Quick-drying high-solid polyurea coating, its preparation method and application
A high-solid, polyurea technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., to achieve the effects of reducing construction time, excellent mechanical properties, and improving construction production efficiency
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[0068] According to a typical embodiment of the present invention, a method for preparing a quick-drying high-solid polyurea coating is provided. The preparation method comprises the following steps: 1) adding 5 to 15 parts of composite antirust pigment, 10 to 45 parts of pigment and filler, and 1 to 5 parts of auxiliary agent and part of the solvent, grind until the fineness reaches 20 microns, and the temperature reaches 60-65°C; add 0.1-1.5 parts of the adhesion promoter and the remaining part of the solvent, and mix well to obtain component A; 2) 15-35 2 parts of isocyanate curing agent is component B; 3) before use, mix component A and component B to prepare a quick-drying high-solid polyurea coating.
[0069] Preferably, a solvent is used to adjust the viscosity of component A in step 1).
[0070] According to a typical embodiment of the present invention, according to the construction technology, the solid volume of the fast-drying high-solid polyurea coating of the pr...
Embodiment 1 to 6
[0095] The quick-drying high-solid polyurea coating in embodiment 1 to 6 among the present invention is realized by following production technology:
[0096] Component A: Add modified polyaspartic acid ester resin, add water remover, rheological agent, wetting and dispersing agent, leveling agent, anti-rust pigment and pigment filler during stirring; grind until the fineness reaches 20 microns, temperature Reach 60~65℃; add light stabilizer, UV absorber, adhesion promoter and butyl acetate, mix well; adjust viscosity with methoxypropyl acetate.
[0097] B component: polyisocyanate.
[0098] Before use, mix component A and component B according to the weight ratio shown in Table 1 to prepare the quick-drying high-solid polyurea coating of the present invention.
[0099] The compositions, physical parameters and film properties of the quick-drying high-solid polyurea coatings provided in Examples 1 to 6 are shown in Table 1.
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