Building outer wall multifunctional thin heat insulation material and preparation method thereof

Abstract

The invention relates to a building outer wall multifunctional thin heat insulation material. The material comprises a component A and a component B, wherein the component A is prepared from 10-20 parts by mass of sodium silicate, 10-20 parts by mass of potassium silicate, 0.05-0.5 part by mass of a surfactant, 0.1-1 part by mass of a pH regulator, 0.1-0.5 part by mass of a reducing agent, 0.1-2 parts by mass of a reaction promoter, 0.01-0.5 part by mass of an anti-freezing agent and 40-55 parts by mass of deionized water; and the component B is prepared from the following components in parts by mass: 2-5 parts of micro-crystalline powder, 2-5 parts of titanium dioxide, 3-8 parts of nano zirconium oxide, 2-10 parts of ceramic micro-beads, 2-5 parts of aerogel, 5-10 parts of superfine hydrophilic silicon dioxide, 5-15 parts of calcium carbonate, 10-20 parts of organic silicon modified styrene-acrylic emulsion, 0.2-2 parts of a defoaming agent, 0.6-3 parts of a dispersing agent and 15-40 parts of deionized water. The coating disclosed by the invention not only can block fine cracks of a concrete outer wall, but also has dual heat preservation effects of reflective insulation and thermal insulation, and has excellent water vapor corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of exterior wall coatings, in particular to a multifunctional thin-body thermal insulation material for exterior walls of buildings and a preparation method thereof. Background technique [0002] As the outermost structure of the building, the exterior wall of the building is mainly formed by solidification of concrete mortar. Under long-term rainwater intrusion, the exterior wall material is prone to cracks and discoloration due to aging, resulting in water seepage or harmful acid gas intrusion, making the concrete mortar Accelerated aging. The insulation bricks inlaid on the outer wall are mainly some porous foam cement or insulation cotton, asbestos, polyurethane foam and other insulation materials wrapped in the cement shell. Once cracks appear on the surface of the insulation brick, it will cause water seepage or intrusion of harmful acid gas, which will accelerate the corrosion rate of foam cement or ...

AI Technical Summary

Problems solved by technology

In addition, due to direct exposure to wind, sun, and rain all year round, the exterior wall paint is prone to weathering, peeling, and eventually flakes off, which cannot maintain its effect for a long time

For example, paints made of acrylic emulsions and fluorocarbon transparent paints that are commonly used at present are prone to delamination and cracking when used outdoors.