Porous composite organic phase change heat-storing material and preparation method thereof
A heat storage material and phase change heat storage technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of unfavorable recovery, high reaction requirements, complicated preparation process, etc. Simple, thermally stable effect
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[0013] Example 1
[0014] First mix n-octadecane and n-eicosane in a mass ratio of 3:7, heat to a molten state, maintain the temperature at 50°C, and stir at 600r / min for 30-60 minutes to make a uniform organic heat storage material Liquid eutectic mixture.
[0015] Then, the liquid mixture was mixed with 13X molecular sieve in a ratio of 1:5, stirred at 600r / min for 100 minutes, and dried at 27°C for 100 minutes to obtain a porous composite organic phase change heat storage material. According to measurement, the solidification temperature of the composite phase change heat storage material is 34.7°C, the melting temperature is 35.9°C, the latent heat of solidification is 35.8kJ / kg, and the latent heat of melting is 38.6kJ / kg.
Example Embodiment
[0016] Example 2
[0017] First mix n-octadecane and n-eicosane in a mass ratio of 7:3, heat to a molten state, maintain the temperature at 50℃, and stir at 600r / min for 30-60 minutes to make a uniform organic heat storage material Liquid eutectic mixture.
[0018] Then, the liquid mixture was mixed with 4A molecular sieve in a ratio of 1:3, stirred at 600 r / min for 100 minutes, and dried at 27° C. for 100 minutes to obtain a porous composite organic phase change heat storage material. After measurement, the composite phase change heat storage material has a solidification temperature of 27.8°C, a melting temperature of 28.9°C, a solidification latent heat of 56.8 kJ / kg, and a melting latent heat of 59.4 kJ / kg.
Example Embodiment
[0019] Example 3
[0020] First, mix n-octadecane and n-eicosane in a mass ratio of 5:5, heat to a molten state, maintain the temperature at 50°C, and stir at 600r / min for 30-60 minutes to make a uniform organic heat storage material Liquid eutectic mixture.
[0021] Then, the liquid mixture was mixed with 5A molecular sieve in a ratio of 1:1 and stirred at a speed of 600r / min for 100 minutes, and dried at 27°C for 100 minutes to obtain a porous composite organic phase change heat storage material. After measurement, the composite phase change heat storage material has a solidification temperature of 32.9°C, a melting temperature of 33.8°C, a solidification latent heat of 115.8 kJ / kg, and a melting latent heat of 117.3 kJ / kg.
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