Broad-spectrum heat isolating and insulating coating compound and preparation method thereof

Abstract

The invention relates to a broad-spectrum heat isolating and insulating coating compound which is prepared from the following components in percentage by weight: 30 to 40 percent of fluorine modified silicone-acrylate emulsion, 8 to 16 percent of hollow composite ceramic beads, 8 to 15 percent of infrared reflective nano material, 0.5 to 2 percent of molecular bridge modified material and 16 to 20 percent of titanium dioxide. The coating has sunlight radiation function and normal temperature infrared transmission function of a reflective broad-spectrum waveband, can reflect the sunlight radiation of the broad-spectrum waveband, can reflect at least 54 percent of sunlight radiation full-spectrum energy and greatly reduces the absorption of the outer surface of a wall to the sunlight energy; simultaneously, the cooperation of the added hollow composite ceramic beads and other raw materials also converts at least 58 percent of the absorbed sunlight energy into infrared rays to be radiated to the air in an atmospheric window waveband, thereby reducing the indoor heat transfer of the inner surface of the wall.

Description

technical field [0001] The invention relates to a coating composition, in particular to a broad-spectrum thermal insulation coating composition and a preparation method thereof. Background technique [0002] As a composite material system, the thermal insulation layer acts on the sunlight on the outside and the main wall of the building on the inside. Sun exposure is a source of heat energy. When the outer surface of the thermal insulation layer is fully absorbed by sunlight for a long time, a lot of heat energy can still be slowly transmitted into the room through the thermal insulation layer and the wall. [0003] The current energy-saving thermal insulation technology system for building exterior walls in my country uses polystyrene, polyurethane resin foam board or polystyrene particle mortar system, and these systems are all heat-resistant. In order to obtain a smaller heat transfer of the insulation layer, the insulation layer has to be set very thick, but a large am...

AI Technical Summary

Problems solved by technology

In order to obtain a smaller heat transfer of the insulation layer, the insulation layer has to be set very thick, but a large amount of polymer foam material is used in the too thick insulation layer, which will leave fire hazards for the building, and it is still in use. There is a phenomenon that it is easy to crack and fall off. At the same time, the existing coatings only reflect sunlight in a certain band, and do not have the function of converting the absorbed sunlight energy and emitting it.

Chinese patent CN200910085967.3 discloses a reflective heat-insulating coating and its production method. The coating focuses on reflecting the solar radiation heat rays and blocking heat conduction to the inside, so as to reduce the temperature of objects and achieve a certain heat-insulating effect; at the same time, its The overall performance is not ideal, which limits the popularization and application of the coating to a certain extent