The invention provides waterborne
polyurethane high gloss finish paint for
engineering machinery. The waterborne
polyurethane high gloss finish is prepared from a finish paint main agent component A and a composite curing agent component B, wherein the weight ratio of the component A to the component B is equal to (2-6) to 1; every 100 parts of the component A is prepared from the following raw materials in parts by weight: 50-70 parts of
emulsion, 3-25 parts of
pigment, 5-20 parts of filler, 2-3.5 parts of a
wetting and dispersing agent, 2-6 parts of a cosolvent, 0.2-1 part of a leveling agent, 0.2-1 part of a substrate
wetting agent, 0.2-1 part of a thickener, 0.2-1 part of a pH
regulator, 0.2-1 part of a defoaming agent and the balance of deionized water; the component B is prepared from the following raw materials in parts by weight: 35-75 parts of a curing agent 2655, 20-75 parts of a curing agent 3900, 5-10 parts of a curing agent 401-70 and 20-35 parts of
propylene glycol diacetate. The waterborne
polyurethane high gloss finish paint provided by the invention solves the problem that a thick-film thick
coating is prone to prickly heat, is easy in construction, and does not need a pneumatic mixer; after uniform manual stirring is performed, the deionized water can be added for adjusting the
viscosity for realizing construction; a paint film formed by the finish paint is superior in the environmental
weather resistance aspects such as salt-spray
corrosion,
xenon lamp aging, acid and alkali resistance and
heat resistance compared with the existing same type of paint.