A kind of preparation method of casing material of electronic equipment
A technology for electronic equipment and casings, which is applied in the field of preparation of electronic equipment casing materials, can solve the problems of few surface active groups, poor dispersion, low shielding efficiency, etc., and achieves simple preparation process, long-lasting shielding performance, and wide shielding range. Effect
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example 1
[0017] Weigh 3.0g of aniline, add 480mL of hydrochloric acid with a mass fraction of 5%, stir at 300r / min for 20min, then add 7.0g of carbon nanotubes, and disperse with 300W ultrasonic wave for 30min to obtain a suspension of carbon nanotubes. Add 7.0 g of ammonium persulfate and 300 mL of 5% hydrochloric acid to the tube suspension, stir in an ice-water bath for 20 min, then vacuum filter, wash the filter residue 3 times with deionized water, and obtain polyaniline-coated carbon nanotubes; weigh 3g of the above-mentioned polyaniline-coated carbon nanotubes were placed in a vacuum drying oven, dried at 80°C to constant weight, then transferred to a tube furnace, heated to 400°C at 4°C / min under a nitrogen atmosphere and kept for 2 hours , continue heating to 700°C and keep it warm for 1h, and cool naturally to room temperature to obtain nitrogen-doped carbon nanotubes; weigh 1g of the above-mentioned nitrogen-doped carbon nanotubes, add them to 80mL of absolute ethanol, disper...
example 2
[0020]Weigh 3.2g of aniline, add 490mL of hydrochloric acid with a mass fraction of 5%, stir at 350r / min for 25min, then add 7.5g of carbon nanotubes, and disperse with 300W ultrasonic wave for 40min to obtain a suspension of carbon nanotubes. Add 7.5 g of ammonium persulfate and 350 mL of 5% hydrochloric acid to the tube suspension, stir in an ice-water bath for 25 min, then vacuum filter, and wash the filter residue 4 times with deionized water to obtain polyaniline-coated carbon nanotubes; weigh 4g of the above-mentioned polyaniline-coated carbon nanotubes were placed in a vacuum drying oven, dried at 85°C to constant weight, then transferred to a tube furnace, heated to 420°C at 4°C / min under a nitrogen atmosphere and held for 2.5 h, continue heating to 710°C and keep it warm for 1.5h, then cool naturally to room temperature to obtain nitrogen-doped carbon nanotubes; weigh 1.5g of the above-mentioned nitrogen-doped carbon nanotubes, add them to 90mL of absolute ethanol, and...
example 3
[0023] Weigh 3.6g of aniline, add 500mL of hydrochloric acid with a mass fraction of 5%, stir at 400r / min for 30min, then add 8.4g of carbon nanotubes, and disperse with 300W ultrasonic wave for 50min to obtain a suspension of carbon nanotubes. Add 8.4g of ammonium persulfate to the tube suspension, 400mL of 5% hydrochloric acid by mass fraction, stir in an ice-water bath for 30min, then vacuum filter, and wash the filter residue 5 times with deionized water to obtain polyaniline-coated carbon nanotubes; 5g of the above-mentioned polyaniline-coated carbon nanotubes were placed in a vacuum drying oven, dried at 90°C to constant weight, then transferred to a tube furnace, heated to 450°C at 4°C / min under a nitrogen atmosphere and kept for 3 hours , continue heating to 720°C and keep it warm for 2h, and cool naturally to room temperature to obtain nitrogen-doped carbon nanotubes; weigh 2g of the above-mentioned nitrogen-doped carbon nanotubes, add them to 100mL of absolute ethanol...
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