Polishable high-hardness polyurethane bright white finish and preparation method thereof
A polyurethane, high-hardness technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of scratching the paint film and affecting production efficiency, and achieve the effect of good leveling, good fullness and high gloss
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[0042] A polishable high-hardness polyurethane bright white finish, which is prepared by mixing a main agent, a curing agent and a diluent in a mass ratio of 1-1.4:0.8-1:0.5-0.7, wherein the main agent, curing agent and diluent are respectively It is prepared from the following components and weight ratio:
[0043] Wherein the composition and parts by weight ratio of main agent are as follows:
[0044]
[0045] The titanium white slurry is prepared according to the following components and weight ratios: 6-10 parts of butyl acetate, 25-35 parts of synthetic fatty acid, 1-3 parts of dispersant, 0.4-0.6 parts of fumed silica, titanium White powder 55-65 parts;
[0046] Wherein the component of curing agent and the ratio of parts by weight are as follows:
[0047]
[0048] Wherein the component of diluent and the ratio of parts by weight are as follows:
[0049] Xylene 25-35 parts
[0050] Butyl acetate 50-60 parts
[0051] 10-20 parts of propylene glycol methyl ether ...
Embodiment 1
[0062] Embodiment 1: a kind of polishable high hardness polyurethane bright white topcoat is formed by mixing the main agent, curing agent and thinner in a mass ratio of 1:0.8:0.5, wherein the main agent, curing agent and thinner are respectively composed of the following Components and parts by weight ratio are formulated:
[0063] Wherein the composition and parts by weight ratio of main agent are as follows:
[0064]
[0065] Wherein the component of curing agent and the ratio of parts by weight are as follows:
[0066]
[0067] Wherein the component of diluent and the ratio of parts by weight are as follows:
[0068] Xylene 25 parts
[0069] Butyl acetate 60 parts
[0070] 10 parts of propylene glycol methyl ether acetate.
[0071] The preparation method of the above-mentioned polishable high-hardness polyurethane bright white topcoat comprises the following steps:
[0072] Titanium white slurry is prepared according to the following preparation method: mix 25 p...
Embodiment 2
[0081] Embodiment 2: A kind of polishable high hardness polyurethane bright white topcoat is formed by mixing the main agent, curing agent and thinner in a mass ratio of 1.4:1:0.7, wherein the main agent, curing agent and thinner are respectively composed of the following Components and parts by weight ratio are formulated:
[0082] Wherein the composition and parts by weight ratio of main agent are as follows:
[0083]
[0084] Wherein the component of curing agent and the ratio of parts by weight are as follows:
[0085]
[0086] Wherein the component of diluent and the ratio of parts by weight are as follows:
[0087] Xylene 35 parts
[0088] Butyl acetate 50 parts
[0089] 20 parts of propylene glycol methyl ether acetate.
[0090] The preparation method of the above-mentioned polishable high-hardness polyurethane bright white topcoat comprises the following steps:
[0091] Titanium white slurry is prepared according to the following preparation method: mix 30 p...
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