Anti-graffiti and scrubbing-resistant coating composition and preparation method thereof

A technology of scrub resistance and composition, applied in the field of coatings, can solve the problems of poor graffiti resistance of coatings, fast attenuation of hydrophobic effect of coatings, affecting market application prospects, etc., and achieve low VOC and excellent hydrophobic effects

Active Publication Date: 2021-07-16

HEBEI CARPOLY PAINT CO LTD +1

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AI-Extracted Technical Summary

Problems solved by technology

However, the disadvantage of traditional water-based polyacrylate as a coating component is that the coating has poor graffiti resista...

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Method used

[0150] As can be seen from Table 1, the anti-graffiti and scrub-resistant coatings prepared in Examples 1-5 are strong in scrub resistance, and can withstand more than 20,000 times. By adjusting the ratio of component A to curing agent and the amount of hydrophobic gel added, the stain resistance score of Example 5 can reach 87, and the ...

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Abstract

The invention relates to an anti-graffiti and scrubbing-resistant coating composition. The raw materials of the anti-graffiti and scrubbing-resistant coating composition comprise a component A and a component B, wherein the mass ratio of the component A to the component B is 100: (20-40); the component A comprises hydrophobic modified hydroxy acrylic resin, and the component B comprises a curing agent and alcohol ether esters; the hydrophobic modified hydroxy acrylic resin is prepared from hydrophobic gel, a fluorine surfactant and hydroxy acrylic resin; and the hydrophobic gel is prepared from polymethylsilane and alkoxy silicon resin. The invention also comprises a preparation method of the anti-graffiti and scrubbing-resistant coating composition. The product provided by the invention is energy-saving and environment-friendly, has low VOC, solves the problem of poor anti-graffiti effect of a water-based coating, and has a stain resistance score up to 87 scores. According to the method, the defect that the water-based coating is poor in stain resistance stability is overcome, after 10000 times of scrubbing resistance, the stain resistance still reaches 85%, and almost no attenuation exists.

Application Domain

CoatingsPhotovoltaic energy generation

Technology Topic

Silicone resinActive agent +8

Image

Examples

Experimental program(5)
Comparison scheme(2)
Effect test(1)

Example Embodiment

[0044] Example 1

[0045] An anti-graffiti and scrubbing-resistant coating composition, the raw materials of which include component A and component B, and the mass ratio of component A and component B is 100:20.

[0046] The components that constitute component A and component B and their mass fractions are shown in the following table.

[0047] Component A:

[0048]

[0049] Component B:

[0050]

[0051] in,

[0052] The preparation method of component A is, according to the above-mentioned parts by mass, in the reaction kettle, place deionized water in a toothed disc disperser, start the disperser and control the rotational speed at 500r/min, and then add the remaining components to the disperser in turn. , dispersed for 15min, and mixed evenly;

[0053] The preparation method of component B is, according to the above-mentioned parts by mass, in a reaction kettle, place polyisocyanate and propylene glycol methyl ether acetate in a toothed disc disperser, start the disperser and control the rotating speed at 500r/min, disperse for 10min, Mix evenly;

[0054] Wherein, the preparation method of the above-mentioned anti-graffiti and scrub-resistant coating composition comprises the following steps:

[0055] Preparation of hydrophobically modified hydroxyacrylic resin:

[0056] The above-mentioned self-made hydrophobically modified hydroxy acrylic resin, the mass fraction of raw materials is shown in the table.

[0057]

[0058] S1. At room temperature, according to the above-mentioned parts by mass, place the hydroxyacrylic resin in a toothed disc disperser, start the disperser, and control the rotational speed to be 600 rpm, add a fluorosurfactant, and mix within 5min;

[0059] S2. Adjust the rotating speed to be 1800rpm, add the hydrophobic gel dropwise within 10min according to the above-mentioned parts by mass, shear at this rotating speed for 10min after the dropwise addition, and finally reduce the speed to 200rpm;

[0060] S3. According to the above-mentioned parts by mass, a pH regulator is added to adjust the pH of the formula to 8-9 to obtain a hydrophobically modified hydroxyacrylic resin.

[0061] Preparation of the Anti-Graffiti Scrub-Resistant Coating Composition:

[0062] Mix component A and component B in a mass ratio of 100:20 to obtain a product.

Example Embodiment

[0063] Example 2

[0064] An anti-graffiti and scrubbing-resistant coating composition, the raw materials of which include component A and component B, and the mass ratio of component A and component B is 100:40.

