Water-based bi-component polyurethane coating with long activation period and preparation method and application thereof

The invention provides a waterborne bi-component polyurethane coating with a long activation period and a preparation method and application thereof. The polyurethane coating comprises a component A and a component B. The component A comprises a waterborne hydroxyl acrylic dispersion, an amine-termi...

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Hauptverfasser: SUN JIAKUAN, DENG JUNYING, SUN WEIZU, WU TAIHENG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention provides a waterborne bi-component polyurethane coating with a long activation period and a preparation method and application thereof. The polyurethane coating comprises a component A and a component B. The component A comprises a waterborne hydroxyl acrylic dispersion, an amine-terminated polymer, a sulfonate type surfactant, a waterborne additive, color paste, a solvent and water; and the component B comprises a water-based isocyanate curing agent and a diluting solvent. The coating has the characteristics of long activation period, strong universality and the like, does not cause other negative effects on most of formulas, does not affect the appearance, the tolerance and other related properties, and is suitable for the field of double-component metal corrosion prevention, especially the field with strict requirements on the activation period. 本发明提供一种长活化期水性双组分聚氨酯涂料及其制备方法和应用,该聚氨酯涂料包括A组分和B组分,其中A组分包括水性羟基丙烯酸分散体、端胺基聚合物、磺酸盐型表面活性剂、水性助剂、色浆、溶剂、水;B组分包括水性异氰酸酯固化剂、开稀溶剂。其具有活化期长,通用性强等特点,且对绝大多数配方不会造成其他负面影响