Composite aerogel thermal insulation coating and preparation method thereof

A technology for thermal insulation coatings and aerogels, applied in fire-resistant coatings, reflective/signal coatings, alkali metal silicate coatings, etc. Insufficient dispersion effect of silica aerogel, etc., to achieve the effect of good environmental protection grade, good water resistance and good fire resistance

Inactive Publication Date: 2017-05-31
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] (3) The dispersing effect of silica airgel is insufficient, and it is prone to stratification and pulverization during storage and use;
[0012] (4) Using organic film-forming material system, the coating has insufficient fire resistance and weather resistance

Method used

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  • Composite aerogel thermal insulation coating and preparation method thereof
  • Composite aerogel thermal insulation coating and preparation method thereof
  • Composite aerogel thermal insulation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 Shown, a kind of preparation method of airgel composite thermal insulation coating, the step of this method comprises:

[0044](1) Add 15g of KH570 silane coupling agent and 1g of X-405 wetting agent into 100g of water, and stir for 30s at a stirring rate of 400 rpm;

[0045] (2) adding 30 g of silica airgel as the main filler to the solution obtained in step (1) in small quantities several times, and oscillating with a high-speed oscillator for 30 minutes to obtain a water-based airgel slurry;

[0046] (3) Add 20 g of water, 1 g of Tehaosan 731A dispersant and 1 g of BYK8821 defoamer to the aqueous airgel slurry obtained in step (2);

[0047] (4) Add 5 g of high white aluminum silicate and 10 g of titanium dioxide to the product obtained in step (3), and stir for 5 min at a stirring rate of 500 to 700 rpm;

[0048] (5) Add 15g of ceramic microbeads, 60g of water glass and 60g of silicon acrylic emulsion to the product obtained in step (4), and stir f...

Embodiment 2

[0052] A preparation method of an airgel composite thermal insulation coating, the steps of the method comprising:

[0053] (1) Add 20g of KH570 silane coupling agent and 1g of X-405 wetting agent into 120g of water, and stir for 30s at a stirring speed of 400 rpm;

[0054] (2) adding 40g of silica airgel as the main filler into the solution obtained in step (1) in small quantities several times, and using a high-speed oscillator to vibrate for 30 minutes to obtain an aqueous airgel slurry;

[0055] (3) Add 1g Tehaosan 731A dispersant and 1g BYK8821 defoamer to the aqueous airgel slurry obtained in step (2);

[0056] (4) Add 15g of zinc oxide to the product obtained in step (3), and stir for 15min at a stirring rate of 500 to 700 rpm;

[0057] (5) Add 5g of closed-cell perlite microbeads, 90g of water glass and 30g of silicon acrylic emulsion to the product obtained in step (4), and stir for 10min at a stirring rate of 200 to 300 rpm;

[0058] (6) Add 0.5g of 2020 thickener ...

Embodiment 3

[0061] A preparation method of an airgel composite thermal insulation coating, the steps of the method comprising:

[0062] (1) Add 15g of KH570 silane coupling agent and 1g of X-405 wetting agent into 100g of water, and stir for 30s at a stirring rate of 400 rpm;

[0063] (2) adding 30 g of silica airgel as the main filler to the solution obtained in step (1) in small quantities several times, and oscillating with a high-speed oscillator for 30 minutes to obtain a water-based airgel slurry;

[0064] (3) Add 20 g of water, 1 g of Tehaosan 731A dispersant and 1 g of BYK8821 defoamer to the aqueous airgel slurry obtained in step (2);

[0065] (4) Add 15 g of high-white aluminum silicate to the product obtained in step (3), and stir for 10 minutes at a stirring rate of 500 to 700 rpm;

[0066] (5) Add 15g of ceramic microbeads, 30g of water glass and 90g of silicon acrylic emulsion to the product obtained in step (4), and stir for 20min at a stirring rate of 200 to 300 rpm;

[...

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Abstract

The invention relates to composite aerogel thermal insulation coating and a preparation method thereof. The coating has good heat insulation performance, high reflection performance and high radiation performance, contains aerogel, and belongs to the technical field of heat insulation of building materials. The preparation method mainly comprises the steps of preparing water-based aerogel slurry, selecting filler with a high reflection / high radiation function, and selecting other filler with an auxiliary heat insulation function. The filler with the high reflection / high radiation function comprises one or more of high white aluminum silicate, titanium dioxide and zinc oxide; the filler with the auxiliary heat insulation function comprises one or more of glass microbeads, ceramic microbeads, expanded perlite and expanded vermiculite. Water glass and silicone acrylic emulsion (or pure acrylic emulsion) are used as film forming matters at the same time. In the step of preparing the water-based aerogel slurry, a silane coupling agent is taken as a dispersing agent.

Description

technical field [0001] The invention relates to an airgel composite thermal insulation coating and a preparation method thereof. The coating has good thermal insulation performance, high reflection and high radiation performance and contains airgel, and belongs to the technical field of building material thermal insulation. Background technique [0002] Building thermal insulation is an important aspect of saving energy and improving the living and use functions of buildings. It is estimated that my country's building energy consumption accounts for about 28% of the total energy consumption of the society. Building thermal insulation coatings have the characteristics of simple construction, low cost, and high construction efficiency, and have broad application prospects in the field of building energy conservation. [0003] Building thermal insulation coatings are divided into three types: barrier thermal insulation coatings, reflective thermal insulation coatings and radiat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D1/02C09D5/18C09D5/33C09D7/12
CPCC08K3/34C08K3/36C08K7/18C08K7/26C08K13/04C08K2201/014C09D1/02C09D5/004C09D5/18C09D143/04C09D7/61C09D7/70
Inventor 李力文陈王兵存张立功白晶莹张家强吕伟娜李家峰马刚
Owner BEIJING SATELLITE MFG FACTORY
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