Expanded graphite composite heat storage material as well as preparation method and application thereof
A technology of expanded graphite and composite materials, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of dehydration kinetics speed restricting large-scale application, etc.
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Embodiment 1
[0022] Add 1000 mL of distilled water to the beaker and heat to 293 K, then add a sufficient amount of ammonium chloride into the beaker, stir well, filter to obtain a saturated ammonium chloride solution, weigh 144 mg of calcium hydroxide and add it to the beaker, stir Make it fully dissolved; weigh 162 mg of zinc oxide and add it to the calcium hydroxide solution, stir continuously, and react continuously for 12 h to obtain a milky white suspension; add 200 mg of powdered expanded graphite to the beaker, Ultrasonic vibration for 24 h; then the solution was left to stand at a temperature of 293 K for about 12 h, and the beaker was placed at a temperature of 353 K for about 10 h to exhaust ammonia and water. After drying, the expanded graphite was taken out and washed with distilled water. Heating to a temperature of 353 K and drying for 10 h, cyclic washing and drying repeated 2-3 times to obtain the final expanded graphite-based calcium-based nanocomposite solar heat storage ...
Embodiment 2
[0024] Add 1000 mL of distilled water to the beaker and heat to 293 K, then add a sufficient amount of ammonium chloride to the beaker, stir well, filter to obtain a saturated ammonium chloride solution, weigh 74 mg of calcium hydroxide and add it to the beaker, And stir to make it fully dissolved; weigh 162 mg of zinc oxide and add it to the prepared calcium hydroxide solution, stir continuously, and react continuously for 12 h to obtain a milky white suspension; place 200 mg of powdered expanded graphite in a beaker, Ultrasonic vibration at a temperature of K for 24 h; then the solution was left to stand at a temperature of 293 K for about 12 h, and the beaker was placed at a temperature of 353 K for about 10 h to exhaust ammonia and water, and the expanded graphite was taken out after drying And the surface was cleaned; the expanded graphite was cooled to room temperature and washed with distilled water; the sample was heated to a temperature of 353 K for about 10 h to dry t...
Embodiment 3
[0026] Add 1000 mL of distilled water to the beaker and heat to 293 K, then add a sufficient amount of ammonium chloride to the beaker, stir well, filter to obtain a saturated ammonium chloride solution, weigh 74 mg of calcium hydroxide and add it to the beaker, And stir to make it fully dissolved; weigh 150 mg of nickel oxide and add it to the prepared calcium hydroxide solution, stir continuously, and react continuously for 12 h to obtain a milky white suspension; place the powdered expanded graphite in a beaker, and heat it at 293 K Ultrasonic vibration at a temperature of 24 h; then the solution was left to stand at a temperature of 293 K for about 12 h, and the beaker was placed at a temperature of 353 K for about 10 h to exhaust ammonia and water. After drying, the expanded graphite was taken out and Clean the surface; cool the removed expanded graphite to room temperature and wash it with distilled water; heat the sample to 353 K for about 10 h to dry the sample. The fi...
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