Multi-layer composite thermal insulation board and preparation method thereof

Abstract

The invention discloses a multi-layer composite thermal insulation board and a preparation method thereof. The thermal insulation board comprises a thermal insulation layer, an aluminum material layer attached to the upper surface of the thermal insulation layer, and an aluminum material layer coated on the aluminum material. An outer coating on the upper surface of the layer, wherein the outer coating includes a first matrix and hollow ceramic balls dispersed in the first matrix; the thermal insulation layer includes a second matrix and closed-cell particles dispersed in the second matrix. Wherein, at least one of the upper surface and the lower surface of the thermal insulation layer is formed with several recesses. The multi-layer composite thermal insulation board not only further improves the thermal insulation effect, but also has the advantages of beautiful appearance, flame retardancy, weather resistance, corrosion resistance, waterproof and the like.

Description

technical field [0001] The invention relates to a thermal insulation material, in particular to a thermal insulation board and a preparation method thereof. Background technique [0002] At present, organic and inorganic insulation materials are widely used in industrial equipment and building walls. Organic materials such as expanded polystyrene board (EPS), extruded polystyrene board (XPS), spray polyurethane (SPU) and polystyrene particles, etc., have the advantages of light weight, good heat insulation performance and good waterproof performance, but the Achilles heel It is poor fire resistance. Inorganic materials such as glass wool and rock wool have the overall advantages of non-toxicity and good fire resistance, but they are dense and easy to absorb water. Organic materials and inorganic thermal insulation materials have their own advantages and disadvantages. How to combine these two types of materials to achieve an ideal thermal insulation material that maximizes...

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Problems solved by technology

[0007] However, although the various thermal insulation panels in the above-mentioned patent application documents have the effects of beautification, compression resistance, support, sound insulation, waterproof or fire prevention, some of the materials do not have the effect of thermal insulation, even if they have The effect of heat insulation is not very ideal

Therefore, there is still room for improvement in the achieved thermal insulation effect

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