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Nanometer modified silane-siloxane waterproof agent and preparation method thereof

A kind of silane and siloxane technology, applied in the field of concrete structure protection, can solve the problem of unstoppable, achieve the effect of blocking contact, large surface area and high surface energy

Inactive Publication Date: 2014-12-03
上海惠邦特种涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the presence of acidic corrosive gases such as carbon dioxide and sulfur dioxide in the ambient atmosphere, the waterproof structure on the surface of the concrete structure cannot prevent the acid gas from reacting with the concrete surface and causing corrosion on the concrete surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the weight ratio, add 3 parts of graphene oxide to 97 parts of ethanol, and disperse in an ultrasonic instrument for 45 minutes to obtain a yellow-brown or black graphene dispersion;

[0021] According to the weight ratio, add 12 parts of isooctyltriethoxysilane and 8 parts of isobutyltriethoxysilane to 30 parts of butyl acetate and 50 parts of ethanol, and disperse for 30 minutes under the condition of mechanical stirring at 1000r / min. A colorless and transparent silicone dispersion was obtained;

[0022] The graphene dispersion liquid and the organosilicon dispersion liquid are dispersed according to the weight ratio of 1:9 and mechanically stirred at 800 r / min for 30 min to obtain the nano-modified silane and siloxane waterproofing agent of the present invention.

[0023] After the concrete surface is painted, the acid salt spray test shows that the surface will not be damaged after 72 hours.

Embodiment 2

[0025] According to the weight ratio, add 3 parts of graphene oxide to 97 parts of ethanol, and disperse in an ultrasonic instrument for 45 minutes to obtain a yellow-brown or black graphene dispersion;

[0026] According to the weight ratio, add 8 parts of isooctyltriethoxysilane and 4 parts of isobutyltriethoxysilane to 20 parts of butyl acetate and 68 parts of ethanol, and disperse for 30 minutes under the condition of mechanical stirring at 1000r / min. A colorless and transparent silicone dispersion was obtained;

[0027] The graphene dispersion liquid and the organosilicon dispersion liquid are dispersed according to the weight ratio of 1:9 and mechanically stirred at 800 r / min for 30 min to obtain the nano-modified silane and siloxane waterproofing agent of the present invention.

[0028] After the concrete surface is painted, the acid salt spray test shows that the surface will not be damaged after 72 hours.

Embodiment 3

[0030] According to the weight ratio, add 3 parts of graphene oxide to 97 parts of n-butanol, and disperse for 45 minutes in an ultrasonic instrument to obtain a yellow-brown or black graphene dispersion;

[0031] According to the weight ratio, add 8 parts of isooctyltriethoxysilane and 4 parts of isobutyltriethoxysilane to 20 parts of ethyl acetate and 68 parts of n-butanol, and disperse under the condition of mechanical stirring at 1000r / min. 30min to obtain a colorless transparent silicone dispersion;

[0032] The graphene dispersion liquid and the organosilicon dispersion liquid are dispersed according to the weight ratio of 1:9 and mechanically stirred at 800 r / min for 30 min to obtain the nano-modified silane and siloxane waterproofing agent of the present invention.

[0033] After the concrete surface is painted, the acid salt spray test shows that the surface will not be damaged after 72 hours.

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Abstract

The invention relates to a nanometer modified silane-siloxane waterproof agent mainly used for waterproof and anti-corrosion protection of the surface of concrete, and a preparation method thereof, belonging to the field of concrete structure protection. The method comprises the following steps: step 1, dissolving graphene in a small-molecular alcohol or ester solvent and carrying out ultrasonic dispersion for 30 to 60 min so as to form a uniformly dispersed graphene dispersion; step 2, uniformly mixing isooctyl triethoxysilane and isobutyl triethoxysilane with an ester small-molecular solvent according to a certain proportion for 15 to 45 min by using a machine so as to obtain an organosilicone dispersion; and step 3, uniformly dispersing the graphene dispersion and the organosilicone dispersion according to a ratio of 1: 3 to 1: 10 under the condition of mechanical stirring so as to obtain the nanometer modified silane-siloxane waterproof agent.

Description

technical field [0001] The invention relates to the field of concrete structure protection, mainly nano-modified silane and siloxane water-repellent for concrete surface waterproof and anti-corrosion protection and a preparation method thereof. Background technique [0002] Generally, silane and siloxane can form a regular molecular structure after coating on the concrete surface, so that the concrete surface has a strong hydrophobic effect. Since water cannot spread on the concrete surface, the water absorption rate of the coated concrete is greatly reduced, and the corrosive ions dissolved in the water cannot enter the interior of the concrete with the liquid water. Therefore, the method of silicone coating is an effective concrete protection method. [0003] However, due to the presence of acidic corrosive gases such as carbon dioxide and sulfur dioxide in the ambient atmosphere, the waterproof structure on the surface of the concrete structure cannot prevent the acid ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/49
Inventor 徐伟陈嘉林刘义兴王伟坤
Owner 上海惠邦特种涂料有限公司
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