Si-Mg composite insulation board and production method thereof

Abstract

The invention discloses an Si-Mg composite insulation board and a production method thereof. The Si-Mg composite insulation board comprises a composite silicate insulation board, and the upper face and the lower face of the composite silicate insulation board are sequentially provided with a first magnesium oxychloride cement layer, a non-woven mesh fabric and a second magnesium oxychloride cement layer from inside to outside. The production method comprises the following steps of: sequentially coating first magnesium oxychloride cement slurry, adhering the non-woven mesh fabric and coating second magnesium oxychloride cement slurry on both sides of the composite silicate insulation board from inside to outside, and then naturally airing under normal temperature. In the invention, any adhesive is not used at the same time of enhancing the flexural strength of the composite silicate insulation board, therefore, the cost is reduced, and the problems of surface dregs and high requirements to the adhesives of the composite silicate insulation board are also solved; the production method is simple and easy to operate; and the production process is not restricted by the environment and is simple and convenient.

Description

technical field [0001] The invention relates to a board and a production method, in particular to a silicon-magnesium composite thermal insulation board and a production method. Background technique [0002] Composite silicate insulation board is widely used in fire doors, building wall insulation and other fields. It has strong compression resistance, but weak flexural resistance, and the surface of composite silicate insulation board is honeycomb-shaped, which is easy to drop slag. The generation of dust will affect its adhesion with other boards, resulting in hollowing, degassing and other quality problems, and the rough surface of the honeycomb is not conducive to workers' construction. [0003] At present, the commonly used method to increase the flexural performance of composite silicate insulation boards is to paste hard boards on the outside of composite silicate insulation boards, but the production cost of the boards is high, and a large amount of bonding is requir...

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Problems solved by technology

[0005] In order to increase the flexural performance of the composite silicate insulation board and reduce the cost of new products formed with the composite silicate insulation board, various methods have been tried. One is to glue the reinforcing plate on the side of the composite silicate insulation board, It can achieve a good anti-bending effect, but the use of adhesives increases the cost of the product; the second is to use putty paint instead of adhesives to bond the composite silicate insulation board and the reinforcement board together, but the adhesion of the putty paint It is not strong, resulting in unsatisfactory anti-bending effect of the finished product; the third is to brush the cement coating on the side of the composite silicate insulation board first, then lay the non-woven mesh cloth on the cement coating, and finally lay the non-woven mesh cloth on the non-woven mesh cloth Brush the cement coating again, the product made by this method has good anti-bending effect, but the product is heavy, which is not conducive to transportation and construction

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