Shaped phase-change material with high heat-conducting property and preparation method thereof
A technology of shape-setting phase change materials and high thermal conductivity, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., to achieve the effects of high phase change heat storage capacity, easy availability of raw materials, and simple preparation methods
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Embodiment 1
[0016] Put the flake-like expandable graphite in a beaker, place the beaker in a microwave oven, and expand it at medium heat for 60 seconds to obtain worm-like expandable graphite. Take 0.21g of worm-like expandable graphite and 10mL of ethanol and mix it with ethanol for 60 minutes. Add 2.0g of ten Hexaic acid, continue to sonicate for 30 minutes, and then remove the ethanol by rotary evaporation to obtain the expanded graphite flake / hexadecanoic acid solid mixture.
[0017] The expanded graphite flake / hexadecanoic acid solid mixture was mixed with 0.5g of cetyltrimethylammonium bromide, 100mL of water and 0.45g of aniline, placed in a water bath at 70°C, and stirred for 1 hour to obtain a stable emulsion.
[0018] Keep the stirring speed constant, and change the 70°C water bath to a cold water bath until the temperature of the emulsion drops to 20-25°C.
[0019] Keep the temperature of the emulsion at 20-25°C, slowly add 10mL of aqueous solution containing 1.103g of ammoniu...
Embodiment 2
[0025] Put the flake-like expandable graphite in a beaker, place the beaker in a microwave oven, and expand for 60 seconds at medium heat to obtain worm-like expandable graphite. Take 0.11g of worm-like expandable graphite and 10mL of acetone and mix it with ultrasonic treatment for 2 hours. Add 2.06g of ten octadecanoic acid, continued sonication for 15 minutes, and then rotovaped off the acetone to obtain a mixture of expanded graphite flakes / octadecanoic acid solids.
[0026] The expanded graphite flake / stearic acid solid mixture was mixed with 0.54g of sodium dodecylbenzenesulfonate, 90mL of water and 0.58g of aniline, placed in a water bath at 75°C, and stirred for 30 minutes to obtain a stable emulsion.
[0027] Keep the stirring speed constant, and change the 75°C hot water bath into an ice water bath until the temperature of the emulsion drops to 0-5°C.
[0028] Keep the temperature of the emulsion at 0-5°C, slowly add 10 mL of aqueous solution containing 1.42 g of amm...
Embodiment 3
[0034] Put the flake-like expandable graphite in a beaker, place the beaker in a microwave oven, and expand it at medium heat for 90 seconds to obtain worm-like expandable graphite. Take 0.16g of worm-like expandable graphite and 10mL of methanol and mix it with methanol for 90 minutes. Add 2.0g of ten Tetraacid, continued sonication for 30 minutes, then rotary evaporated to remove methanol to obtain expanded graphite flakes / myristic acid solid mixture.
[0035] The expanded graphite flake / myristic acid solid mixture was mixed with 0.4g of sodium dodecylsulfonate, 100mL of water and 0.52g of aniline, placed in a water bath at 65°C, and stirred for 45 minutes to obtain a stable emulsion.
[0036] Keep the stirring speed constant, and change the 65°C hot water bath into a cold water bath until the temperature of the emulsion drops to 20-25°C.
[0037] Keep the temperature of the emulsion at 20-25°C, slowly add 15 mL of aqueous solution containing 1.29 g of ammonium persulfate in...
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