Study of the influence of the constituent's ratio on the crosslinking of castor oil modified epoxy resin by polyethylene polyamine

Abstract

Influence of the contents of epoxy resin modified by castor oil (ECO), polyethylene polyamine (PEPA) on the crosslinkmg reaction of ECO by PEPA has been studied and the weight ratio of PEPA/ECO = 0.3 has been determined to be optimal condition for formation of the cured coating having gel fraction, swelling degree, flexibility, adhesion, impact resistance, and relative hardness 83.3 %; 176.2 %; 1 mm, 0 point, 200 kG.cm and 0.25, respectively.