thermally postcured by dynamic heating in the DSC. The conversion reached was strongly dependent on temperature, and lower conversions were obtained in the presence of BN. The epoxy conversion during UV irradiation was determined at seven temperatures, from 30 to 90 ☌. BN-epoxy dispersions containing 5 mass% of BN were obtained by sonication. A difunctional cycloaliphatic epoxy resin was polymerized in the presence of triarylsulfonium hexafluoroantimonate salts (cationic photoinitiator). The influence of boron nitride (BN) nanoparticles on cationic photopolymerization of an epoxy resin at different temperatures was investigated employing photo-DSC.
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