Method for preparing large-area graphene material by adopting suturing method
A graphene, large-area technology, applied in the field of preparation of large-area graphene materials, can solve problems such as high cost, loss of function, small area, etc., and achieve the effects of prolonging life, low cost, and reducing manufacturing cost
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[0020] Example 1:
[0021] The graphene oxide GO was added to a conical flask containing diethylenetriamine at a mass ratio of 1:100. Then use an ultrasonic disperser to disperse at 90% ultrasonic intensity for 40 minutes, and observe the dispersion. The solution showed a black opaque liquid and was evenly dispersed. It was immediately transferred to a three-necked flask equipped with a stirring device and a distillation device. Under stirring, the temperature was raised to control the reaction temperature within 120°C, and the reaction time was 21h. After the reaction, the reaction solution is evenly coated on the 20# steel sheet that has been polished and cleaned beforehand, cleaned and dried with absolute ethanol, and placed in an oven at 120°C for 3 hours to obtain a graphene film that is "stitched" into a continuous structure. .
[0022] The organic amine as a suture agent reacts with graphene oxide, and the organic amine with primary amine at both ends reacts with graphene ...
Example Embodiment
[0030] Example 2:
[0031] The graphene oxide GO was added to a conical flask containing ethylenediamine at a mass ratio of 1:200. Then use an ultrasonic disperser to disperse at 90% ultrasonic intensity for 60 minutes to observe the dispersion. After being uniformly dispersed, immediately transfer it into a three-necked flask equipped with a stirring device and a distillation device. Under stirring, the temperature is raised to control the reaction temperature within 140°C, and the reaction time is 21h. After the reaction, the reaction solution is evenly coated on the 20# steel sheet that has been polished and cleaned beforehand, cleaned and dried with absolute ethanol, and placed in an oven at 120°C for 3 hours to obtain a graphene film that is "stitched" into a continuous structure. .
Example Embodiment
[0032] Example 3:
[0033] The graphene oxide GO was added to a conical flask containing diethylenetriamine at a mass ratio of 1:400. Then use an ultrasonic disperser to disperse for 55 minutes at 90% ultrasonic intensity, and observe the dispersion. After the dispersion is uniform, immediately transfer it into a three-necked flask equipped with a stirring device and a distillation device. Under stirring, the temperature is raised to control the reaction temperature within 100-200°C, and the reaction time is 23h. After the reaction, the reaction solution is evenly coated on the 20# steel sheet that has been polished and cleaned beforehand, cleaned and dried with absolute ethanol, and placed in an oven at 120°C for 3 hours to obtain a graphene film that is "stitched" into a continuous structure. .
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