A novel epoxy-based silicon (VECSR) was synthesized from polymethylhydrosiloxane (PMHS) and 1,2-epoxy-4-vinylcyclohexane (VEC) via the hydrosilylation reaction. The structure of VECSR was characterized by FT-IR and 1H-NMR. A series of UV-curable materials were prepared by blending different ratios of VECSR and alicyclic epoxy resin (2021P) and UV curing with triarylsulfonium hexafluoroantimonate salts solution (UVI-6976) as the photoinitiator, and then were tested for performance. The experimental results showed that when the content of VECSR was 10%, the comprehensive mechanical properties of the UV-curable material were the best, i e, the UV-curable sample with a tensile strength of 48.55 MPa, an elongation at break of 3.2%, the UV-curable film with a flexibility of 3 mm, and an impact strength of 20 kg·cm. Compared to a single 2021P system in the absence of VECSR, the UV-curable materials containing VECSR exhibited better hydrophobicity and thermal stability.
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