Thermal insulation board and preparation method thereof

Abstract

The invention belongs to the technical field of thermal insulation materials, and discloses a thermal insulation board and a preparation method thereof. The thermal insulation board comprises a firstpanel layer, a second panel layer, a sandwich layer and framework supporting layers. The sandwich layer is an aerogel felt layer or is formed by stacking two or more aerogel felt layers, and each aerogel felt layer is formed by splicing a plurality of fiber-reinforced aerogel composite felts; the sandwich layer is arranged between the first panel layer and the second panel layer, the lower surfaceof the sandwich layer and the first panel layer, the upper surface of the sandwich layer and the second panel layer, the peripheral edge of the sandwich layer and a splicing seam of any two adjacentfiber reinforced aerogel composite felts in the sandwich layer are integrally formed and filled with the framework supporting layer. The preparation method comprises the following steps: laying, sealing, preparing a glue solution, injecting glue, curing and demolding to obtain the thermal insulation board. An integral curing molding method is adopted, the framework supporting layers are formed while the panel is obtained, and the prepared thermal insulation board has the advantages of light weight, thermal insulation and greatly improved mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a 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 cementitious material, mixed wit...

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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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