High dielectric polyimide/carbon nanotube composite material and preparation method thereof
A technology of carbon nanotubes and composite materials, which is applied in the field of high dielectric polyimide/carbon nanotube nanocomposites and its preparation, can solve the problems of carbon nanotubes easy to agglomerate, etc., to improve compatibility and improve dielectric strength. The effect of improving electrical properties and dielectric properties
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Embodiment 1
[0030] (1) 5g1,2,4,5-pyromellitic dianhydride, 27.5g urea, 0.2g ammonium molybdate, 7.8gCuCl 2 2H 2After O was mixed and ground evenly, it was put into a microwave oven and radiated and heated for 15 minutes at a power of 400w to obtain a dark green intermediate product octacarboxamido copper phthalocyanine. Then wash with 60° C. hot water and acetone three times respectively, and then wash three times with 250 ml of 6M HCl solution and filter. Put this intermediate product into a 500ml three-neck flask, put it into a NaOH solution with a mass concentration of 10%, and hydrolyze it at 85°C until ammonia gas is no longer detected. After the reaction, dilute with distilled water, filter with suction, adjust the filtrate to pH 4 with concentrated hydrochloric acid, let it stand for precipitation, wash the precipitate with methanol several times, separate the product by centrifugation, and dry it in a vacuum oven to obtain octacarboxy CuPc.
[0031] (2) Mix 1 g of carbon nanotub...
Embodiment 2
[0036] (1) 5g1,2,4,5-pyromellitic dianhydride, 27.5g urea, 0.2g ammonium molybdate, 7.8gCuCl 2 2H 2 After O was mixed and ground evenly, it was put into a microwave oven and radiated and heated for 5 minutes under the condition of a power of 800w to obtain a dark green intermediate product octamido copper phthalocyanine. Then wash with 65° C. hot water and acetone three times respectively, and then wash three times with 250 ml of 6M HCl solution and filter. Put this intermediate product into a 500ml three-neck flask, put it into a NaOH solution with a mass concentration of 10%, and hydrolyze it at 85°C until ammonia gas is no longer detected. After the reaction, dilute with distilled water, filter with suction, adjust the filtrate to pH 4 with concentrated hydrochloric acid, let it stand for precipitation, wash the precipitate with methanol several times, separate the product by centrifugation, and dry it in a vacuum oven to obtain octacarboxy CuPc.
[0037] (2) Mix 1 g of c...
Embodiment 3
[0042] (1) 5g1,2,4,5-pyromellitic dianhydride, 27.5g urea, 0.2g ammonium molybdate, 7.8gCuCl 2 2H 2 After O was mixed and ground evenly, it was put into a microwave oven and radiated and heated for 10 minutes under the condition of a power of 600w to obtain a dark green intermediate product octamido-copper phthalocyanine. Then wash with 70° C. hot water and acetone three times respectively, and then wash three times with 250 ml of 6M HCl solution and filter. Put this intermediate product into a 500ml three-neck flask, put it into a NaOH solution with a mass concentration of 10%, and hydrolyze it at 85°C until ammonia gas is no longer detected. After the reaction, dilute with distilled water, filter with suction, adjust the filtrate to pH 4 with concentrated hydrochloric acid, let it stand for precipitation, wash the precipitate with methanol several times, separate the product by centrifugation, and dry it in a vacuum oven to obtain octacarboxy CuPc.
[0043] (2) Mix 1 g of ...
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