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

Abstract

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 of filler 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 resistance, strong adhesion, better flexibility and excellent sealing performance.

Description

technical field [0001] The invention relates to a sealant and a preparation method thereof, in particular to an outdoor high-plastic elastic waterproof caulking sealant and a preparation method thereof. Background technique [0002] Sealant is a sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of adhesion. It is an adhesive used to fill the configuration gap and seal it. When it is used, it is a fluid or extrudable amorphous material, which can be embedded and closed. Through drying, temperature changes, solvent volatilization, chemical cross-linking and stable bonding with the substrate, it gradually shapes into a plastic material. Solid, viscoelastic or elastic sealing materials. [0003] Sealants are used in different occasions according to their composition, mechanical properties, cohesiveness, anti-aging properties and other properties. Generally, the mechanical properties and displacement resistance re...

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Problems solved by technology

[0003] Sealants are used in different occasions according to their composition, mechanical properties, cohesiveness, anti-aging properties and other properties. Generally, the mechanical properties and displacement resistance requirements of sealants used indoors are relatively low, but there are no Pollution requirements are relatively high. The sealants used outdoors may withstand the alternating effects of sunlight, rain, snow, and wind pressure for a long time. They need to have good water resistance, weather resistance, and low temperature resistance. The water resistance, weather resistance, low temperature resistance, flexibility and sealing performance of outdoor sealants are poor, which cannot meet the requirements of the industry

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