A series of CO2 based polyurethane acrylate UV cured resins (PUA) were prepared using CO2 based poly(propylene carbonate) diol (PPCD), dicyclohexylmethane diisocyanate (HMDI), hydroxypropyl methacrylate (HPMA), 2,4,6-trimethylbenzoyl-dimethylphenyl phosphine oxide (TMO) and other materials. The structure and properties of UV cured resin were analyzed through tests such as FTIR, XRD, mechanics, TG and viscosity. The results showed that as the molar ratio n(- NCO):n(- OH) of isocyanates in HMDI to hydroxyl groups in PPCD increased, the contact angle, hardness and tensile strength of the PUA membrane increased, while the resin viscosity, film water absorption and elongation at break decreased. When the n(- NCO):n(- OH) was 2:1, the UV curable resin (PUA-4) showed the best comprehensive performance with the film tensile strength of 32.9 MPa and elongation at break of 139.2%. The contact angle of the film was 86.9°, the 24h water absorption was 8.20% and the Shore hardness was 94HA.