Waterborne polyurethane super wear-resistant finish paint and preparation process thereof

[0057] Embodiment 1: A kind of waterborne polyurethane super wear-resistant topcoat, each component raw material and corresponding weight parts thereof are as shown in Table 1, and prepare and obtain through the following steps:

[0058] Step 1, high-temperature calcination, calcining the wear-resistant ball powder corresponding to the weight part in a high-temperature reaction furnace at 200°C for 1 hour, and then screening with a 100-mesh sieve to obtain pretreated wear-resistant ball powder;

[0059] Step 2, mix the materials, mix the corresponding parts by weight of water-based polyurethane resin AH-1618, leveling agent BYK346, defoamer BYK024, defoamer Tego901W and polyurethane rheological agent SN612NC in a mixing tank with a disperser and mix evenly. The rotating speed of the disperser is 300rpm, stirring for 20min, then adding deionized water in corresponding parts by weight, maintaining the original rotating speed, stirring for 5min, to obtain the mixed material;

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[0065] Example 2-8: A waterborne polyurethane super wear-resistant finish, the difference from Example 1 is that the raw materials of each component and their corresponding parts by weight are shown in Table 1.

[0066] Each component raw material and parts by weight thereof in table 1 embodiment 1-8

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[0069] Embodiment 9: A kind of waterborne polyurethane super wear-resistant topcoat, the difference with embodiment 1 is that wear-resistant ball powder comprises alumina and quartz powder, and the weight and number ratio of alumina and quartz powder is 1:1.5 , the particle size of alumina is 2 μm, and the particle size of quartz powder is 4 μm.