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Synthesis of an epoxy functionalized spiroorthocarbonate used as low shrinkage additive in cationic UV curing of an epoxy resin |
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| Authors: | Marco Sangermano Ricardo Acosta Ortiz Lydia Berlanga Duarte Ramiro Guerrero Santos |
| Institution: | a Politecnico di Torino, Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Cso Duca Degli Abruzzi 24, 10129 Torino, Italy b Centro de Investigacion en Quimica Aplicada, Blvd Enrique Reyna #140, 25100 Saltillo, Coahuila, Mexico |
| Abstract: | The synthesis of an epoxy functionalized spiroorthocarbonate (SOC) is reported. The obtained monomer has been used a slow shrinkable additive in cationic UV curing of a commercially available dicycloepoxy resin. A polymer network flexibilization was evidenced by increasing the SOC content in the photocurable formulation. It has been demonstrated that SOC acts as shrinkage reduction additive reaching expansion on volume after polymerization in the presence of 10 wt% of the functionalized spiroorthocarbonate. |
| Keywords: | Cationic UV curing Spiroorthocarbonate Shrinkage Epoxy resin DSC DMTA |
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