Waterborne polyurethane resin as well as preparation method and application thereof
A water-based polyurethane and resin technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor stone chip resistance, achieve excellent stone chip resistance, reduce VOC, and reduce environmental impact
Active Publication Date: 2020-11-10
中山大桥化工集团有限公司
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The invention discloses waterborne polyurethane resin and a preparation method and application thereof. The waterborne polyurethane resin is obtained through a reaction of a polyol prepolymer, a hydrophilic monomer, an isocyanate monomer, a functional monomer, a chain extender and organic alkali, and the hydrophilic monomer is at least one of a dihydroxy compound, polyethylene glycol and quaternary ammonium salt; wherein the functional monomer is at least one of trimethylolpropane, pentaerythritol, monoglyceride and unsaturated fatty acid. The automobile water-based floating coat prepared fromthe water-based polyurethane resin has excellent stone beating resistance and paint film hardness, and meanwhile, the prepared automobile water-based colored paint has excellent adhesive force and flexibility, is high in comprehensive performance and can meet the requirements of a higher coating process in the field of automobiles.
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Property | Measurement | Unit |
Acid value | 12.5 | mgKOH/g |
Viscosity | 3300.0 | mPa·s |
Acid value | 15.8 | mgKOH/g |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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