High elasticity-plasticity waterproof caulking sealant used in outdoor and preparation method thereof

The invention discloses a high elasto-plasticity waterproof caulking sealant used in outdoor and a preparation method thereof. The high elasto-plasticity waterproof caulking sealant comprises the following raw materials in parts by mass: 120-140 parts of organic solvent, 60-80 parts of base rubber, 20-40 parts of tackifier, 90-120 parts of softener, 3-5 parts of anti-aging agent, 400-500 parts offiller and 5-10 parts of thickener. The preparation method comprises the following steps: refining the base rubber into lamellas by utilizing a two-roll rubber refining machine; cutting into pieces; placing the organic solvent, the tackifier, the softener, the anti-aging agent and the rubber blocks obtained in the above step into a reactor; stirring and dissolving into adhesive cement; and placing the filler and the thickener into the reactor; stirring, vacuumizing, and discharging to obtain the finished product. The product obtained by the invention has better water resistance, weather resistance, low temperature res