Aerogel composite board and preparation method thereof

A technology of airgel and composite panels, which is applied in the direction of building components, layered products, buildings, etc., can solve the problems of high production cost, high cost, and inability to withstand high pressure, and achieve a wide range of applications, reduce costs, and use convenient effect

Inactive Publication Date: 2014-02-12
江苏龙睿建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as thermal insulation boards are concerned, airgel and heat-resistant fibers are generally combined. However, airgel has low mechanical strength and high cost, so the thermal insulation boards prepared with it have low strength and cannot withstand large Pressure, high production cost and other issues

Method used

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  • Aerogel composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The panel is made of fluorocarbon baking varnish Lesier aluminum square plate; the bottom plate is made of calcium silicate pressure plate; the adhesive is made of epoxy resin structural glue; the honeycomb skeleton is made of flame-retardant PP honeycomb core; the silica airgel is made of water glass airgel.

[0021] The specific preparation method is as follows: first, apply epoxy resin structural adhesive on one side of the calcium silicate pressure plate and bond the PP honeycomb core; then fill the honeycomb with silica airgel; One side of the square board is also coated with epoxy resin structural glue, and pasted on the PP honeycomb core filled with silica airgel, and then the upper and lower boards are compacted.

[0022] Performance testing:

[0023] 1. Using GB / T10295-2008, the thermal conductivity of the composite board is detected to be 0.019 (W / m.k);

[0024] 2. The national standard GB8624-2012 for thermal insulation building materials is adopted, and th...

Embodiment 2

[0027] The panel is made of natural marble; the bottom plate is made of gypsum fiber pressure board; the adhesive is made of acrylic adhesive; the honeycomb skeleton is made of flame-retardant PC honeycomb core; the silica airgel is made of water glass airgel.

[0028] The preparation method is the same as in Example 1.

[0029] Performance testing:

[0030] 1. Using GB / T10295-2008, the thermal conductivity of the composite board is detected to be 0.01 (W / m.k);

[0031] 2. The national standard GB8624-2012 for thermal insulation building materials is adopted, and the composite board is tested to be Class A flame retardant;

[0032] 3. The detection of compressive strength is 2.3Mpa, and the detection of tensile strength is 1.6Mpa.

Embodiment 3

[0034] The panel is made of polyester fiberboard; the bottom plate is made of polyester fiberboard; the adhesive is made of polyurethane structural adhesive; the honeycomb skeleton is made of aluminum honeycomb core; the silica airgel is made of silica sol aerogel.

[0035] The preparation method is the same as in Example 1.

[0036] Performance testing:

[0037] 1. Using GB / T10295-2008, the thermal conductivity of the composite board is detected to be 0.02 (W / m.k);

[0038] 2. Adopt the national standard GB8624-2012 for thermal insulation building materials, and test that the composite board is S1 class flame retardant;

[0039] 3. The detection of compressive strength is 2.0Mpa, and the detection of tensile strength is 1.6Mpa.

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Abstract

The invention relates to an aerogel composite board and a preparation method thereof. The composite board comprises a panel, a bottom board, and skeletons which are positioned between the panel and the bottom board and are crossed to form a plurality of cavities. The preparation method comprises the steps of coating a binding agent at one side of the bottom board so as to bind the skeletons with the bottom board; filling the cavities of the skeletons with silica aerogel; coating a binding agent at one side of the panel and binding with the skeletons filled with the silica aerogel. The aerogel composite board and the preparation method thereof have the advantage that the mechanical strengths of the panel, the bottom board and the whole composite board are improved by adopting a structure of enabling the skeletons as a center and compounding boards up and down; the coefficient of thermal conductivity of is reduced to 0.010-0.020 (W/m.k) through the aerogel evenly distributed in the cavities of the skeletons, so that the composite board is superior to various heat-insulating materials, and is next only to a vacuum insulating board; The application range of the composite board application scope is widespread, such as industry, the external walls of buildings, interior decoration, traffic transportation vehicles and ships.

Description

technical field [0001] The invention relates to a composite board and a preparation method thereof, in particular to an airgel composite board and a preparation method thereof, belonging to the field of thermal insulation materials. Background technique [0002] Airgel (aerogels) usually refers to a lightweight nano-solid material that aggregates with nano-scale ultrafine particles to form a nano-porous network structure, and fills the network pores with a gaseous dispersion medium. Airgel is a solid, but 99% is composed of gas, the appearance looks like a cloud, because of its translucent color and ultra-light weight, it is sometimes called "solid smoke" or "frozen smoke" ". The most common airgel is silica airgel. As the solid substance with the lightest specific gravity and the largest specific surface area in nature, its excellent heat insulation effect surpasses all other materials. It has been used in solar energy utilization, building energy saving, It has been succ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B9/04E04C2/296
Inventor 徐征
Owner 江苏龙睿建设工程有限公司
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