A kind of thermal insulation and environmental protection wall coating and preparation method thereof

Abstract

The invention discloses a thermal insulation and environment-friendly wall coating, which comprises, by weight, 54-58 parts of water-soluble epoxy resin, 34-37 parts of phase-change heat-insulating microspheres, 2-3 parts of a wetting agent, 1-2 parts of a defoaming agent, 5-6 parts of a dispersing agent, 2-4 parts of a thickening agent, 22-24 parts of a curing agent and 100 parts of water. In thepreparation process of the coating, the phase-change heat-insulating microspheres are added, wherein the phase-change heat-insulating microspheres are filled with paraffin wax in diatomite, titaniumdioxide is bonded on the surface of the paraffin wax through ball milling, and an epoxy resin layer is wrapped outside the titanium dioxide, the surface and internal pore channels of the titanium dioxide composite diatomite are closed and coated through the epoxy resin layer, the titanium dioxide has higher light reflection performance; meanwhile, the diatomite matrix is a silicate material, the heat conductivity coefficient is small; the diatomite is filled with the paraffin wax; the paraffin wax is a phase change material; and phase change occurs when the temperature is raised by light irradiation, so that the function of energy storage is achieved, and the heat insulation performance of the phase change heat-insulating microspheres is further achieved.

Description

technical field [0001] The invention belongs to the field of paint preparation, and relates to a thermal insulation and environmental protection wall paint and a preparation method thereof. Background technique [0002] Architectural thermal insulation coatings are applied on exterior walls or roofs to keep the temperature inside the house within a comfortable range through barriers, reflections, and radiation, thereby reducing energy consumption for air conditioning and heating. However, existing thermal insulation coatings are usually The barrier effect is achieved by using porous low thermal conductivity fillers, and reflective materials are added to the coating. Because the porous low thermal conductivity fillers achieve thermal insulation through the air barrier in the pores, but the air layer cannot store heat, which makes the thermal insulation performance poor, and directly Adding reflective materials to the paint, due to the high cost of the reflective materials, re...

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Problems solved by technology

[0003] The object of the present invention is to provide a heat-insulating and heat-insulating environmental protection wall paint and a preparation method thereof. During the preparation process of the paint, phase-change heat-insulating microspheres are added, wherein the phase-change heat-insulating microspheres are filled with diatomite with paraffin wax, Then bond titanium dioxide on the surface of the paraffin wax by ball milling, and wrap the epoxy resin layer on the outside, and seal the surface and internal pores of the epoxy resin layer titanium dioxide composite diatomaceous earth so that the paraffin wax will not melt and flow out. Titanium dioxide is coated inside the cladding layer. Titanium dioxide has high light reflection performance, which makes the phase change heat-insulating microspheres have a certain light reflection ability. At the same time, the diatomite matrix is ​​a silicate material with a small thermal conductivity. It is filled with paraffin wax, which is a phase change material, and it undergoes a phase change when it is irradiated with light and heats up, thereby realizing the function of energy storage. When covering the epoxy resin layer, the paraffin wax on the surface of the diatomite will not melt and flow out at high temperature, so that the thermal insulation temperature difference of the coating is relatively large, and the coating ability of the epoxy resin further reduces the thermal insulation coefficient of the coating. In order to realize the heat insulation performance of the phase change thermal insulation microspheres, it solves the problem that the existing thermal insulation coatings usually use porous low thermal conductivity fillers to achieve the barrier effect, and add reflective materials to the coating. Air barrier realizes thermal insulation barrier, but the air layer cannot store heat, which leads to poor thermal insulation performance

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