1:1 two-component quick-drying silicone sealant and preparation method thereof

The invention discloses a 1:1 two-component quick-drying silicone sealant, which is characterized in that a group A is prepared by the following steps: by using low-molecular-weight polydimethylsiloxane as a basic prepolymer, adopting stearic acid treated heavy calcium carbonate as a reinforcing material and adopting carbon black powder to maintain blackness, brightness and toughness, and mixing and dispersing the components at a high speed in a high-speed dispersion machine until a fine and high-brightness basic mixture is obtained; then adding a cross-linking agent and a catalyst to enable the material to be exposed in air and to be cured, adding a silane coupling agent to enable the material to maintain good adhesion, adding a chain extender to improve the elongation of the sealant, mixing and dispersing the component B at a high speed to prepare a finished product, and sub-packaging the component A and the component B through a hydraulic sub-packaging machine. When in use, the component A and the componen