Polyurethane coating and preparation method thereof
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A technology for polyurethane coatings and raw materials, applied in polyurea/polyurethane coatings, anti-corrosion coatings, antifouling/underwater coatings, etc., can solve problems such as poor overall performance, achieve excellent physical and mechanical properties, high efficiency, and improve mildew resistance. Effect
Inactive Publication Date: 2018-01-26
雄子(上海)新材料科技有限公司
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The application area is not as wide as two-component coatings, mainly used for floor coatings, anti-corrosion coatings, pre-coil coatings, etc., and its overall performance is not as comprehensive as two-component coatings
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Embodiment 1
[0036] Polyurethane coating raw material (parts by weight):
[0037] Polyurethane coating raw material (parts by weight):
[0038] 30 parts of hydroxyethyl acrylate, 20 parts of butyl acrylate, 2 parts of methacryloxypropyl tris(trimethylsiloxane) silane, 1,3-bis(3-hydroxypropyl)-1,1 , 3 parts of 3,3-tetramethyldisiloxane, 0.5 parts of dibenzoyl peroxide, 0.5 parts of 3-mercapto-1-propanol, 0.3 parts of tetramethylammonium hydroxide, 30 parts of ethyl acetate, 35 parts of propylene glycol methyl ether acetate, 25 parts of 1,6-hexamethylene diisocyanate, 3 parts of inorganic antibacterial agent, and 1.5 parts of dispersant.
[0039] The inorganic antibacterial agent is obtained by stirring and mixing lithium carbonate, aluminum sulfate, and zinc oxide uniformly in a mass ratio of 1:1:1.
[0040] The dispersant is obtained by stirring and uniformly mixing sodium hexametaphosphate, sodium pyrophosphate and sodium trimetaphosphate in a mass ratio of 1:1:1.
[0041] Preparation ...
Embodiment 2
[0047] It is basically the same as Example 1, except that the inorganic antibacterial agent is obtained by stirring and mixing aluminum sulfate and zinc oxide uniformly at a mass ratio of 1:1. Obtain the polyurethane coating of embodiment 2.
Embodiment 3
[0049] It is basically the same as in Example 1, except that the inorganic antibacterial agent is obtained by stirring and mixing lithium carbonate and zinc oxide uniformly at a mass ratio of 1:1. Obtain the polyurethane coating of embodiment 3.
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Abstract
The invention discloses a polyurethane paint and a preparation method thereof. The polyurethane paint is prepared from the following raw materials by weight: 25-35 parts of hydroxyethyl acrylate, 15-25 parts of butyl acrylate, 1-5 parts of methylacryloyloxypropyltri(trimethylsiloxane)silane, 1-5 parts of 1, 3-bis(3-hydroxypropyl)-1, 1, 3, 3-tetramethyldisiloxane, 0.3-0.8 part of dibenzoyl peroxide, 0.3-0.8 part of 3-mercapto-1-propanol, 0.1-0.5 part of tetramethylammonium hydroxide, 25-35 parts of ethyl acetate, 30-40 parts of propylene glycol methyl ether acetate, 15-35 parts of 1, 6-hexamethylene diisocyanate, 1-5 parts of an inorganic antibacterial agent, and 1-5 parts of a dispersing agent. According to the polyurethane paint and the preparation method provided by the invention, through reasonable proportioning, the optimum type and dosage of the dispersing agent and inorganic antibacterial agent suitable for polyurethane paint are selected, so that the polyurethane paint has improved mildew resistance and antibacterial properties, has excellent physical and mechanical properties, temperature resistance, weather resistance and chemical medium resistance and excellent wear resistance, is convenient for construction, and has high efficiency.
Description
technical field [0001] The invention relates to the technical field of coatings, in particular to a polyurethane coating and a preparation method thereof. Background technique [0002] Polyurethane coatings are currently the most common type of coatings, which can be divided into two-component polyurethane coatings and one-component polyurethane coatings. Two-component polyurethane topcoat paint is generally composed of isocyanate prepolymers (also known as low molecular carbamate ester polymers) and hydroxyl resins, commonly known as curing agent components and main agent components. There are many varieties of this type of coating, and the application range is also very wide. According to the difference of the hydroxyl group-containing components, it can be divided into acrylic polyurethane, alkyd polyurethane, polyester polyurethane, polyether polyurethane, epoxy polyurethane and other varieties. Generally, they have good mechanical properties, high solid content, and go...
Claims
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