Heat reflection-obstruction composite energy-saving coating material and preparation method thereof

Abstract

The invention provides a composite energy-saving coating material, which is made of multiple microporous silicate mineral raw materials after surface hydrophobic treatment and reflective fillers. The composite energy-saving coating material enhances the weather resistance and water resistance of a coating, avoids the excessive change of a coefficient of heat conductivity, combines two favorable performances of reflection and heat insulation, integrates two roles of the reflection and obstruction at a suit, has high sunlight reflectivity and good heat insulating effect, avoids repeated multilayer painting operation of an insulation surface and the like, can be formed at a time through painting, and has the advantages of stable performance, uniform coating, low cost, environmental-friendliness and the like. A preparation method is simple in technology and low in cost, saves energy and facilitates industrial popularization and application.

Description

technical field [0001] The invention relates to a coating technology, in particular to a heat reflection-blocking composite energy-saving coating material with high sunlight reflectivity and good heat insulation effect and a preparation method thereof. technical background [0002] Building energy consumption accounts for 30% to 40% of human energy consumption, and the area of ​​newly built houses in my country is as high as 1.7-1.8 billion square meters every year, which exceeds the sum of the annual building areas of all developed countries. Most of them are used for heating and air conditioning. Improving the thermal insulation performance of buildings is an important way to save energy and improve the function of buildings. With my country's emphasis on building energy consumption, building energy conservation is imperative, so exterior wall thermal insulation coatings have emerged as the times require. The use of this coating on buildings can effectively reduce the ind...

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Problems solved by technology

[0003] At present, the two-layer system of reflective top coat and heat-insulating intermediate coat is mostly used on the exterior walls of buildings, and the reflective coatings are mainly solvent-based products, which are harmful to the environment and construction personnel, so their use is subject to certain restrictions , the development of new water-based reflective heat-insulating coatings is the trend of heat-insulation development, but the current water-based heat-insulated coatings due to improper formulation design, such as emulsion varieties, pigments and fillers, and improper selection of additives, etc., make the coating heat insulation effect and reflective effect and general performance improvements are limited

The barrier type heat insulation coating has poor effect on reducing convection and radiation heat transfer, and the insulation layer is thicker, has high water absorption rate, is not resistant to vibration, and has a short service life. In order to form a stable insulation system, another waterproof layer and outer protection are required. Floor

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