Nano multifunctional outer wall heat preservation coating

Abstract

The invention provides a nano multifunctional outer wall heat preservation coating. The coating consists of the following components in percentage by mass: 10 to 20 percent of nano aluminum silicate, 5 to 15 percent of calcium silicate nanowires, 10 to 20 percent of nano calcium carbonate, 15 to 30 percent of vinyl acetate / acrylic emulsion or styrene-acrylate emulsion, 20 to 40 percent of water, 4 to 10 percent of nano titanium dioxide, 0.1 to 1 percent of film coalescing aid, 0.1 to 2 percent of antifoaming agent, 0.1 to 0.5 percent of wetting dispersant, 0.5 to 1 percent of anti-freezing agent and 0.1 to 2 percent of flatting agent. A preparation method for the coating comprises the following steps of: adding the water, the nano aluminum silicate, the calcium silicate nanowires, the nano calcium carbonate, the wetting dispersant and half of the antifoaming agent with low-speed stirring, and stirring for 1 to 3 hours at a high speed; adding other inorganic nano-powder with stirring; stirring the mixture on a multifunctional dispersion machine at the high speed for 1 to 3 hours; dropwise adding an emulsion slowly at a low stirring speed; adding residual antifoaming agent, the filmcoalescing aid, the anti-freezing agent and the flatting agent and stirring for 3 to 5 hours at the low speed; and finally canning to obtain a finished product of the coating. The outer wall heat preservation coating of the invention has the characteristics of high heat preservation and thermal insulation properties, strong adhesive force, high washability and anti-bacterial self-cleaning property, non-toxicity and odorless.

Description

Technical field: [0001] The present invention belongs to the technology field of thermal insulation material used in buildings, and it involves a nano -multi -function exterior wall insulation coating. Background technique: [0002] The thermal insulation coating is a new type of functional paint developed in recent years. It can reduce its internal temperature by using the surface of the building.The first layer of thermal insulation coatings can effectively control the changes in indoor and outdoor temperatures and play a role in insulating insulation. [0003] The existing outer wall coatings are mainly manifested in poor insulation and insulation effects, poor anti -aging ability, easy powder, easy color change, and poor adhesion.It attracted attention.Therefore, it is the key to improving the comprehensive performance of the exterior wall coatings, especially to improve thermal insulation performance.At present, researchers mainly improve the performance of exterior wall coa...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a nano-functional exterior wall thermal insulation coating, which makes up for the problems of poor thermal insulation effect, high water absorption, antibacterial and weather resistance, easy aging, and easy aging in traditional wall coatings. It causes the phenomenon of low strength in the later stage of the product, and at the same time makes up for the defects of polystyrene particle insulation coatings such as flammability, poor fire resistance and high temperature generation of harmful gases, low weather resistance, and high resilience.

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