Optimization of the Formula on High Performance Rubber Coating by Response Surface Methodology

A two-component high performance rubber coating was prepared with polyaspartic ester and isocyanate curing agent as the main binder. The influence such as the ratio of resin1/resin2, hardener1/ hardener2 and pigment/binder were discussed. With the elongation at break and the abrasion loss of the paint film as responses, the parameters of the coating formula were optimized using the response surface methodology. The appropriate parameters of the coating formula was: resin1/resin2 =0.43, hardrner1/ hardener2=1.05 and pigment binder ratio=1.21. Under the optimal conditions,the elongation at break and the abrasion loss of the paint fihn were 243.4% and 5.56 mg, respectively. The relatively small errors between the predieted and the actual values was only 1.59% and 1.28%, respectively for the elongation at break and the abrasion loss of the paint film.