■ The two polymer materials of polyurethane and epoxy resin have natural resistance to the corrosion of acid and alkali, in addition, the erosion resistance of these materials can also be comparable to the wear-resistant alloy, plus the polymer material has a low density, The easy processing and other characteristics make people explore the wear resistance and corrosion resistance of the three materials of high chromium cast iron, polyurethane and epoxy resin.
Through experiments, it was found that the relative wear resistance of polyurethane is 5.3 times that of high-chromium cast iron, and that of high-chromium cast iron is 10.2 times that of epoxy resin.