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Water-based fluorine-containing polyurethane paint and preparation method thereof
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A technology of polyurethane coatings and polyurethane resins, applied in the field of water-based fluorine-containing polyurethane coatings and its preparation, can solve problems such as difficult to meet high-performance coatings, limited popularization and application, glossy pencil hardness cannot meet basic performance requirements, etc., and achieve easy control, technical Mature, low polarizability effect
Inactive Publication Date: 2015-03-04
佛山市顺德区金冠涂料集团有限公司
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[0003]Existing water-based polyurethane coatings are in terms of gloss (60°specular gloss<70), contact angle to water (<70o), pencil hardness (generally HB) etc. It is still unable to meet the basic performance requirements of HG 2454-2006-T solvent-based polyurethane coatings, and it is difficult to meet the needs of social development for high-performance coatings, which greatly limits its popularization and application
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Embodiment 1
[0070] A water-based fluorine-containing polyurethane coating, calculated in parts by weight, its raw material composition and content are as follows:
[0071] Bayhydur XP 2655 5 copies
[0072] Water-based hydroxyl fluorine-containing polyurethane resin 60 parts
[0138] Bayhydur XP 2655 described therein is the hydrophilic modified aliphatic polyisocyanate curing agent of German Bayer Company;
[0139] Described leveling agent is BYK 346 of BYK company;
[0140] Described wetting agent is the NP-100 of U.S. Dow Company;
[0141] Described thickener is RM 825 of Rohm and Haas Co., Ltd.;
[0142] Described defoamer is the Nopco NXZ of German Henkel Company;
[0143] Described film-forming aid is the dipropylene glycol butyl ether of U.S. Dow Chemical Compa...
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Abstract
The invention discloses a water-based fluorine-containing polyurethane paint and a preparation method thereof. The water-based fluorine-containing polyurethane paint comprises the following raw materials in parts by weight: 5-8 parts of BayhydurXP2655, 60-70 parts of water-based hydroxy fluorine-containing polyurethane resin, 0.05-0.1 part of leveling agent, 1-10 parts of wetting agent, 1-3 parts of thickening agent, 0.2-1 part of defoaming agent, 2-5 parts of film-forming assistant, 0.02-1.0 part of catalyst A and 20-40 parts of deionized water. After being coated, the water-based fluorine-containing polyurethane paint has high film coatinghardness, high gloss and high water contact angle, so that the water-based fluorine-containing polyurethane paint can be used in the traditional application fields of the conventional solvent polyurethane paint, such as the high-performance technical fields of automobiles, woodware, industrial maintenance, plastics, wind-driven generator vanes, solar cells and the like.
Description
technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a water-based fluorine-containing polyurethane coating and a preparation method thereof. Background technique [0002] Solvent-based two-component polyurethane is widely used in wood coatings, automotive original paints, automotive refinishing paints, vehicle paints, industrial coatings and other applications due to its excellent performance. In recent years, due to the concern about environmental protection in various countries around the world, it has become the development trend of coatings to replace solvent-based coatings with water-based coating technology. [0003] Existing water-based polyurethane coatings cannot reach HG 2454-2006-T solvent-based polyurethane coatings in terms of gloss (60° specular gloss <70), contact angle to water (<70o), pencil hardness (generally HB), etc. It is difficult to meet the needs of social development for high-...
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