Composite phase change material and preparation method thereof
A composite phase change material and phase change temperature technology, applied in the field of materials, can solve problems such as supply and demand time and space mismatch, and achieve the effect of increasing nucleation capacity
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Embodiment 1
[0022] This embodiment provides a composite phase change material, which is prepared by the following method:
[0023] Weigh 1.0000 g of sodium carbonate decahydrate, 1.0000 g of sodium sulfate decahydrate, and 7.0000 g of disodium hydrogen phosphate dodecahydrate.
[0024] Put the three kinds of hydrates into a 50 mL beaker, stop with a rubber stopper to prevent the evaporation of bound water, heat in a water bath at 40°C, and stir for 1 hour at the same time. The resulting reaction product is the composite phase change material.
[0025] The performance of this embodiment is as follows:
[0026] The phase transition temperature is 15.45 °C, the degree of supercooling is 2.1 °C, and the latent heat of phase transition is 220.6 J / g.
Embodiment 2
[0028] This embodiment provides a composite phase change material, which is prepared by the following method:
[0029] Weigh 1.0000 g of sodium carbonate decahydrate, 1.0000 g of sodium sulfate decahydrate, and 7.0000 g of disodium hydrogen phosphate dodecahydrate.
[0030] Put the three kinds of hydration into a 50 mL beaker, stop with a rubber stopper to prevent the evaporation of bound water, heat in a water bath at 45°C, and stir for 0.5h at the same time. The resulting reaction product is the composite phase change material.
[0031] The performance of this embodiment is as follows:
[0032] The phase transition temperature is 15.55°C, the degree of supercooling is 2.2°C, and the latent heat of phase transition is 222.0J / g.
Embodiment 3
[0034] This embodiment provides a composite phase change material, which is prepared by the following method:
[0035] Weigh 1.0000 g of sodium carbonate decahydrate, 1.0000 g of sodium sulfate decahydrate, and 7.0000 g of disodium hydrogen phosphate dodecahydrate.
[0036] Put the three kinds of hydrates into a 50 mL beaker, stop with a rubber stopper to prevent the evaporation of bound water, heat in a water bath at 50°C, and stir for 0.5h at the same time. The resulting reaction product is the composite phase change material.
[0037] The performance of this embodiment is as follows:
[0038] The phase transition temperature is 16.0°C, the degree of supercooling is 3.0°C, and the latent heat of phase transition is 225.4J / g.
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