Preparation method of nanometer modified polyurea waterproof coating

Abstract

The invention discloses a preparation method of a nanometer modified polyurea waterproof coating, and belongs to the technical field of preparation of coatings. The preparation method comprises the following steps of mixing diethyl maleate and polyether amine D2000, mixing MDI-50 and polyether D2000, and stirring to react, so as to obtain a pre-polymer, wherein a plant extracting solution containsa plurality of conjugated double bond systems with stronger ability of providing electron pairs. The preparation method has the advantages that the nanometer zinc oxide powder is uniformly dispersedto the surface of a substrate under the polarity adsorption function of the plant extracting solution, and the energy gap width of the nanometer zinc oxide powder is 4.5eV and is equivalent to the energy of most of ultraviolet rays, so as to reduce the strength of ultraviolet rays in the radiation direction; the calcium carbonate crystals in scallop shell powder are crossly and densely stacked, the nanometer zinc oxide is promoted to be filled into the scallop shell powder, and a concentrated solution containing lecithin is continued to add, so that the interface tension of water is reduced; the wetting property of the solid/liquid system is changed, the wetting property of the polyurea waterproof coating is improved, and the application prospect is broad.

Description

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AI Technical Summary

Benefits of technology

This patented technology relates to improved aqueous polyurethane (PU) waterproof paints made up mainly of Poly(Aspirant)-Polyimino Acrylate), Ammonium Sulfite NH2 salt, Borax hydride soluble compound, Copper Nitrone Solvent Extrudable Spray Paint Exposion Kit or Colored Hydrogel Layer Composites for better durability against corrosive environments such as seawater. Additionally, this innovative process involves adding special chemical substances called stabilizers into the mixture beforehand, resulting in more effective dispersion of nanoparticles throughout the paint film. Overall these improvements enhance its properties over existing products while maintain their benefits compared to previous ones.

Problems solved by technology

In this patented new method called NANOXI (Nearly Nonreactive Water) that combines certain chemical reactions together to create polymers made up mostly of urea molecules without harmful substances like chlorine gas. These chemically crosslinked materials exhibiting excellent performance such as durable hardness, impermeability against environmental factors including rainwater leakage, moisture absorption, heat insulation, flexibility under tension, etc. They allow for easy application onto various surfaces while maintain their effectiveness over long periods due to its unique structure.