External wall body thermal insulation decorative board and preparation method thereof

Abstract

The invention relates to an external wall body thermal insulation decorative board and a preparation method thereof. The external wall body thermal insulation decorative board comprises a finishing coat, a magnesite material layer, a reinforced layer and an inorganic mixed insulating layer, wherein the magnesite material layer, the reinforced layer and the inorganic mixed insulating layer are successively arranged inside the finishing coat; and the reinforced layer is any of a bamboo skin mesh, reed skin mesh and cornstalk outer skin mesh. The layers are laid on a basic moldboard, maintained for 1-3 days after vibrating compaction and rolling leveling, naturally maintained after demoulding and stacking, then cut and colored to obtain the external wall body thermal insulation decorative board. The thermal insulation decorative board has excellent thermal insulation and fireproof performances, high strength, acid-base corrosion resistance, no moisture absorption, halogenation and scum, long weather resistance, strong water resistance, strong self-cleaning, contamination tolerance, anti-vermin, gorgeous and durable finish color and quick installation and use, can synchronously achieve thermal insulation, energy conservation and decorative effect, and can save construction period. The invention has simple production technology, less consumable materials, wide material source, richstorage amount and low price; and the whole production process is in low carbon and environment protection, and has no rubbishes, no exhaust emission, pollution and no waste.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an exterior wall thermal insulation decorative board and a preparation method thereof. Background technique [0002] Building energy conservation and environmental protection are major issues facing mankind at present. In recent years, my country has successively enacted a series of laws and regulations such as "Energy Conservation Law", "Construction Law" and "Code for Thermal Engineering Design of Civil Buildings" to alleviate the contradiction between my country's energy supply and demand and promote the development of building energy conservation. For a single building, its energy saving mainly depends on the insulation system of doors, windows, exterior walls and roof, and the exterior wall usually bears 50-60% of the overall energy saving effect. Effects matter. [0003] my country's current heating energy consumption per unit building area is equivalent to 3 to 4 times ...

AI Technical Summary

Problems solved by technology

Patent document CN 100398763C discloses a kind of exterior wall thermal insulation decorative board and its manufacturing method, but polystyrene board is still used as the thermal insulation layer, and its overall flame retardancy and durability are still unsatisfactory

In addition, although some inorganic composite materials are used as the insulation layer, there are serious quality defects in the products such as moisture absorption, halogen return, frosting, poor water resistance and weather resistance, or poor thermal insulation performance.

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