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Cement-base heat-insulation and -preservation wet-aerogel nano hybridized ceramic coating and preparation method thereof

A wet airgel nano, thermal insulation technology, applied in the direction of cement coatings, fireproof coatings, coatings, etc., can solve the problems of small specific gravity, poor compatibility between dry airgel and water-based coatings, and inability to be uniform and stable Problems such as infiltration and dispersion

Active Publication Date: 2019-03-01
CHANGSHA HUANGMEI PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor compatibility between dry airgel and water-based coatings, and the specific gravity is too small and too light, it cannot be uniformly and stably infiltrated and dispersed in water-based coatings, so it cannot effectively play a role in helping heat insulation

Method used

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  • Cement-base heat-insulation and -preservation wet-aerogel nano hybridized ceramic coating and preparation method thereof
  • Cement-base heat-insulation and -preservation wet-aerogel nano hybridized ceramic coating and preparation method thereof
  • Cement-base heat-insulation and -preservation wet-aerogel nano hybridized ceramic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~6

[0043] For the convenience of expression, the following table is used to express the ratio and product performance of the 6 embodiments, which are a kind of cement-based heat-insulation and moisture-retaining moisture airgel nano-hybrid ceramic coating raw material group described in 1-6 embodiments. Sub-mass percentage table, the raw material mass percentage table of the A component; the raw material mass percentage table of the alkaline silica sol-water-emulsion mixture described in the A component; the raw material mass of the wet airgel described in the A component Percentage table; The performance index table of the cement-based thermal insulation and moisture aerogel nano-hybrid ceramic coating product obtained in the above-mentioned embodiment 1-6 obtained by embodiment 1-6:

[0044] Table 1: The mass percentage of raw material components of a cement-based thermal insulation and moisture aerogel nano-hybrid ceramic coating is:

[0045]

[0046] Table 2: The raw mater...

Embodiment 7

[0056] The preparation method of the cement-based heat-insulating and moisture-preserving moisture-airgel nano-hybrid ceramic coating is as follows:

[0057] In the first step, mix the metered emulsifier and water evenly, then add it into the alkaline silica sol, stir evenly, and prepare the alkaline silica sol-water-emulsion mixture;

[0058] In the second step, continue to stir the above-mentioned alkaline silica sol water-emulsion mixture in the first step, and quickly add the metered modifier mixture at one time while stirring, and continue to stir until the stirring mixture gradually changes from liquid to gel , the stirring is stopped, and the silicon dioxide moisture aerogel is obtained;

[0059] The third step is to mix alkoxysilane with silica sol and a small amount of water, and stir evenly until the stirring mixture becomes a translucent liquid, then add a metered amount of water-based self-drying acrylic emulsion, and stir evenly to obtain a water-based organic In...

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Abstract

The invention relates to a cement-base heat-insulation and -preservation wet-aerogel nano hybridized ceramic coating and a preparation method thereof. The coating includes, by mass, 20-80% of a component A waterborne organic-inorganic nano hybridized wet-aerogel waterproof and heat-insulation and -preservation ceramic emulsion; 20-80% of a component B cement; and the balanced being water. The preparation method includes: (1) uniformly mixing metered emulsifier and water and adding the mixture to alkaline silicon sol, uniformly stirring the mixture to prepare an alkaline silicon sol water-emulsion mixture; (2) preparing SiO2 wet-aerogel; (3) preparing the waterborne organic-inorganic nano hybridized ceramic emulsion; (4) preparing the waterborne organic-inorganic nano hybridized wet-aerogelwaterproof and heat-insulation and -preservation ceramic emulsion; (5) mixing the ceramic emulsion, in the step (4), with cement and water according to ratio uniformly to obtain the ceramic coating.The ceramic coating can be used for coating buildings in a scrape-coating or brush-coating manner; after 24-48 h, the ceramic coating can be dried, thus achieving heat-insulation and -preservation function.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a moisture-aerogel nano-hybrid ceramic coating. Background technique [0002] Thermal insulation coating is a very important thermal functional coating among many functional coatings. It controls various factors that cause changes in the temperature of objects to protect them from overcooling or overheating, and has the effect of saving energy and reducing consumption. It is an important method to improve the use function of buildings and is widely used in the field of construction. However, common thermal insulation coatings often have fatal defects such as cracks and internal hollows during the curing process of film formation at room temperature, resulting in unsatisfactory thermal insulation effects. [0003] More than 99% of the Aerogel structure is composed of gas, and the diameter of the pores in the material is between 20 and 50nm. The pores are open structures, disorde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D1/08C09D5/18C09D7/61C09D7/63
CPCC09D1/00C09D1/08C09D5/18C09D7/61C09D7/63
Inventor 宋海兵
Owner CHANGSHA HUANGMEI PAINT
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