Method for preparing graphene fibers by air-laid method
A graphene fiber, air-laid technology, applied in the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of high drying energy consumption and complex process, and achieve the effect of good flexibility, simple operation process and tight integration
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Embodiment 1
[0027] Such as figure 1 As shown, the expanded graphite oxide worm powder (0.5 cm in length and 0.3 mm in diameter) is sprayed onto the surface of the air-laid microporous nickel mesh 3 through the airflow injection device 1 under the action of the negative pressure suction device 8, and then passed through the mirror surface. The stainless steel membrane 2 and the microporous nickel mesh 3 are held on both sides, and the expanded graphite oxide worm powder is pressed into an ultra-thin graphite oxide film through the pressing roller system 4. The negative pressure suction device can evenly distribute the graphite oxide worm powder, Provide a basis for the formation of uniform thin film graphite oxide; the surface speed of the pressing roller is 10m / s, the pressure is 10 tons, the graphite oxide worm is pressed into an ultra-thin graphite oxide film with a thickness of 30μm (width 100mm), and an ultrasonic blade module is used The film slitting machine 5 is cut into 1000 conti...
Embodiment 2
[0029] The expanded graphite oxide worm powder (1 cm long, 0.5 mm in diameter) is sprayed onto the surface of the air-laid microporous nickel mesh by air jet method, held by the mirror stainless steel film and the microporous nickel mesh on both sides. Under the action of the pressure roller system, the expanded graphite oxide worm powder is pressed into an ultra-thin graphite oxide film; the surface speed of the pressure roller is 10m / s, the pressure is 10 tons, and the graphite oxide worm is pressed into a thickness of 30μm (width 100mm) ultra-thin graphite oxide film, cut into 100 continuous fibers with a width of 1.0mm by using a laser slitting module film slitting machine at the same surface speed as the pressure roller, and each fiber is a group of fluid The nozzle sprays air for twisting, and at the same time four beams of 650nm, 500mw laser beams are shot to the corresponding twisting point through the hole at the end of the nozzle, the graphite oxide fiber is transform...
Embodiment 3
[0031]The expanded graphite oxide worm powder (1 cm in length, 1 mm in diameter) is sprayed onto the surface of the air-laid microporous nickel mesh by air jet method, held by the mirror stainless steel film and the microporous nickel mesh on both sides. Under the action of the pressure roller system, the expanded graphite oxide worm powder is pressed into an ultra-thin graphite oxide film; the surface speed of the pressure roller is 10m / s, the pressure is 10 tons, and the graphite oxide worm is pressed into a thickness of 30μm (width 100mm) ultra-thin graphite oxide film, cut into 33 continuous fibers with a width of 3.0mm by using a straight blade module film slitting machine at the same surface speed as the pressure roller, and each fiber is a group of fluid nozzles Jet air twisting, while four beams of 650nm, 500 mW laser beams are shot to the corresponding twisting point through the hole at the end of the nozzle, the graphite oxide fiber is transformed into a graphene fibe...
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