Dual phase change energy storage material and preparation method thereof
An energy storage material and dual-phase transition technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve problems such as leakage, water pollution, unrecoverable emulsifier, etc. The effect of temperature regulation not matching seasonal changes
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Embodiment 1
[0051] Mix 2g of polymerizable emulsifier allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate (DNS-86) with 80g of deionized water, and use a high-speed disperser to shear at a speed of 5000rpm for 15min. Then it was added into an ultrasonic cell disruptor, and dispersed for 15 minutes at an amplitude of 60%, to obtain an aqueous phase; wherein, the mass of the emulsifier was 2.4% of the mass of the aqueous phase. 6.6g of monomer (styrene: divinylbenzene=80%:20%), 13.4g of n-octadecane (n-ODE) and 0.2g of initiator azobisisobutyronitrile (AIBN) were mixed, Keep the temperature in a water bath at 30°C for 30 minutes to form an oil phase. The water phase was poured into the oil phase, stirred at a speed of 5000 rpm for 15 min, and the pre-emulsion was emulsified with an amplitude of 60% for 30 min using an ultrasonic cell breaker to obtain a fine emulsion. Pour the mini-emulsion into a 250ml four-neck flask, which has a feed port, a mechanical stirrer, a nitrogen in...
Embodiment 2
[0068] Mix 2g of polymerizable emulsifier allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate (DNS-86) with 85g of deionized water, and use a high-speed disperser to shear at a speed of 5000rpm for 15min. Then it was added into an ultrasonic cell breaker, and dispersed for 20 minutes at an amplitude of 60%, to obtain a water phase; wherein, the mass of the emulsifier was 2.3% of the mass of the water phase. With 8g monomer (styrene: divinylbenzene=70%: 30%), the n-octadecane (n-ODE) of 16g and the initiator azobisisobutyronitrile (AIBN) of 0.5g are mixed, at 30 ℃ in a water bath for 30 min to form an oil phase. The water phase was poured into the oil phase, stirred at a speed of 5000 rpm for 15 min, and the pre-emulsion was emulsified with an amplitude of 60% for 30 min using an ultrasonic cell breaker to obtain a fine emulsion. Pour the mini-emulsion into a 250ml four-neck flask, which has a feed port, a mechanical stirrer, a nitrogen inlet and a reflux port, p...
Embodiment 3
[0072] Mix 2.5g of polymerizable emulsifier allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate (DNS-86) with 85g of deionized water, and use a high-speed disperser to shear at a speed of 5000rpm for 15min. Then it was added into an ultrasonic cell disruptor, and dispersed for 15 minutes at an amplitude of 60%, to obtain a water phase; wherein, the mass of the emulsifier was 2.8% of the mass of the water phase. With 8g monomer (styrene: divinylbenzene=70%: 30%), the n-octadecane (n-ODE) of 18g and the initiator azobisisobutyronitrile (AIBN) of 0.3g are mixed, at 30 ℃ in a water bath for 30 min to form an oil phase. The water phase was poured into the oil phase, stirred at a speed of 5000 rpm for 15 min, and the pre-emulsion was emulsified with an amplitude of 60% for 30 min using an ultrasonic cell breaker to obtain a fine emulsion. Pour the mini-emulsion into a 250ml four-neck flask, which has a feed port, a mechanical stirrer, a nitrogen inlet and a reflux port,...
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