Silicate microporous insulation plate and preparation method thereof

Abstract

The invention provides a silicate microporous insulation plate and a preparation method thereof. The preparation method includes steps of S1, preparing silicate insulation slurry so that the density of the defoamed slurry is controlled to 680-720 kg / m<3>; S2, adding suitable inorganic light mineral filler to the slurry, and mixing well; S3, injecting the mixture of step S2 into a mold, placing in a kiln along with the mold, and drying according to a certain temperature curve to obtain the finished plate. The silicate microporous insulation plate has the advantages that the silicate microporous insulation plate has certain strength and suitable toughness, nearly all advantages of microporous calcium silicate insulation material are retained, the defect that the microporous calcium silicate insulation material is hard, crispy and prone to crushing and difficult to construct is overcome, and the silicate microporous insulation plate is high in strength, treading resistant and tolerant to high temperatures as compared with foamed asbestos and composite silicate foam plates; the silicate microporous insulation plate is an insulation material with ideal comprehensive properties.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to the field of thermal insulation materials, and in particular to a silicate microporous thermal insulation board, which can also be called a silicate semi-rigid microporous thermal insulation board or a semi-rigid microporous thermal insulation board. Background technique [0002] Microporous calcium silicate is a hard insulation material commonly used in the market, and the product shape is a hard tile or plate. Its main advantages are high strength, high temperature resistance, and better thermal insulation effect. Compared with fiber insulation materials such as rock wool and glass wool, it has no itchy fiber dust, is better in environmental protection than fiber materials, and has a long service life. [0003] The main disadvantages of microporous calcium silicate are: [0004] 1. The product has no toughness, is hard and brittle, and is easily broken. There are ...

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Problems solved by technology

The second situation is that the maintenance personnel step on the microporous calcium silicate product and it is easy to break

After the product is broken, the thermal insulation performance decreases

[0005] 2. Although microporous calcium silicate has no itchy fiber dust, it has earthy dust on its surface, and it is easy to drop powder

Therefore, the construction of microporous calcium silicate is complicated, there are many processes, and the overall thermal insulation effect is not ideal.

[0007] There are also foamed asbestos boards, composite silicate foam insulation boards or felts on the market, with a density of 30-70kg / m 3 , is a soft thermal insulation material with a low density. Its material structure is an obvious foam structure. The diameter of the foam is in the order of millimeters. The strength is very low and the temperature resistance is also low. It cannot be stepped on and cannot replace microporous calcium silicate.

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