A kind of modified acrylate emulsion and water-based paint containing the emulsion
An acrylate and modified technology, used in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve the problems of insufficient photocatalytic effect, reduced storage life of coatings, and difficulty in dispersion. Achieve the effect of super strong light redox ability, huge environmental protection and economic benefits, and low price
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Embodiment 1
[0044] Modified acrylate emulsion preparation method:
[0045] 1) Preparation of acrylamidated fly ash: Add 500g of raw fly ash powder into 5500ml of sodium hydroxide aqueous solution (3mol / L), stir rapidly and fully disperse; then mechanically stir for 4h under condensing reflux at 110°C . After the resulting mixture is cooled to room temperature, it is suction-filtered with deionized water, and the product is washed until the pH value of the filtrate is about 10. Hydroxylated fly ash; Add 300g of hydroxylated fly ash to the reactor and disperse in 1000ml of N-methylpyrrolidone, add 50g of silane coupling agent kh-550, react for 5 hours at 120°C under nitrogen atmosphere, then filter and purify Dried to obtain silanized fly ash; 250g dry silanized fly ash is fully dispersed in 1500ml of N-methylpyrrolidone, the dispersion is added to the oil bath heating reactor with condensation and nitrogen protection, and then Add 250g of 3,5-diaminobenzoic acid, react under nitrogen atm...
Embodiment 2
[0054] Modified acrylate emulsion preparation method:
[0055] 1) Preparation of acrylamidated fly ash: same as in Example 1
[0056] 2) Photocatalyst N-TiO 2 Preparation: Dissolve 200ml of 99.9% butyl titanate in 800ml of absolute ethanol at room temperature to obtain a mixed solution, then slowly add nitric acid to adjust the pH to 3. Slowly drop 100ml of ammonia water with a concentration of 25% into the mixed solution, stir well for 1h to obtain nanometer N-TiO 2 Dispersions. The above dispersion liquid is fully freeze-dried to nano powder. Finally, the powder was placed in a muffle furnace and calcined at 550 °C for 1 h to obtain nano-N-TiO with photocatalytic activity. 2 powder.
[0057] 3) Acrylamidated fly ash / N-TiO 2 Preparation: 300ml triethanolamine, 450ml deionized water and 1250ml absolute ethanol were mixed evenly, and 100g nitrogen-doped nano-TiO 2 Add the powder into the mixed solution, then add 90g of PEG (2000) until dissolved, and finally add 800g of ...
Embodiment 3
[0064] Water-based interior paint formula: modified acrylate emulsion 60g prepared in Example 1, dipropylene glycol n-butyl ether (film-forming aid) 2g, polyether modified polydimethylsiloxane (leveling agent) 0.6g, Silok 7155W water-based dispersant 0.2g, MK16 polyether modified defoamer 0.2g, hydroxyethyl cellulose (thickener) 2g, tetramethyldithiothiuram (mold inhibitor) 0.1g, deionized 23g of water.
[0065] Preparation method: Stir the modified acrylate emulsion in a dispersion tank at a medium speed to disperse evenly; then add deionized water and defoamer, stir at a high speed to disperse evenly; then add dispersant, film-forming aid, Thickener, high-speed stirring to mix evenly; then add leveling agent and antifungal agent, and disperse evenly.
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