Halloysite antibacterial water-based paint, and preparation method and application thereof
A water-based paint and halloysite technology, applied in the field of paint, can solve the problems of weakened protection, complex process and high cost, and achieve the effects of high load, simple operation and low cost
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Embodiment 1
[0039] (1) Take by weighing 1g chitosan and be configured into an aqueous solution with a concentration of 1%, add 20g halloysite powder, and stir mechanically at 500 rpm for 60min;
[0040] (2) The mixture solution in step (1) is subjected to vacuum negative pressure 5 times, and the antibacterial agent is adsorbed to the inner and outer walls of the halloysite tube;
[0041] (3) Centrifuge at 5000 rpm for 10 minutes, pour off the supernatant, wash with pure water for 3 times and centrifuge, then take out the lower sediment, dry at 50°C for 12 hours, and obtain halloysite powder loaded with chitosan;
[0042] (4) The water-based acrylic resin coating (DSM NeoCryl XK-258) and the halloysite powder loaded with chitosan were mechanically stirred and mixed at 300 rpm for 30 min according to the mass ratio of 100:5.
[0043] (5) Spray the above-mentioned coating on the aluminum sheet and dry it at 25°C for 24 hours to coat the antibacterial coating.
[0044] (6) The above sample ...
Embodiment 2
[0046] (1) Take by weighing 0.5g chitosan quaternary ammonium salt and configure it into an aqueous solution of 5% concentration, add 20g halloysite powder, and stir mechanically at 800 rpm for 30min;
[0047] (2) The mixture solution in step (1) is subjected to vacuum negative pressure 6 times, and the antibacterial agent is adsorbed to the inner and outer walls of the halloysite tube;
[0048](3) Centrifuge at 8000 rpm for 5 minutes, pour off the supernatant, wash with pure water for 3 times and centrifuge, then take out the lower sediment, dry at 40°C for 16 hours, and obtain halloysite powder loaded with antibacterial agent;
[0049] (4) The water-based acrylic paint resin paint (Nuplex Setaque 6716) and the halloysite powder loaded with antibacterial agent were mechanically stirred and mixed at 500 rpm for 20 minutes according to the mass ratio of 100:10.
[0050] (5) Spray the above-mentioned coating on the wood and dry it at 50°C for 40h to coat the antibacterial coatin...
Embodiment 3
[0053] (1) Weigh 10 g of chitosan oligosaccharide to be configured into an 8% aqueous solution, add 20 g of halloysite powder, and ultrasonically disperse for 60 min;
[0054] (2) The mixture solution in step (1) is subjected to vacuum negative pressure 6 times, and the antibacterial agent is adsorbed to the inner and outer walls of the halloysite tube;
[0055] (3) Centrifuge at 6000 rpm for 12 minutes, pour off the supernatant, wash with pure water for 3 times and centrifuge, then take out the lower sediment, dry at 80°C for 4 hours, and obtain the halloysite powder loaded with antibacterial agent;
[0056] (4) Water-based acrylic paint resin paint ( 4400, Wanhua Chemical Group Co., Ltd.) and the halloysite powder loaded with antibacterial agent were mixed mechanically at 300 rpm for 40 min at a mass ratio of 100:8.
[0057] (5) Spray the above coating on the stainless steel and dry it at 40°C for 5 hours to reach the antibacterial coating.
[0058] (6) The above sample w...
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