The invention relates to medium-temperature high-performance water-based damping
coating material and a preparation method of the medium-temperature high-performance water-based damping
coating material. The
coating material is made from binding base material, functional filling material, auxiliary agent and the like. The preparation method adopts a low-speed mixing, dispersion and three-roll
grinding technology, thereby effectively avoiding cross linked deterioration of ternary
polymer emulsion in the binding base material under high temperature because of high-speed mixing and dispersion. The coating material is added with the ternary
polymer emulsion, addition agent and the functional filling material, wherein the ternary
polymer emulsion belongs to rubber emulsion that is beneficial to improve the
damping capacity and the
drying of coating films, and the functional filling material has the functions of damping vibration, reducing noises, retarding
flame and the like. The coating material can form a
network structure through cross linked solidification under low-temperature baking of about 60 degrees, thereby obviously increasing the damping recombination
loss factor, the
flame-retardant heat-insulation performance and the sound-absorbing
noise-reducing property. The water-based damping coating material is widely applied to railway vehicles, has the advantages of high damping recombination
loss factor, small
specific weight, strong
adhesive force, good
flame-retardant performance,
low toxicity level and easy construction, and is not easy to crack in thick coatings.