Two-component silicone sealant for hollow shutters and preparation method of two-component silicone sealant

The invention relates to the technical field of polymer sealing materials, and particularly discloses a two-component silicone sealant for hollow shutters and a preparation method thereof.The two-component silicone sealant for the hollow shutters comprises, by weight, a component A, a component B, a component C, a component D and a component E, the component A is prepared from alpha, omega-dihydroxy polysiloxane, modified nano calcium carbonate, polydimethylsiloxane and maleic anhydride modified polybutadiene; the modified nano calcium carbonate is obtained by carrying out surface modification treatment through a silane coupling agent; the component B comprises carbon black color paste, fumed silica, a cross-linking agent, a coupling agent and dibutyltin dilaurate. The two-component silicone sealant for the hollow blind window has better vertical sag, the optimal surface drying time is 0.11 mm, the optimal tensile adhesive strength is 19 min, the optimal tensile adhesive strength is 2.58 MPa, and the two-comp