Method for improving dispersing performance of graphene
A technology of dispersion performance and graphene, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of graphene performance impact, dispersion efficiency, dispersion stability, graphene structure damage, graphene easy to agglomerate, etc. Achieve the effects of high dispersion stability, easy industrialization and high dispersion efficiency
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[0027] Example 1. A method for improving the dispersion performance of graphene
[0028] The method for improving the dispersion performance of graphene includes the following steps:
[0029] S1 Add graphene to the container, add N,N-dimethylformamide, the amount of N,N-dimethylformamide added is 28 times the mass of graphene, mix well, seal the container, and use ultrasonic cells The pulverizer is ultrasonic, the ultrasonic frequency is 23kHz, the ultrasonic time and the intermittent time are 3s and 2s respectively. In order to make the temperature of the dispersion lower than 30℃, the container is treated with an ice bath to obtain a graphene / DMF mixture, which is filtered to obtain the surface Functionalized graphene;
[0030] S2: Disperse the surface-functionalized graphene obtained in step S1 in deionized water through an ultrasonic water bath with an ultrasonic power of 300W and an ultrasonic time of 15min, so that the content of the surface-functionalized graphene in the solu...
Example Embodiment
[0033] Example 2. A method for improving the dispersion performance of graphene
[0034] The method for improving the dispersion performance of graphene includes the following steps:
[0035] S1 Add graphene to the container, add N,N-dimethylformamide, the amount of N,N-dimethylformamide added is 32 times the mass of graphene, mix well, seal the container, and use ultrasonic cells The pulverizer is ultrasonic, the ultrasonic frequency is 25kHz, the ultrasonic time and the intermittent time are 3s and 2s respectively. In order to make the temperature of the dispersion lower than 30℃, the container is treated with an ice bath to obtain a graphene / DMF mixture, which is filtered to obtain the surface Functionalized graphene;
[0036] S2: Disperse the surface-functionalized graphene obtained in step S1 in deionized water through an ultrasonic bath with an ultrasonic power of 500W and an ultrasonic time of 25min, so that the content of the surface-functionalized graphene in the solution i...
Example Embodiment
[0039] Example 3. A method for improving the dispersion performance of graphene
[0040] The method for improving the dispersion performance of graphene includes the following steps:
[0041] S1 Add graphene to the container, add N,N-dimethylformamide, the amount of N,N-dimethylformamide added is 30 times the mass of graphene, mix well, seal the container, and use ultrasonic cells The pulverizer ultrasonic, the ultrasonic frequency is 24kHz, the ultrasonic time and the intermittent time are respectively 3s and 2s, in order to make the temperature of the dispersion liquid lower than 30℃, the container is treated with an ice bath to obtain a graphene / DMF mixture, which is filtered to obtain the surface Functionalized graphene;
[0042] S2: Disperse the surface-functionalized graphene obtained in step S1 in deionized water through an ultrasonic water bath with an ultrasonic power of 400W and an ultrasonic time of 20min, so that the content of the surface-functionalized graphene in the ...
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