[0065]The components that constitute component A and component B and their mass fractions are shown in the following table.

[0066] Component A:

[0067]

[0068] Component B:

[0069]

[0070] in,

[0071] The preparation method of component A is as follows: according to the above-mentioned parts by mass, in the reaction kettle, the deionized water is placed in a toothed disc disperser, the disperser is started and the rotating speed is controlled at 500 r/min, and the remaining components are added in sequence to In the dispersing machine, disperse for 15min, and mix evenly;

[0072] The preparation method of component B is, according to the above-mentioned parts by mass, in a reaction kettle, place polyisocyanate and propylene glycol methyl ether acetate in a toothed disc disperser, start the disperser and control the rotating speed at 500r/min, disperse for 10min, Mix evenly;

[0073] Wherein, the preparation method of the above-mentioned anti-graffiti and scrub-resistant coating composition comprises the following steps:

[0074] Preparation of hydrophobically modified hydroxyacrylic resin:

[0075] The above-mentioned self-made hydrophobically modified hydroxy acrylic resin, the mass fraction of raw materials is shown in the table.

[0076]

[0077] S1. At room temperature, according to the above-mentioned parts by mass, place the hydroxyacrylic resin in a toothed disc disperser, start the disperser, and control the rotational speed to be 800 rpm, add a fluorosurfactant, and mix within 5min;

[0078] S2. Adjust the rotating speed to be 2500rpm, add the hydrophobic gel dropwise within 15min according to the above-mentioned parts by mass, shear at this rotating speed for 20min after the dropwise addition, and finally reduce the speed to 300rpm;

[0079] S3. According to the above-mentioned parts by mass, a pH regulator is added to adjust the pH of the formula to 8-9 to obtain a hydrophobically modified hydroxyacrylic resin.

[0080] Preparation of the Anti-Graffiti Scrub-Resistant Coating Composition:

[0081] Mix component A and component B in a mass ratio of 100:40 to obtain a product.

Example Embodiment

[0082] Example 3

[0083] An anti-graffiti and scrubbing-resistant coating composition, the raw materials of which include component A and component B, and the mass ratio of component A and component B is 100:30.

[0084] The components that constitute component A and component B and their mass fractions are shown in the following table.

[0085] Component A:

[0086]

[0087] Component B:

[0088]

[0089] in,

[0090] The preparation method of component A is as follows: according to the above-mentioned parts by mass, in the reaction kettle, the deionized water is placed in a toothed disc disperser, the disperser is started and the rotating speed is controlled at 500 r/min, and the remaining components are added in sequence to In the dispersing machine, disperse for 15min, and mix evenly;

[0091] The preparation method of component B is, according to the above-mentioned parts by mass, in a reaction kettle, place polyisocyanate and propylene glycol methyl ether acetate in a toothed disc disperser, start the disperser and control the rotating speed at 500r/min, disperse for 10min, Mix evenly;

[0092] The mass ratio of component A and component B is 100:30.

[0093] Wherein, the preparation method of the above-mentioned anti-graffiti and scrub-resistant coating composition comprises the following steps:

[0094] Preparation of hydrophobically modified hydroxyacrylic resin:

[0095] The above-mentioned self-made hydrophobically modified hydroxy acrylic resin, the mass fraction of raw materials is shown in the table.

[0096]

[0097] S1. At room temperature, according to the above-mentioned parts by mass, place the hydroxyacrylic resin in a toothed disc disperser, start the disperser, and control the rotational speed to be 600 rpm, add a fluorosurfactant, and mix within 5min;

[0098] S2. Adjust the rotating speed to be 2500rpm, add the hydrophobic gel dropwise within 15min according to the above-mentioned parts by mass, shear at this rotating speed for 20min after the dropwise addition, and finally reduce the speed to 300rpm;

[0099] S3. According to the above-mentioned parts by mass, a pH regulator is added to adjust the pH of the formula to 8-9 to obtain a hydrophobically modified hydroxyacrylic resin.

[0100] Preparation of the Anti-Graffiti Scrub-Resistant Coating Composition:

[0101] Mix component A and component B in a mass ratio of 100:30 to obtain a product.

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Classification and recommendation of technical efficacy words

Good hydrophobic effect
Low VOC

Anti-graffiti and scrubbing-resistant coating composition and preparation method thereof

A technology of scrub resistance and composition, applied in the field of coatings, can solve the problems of poor graffiti resistance of coatings, fast attenuation of hydrophobic effect of coatings, affecting market application prospects, etc., and achieve low VOC and excellent hydrophobic effects

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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