Waterborne nanocomposite thermal insulation coating and preparation method thereof

Abstract

The invention discloses a waterborne nanocomposite thermal insulation coating and a preparation method thereof. The waterborne nanocomposite thermal insulation coating is prepared from the following components in parts by weight: 35-50 parts of waterborne organosilicon modified acrylic emulsion, 5-15 parts of far-infrared ceramic powder, 5-10 parts of infrared reflecting agent, 5-10 parts of nano-ATO slurry, 5-15 parts of rutile titanium dioxide, 3-8 parts of a thermal insulation agent, 0.2-0.5 part of a wetting dispersant, 0.4-0.8 part of a thickener, 0.2-0.4 part of a leveling agent, 0.5-2.5parts of a film forming aid, 0.6-1.6 parts of a silane coupling agent and 15-25 parts of deionized water. The coating provided by the invention is high in reflection efficiency to sunlight, can effectively reflect thermal energy conduction, resist thermal radiation and block infrared heat energy, and is excellent in heat insulation performance, low in energy consumption, remarkable in heat insulation effect and long in service life; furthermore, the preparation method is simple and suitable for large-scale production and application.

Description

technical field [0001] The invention relates to the technical field of nano heat-insulating functional new materials, in particular to a water-based nano-composite heat-insulating coating and a preparation method thereof. Background technique [0002] With the development of my country's construction industry, the importance of energy saving in houses has become increasingly prominent. Ordinary exterior wall coatings will absorb the infrared rays in sunlight and convert them into heat energy, causing the temperature of the coating to rise. raised. Theoretically speaking, as long as the heat radiation can be effectively reflected or blocked, the effect of heat insulation can be effectively achieved, such as the use of silicate materials. Classic wall thermal insulation materials include phenolic resin synthetic materials, polyurethane materials, glass fiber materials, aluminum silicate rock wool, mineral wool, rubber and plastic, cork, perlite, etc. These materials have th...

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Problems solved by technology

[0004] A heat-insulating sunscreen coating disclosed in Chinese patent CN1583894, which is composed of a film-forming agent, mica powder, and hollow ceramic heat-insulating material to form a composite heat-insulating coating that reflects and blocks solar heat, has low thermal conductivity and high heat reflectivity High-end features, but the resin used is a solvent-based resin, which has environmental pollution problems