Synthesis and Investigation of Mechanical Properties of the Castable Elastomeric Polyurea for Anti-explosive Applications

Polyurea elastomeric coatings have been widely utilized due to significant increase of their ballistic underlayer in enhancing the duration of constructs which are under impact loading from explosions. Various curing agents and chain extender are used to produce polyurea elastomers by isocyanate terminated prepolymers. One of the most applied curing agents is amine type, and it creates suitable physical and mechanical features. In this research, oxydianiline (ODA) as a curing agent (chain extender) for isocyanate terminated prepolymer which was produced by hexamethylene diisocyanate (HDI) and poly- caprolactone diol (PCL) with molecular weight of 2000 g/mol, used to obtain new polyurea elastomers with the aim of anti explosive coating usage. The structures of samples identified by Fourier transform infrared spectroscopy (FT-IR). Mechanical properties of the samples, such as modulus, tensile strength, elongation at break, resistance to tearing, hardness and adhesion were measured. The results showed that the synthesized samples have a better performance in anticipated objectives in a mechanical manner than other similar foreign products