Heat insulating board and preparation method of heat insulating board

Abstract

The invention provides a heat insulating board. The heat insulating board is characterized by comprising a heat insulating layer and a decorative layer, wherein the heat insulating layer is prepared from the following components: 80 to 100 parts of cement, 20 to 50 parts of expanded perlite, 10 to 30 parts of building gypsum, 30 to 50 parts of sodium silicate, 12 to 30 parts of sepiolite fiber, 1 to 10 parts of a curing agent and 1 to 10 parts of a water repellent; the decorative layer is prepared from the following components: 80 to 100 parts of styrene-acrylic emulsion, 60 to 80 parts of sericite powder, 3 to 20 parts of a dispersant, 3 to 20 parts of a de-foaming agent, 3 to 20 parts of a wetting agent, 3 to 20 parts of iron oxide yellow, 3 to 20 parts of a film forming auxiliary agent and 20 to 50 parts of water. The heat insulating board provided by the invention has the beneficial effects that disadvantages of a traditional heat insulating material of an external wall are broken through; the heat insulating board has good heat insulating and decorating functions; the surface of a coating is dense and the inner part of the coating is loose; meanwhile, the heat insulating board has heat insulating, waterproof and decorating functions, has high heat stability and is one compound type heat preservation and insulation board with excellent performances.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a thermal insulation board and a preparation method thereof. Background technique [0002] With the rapid development of modern industrial civilization, natural resources such as oil, coal, and natural gas have been consumed in large quantities, and energy supply has become relatively tense. The first global oil crisis in 1973 caused oil prices to soar. At this time, the world Energy issues have been widely concerned and listed as one of the four major issues that affect the survival of human beings. [0003] According to statistics, building energy consumption accounts for about 1 / 3 of the global energy consumption. While building energy consumption, a large amount of pollutants such as C02, TSP, S02, NOx and other acid gases are emitted into the atmosphere, resulting in large-scale acid rain and excessive emissions of greenhouse gases. It is causing global warming...

AI Technical Summary

Problems solved by technology

[0005] Existing insulation materials for various walls usually use benzene board, polystyrene particle heat insulation material, rock wool insulation board and phenolic insulation board. The above products and technologies have the following disadvantages: 1. Benzene board or extruded board insulation Although the thermal effect is relatively good, its biggest disadvantage is poor fire resistance. The wind pressure resistance of high-rise building insulation layers, especially low negative wind pressure resistance, is unsafe; Made of molecular materials, it will age and become brittle with the passage of time, the durability is short, and the service life is not the same as that of the wall; when the insulation layer is demolished with the building, it will cause great harm to the environmental safety of the city. Increased the pressure of waste flow on the urban and rural environment; the external adhesive benzene board can not meet the construction requirements of glazed bricks on the outer wall of the building. If there is a fire or the building is more than 20 to 30 years old, the adhesive and plastic expansion nails are used. It will harden and become brittle over time, causing the glazed tiles attached to the outer layer to fall off and cause danger.

The production process of this kind of insulation board is complicated, and it is extremely harmful to the human body. It has the same disadvantages as the benzene board in many aspects such as strength, wind pressure resistance, and construction quality control difficulty, and the high cost is difficult for ordinary users to accept.