Composite insulation board and preparation method thereof

Abstract

The invention belongs to the technical field of preparation of insulation boards, and discloses a composite insulation board and a preparation method thereof. The composite insulation board comprisesa first panel layer, a second panel layer, a sandwich layer and a framework supporting layer. The sandwich layer comprises a plurality of fiber-reinforced aerogel composite felts, the framework supporting layer is in a grid shape, the framework supporting layer is arranged between the first panel layer and the second panel layer, and grids of the framework supporting layer are filled with the fiber-reinforced aerogel composite felts. The preparation method comprises the following steps: sequentially laying a release film, first demolding cloth, a first fiber reinforced resin prepreg tape and alatticed fiber reinforced resin prepreg tape frame from bottom to top; laying the fiber reinforced aerogel composite felt into a latticed fiber reinforced resin prepreg tape frame; laying a second fiber reinforced resin prepreg tape-second demolding cloth; and performing hot-pressing curing molding and demolding treatment to obtain the product. The mechanical property of the composite insulationboard is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of thermal insulation boards, and in particular relates to a composite thermal insulation board and a preparation method thereof. Background technique [0002] At present, the development of new energy, the improvement of the utilization rate of existing energy and the conservation of energy have attracted great attention from all countries. my country is an energy-poor country, therefore, rational use of energy and energy conservation are of great significance to the sustainable development of our society. Adopting new technologies and processes to develop environmentally friendly heat insulation materials is one of the most effective and economical measures to save energy. [0003] The commonly used thermal insulation materials in construction are mostly thermal insulation mortar, which is a kind of ready-mixed mortar made of various lightweight materials as aggregates, cement as cementitio...

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Problems solved by technology

Insulation mortar has the following disadvantages: high density, the weight of the insulation layer will easily bring difficulties to the construction, and increase the load-bearing burden of the building skeleton; high thermal conductivity, meet the national energy-saving standard, thick thickness; high hygroscopicity, easily lead to excessive weight, Falling off; Affected by construction factors, the strength changes greatly

However, due to the structural characteristics of airgel, airgel has disadvantages such as high brittleness and poor flexibility. At the same time, due to its preparation method, SiO 2 During the transportation, construction and use of airgel blankets, it is common for airgel powder to fall off from the felt body. The powder loss not only brings inconvenience to the construction, but also poses a threat to the health of the construction workers, and also reduces air condensation. The performance of the rubber felt itself greatly limits the application range of the airgel felt

Using airgel as the core material of the composite board can solve the problem of airgel powder dropping, but in view of the disadvantages of airgel's poor mechanical properties, it cannot meet the use requirements in some occasions that require high mechanical properties.

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