Anti-ageing nano-modification outer wall emulsion paint and preparation method thereof

Abstract

The invention discloses anti-ageing nano-modification outer wall emulsion paint and a preparation method thereof. The outer wall emulsion paint is prepared from the following components in parts by weight, 30-50 parts of nanometer silica-modification acrylic resin, 7-9 parts of titanium dioxide, 6-8 parts of silica fume, 10-18 parts of titanium dioxide, 1-3 parts of aluminium stearate, 1-3 parts of polydimethylsiloxane, 4-8 parts of emulgator, 0.5-1 part of flatting agent, 14-18 parts of epoxy resin emulsion, 1-2 parts of anti-ultraviolet agent and 3-5 parts of hydroxypropyl methyl cellulose.According to the anti-ageing nano-modification outer wall emulsion paint and the preparation method thereof, nanometer silica is adopted for modifying acrylic resin, the nanometer silica can be used for forming a three-dimensional net-shape structure, and the net-shape structure can be formed when the paint is dried, so that the stability of the anti-ultraviolet agent and a pigment system is maintained, the ageing effect of ultraviolet light on dye is reduced, the color of the paint can remain unchanged over the long term, moreover, the nanometer silica has very high ultraviolet and infrared reflection property, a shielding effect of the paint is formed when the nanometer silica is added into the paint, and thus the purposes of ultraviolet ageing resistance and thermal ageing resistance are achieved.

Description

technical field [0001] The invention belongs to the technical field of wall paint, in particular to an anti-aging nano-modified latex paint for exterior walls and a preparation method thereof. Background technique [0002] Latex paint is based on synthetic resin emulsion, uses water as the dispersion medium, adds pigments, fillers and additives, and is made through a certain process. It is one of the main decorative materials used for wall surfaces in home decoration. It occupies a considerable proportion in basic decoration. [0003] For example, the patent application number CN201510473227.2 discloses a new type of interior wall latex paint with good waterproof, anti-corrosion and anti-aging performance, which is characterized in that it is prepared from the following raw materials in parts by weight: VAE emulsion 20-24, fatty acid formazan Ester 3-5, vinyl acetate 6-8, defoamer F-111-1-2, fatty alcohol polyoxyethylene ether ammonium sulfate 1.5-2, sodium bentonite 5-8, n...

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Problems solved by technology

[0004] However, the above scheme has the following defects in use: the exterior wall latex paint is exposed to a large range during use, and it is exposed to ultraviolet light for a long time, which causes accelerated aging of the wall paint liquid, showing a yellowing phenomenon, and affecting the quality of the paint surface