Inorganic composite A-class non-combustible insulation board and preparation method thereof

Abstract

The invention discloses an inorganic composite A-class non-combustible insulation board. The insulation board comprises an insulation core material layer. An interface reinforcement layer is arranged on the outer surface and the inner surface of the insulation core material layer respectively, and each of the interface reinforcement layers comprises an alkali resistant screen cloth layer on the inner layer and a polymer water-proof anti-crack mortar layer on the outer layer. Meanwhile, the ratio of components of the insulation core material layer and the polymer water-proof anti-crack mortar layer is disclosed. The invention further discloses a preparation method of the inorganic composite A-class non-combustible insulation board. The inorganic composite A-class non-combustible insulation board has the advantages that both excellent heat insulation performances and good fire-proof performances are provided. The insulation core material layer and the interface reinforcement layers form an organic whole, so that defects of poor water-proof performances and low surface strength of common inorganic insulation boards are overcome. The insulation board can be pasted through polymer mortar directly when being installed on the wall, tedious interface treatment is not required, construction operations are convenient and rapid, and the bonding between the insulation board and a wall base layer is safe and firm. The wire-proof performance reaches the A class, and the whole fire-proof performance of a wall insulation system is greatly improved.

Description

technical field [0001] The invention relates to a thermal insulation board, in particular to an inorganic composite grade A non-combustible thermal insulation board and a preparation method thereof. Background technique [0002] The current wall insulation materials mainly include molded expanded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU) and other organic insulation boards and insulation mortars. Although the thermal conductivity of organic thermal insulation materials is low, their fire safety performance is generally poor. The non-combustibility can only reach B1 level, and toxic and harmful gases are easily produced during the combustion process. Once a fire occurs, it often causes heavy casualties and property. loss. Among the organic insulation materials, EPS and XPS melt and drip when exposed to fire, which is likely to cause the spread of fire. XPS has been controversial since its birth. Problems such as high strength, poor air per...

AI Technical Summary

Problems solved by technology

It is mainly manifested in the cracking of the insulation layer, poor thermal insulation performance, expansion and high dry density, etc. The thermal conductivity of the slurry is much higher than the standard value, and the energy saving effect that can be achieved is limited.

As far as vitrified microbead thermal insulation slurry is concerned, expanded perlite is often used instead of vitrified microbeads in practical applications. Due to its poor strength, it is easily broken when stirred, resulting in high dry density of vitrified microbead thermal insulation slurry and solidification of the slurry. After that, the expansion of water absorption is very easy to cause damage, these factors have greatly affected the thermal insulation performance of the slurry

In short, due to its own shortcomings such as high water absorption, high thermal conductivity, and easy hollowing and cracking, the application of inorganic vitrified microbead insulation mortar in cold regions has been limited, especially because the quality of on-site construction is difficult to control.

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