Composite self-cleaning exterior wall nano-emulsion paint and preparation thereof

Abstract

The invention discloses nanometer composite self-cleaning exterior wall latex paint and a preparation method thereof. The latex paint comprises water, a dispersing agent, nanometer titanium dioxide, nanometer silicon dioxide, latex, paint, filling, a film forming addition agent and a mildew-proof disinfectant, wherein the dispersing agent is a nanometer dispersing agent; and the adding amount of the dispersing agent is 0.1 to 0.5 percent of gross weight of the nanometer self-cleaning exterior wall latex paint. The preparation method comprises a pulping process and a paint producing process. Compared with the prior art, through selecting the nanometer dispersing agent, the method ensures that the nanometer self-cleaning exterior wall latex paint is prevented from agglomeration so as to reduce surface tension of a paint film, reduce contact angle and improve the hydrophobic nature of the paint film, thereby making the latex paint have self-cleaning performance. The nanometer titanium dioxide and the nanometer silicon dioxide can be used simultaneously, so that the product has special optical performance, the absorption capability of the paint film to ultraviolet is improved, and weather resisting property of the product can be improved.

Description

technical field [0001] The invention belongs to exterior wall latex paint and a preparation method thereof, in particular to nanocomposite self-cleaning exterior wall latex paint and a preparation method thereof. Background technique [0002] Nano exterior wall latex paint refers to the addition of nanomaterials as a pigment or filler to traditional exterior wall latex paints, using the special physical and chemical properties of nanomaterials to endow exterior wall latex paints with new properties. [0003] Chinese patent CN1287145A discloses exterior wall nano-paint and its preparation method. Its main components are water, wetting and dispersing agent, nano-antibacterial powder, nano-silicon oxide, titanium dioxide, nano-titanium oxide, emulsion, filler, and film-forming aid. Chinese patent CN1380369A discloses a water-based weather-resistant nano-scale exterior wall coating and its preparation method. The invention uses in-situ polymerization or its mixing method to unif...

AI Technical Summary

Problems solved by technology

However, due to the large surface polarity, high surface energy, and small particle size of nano-scale filler particles, they are prone to agglomeration and become micron-scale particles. The use effect of latex paint