Microcapsule phase change particles of compound nano-copper and nano graphene sheet and preparation method
A technology of nano-graphene and nano-graphite, which is applied in the field of materials science, can solve problems such as poor stability, poor thermal conductivity, and unfavorable energy, and achieve the effects of reducing supercooling, improving thermal conductivity, and improving physical stability
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[0042] Example 1
[0043] 1) A step of weighing the core material and the wall material, according to the core-wall mass ratio of 2:1, weigh 40g of the core material n-octadecane, 10g each of the wall material gelatin and gum arabic;
[0044] 2) A step of determining the composite amount of nano particles, the total composite amount of composite nano-copper and nano-graphene sheets accounts for 3% of the total mass of the core wall, that is, 1.8 g;
[0045] 3) A step of preparing a mixture of nano-copper and nano-graphene sheets, the mass ratio of nano-copper and nano-graphene sheets is 1:1, take 0.9g nano-copper and 0.9g graphene, and treat the graphene with an ultrasonic processor for 5 hours to obtain nano Graphene sheets, mixed with nano-copper to obtain a mixture of nano-copper and nano-graphene sheets;
[0046] 4) A step of preparing a wall material solution: the first wall material gelatin and the second wall material gum arabic are respectively dissolved in 100 g of deionized ...
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[0050] Example 2
[0051] 1) A step of weighing the core material and the wall material, according to the core-wall mass ratio of 3:1, weigh 60g of the core material paraffin wax, wall material gelatin and gum arabic 10g each;
[0052] 2) A step of determining the composite amount of nanoparticles, the total composite amount of composite nano-copper and nano-graphene sheets accounts for 5% of the total mass of the core wall, that is 4g;
[0053] 3) A step of preparing a mixture of nano-copper and nano-graphene sheets, the mass ratio of nano-copper and nano-graphene sheets is 1:3, take 1g nano-copper 3g graphene, and treat the graphene with an ultrasonic processor for 5 hours to obtain nano-graphene Flakes, mixed with nano copper to obtain a mixture of nano copper and nano graphene flakes;
[0054] 4) A step of preparing a wall material solution: the first wall material gelatin and the second wall material gum arabic are respectively dissolved in 100 g of deionized water to prepare the...
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