Research on preparation and properties of multi-functional anti-corrosion coating used to inner wall of water pond in service area of express highway

The purpose of this study is to develop a multi-functional anti-corrosion coating used to inner wall of water pond in service area of express highway. This coating is composed of two components, the main agent without solvent and curing agent. Firstly, the film forming substance of the main agent is prepared by polyurethane/epoxy resin IPN composite. Secondly, the main agent is composed of the film forming substance, pigment, filler, additives and self-made anti-bacteria, fungusproof and anti-alga multi-functional nanometer-technical inorganic agent. Through pull-off test, compression test, anti-bacteria test and anti-alga test, and so on, comprehensive properties of the coating are systematically researched. The results show that the coating can suppress aquatic organism from adherence, growth and multiplication, and that adhesion, compressive strength, anti-bacteria rate, fungusproof rating, anti-alga rating, anti-cracking performance at low temperature and weathering resistance of this coating are excellent under the optimum formula. In addition, the coating has the characteristics of fast curing (surface drying in 55 minutes) in low temperature (-5°C) and the good adhesive power on the surface of wet concrete and metal bases, which make this coating especially suitable for rapidly painting inner wall of water pond in cold regions.