Aqueous polyether ketone ketone dispersion and preparation method thereof
A water-based dispersion, polyetherketoneketone technology, used in polyether coatings, coatings, anti-corrosion coatings, etc., can solve the problems of poor substrate adhesion, poor high temperature resistance, poor wear resistance, etc. High strength, excellent chemical resistance and low production costs
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Embodiment 1
[0023] (1) Add 980g deionized water and 20g hydroxypropyl methylcellulose (the viscosity of the aqueous solution when the concentration is 2wt% is 4000cps) into the mixing tank successively, add while stirring, the rotating speed is 150r / min, after stirring for 1h, stand still Place for 12 hours, the colloid is uniform, transparent and free of bubbles, and the viscosifying colloid is obtained, which is put into barrels for later use;
[0024] (2) Add 575g of deionized water, 25g of ethanol, 25g of ethylene glycol ether, 20g of AFCONA-5071, 5g of AFCONA-3585, 20g of BYK-021 into the mixing tank in turn, add while stirring, the speed is 200r / min, and then Slowly add 280g of PEKK fine powder into the mixing tank in 4 batches to avoid large agglomerates, add while stirring at a speed of 240r / min, after stirring evenly, measure the viscosity of the dispersion with a viscometer, and gradually Add about 50g of viscosifying colloid, add while stirring, the speed is 200r / min, adjust to...
Embodiment 2
[0026] (1) Add 980g of deionized water and 20g of hydroxypropyl methylcellulose (the viscosity of an aqueous solution with a concentration of 2wt% is 4000cps) into the mixing tank in turn, add while stirring, and the rotating speed is 150r / min. After stirring for 1h, let it stand 12h, the colloid is uniform and transparent without bubbles, and the viscosifying colloid is obtained, which is put into barrels for subsequent use;
[0027] (2) Add 565g of deionized water, 30g of ethanol, 30g of ethylene glycol ether, 20g of AFCONA-5071, 20g of BYK-021, 10g of AFCONA-3580 into the mixing tank in turn, add while stirring, the speed is 200r / min, and then Slowly add 250g of PEKK fine powder and 5g of carbon nanotubes into the mixing tank in 4 batches to avoid large agglomerates. Add while stirring at a speed of 240r / min. After stirring evenly, measure the viscosity of the dispersion with a viscometer , gradually add 70g of viscosifying colloid according to the viscosity, add while stir...
Embodiment 3
[0029] (1) Add 980g of deionized water and 20g of hydroxypropyl methylcellulose (the viscosity of an aqueous solution with a concentration of 2wt% is 4000cps) into the mixing tank in turn, add while stirring, and the rotating speed is 150r / min. After stirring for 1h, let it stand 12h, the colloid is uniform and transparent without bubbles, and the viscosifying colloid is obtained, which is put into barrels for subsequent use;
[0030] (2) Add 525g of deionized water, 30g of ethanol, 25g of BYK-348, 30g of AFCONA-2524, 5g of AFCONA-3580 into the mixing tank in turn, add while stirring at a speed of 200r / min, and then distribute 4 Slowly add 350g of PEKK fine powder in batches to avoid large lumps. Add while stirring at a speed of 240r / min. After stirring evenly, measure the viscosity of the dispersion with a viscometer, and gradually add about 30g of tackifier according to the viscosity body, add while stirring, the speed is 180r / min, the time to adjust to Tu-4 viscosity is abo...
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