Nano ZnO/SiO2 sol modified self-cleaning silicone-acrylic exterior wall insulating mould coating

Abstract

The invention discloses a nano ZnO / SiO2 sol modified self-cleaning silicone-acrylic exterior wall insulating mould coating, which is prepared by the following components by weight percent: 30-50% of fluorine modified silicone-acrylic emulsion, 6-10% of a infrared reflection nanomaterial, 3-5% of nano ZnO sol, 3-5% of nano SiO2 sol, 1-3% of a molecular bridge modifying material, 8-15% of hollow ceramic micro-spheres, 8-13% of titanium white, other conventional auxiliary materials with a conventional dosage and the balance of deionized water. The coating in the invention has room temperature infrared emission and sunshine heat reflection functions, can reflect at least 54% of full-spectrum energy in sunshine radiation, converts at least 58% of absorbed sunshine energy into infrared rays which are radiated into air by the mode of an atmospheric window waveband, and reduces indoor heat energy transmitted by the inner surface of a wall body. The coating of the invention also is an exterior wall coating with a lyophobic-oleophobic double lotus effect self-cleaning function, and has high weather ability.

Description

technical field

[0001] The invention relates to an exterior wall heat-insulating paint with self-cleaning function and light-heat reflection function, in particular to nano ZnO / SiO2 sol modified silicon acrylic exterior wall self-cleaning heat-insulation paint. Background technique

[0002] In my country's current energy-saving, thermal insulation technology system for exterior walls of buildings, it has become a consensus in the industry to use exterior wall insulation coatings with light and heat reflection functions to greatly reduce the absorption and accumulation of light and heat on the surface of the topcoat. The light and heat absorption and reflection properties of the topcoat are related to the success or failure of the heat insulation and energy saving system; the object of its action is sunlight to the outside, and the gradient material layer of the heat insulation system to the inside. Avoiding excessive absorption and accumulation of light and heat in the topco...

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