Environment-friendly water-based aluminum-rich coating with long-term storage stability
A storage stability and coating technology, applied in the field of environmentally friendly water-based aluminum-rich coatings, can solve problems such as poor dispersion of aluminum powder, increase the amount of aluminum powder added in water-based aluminum-rich anti-corrosion coatings, etc., to achieve enhanced anti-corrosion performance, excellent storage stability, The effect of excellent corrosion resistance
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Embodiment 1
[0028] In the present embodiment, the preparation method of environmental protection water-based aluminum-rich paint is as follows:
[0029] 1. Using 200g spherical aluminum powder as raw material, stir and wash with 10% NaOH solution (1000ml) for 30min, then wash with absolute ethanol for 2~3 times, then wash with deionized water for 3 times and absolute ethanol for 1 time After being filtered and dried (30°C, 10h), the aluminum powder after surface treatment was obtained.
[0030] 2. Add 100g of aluminum powder after surface treatment to 500ml of ethylene glycol monobutyl ether, fully stir at room temperature for 20min, stirring speed 800r / min, then heat up to 40℃, add 100g silane, continue stirring for 20min, stirring speed 800 r / min, then add 100 g of deionized water dropwise under stirring conditions, and adjust the pH between 7 and 8 with acetic acid and triethanolamine, then react at 40 ° C for 8 h, and finally filter the product and wash with absolute ethanol. 2~3 tim...
Embodiment 2
[0034] 1. Using 200g spherical aluminum powder as raw material, stir and wash with 10% NaOH solution (1000ml) for 30min, then wash with absolute ethanol for 2~3 times, then wash with deionized water for 3 times and absolute ethanol for 1 time After being filtered and dried (30°C, 10h), the aluminum powder after surface treatment was obtained.
[0035]2. Add 100g of aluminum powder after surface treatment to 500ml of ethylene glycol monobutyl ether, stir at room temperature for 20min, stirring speed is 800r / min, then heat up to 40℃, add 100g silane, continue stirring for 20min, stirring speed 800 r / min, then add 100 g of deionized water dropwise under stirring conditions, and adjust the pH between 7 and 8 with acetic acid and triethanolamine, then react at 40 ° C for 8 h, and finally filter the product and wash with absolute ethanol. 2~3 times, drying at 30°C for 10h to obtain surface-modified aluminum powder.
[0036] 3. Disperse 8g of water-based resin in 11.2g of water, 8.9...
Embodiment 3
[0039] 1. Using 200g spherical aluminum powder as raw material, stir and wash with 10% NaOH solution (1000ml) for 30min, then wash with absolute ethanol for 2~3 times, then wash with deionized water for 3 times and absolute ethanol for 1 time After being filtered and dried (30°C, 10h), the aluminum powder after surface treatment was obtained.
[0040] 2. Add 100g of aluminum powder after surface treatment to 500ml of ethylene glycol monobutyl ether, stir at room temperature for 20min, stirring speed is 800r / min, then heat up to 40℃, add 100g silane, continue stirring for 20min, stirring speed 800 r / min, then add 100 g of deionized water dropwise under stirring conditions, and adjust the pH between 7 and 8 with acetic acid and triethanolamine, then react at 40 ° C for 8 h, and finally filter the product and wash with absolute ethanol. 2~3 times, drying at 30°C for 10h to obtain surface-modified aluminum powder.
[0041] 3. Disperse 8g of water-based resin in 7.3g of water, 5.8...
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