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Oligomer compound, hydrophobic composition, preparation method and application thereof

A technology of compounds and prepolymers, applied in the direction of silicon organic compounds, coatings, etc., can solve the problems of unsuitable large-area hydrophobic surfaces and coatings, complex equipment or high-temperature calcination, and reduction of superhydrophobicity, achieving remarkable durability Scrubbing effect, effect of improving waterproof and water-proof performance

Active Publication Date: 2015-11-04
鹤山市顺鑫实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many methods are not suitable for the preparation of large-area hydrophobic surfaces and coatings. These technologies still have defects such as the need to use complex equipment or high-temperature calcination, which restricts the application of such superhydrophobic coatings in the fields of exterior wall coatings and industrial coatings.
On the other hand, prolonged light exposure and accumulation of pollutants can lead to the reduction of superhydrophobicity, which is another key issue affecting its application.
In addition, the existing super-hydrophobic self-cleaning coating is adsorbed on the surface of the object by physical adsorption, the adhesion is not strong, and it is easy to hang or wear, resulting in low fastness, which seriously limits its popularization and application.

Method used

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  • Oligomer compound, hydrophobic composition, preparation method and application thereof
  • Oligomer compound, hydrophobic composition, preparation method and application thereof
  • Oligomer compound, hydrophobic composition, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The preparation of embodiment 1 hydrophobic prepolymer compound

[0042]Dissolve 20 grams of ethyl orthosilicate in 150 grams of ethanol, add 1 gram of concentrated hydrochloric acid under the condition of full stirring, then dropwise add 10 grams of water, react at 80°C for 8 hours, and then distill off the water. Titration analysis of the residual amount of concentrated hydrochloric acid, add 5 grams of concentrated hydrochloric acid, then add 25 grams of methyltrimethoxysilane, react at a temperature of 40 ° C for 2 hours, then add 50 grams of methyltrimethoxysilane and perfluorooctyl 20 grams of trimethoxysilane, 5 grams of dimethylhydroxychlorosilane was added after the condensation reaction at 70 ° C for 2 hours, and the capping reaction was carried out. The reaction temperature was 45 ° C and the time was 1 hour; after the end of the capping reaction, carbonic acid was added Neutralize with 5 grams of sodium hydrogen until the pH value is 7, distill the solvent, ...

Embodiment 2

[0046] The preparation of embodiment 2 hydrophobic prepolymer compounds

[0047] Dissolve 40 grams of ethyl orthosilicate in 200 grams of ethanol, add 1.5 grams of concentrated hydrochloric acid under the condition of full stirring, then dropwise add 15 grams of water, react at 80°C for 8 hours, and then distill off the water. Titration analysis of residual concentrated hydrochloric acid, add 5 grams of concentrated hydrochloric acid, then add 60 grams of methyltrimethoxysilane, react at a temperature of 40 ° C for 2 hours, then add 150 grams of methyltrimethoxysilane and perfluorooctyl 60 grams of trimethoxysilane, 15 grams of dimethylhydroxychlorosilane was added after the condensation reaction at 70 ° C for 2 hours, and the capping reaction was carried out. The reaction temperature was 45 ° C and the time was 1 hour; after the end of the capping reaction, carbonic acid was added 15 grams of sodium hydrogen was neutralized to a pH value of 7, the solvent was distilled, and t...

Embodiment 3

[0051] Preparation of embodiment 3 hydrophobic prepolymer compound

[0052] Dissolve 20 grams of ethyl orthosilicate in 200 grams of ethanol, add 1.5 grams of concentrated hydrochloric acid under the condition of full stirring, then dropwise add 15 grams of water, react at 80°C for 8 hours, and then distill off the water. Titration analysis of the residual amount of concentrated hydrochloric acid, add 5 grams of concentrated hydrochloric acid, then add 60 grams of methyltrimethoxysilane, and react for 2 hours at a temperature of 40 ° C, then add 350 grams of hexadecyltrimethoxysilane and all 70 grams of fluorodecyltrimethoxysilane, after condensation reaction at 70°C for 2 hours, add 15 grams of dimethylhydroxychlorosilane to carry out capping reaction, the reaction temperature is 45°C, and the time is 1 hour; after the capping reaction Add 15 grams of sodium bicarbonate to neutralize to a pH value of 7, distill the solvent, then wash the unreacted matter with ethanol and sepa...

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Abstract

The invention discloses an oligomer compound, a hydrophobic composition, a preparation method of the oligomer compound, and a use of the oligomer compound and the hydrophobic composition. The oligomer compound has a structural formula shown in the formula I. The invention further discloses the hydrophobic composition composed of the oligomer compound shown in the formula I and a use of the hydrophobic composition in improvement of water-resistance and water-isolation or scrubbing-resistance of an object. The hydrophobic composition can be used in water-resistant and water-isolating or scrubbing-resistant treatment on glass, textile fabrics, building materials or electronic products. A textile fabric treated by the hydrophobic composition has washing resistance and acid and alkali resistance. The hydrophobic composition does not influence a fabric handle and softness and has obvious effects of water-resistance and water-isolation. The hydrophobic composition can be used for preparation of a waterproof layer in a building, and can also be used for water-resistance and water-isolation treatment on building materials and electronic products.

Description

technical field [0001] The present invention relates to an oligomer compound, especially to an oligomer compound used for preparing a hydrophobic coating, a hydrophobic composition mainly composed of the oligomer compound and a preparation method thereof. The present invention further relates to the oligomer compound The invention relates to the application of a body compound and a hydrophobic composition in improving the waterproof and water-repellent performance of an object or the scrub resistance of a surface, and belongs to the field of preparation and application of the hydrophobic composition. Background technique [0002] International research on superhydrophobic coatings began in the 1950s. By the end of the 1990s, with the development of surface technology, especially the improvement of surface research techniques, superhydrophobic coatings were prepared by imitating their surface structure and performance. The coating film has attracted people's attention, and ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/08C08G77/24C09D183/08
Inventor 马可
Owner 鹤山市顺鑫实业有限公司