Waterborne polyurethane matt topcoating and preparation method thereof
A water-based polyurethane, matte surface technology, applied in the field of coatings, can solve the problems of a large drop in the performance of the paint film, and achieve the effects of improving hardness, fast drying and reducing costs.
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Embodiment 1
[0042] The embodiment of the present invention provides a kind of waterborne polyurethane matte finish, and described waterborne polyurethane matte finish comprises the following components by weight:
[0043]
[0044] The above-mentioned water-based hydroxyl acrylic emulsion was provided by Shanghai Wanhua Group Co., Ltd. 2003 Hydroxy acrylic dispersion; the curing agent is N3390 from Bayer, Germany; the defoamer is a mixture of 941PL pioneered in France and BYK-028 from BYK, Germany, where the ratio of 941PL and BYK-028 is 1:2; the dispersant is BYK-190 from BYK, Germany; the pigment and filler are 0.1 parts of MA-100 carbon black from Mitsubishi, 10 parts of Dupont R-706 titanium dioxide and 21.9 parts of ultrafine barium sulfate; the substrate wetting agent is Tego-100 The thickener is RW-8M of Rohm and Haas; the anti-sedimentation agent is BYK-AQUATIX-8421 of BYK; the matting powder is American Yabao Pergopak M6.
[0045] The preparation steps of above-mentioned wate...
Embodiment 2
[0052] The embodiment of the present invention provides a kind of waterborne polyurethane matte finish, and described waterborne polyurethane matte finish comprises the following components by weight:
[0053]
[0054] The above-mentioned water-based hydroxyl acrylic emulsion was provided by Shanghai Wanhua Group Co., Ltd. 2003 Hydroxy acrylic dispersion; the curing agent is N3390 from Bayer, Germany; the defoamer is a mixture of 941PL pioneered in France and BYK-028 from BYK, Germany, wherein the ratio of 941PL and BYK-028 is 1:1; the dispersant is BYK-194 from BYK, Germany; the pigment and filler are 0.2 parts of MA-100 carbon black from Mitsubishi, 12 parts of DuPont R-706 titanium dioxide and 22.8 parts of ultrafine barium sulfate; the substrate wetting agent is Tego-510 The thickener is RW-8M of Rohm and Haas; the anti-sedimentation agent is BYK-AQUATIX-8421 of BYK; the matting powder is American Yabao Pergopak M6.
[0055] The preparation steps of above-mentioned wa...
Embodiment 3
[0062] The embodiment of the present invention provides a kind of waterborne polyurethane matte finish, and described waterborne polyurethane matte finish comprises the following components by weight:
[0063]
[0064]
[0065] The above-mentioned water-based hydroxyl acrylic emulsion was provided by Shanghai Wanhua Group Co., Ltd. 2003 hydroxyacrylic acid dispersion; curing agent is N3390 from Bayer, Germany; defoamer is a mixture of 941PL pioneered by France and BYK-028 from BYK, Germany, wherein the ratio of 941PL and BYK-028 is 2:1; dispersant is A mixture of BYK-194 and BYK190 from BYK, Germany, and the mass ratio of BYK-194 and BYK190 is 1:2; the pigment and filler are 0.5 parts of MA-100 carbon black from Mitsubishi, 14 parts of DuPont R-706 titanium dioxide and 10.5 parts part of ultrafine barium sulfate; substrate wetting agent is TEGO-4100 of Tego; thickener is RW-8M of Rohm and Haas; anti-sedimentation agent is BYK-AQUATIX-8421 of BYK; For Albemarle Pergopak...
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