The invention relates to an environment-friendly water-based double-component
polyurethane floor
coating. A component I is water-based aliphatic
isocyanate containing 100% by
mass of
solid content, a
component II comprises the following components by weight parts: 10-18 parts of water, 4-10 parts of modified polymeric dispersant, 0.1-0.3 parts of non-ionic and / or anionic
wetting agent, 2-20 parts of
pigment, 3-15 parts of filler, 40-70 parts of acrylic hydroxyl
emulsion, 3-6 parts of functional resin, 0.1-0.5 parts of polyether modified
siloxane defoamer, 0.1-0.3 parts of polyether modified
siloxane flatting agent, 0.1-0.3 parts of heterocyclic
fungicide and 0.2-1.0 part of
solvent-free
polyurethane thickening agent. When the floor
coating is used, the component I and the
component II are mixed according to the
mass ratio of the component I to the
component II being 1:(5-6). According to the
coating, all the performances of the coating completely meet the requirements of
solvent-based floor coating, the
artificial aging resistance is excellent, and the
volatile organic compound content in the water-based double-component
polyurethane floor coating is obviously lower than that of single-component water-based polyurethane floor coating, and the environmental requirement is met.