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Self-cleaning anti-fouling hydrophobic membrane layer based on enamel surface and preparation method thereof

A hydrophobic film layer, enamel technology, applied in the coating, metal material coating process and other directions, can solve the problems that have not been reported in the research, and achieve the effect of excellent chemical stability of acid resistance and improvement of hydrophobic performance.

Inactive Publication Date: 2012-09-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Enamel materials have been widely used in subways, tunnels, building exterior walls and other building decorations. Hydrophobic and self-cleaning enamel has broad application prospects. It can improve the environmental quality of public places, reduce pollution, and prolong the service life of equipment. For enamel surfaces Hydrophobic performance research has not yet seen specific reports

Method used

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  • Self-cleaning anti-fouling hydrophobic membrane layer based on enamel surface and preparation method thereof
  • Self-cleaning anti-fouling hydrophobic membrane layer based on enamel surface and preparation method thereof
  • Self-cleaning anti-fouling hydrophobic membrane layer based on enamel surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Weigh each raw material according to the volume percentage of the following components:

[0040]

[0041] (2) Pour the weighed anhydrous ethanol and ammonia water into the beaker, stir for 5 minutes, seal the mouth of the beaker after mixing, and magnetically stir for 140 minutes;

[0042] (3) Gradually add weighed orthosilicate ethyl ester dropwise into the beaker after magnetic stirring, and keep magnetic stirring during the dropping process, and the stirring time is 80 minutes after the dropping is completed;

[0043] (4) After stirring, place the enamel substrate as described in Table 1 in the beaker solution and soak for 60 minutes, take it out and put it in a constant temperature oven at 60°C, keep it warm for 95 minutes, then use tweezers to pick up the enamel substrate and quickly put it into a drying dish , naturally cooled with room temperature;

[0044] (5) Take out the enamel substrate sample from the drying dish and place it in a cool and dry place ...

Embodiment 2

[0049] (1) Weigh each raw material according to the volume percentage of the following components:

[0050]

[0051] (2) Pour the weighed anhydrous ethanol, ammonia + hydrochloric acid (the volume ratio of ammonia to hydrochloric acid is 95%:5%) into the beaker, stir for 3 minutes, seal the mouth of the beaker after mixing, and magnetically stir for 40 minutes;

[0052] (3) Gradually add weighed tetraethyl orthosilicate dropwise into the beaker after magnetic stirring, and keep magnetic stirring during the dropping process, and the stirring time is 58 minutes;

[0053] (4) After stirring, place the enamel substrate in the beaker solution and soak for 60 minutes, take it out and put it in a constant temperature oven with a temperature of 64°C, keep it warm for 97 minutes, then use tweezers to pick up the enamel substrate and quickly put it into a drying dish. cool down;

[0054] (5) Take out the enamel substrate sample from the drying dish and place it in a cool and dry pl...

Embodiment 3

[0059] (1) Weigh each raw material according to the volume percentage of the following components:

[0060]

[0061] (2) Pour the weighed anhydrous ethanol, ammonia + hydrochloric acid (the volume ratio of ammonia to hydrochloric acid is 85%:15%) into the beaker, stir for 7 minutes, seal the mouth of the beaker after mixing, and magnetically stir for 82 minutes;

[0062] (3) Gradually add weighed tetraethyl orthosilicate dropwise into the beaker after magnetic stirring, and keep magnetic stirring during the dropping process, and the stirring time is 60 minutes;

[0063] (4) After stirring, place the enamel substrate in the beaker solution and soak for 75 minutes, take it out and put it in a constant temperature oven at 55°C, keep it warm for 120 minutes, then use tweezers to pick up the enamel substrate and quickly put it in a drying dish, let it cool down naturally at room temperature cool down;

[0064] (5) Take out the enamel substrate sample from the drying dish and p...

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Abstract

The invention relates to a self-cleaning anti-fouling hydrophobic membrane layer based on an enamel surface and a preparation method thereof. The hydrophobic membrane layer comprises the following components in percentage by weight: 0.1-10% of film-forming agent, 10-75% of cosolvent, 0.5-10% of catalyst and 5-70% of water repellent agent. The preparation method of the self-cleaning anti-fouling hydrophobic membrane layer comprises the following steps of: (1) after weighed cosolvent and weighed catalyst are mixed, sealed and stirred, dipping the film-forming agent to obtain mixed solution; (2) dipping an enamel substrate in the mixed solution; taking out the enamel substrate to keep the temperature at 50-70DEG C; then, naturally cooling the enamel substrate of which the temperature is kept in dry atmosphere; putting in the dry and cool place; finally dipping in the water repellent agent; and drying in the air. The membrane layer disclosed by the invention has the functional characteristics of self-cleaning, anti-fouling and dewatering, meets the requirement on the enamel materials with the self-cleaning, anti-fouling and dewatering performance by the market, and has a wide application prospect. The preparation method of the membrane layer is simple to operate and is low in cost.

Description

technical field [0001] The invention belongs to the field of hydrophobic film and its preparation, in particular to a self-cleaning and antifouling hydrophobic film based on an enamel surface and a preparation method thereof. Background technique [0002] Surface wettability is a natural phenomenon and one of the important properties of material surfaces. The wettability of a solid surface is determined by its chemical composition and microscopic geometry. With the in-depth study of surface hydrophobicity in nature, some processes for changing the surface properties have been obtained for the surface retreatment of hydrophilic materials. It has become a reality to modify the surface of hydrophilic materials to prepare materials with surface hydrophobicity. . A surface with a contact angle of less than 90° is usually defined as a hydrophilic surface, and a surface with a contact angle greater than 90° is defined as a hydrophobic surface. [0003] Hydrophobic surfaces have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/12C23C26/00
Inventor 沈浩李胜春蒋伟忠
Owner DONGHUA UNIV
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