A kind of preparation method of ultra-light graphene elastic airgel
An airgel and graphene technology, applied in the field of graphene airgel preparation, can solve the problems of high cost, complicated preparation process, and harsh conditions of elastic graphene airgel, and achieve light weight, simple preparation process, excellent The effect of mechanical properties
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Embodiment 1
[0032] At room temperature, weigh 120 mg of graphite oxide, place it in a 100 mL beaker, add 40 mL of distilled water to make a dispersion of graphite oxide concentration of 3 mg / mL, and then put the beaker into an ultrasonic instrument for ultrasonic treatment for 1 h; at the same room temperature, Weigh 60 mg of polyvinylpyrrolidone, place it in a 50mL beaker, add 20mL of distilled water to the beaker, and ultrasonically process the polyvinylpyrrolidone solution for 5 minutes to obtain a uniformly dispersed polyvinylpyrrolidone solution; The polyvinylpyrrolidone solution was mixed, stirred by magnetic force for 5min, and then the mixed solution was continued to be ultrasonically treated for 1h to obtain 60mL of uniformly dispersed sol; Put the steel jacket on, put it in an oven that raised the temperature to 180°C in advance, do a hydrothermal reaction in the oven for 10 hours, turn off the oven, and cool to room temperature naturally; open the hydrothermal kettle to get the ...
Embodiment 2
[0034] At room temperature, weigh 240 mg of graphite oxide, place it in a 100 mL beaker, add 40 mL of distilled water to make a dispersion of graphite oxide with a concentration of 6 mg / mL, and then put the beaker into an ultrasonic instrument for ultrasonic treatment for 1 h; at the same room temperature, Weigh 120mg of polyvinylpyrrolidone, place it in a 50mL beaker, add 20mL of distilled water to the beaker, and carry out ultrasonic treatment to the polyvinylpyrrolidone solution for 5min to obtain a uniformly dispersed polyvinylpyrrolidone solution; The polyvinylpyrrolidone solution was mixed, stirred by magnetic force for 5min, and then the mixed solution was continued to be ultrasonically treated for 1h to obtain 60mL of uniformly dispersed sol; Put the steel jacket on, put it in an oven that raised the temperature to 180°C in advance, do a hydrothermal reaction in the oven for 10 hours, turn off the oven, and cool to room temperature naturally; open the hydrothermal kettl...
Embodiment 3
[0036]At room temperature, weigh 120 mg of graphite oxide, place it in a 100 mL beaker, add 40 mL of distilled water to make a dispersion of graphite oxide concentration of 3 mg / mL, and then put the beaker into an ultrasonic instrument for ultrasonic treatment for 1 h; at the same room temperature, Weigh 60 mg of polyvinylpyrrolidone, place it in a 50mL beaker, add 20mL of distilled water to the beaker, and ultrasonically process the polyvinylpyrrolidone solution for 5 minutes to obtain a uniformly dispersed polyvinylpyrrolidone solution; The polyvinylpyrrolidone solution was mixed, stirred by magnetic force for 5min, and then the mixed solution was continued to be ultrasonically treated for 1h to obtain 60mL of uniformly dispersed sol; Put the steel jacket on, put it into an oven that raised the temperature to 150°C in advance, do a hydrothermal reaction in the oven for 10 hours, turn off the oven, and cool to room temperature naturally; open the hydrothermal kettle to get the...
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