Montmorillonite-based nano composite heat insulation coating

Abstract

The invention provides a montmorillonite-based nano composite heat insulation coating and belongs to the technical field of heat insulation materials used in equipment or buildings. The coating comprises the following components in percentage by mass: 5 to 30 percent of montmorillonite, 15 to 30 percent of vinyl acetate/acrylic emulsion or styrene-acrylic emulsion, 30 to 50 percent of water, 5 to 10 percent of nano calcium carbonate, 2 to 6 percent of nano zinc oxide, 2 to 6 percent of nano titanium oxide, 0.01 to 0.1 percent of film-forming auxiliary, 0.1 to 2 percent of antifoaming agent, 0.1 to 2 percent of wetting dispersant, 0.5 to 2 percent of antifreezing agent and 0.1 to 2 percent of leveling agent. A method for preparing the coating comprises the following steps of: under the condition of low-speed stirring, stirring the water, the montmorillonite, the wetting dispersant and a half of the antifoaming agent at a high speed for 1 to 2 hours; adding the nano calcium carbonate, the nano zinc oxide and the nano titanium oxide into the mixture with stirring; stirring at a high speed for 3 hours; under the condition of low-speed stirring, slowly adding the emulsion dropwise and consequently adding the rest antifoaming agent, the film-forming auxiliary, the antifreezing agent and the leveling agent into the mixture; stirring for 3 to 4 hours at a low speed; and finally canning to obtain the finished product of the coating. The montmorillonite-based nano composite heat insulation coating has the advantages of good energy saving effect, stable performance, safe use and convenient application.

Description

Technical field: [0001] The invention belongs to the technical field of thermal insulation materials used in equipment or buildings, and in particular relates to a montmorillonite nanocomposite thermal insulation coating. Background technique: [0002] With the decrease of oil and natural gas, the energy problem has become a bottleneck restricting the economic development of various countries. At present, about one-third of the energy consumption is in the field of construction or equipment. Therefore, countries attach great importance to seeking and formulating effective energy-saving and thermal insulation methods. In this context, the development of thermal insulation coatings is one of the important measures for energy saving and thermal insulation. Ordinary coatings have simple production process, convenient and flexible construction, low thermal conductivity of thermal insulation materials, and remarkable thermal insulation effect, but they are not convenient for const...

AI Technical Summary

Problems solved by technology

The raw material used in the patent CN87102864 is mainly the fibrous material of magnesium aluminum silicate containing water, and there is also a method of adding nano-components to improve the quality of the coating, such as the patent CN 03118030.2, which uses pure acrylic emulsion as the base material and adds nano-scale zinc oxide , silicon oxide and titanium oxide, etc., although they have good scrub resistance, antibacterial and self-cleaning functions, but the thermal insulation effect is poor, and the production process is more complicated

The coating invented by the patent CN92112722.7 is a composite thermal insulation coating compounded by adding fiber materials, mineral materials, fillers and various chemical additives in a specific process. complicated process