Three-dimensional structure nano-composite intelligent sponge, and preparation method and application
A nano-composite, three-dimensional structure technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of poor oil removal effect, inability to recover crude oil, and small processing capacity. To achieve the effect of solving the difficulty of uniform penetration, improving the ability, and improving the ability
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Embodiment 1
[0024] Weigh 5.5g of PDMS prepolymer and curing agent according to the weight ratio of 10:1, put them into an agate mortar, add 0.0280g of graphene (content 0.5%) and grind for 30min to make it fully mixed. The graphene-doped PDMS mixture was placed in a vacuum chamber and pumped for 10 min. Then pour it into a device with white sand cube sugar, pump air from the bottom for 10 minutes, and the mixture penetrates into the pores of white sand cube sugar. The sugar block absorbing the mixture was solidified at 80° C. for 7 hours to obtain a solid mixture of graphene / PDMS / white sugar cube. Finally, put it into hot water at 80°C and squeeze it repeatedly to completely dissolve the white sugar cube. After drying at 50°C, the PDMS sponge doped with graphene was obtained. Its microstructure was characterized by scanning electron microscopy (e.g. figure 2 As shown in a), a three-dimensional porous composite sponge was prepared.
[0025] The principle of nanocomposite smart sponge ...
Embodiment 2
[0029]Weigh 5.5g of PDMS prepolymer and curing agent according to the weight ratio of 10:1, put them into an agate mortar, add 0.289g of carbon nanotubes (content 5%) and grind for 40min to make them fully mixed. The PDMS mixture doped with carbon nanotubes was placed in a vacuum chamber and pumped for 15 min. Then pour it into the device with raw cane red sugar cubes, pump air from the bottom for 20 minutes, and the mixture penetrates into the pores of raw cane red sugar cubes. The sugar block absorbing the mixture was solidified at 80° C. for 6 hours to obtain a solid mixture of carbon nanotubes / PDMS / raw sugar cube. Finally, put it into hot water at 90°C and squeeze it repeatedly to completely dissolve the raw cane red sugar cube. After drying at 70°C, a PDMS sponge doped with carbon nanotubes was obtained. Its microstructure was characterized by scanning electron microscopy (e.g. figure 2 b), a three-dimensional porous composite sponge was prepared.
[0030] The princi...
Embodiment 3
[0034] Weigh 5.5g of PDMS prepolymer and curing agent according to the weight ratio of 10:1, put it into an agate mortar, add 0.17g of graphene and carbon nanotube mixture (ratio 3:1, content 3%) and grind for 40min, Make it well mixed. The PDMS mixture doped with graphene and carbon nanotubes was put into a vacuum chamber and pumped for 15 min. Then pour it into the device with white sand cube sugar, pump air from the bottom for 15 minutes, and the mixture penetrates into the pores of white sand cube sugar. The sugar block absorbing the mixture was solidified at 100°C for 5h. Finally, put it into hot water at 100°C and squeeze it repeatedly to completely dissolve the white sugar cube. After drying at 80°C, a PDMS sponge doped with graphene and carbon nanotubes was obtained.
[0035] The principle of nanocomposite smart sponge absorbing oil under light is as follows: figure 1 As shown, when the light is applied, the PDMS sponge modified by graphene and carbon nanotubes has...
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