Modified silyl-terminated polyether (MS Polymer) as a widespread material in adhesive and sealant industries may offer advantages over two-component polyurethane adhesives. MS polymer has a polyether backbone that carries methoxysilyl groups, which can crosslink by moisture from the air at ambient temperatures. The silyl-terminated systems are also isocyanate-free systems. They also can provide better stability and low-temperature extrudability than silicone-based systems. The prepared two-component silyl modified polyether sealant includes component A and component B, and the two components react to cure. The mixing ratios for the prepared sealant are 2:1, 2:2 and 1:2 parts by weight. Component A is based on MS polyether polymer and formulated by plasticizer, filler, coupling agent and carbon black. Component B is produced by plasticizer, filler, UV absorber, pigment, adhesion promoter and a catalyst. Studies have shown that by reducing the component B to component A ratio, shear strength and percentage of elongation were improved.

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