Nanoparticle modified silicon-acrylic compound exterior wall heat isolating coating and preparation method thereof

Abstract

The invention provides a nanoparticle-modified silicon-acrylic composite exterior wall heat-insulating coating, and its raw materials include the following components in parts by weight: 50-60 parts of silicon-acrylic emulsion, 2-5 parts of hollow glass microspheres, and 8-parts of diatomaceous earth 15 parts, 5-10 parts of nano-silica, 6-10 parts of hollow ceramic microspheres, 3-6 parts of nanometer far-infrared ceramic powder, 5-10 parts of heat-reflecting and heat-insulating powder, 5-10 parts of mica powder, aluminum oxide 2-5 parts of powder, 5-10 parts of titanium dioxide, 0.1-0.3 parts of pH regulator, 0.5-1.0 parts of dispersant, 0.2-0.5 parts of defoamer, 1.0-2.5 parts of coalescent, 0.5-0.5 parts of thickener 0.8 parts, 1-3 parts of antifreeze, 0.1-0.3 parts of leveling agent, 0.1-0.3 parts of preservative, 20-50 parts of deionized water. The invention also provides its preparation method, the coating has good properties of nanoparticles, antibacterial properties, alkali resistance, scrub resistance, stain resistance and aging resistance, reflective heat insulation, environmental protection, aesthetics, outdoor weather resistance , Low thermal conductivity and other advantages.

Description

technical field [0001] The invention relates to a heat-insulating paint for exterior walls, in particular to a nano-particle modified silicon-acrylic compound heat-insulation paint for exterior walls and a preparation method thereof. Background technique [0002] According to the heat insulation mechanism, heat insulation coatings can be divided into three types: barrier type, reflection type and radiation type. Among them, the barrier type heat insulation coating is a thick traditional coating, and its heat insulation mechanism is to resist heat transfer, and the technology is relatively mature; Thermal coatings emit the heat of sunlight absorbed by buildings into the air at a certain wavelength in the form of radiation to achieve heat insulation and cooling; the heat insulation mechanism of reflective thermal insulation coatings is to reflect sunlight. [0003] Architectural reflective and heat-insulating coatings are new functional architectural coatings that have been us...

AI Technical Summary

Problems solved by technology

Most of the existing coatings are single-function coatings, and there is no sales of a qualified, high-safety coating that contains both nanoparticles and composite exterior wall heat insulation coatings.