Constant-temperature phase change energy storage material
A phase change energy storage and normal temperature technology, which is applied in the field of building wall materials, can solve the problems of phase change materials losing application value, difficulty in achieving expected results, and high degree of supercooling, and achieve low cost, large latent heat, and high degree of supercooling. small effect
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[0016] Example 1:
[0017] The proportion of ingredients used is: dodecanol, 60kg; paraffin, 20kg; Tween 60, 3kg; mass percentage 10% ammonium persulfate solution 30kg (prepared before use, the preparation time should not exceed 5h); vinyl trioxide Silane (151), 2kg; Silica 2kg
[0018] 1. Take dodecanol, paraffin, Tween 60, and vinyl trioxysilane (151) into the reactor, start the stirrer, adjust the speed to 250r / min, heat up to 70°C, and continue stirring for 30 minutes. Vinyltrioxysilane (151) can also be replaced by vinyltrimethoxysilane (171).
[0019] 2. Add ammonium persulfate solution dropwise while stirring, and stop heating after 3 hours.
[0020] 3. Add silica, continue stirring for 1 hour, and discharge.
[0021] The technical properties of the phase change energy storage materials prepared by this method are as follows:
[0022] Phase transition point: 28°C
[0023] Latent heat of phase change: 156J / g
[0024] PH value: 6.5
[0025] Density: 0.85kg / m 3
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