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Preparation method of flame-retardant insulation board for building exterior wall

A flame retardant heat preservation and heat insulation board technology, applied in the field of building materials, can solve the problems of easy combustion, complex preparation process and required conditions, poor heat insulation performance, etc., achieve high flame retardancy, prevent heat transfer, The effect of stable temperature difference between the upper and lower enclosed spaces

Active Publication Date: 2014-02-05
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing a flame-retardant thermal insulation board for the exterior wall of a building, which is made of inorganic mineral nanofiber powder and has an internal porous structure. The board, the heat reflection layer coated on the upper surface of the board that can reflect near-infrared rays and visible light, and the heat radiation layer coated on the lower surface of the board overcome the poor thermal insulation performance of the existing building exterior wall insulation board , is easy to burn, constitutes a safety hazard, and the preparation process and required conditions are more complicated.

Method used

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Effect test

Embodiment 1

[0043] The first step is to prepare an inorganic mineral nanofiber powder sheet matrix with an internal porous structure

[0044] (1.1) Take the required amount of palygorskite fiber powder, go through purification, high-speed stirring, coupling modification, drying and deep debundling of supersonic airflow to obtain palygorskite nanofiber powder, ready for use,

[0045] (1.2) Take the sodium silicate with a weight percentage of 2% of the palygorskite nanofiber powder obtained in step (1.1), dissolve it in water, adjust the pH value=5 with acetic acid, and make a weight percentage concentration of 2% Acidic sodium silicate aqueous solution,

[0046] (1.3) In the sodium silicate aqueous solution obtained in the step (1.2), add ammonium fluorosilicate that accounts for 5% by weight of the amount of the palygorskite nanofiber powder prepared, and then add the sodium silicate solution obtained in the step (1.1). The palygorskite nanofiber powder was stirred at 200r / min for 5min t...

Embodiment 2

[0057] The first step is to prepare an inorganic mineral nanofiber powder sheet matrix with an internal porous structure

[0058] (1.1) Take the required amount of sepiolite fiber powder, go through purification, high-speed stirring, coupling modification, drying and deep debundling of supersonic airflow to obtain sepiolite nanofiber powder, which is ready for use,

[0059] (1.2) Take aluminum silicate with an amount of 2% by weight of the sepiolite nanofiber powder prepared in step (1.1), dissolve it in water, adjust pH=5.5 with acetic acid, and make a weight percentage concentration of 2% Acidic aluminum silicate aqueous solution,

[0060] (1.3) In the aqueous solution of aluminum silicate prepared in step (1.2), add zinc fluorosilicate that accounts for 5% by weight of the amount of sepiolite nanofiber powder prepared, and then add the solution prepared in step (1.1). The sepiolite nanofiber powder was stirred at 200r / min for 5min to obtain a suspension.

[0061] (1.4) Ad...

Embodiment 3

[0071] The first step is to prepare an inorganic mineral nanofiber powder sheet matrix with an internal porous structure

[0072] (1.1) Take the required amount of palygorskite fiber powder, go through purification, high-speed stirring, coupling modification, drying and deep debundling of supersonic airflow to obtain palygorskite nanofiber powder, ready for use,

[0073] (1.2) Take the zinc silicate with a weight percentage of 2% of the palygorskite nanofiber powder obtained in step (1.1), dissolve it in water, adjust the pH value=6 with acetic acid, and make a weight percentage concentration of 2% Acidic zinc silicate aqueous solution,

[0074] (1.3) In the aqueous solution of zinc silicate prepared in step (1.2), add sodium fluorosilicate with a weight percentage of 5% by weight of the amount of palygorskite nanofiber powder prepared, and then add the solution prepared in step (1.1). The palygorskite nanofiber powder was stirred at 200r / min for 5min to obtain a suspension. ...

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Abstract

The invention discloses a preparation method of a flame-retardant insulation board for a building exterior wall, and relates to a building material prepared from a composition of natural mineral materials. The method comprises the following steps: preparing an inorganic mineral nano fiber powder panel matrix with an internal porous structure; preparing a coating material for forming a heat reflecting layer on the upper surface of the panel matrix; preparing a coating material for forming a heat radiation layer on the lower surface of the panel matrix; respectively coating the coating material of the heat reflecting layer and the coating material of the heat radiation layer on the upper surface and the lower surface of the inorganic mineral nano fiber powder panel matrix to form the heat reflecting layer and the heat radiation layer respectively, and then naturally airing, so as to prepare the flame-retardant insulation board product for the building exterior wall. The defects that the existing insulation board for the building exterior wall is poor in thermal insulating property, and easy to burn, so as to form a potential safety hazard, and the preparation technology and the required conditions are complicated are overcome.

Description

technical field [0001] The technical scheme of the present invention relates to a building material composed of a composition of natural mineral materials, in particular to a preparation method of a flame retardant thermal insulation board for an exterior wall of a building. Background technique [0002] Building energy consumption accounts for 30% to 40% of human energy consumption. The area of ​​newly built houses in my country is as high as 1.7-1.8 billion square meters each year, which exceeds the total annual construction area of ​​all developed countries, and most of them are used for heating and air conditioning. Improving the thermal insulation performance of building exterior walls is an important way to save energy and improve the function of buildings. With my country's attention to building energy consumption, building energy saving is imperative, so the development and research of new building exterior wall thermal insulation board is very important. The use o...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B38/02C04B41/48
Inventor 王菲梁金生汤庆国刘海凤
Owner HEBEI UNIV OF TECH
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