Nanometer self-healing paint and preparation method thereof
A nano- and nano-silica technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as insufficient fullness, poor gloss and color retention of the paint film, and heavy odor
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Embodiment 1
[0034] Nano self-healing paint, which is composed of component A and component B with a weight ratio of 1:1; said component A is composed of 32% by weight of synthetic fatty acid resin, 18% of linear hydroxyl-containing polyester resin (soft linear polyester resin), 0.1% nano-silica, 0.1% defoamer, 0.1% leveling agent, 0.1% dispersant, 0.3% drier, 49.3% solvent; among them, The solvent is 29.3% PMA and 20% n-butyl acetate.
[0035] Component A preparation method is as follows:
[0036] (1) 32% by weight of synthetic fatty acid resin and 18% of linear hydroxy acid ester resin are added to the stirrer and stirred;
[0037] (2) Add 0.1% by weight of nano silicon dioxide, 0.1% of dispersant, and 0.1% of defoamer under the condition of low speed;
[0038] (3) After high-speed dispersion for 5-30 minutes, stir at low speed, add 0.1% leveling agent, 0.3% drier, and 49.3% solvent, stir for 3-10 minutes, and discharge to obtain component A.
[0039] The component B consists of 48% h...
Embodiment 2
[0043] Nano self-healing paint, which is composed of component A and component B with a weight ratio of 1:1. The component A is composed of the following raw materials in weight percentage: 30% synthetic fatty acid resin, 18% linear hydroxyl-containing poly Ester resin, L0.1% nano silica, 0.1% dispersant, 0.1% defoamer, 0.1% leveling agent, 0.3% drier, 3% pigment, 1% dumb powder, 47.3% solvent; Component B is composed of the following raw materials in weight percentage: 46% hexamethylene diisocyanate-based polyisocyanate, 50% n-butyl acetate, 4% ethyl acetate.
[0044] Its preparation method is as follows:
[0045] Preparation of Component A:
[0046] (1) Add 30% by weight synthetic fatty acid resin and 18% linear hydroxy acid ester resin to the stirrer and stir;
[0047] (2) Add 0.1% by weight of nano-silica, 0.1% of dispersant, 0.1% of defoamer, 3% of pigment, and 1% of dumb powder under the condition of low speed;
[0048] (3) After high-speed dispersion for 5-30 minutes...
Embodiment 3
[0052] Nano self-healing paint, which is composed of component A and component B with a weight ratio of 1:1.1; the component A is composed of 30% polyaspartate polyurea, 20% linear Hydroxyl-containing polyester resin, 0.4% nano silicon dioxide, 0.2% defoamer, 0.1% leveling agent, 0.1% dispersant, 0.2% drier, 49% solvent composition; the components B consists of 50% hexamethylene diisocyanate-based polyisocyanate and 50% n-butyl acetate by weight percentage. Its preparation method is identical with embodiment 1.
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