Water-based two-component polyurethane coating and preparation method thereof
A polyurethane coating, water-based two-component technology, applied in the field of coatings, can solve the problem of low reaction speed, achieve the effect of improving hydroxyl activity, mechanical properties and chemical resistance, and fast drying speed
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Embodiment 1
[0060] A water-based two-component paint, comprising a main agent and a hardener, the main agent is composed of the following components in parts by weight:
[0061]
[0062]
[0063] Hardener consists of the following components in parts by weight:
[0064] 80 parts of water-based isocyanate;
[0065] Propylene glycol diacetate 20 parts.
Embodiment 2
[0067] A water-based two-component paint, comprising a main agent, a hardener and a catalyst, the main agent is composed of the following components in parts by weight:
[0068]
[0069] Described hardening agent is made up of the following composition that accounts for weight part:
[0070] 80 parts of water-based isocyanate;
[0071] Propylene glycol diacetate 20 parts.
[0072] The waterborne two-component polyurethane coating of above-mentioned 2 embodiments is obtained by following preparation method:
[0073] The main ingredient preparation method comprises the following steps:
[0074] 1) Grinding color paste
[0075] a. Prepare the raw materials according to the above ratio;
[0076] b. Add 80% deionized water in the formula amount into the dispersion container, slowly add the dispersant in the formula amount under stirring, stir and disperse to a uniform state;
[0077] c. Under stirring, slowly add the formula amount of titanium dioxide, precipitate barium su...
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