Aquosity bi-component polyurethane coloured paint and method of manufacturing the same

Abstract

The invention discloses a two-component waterborne polyurethane colored paint and the preparation method. The components of the paint are 5 to 15 water, 0.2 to 0.5 dispersant, 0.1 to 0.3 antifoamer, 0.1 to 0.3 wetting agent, 3 to 25 paints, 0 to 50 fillers, 10 to 80 film forming resins, 0 to 5 film forming additives, 0.1 to 0.3 disinfectant, 0.1 to 0.3 antiflash rust agent, 0.5 to 2 thickeners, 1 to 20 hydrophilically-modified polyisocyanate. The preparation method is that water, dispersant, antifoamer, wetting agent, paints and fillers are dispersed evenly by a sand mill, a ball mill or a high-speed stirrer after stirring, and are added with film forming resins, film forming additives, disinfectant, antiflash rust agent and thickeners to gain the product-component A. The hydrophilically-modified polyisocyanate is component B. The component A and component B are mixed uniformly when using. The invention is characterized in that the invention does not adopt organic solvents, does not contain toxic paints and has no harm on the human body and environment, and the properties can reach the solvent two-component polyurethane paint, which can be produced to the primer, intermediate coat and finishing coat, and can be applied in the surface of the wooden ware, cement and metals.

Description

technical field

[0001] The invention relates to a water-based two-component polyurethane colored paint and a preparation method thereof. technical background

[0002] Polyurethane coatings have many excellent properties, such as strong adhesion, good wear resistance, adjustable elasticity, and excellent acid resistance, alkali resistance, high and low temperature resistance, etc. etc. have been widely used. There are many types and varieties of polyurethane coatings, which can be divided into one-component polyurethane coatings and two-component polyurethane coatings according to the packaging type. One-component polyurethane coatings are easy to use, but have poor performance; two-component polyurethane coatings have good film properties due to effective chemical crosslinking. Hydroxy-cured polyurethane coatings are currently the most widely used polyurethane coatings on the market. One component of this coating is a polyisocyanate-containing prepolymer, and the other is...