Rubber anti-corrosion coatings are processed by chemically or mechanically processed natural rubber or synthetic rubber as film-forming substances, plus solvents, fillers, pigments, and catalysts.
⑴Chlorinated rubber coating. The coating has good water resistance, salt water and salt spray resistance; it has certain acid and alkali corrosion resistance, and can withstand 10% HCl, H2SO4, HNO3, different concentrations of NaOH and wet Cl2 below 50°C. But it is not resistant to solvents, and has poor aging resistance and heat resistance. The coating is widely used in ships, harbors, chemical industries and other occasions.
⑵ Neoprene coating. The coating is resistant to ozone and chemicals, has outstanding alkali resistance, good weather resistance; oil and heat resistance, and can be made into a peelable coating. The disadvantage is poor storage stability; the coating is easy to change color, and it is not easy to make white or light-colored paint.
⑶ Chlorosulfonated polyethylene rubber coating. It is made by the reaction of polyethylene resin with chlorine and sulfur dioxide (or chlorosulfonic acid). The coating has excellent ozone resistance, remarkable weather resistance, low water absorption, oil resistance, and temperature resistance. It can be used above 120°C without being brittle at -50°C.
