Synthesis and Characterization of New Polyurea Elastomers by Sol/Gel Chemistry

A series of elastomers based on polyurea chemistry is synthesized by crosslinking amino-terminated polyethers with a triisocyanate using an appropriate solvent, which slowed down the reactivity of the amino groups. Control of the reactivity allows the shaping of the material, and films of defined thickness can be achieved for mechanical testing. The strength of the final network can be tuned by the crosslinking density of the network chemical constitution. The resulting materials show a good thermal stability and promising mechanical enhancement.