A method for coating copper-nickel protective layer on the surface of hollow microspheres
A technology of hollow microspheres and surface coating, applied in coating, transportation and packaging, liquid chemical plating, etc., can solve problems such as hollow microspheres rupture, achieve the effect of reducing density, good wettability, and reducing mechanical damage
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Embodiment 1
[0021] Put 20g of fly ash floating beads into 500mL NaOH solution with a concentration of 0.5mol / L, stir and wash them with a mechanical stirrer at room temperature for 60min, filter them with suction and rinse them repeatedly with deionized water until pH = 7; then wash them with alkali Add the floating beads to 500mL of 30g / L ammonium fluoride solution, stir in a water bath at 50°C for 20min, rinse repeatedly with deionized water until pH = 7, and dry by suction. 53g Ni(NO 3 ) 2 ·6H 2 O and 15g Cu(NO 3 ) 2 ·3H 2O was dissolved in a mixed solution of 600mL ethanol and deionized water (the volume ratio of ethanol and deionized water was 1:1), and the roughened hollow microspheres were immersed in the above mixed solution, and mechanically stirred in a water bath at 50°C The mixer was stirred at a speed of 100r / min for 8h until the mixture was in a viscous state, and then it was placed in a blast drying oven at 100°C for 12h. Put the dried solid mixture into a tube furnac...
Embodiment 2
[0023] Put 25g of hollow glass microspheres into 500mL of NaOH solution with a concentration of 0.7mol / L, stir and wash with a mechanical stirrer at room temperature for 30min, filter with suction and rinse repeatedly with deionized water until pH = 7; wash the hollow glass with alkali The microbeads were added into 30 g / L ammonium fluoride solution, stirred in a water bath at 50°C for 50 min, rinsed repeatedly with deionized water until pH = 7, and dried by suction filtration. 50g Ni(NO 3 ) 2 ·6H 2 O and 40g Cu(NO 3 ) 2 ·3H 2 O was dissolved in a mixed solution of 800mL ethanol and deionized water (the volume ratio of ethanol and deionized water was 1:1), and the roughened hollow glass microspheres were immersed in the above mixed solution, and used in a water bath at 50°C. Stir with a mechanical stirrer at a speed of 300r / min for 6h until the mixture becomes viscous, and then place it in a forced air drying oven at 100°C for 15h. Place the dried solid mixture in a tube...
Embodiment 3
[0025] Put 25g of fly ash floating beads into 700mL of NaOH solution with a concentration of 1mol / L, stir and wash with a mechanical stirrer at room temperature for 40min, filter with suction and rinse repeatedly with deionized water until pH = 7; wash the hollow glass with alkali The microbeads were added into 30 g / L ammonium fluoride solution, stirred for 30 min in a water bath at 50° C., rinsed repeatedly with deionized water until pH = 7, and dried by suction filtration. 51g Ni(NO 3 ) 2 ·6H 2 O and 43g Cu(NO 3 ) 2 ·3H 2 O was dissolved in a mixed solution of 700mL ethanol and deionized water (the volume ratio of ethanol and deionized water was 1:1), and the fly ash floating beads were immersed in the above mixed solution, and were mixed with a mechanical stirrer under the condition of a 50°C water bath. Stir at a speed of 200r / min for 6h until the mixture becomes viscous, and then place it in a blast drying oven at 100°C for 20h. Place the dried mixture in a tube fur...
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