Natural timber derivative composite phase change energy storage conductive material, and preparation method thereof
A technology of composite phase change and conductive materials, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of application price-performance competition, expensive precursor equipment for synthesizing carbon nanotubes, etc., and achieve environmental friendliness and good friendliness , the effect of simple preparation method
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[0040] The preparation method of the natural wood derived composite phase change energy storage conductive material of the present invention comprises the following steps:
[0041] (1) Disperse 1 part of wood pulp in an aqueous solution containing 2,2,6,6-tetramethylpiperidine oxide (TEMPO) and sodium bromide (NaBr) to obtain a pulp suspension; add 0.1- 1mol / L hydrochloric acid solution to adjust the pH of the sodium hypochlorite solution to 9-10, and add it to the pulp suspension at 25-30°C to obtain the first mixture; during the reaction, by adding 0.1-1mol / L The pH of the mixture was adjusted to 9-10 with sodium hydroxide until no sodium hydroxide was consumed to obtain a second mixture, and then the second mixture (i.e., the TEMPO oxidized pulp) was rinsed with water several times and suspended in water to form a pulp slurry , and finally use an ultrasonic cell disruptor to ultrasonicate the pulp slurry for 5-30 minutes to obtain a transparent NFC dispersion, such as figu...
Embodiment 1
[0064] The preparation method of the natural wood derived composite phase change energy storage conductive material of this embodiment comprises the following steps:
[0065] (1), 3.03g of wood pulp with a solid content of 33% are dispersed in an aqueous solution containing 0.016g of 2,2,6,6-tetramethylpiperidine oxide (TEMPO) and 0.1g of sodium bromide (NaBr) Inside, obtain pulp suspension; Add the hydrochloric acid solution of 0.5mol / L and adjust the pH value of sodium hypochlorite solution (10ml, 7.5wt%) to be 10, and it is added in the pulp suspension at 25 ℃, stir, obtain the first One mixture; during the reaction process, adjust the pH value of the mixture to 10 by adding 0.5mol / L sodium hydroxide until no sodium hydroxide is consumed to obtain the second mixture, then rinse the pulp oxidized by TEMPO with water several times and suspend In water to form a pulp slurry, and finally use an ultrasonic cell disruptor to sonicate the pulp slurry for 30 minutes to obtain a tra...
Embodiment 2
[0072] The preparation method of the natural wood derived composite phase change energy storage conductive material of this embodiment comprises the following steps:
[0073] (1), 3.03g of wood pulp with a solid content of 33% are dispersed in an aqueous solution containing 0.016g of 2,2,6,6-tetramethylpiperidine oxide (TEMPO) and 0.1g of sodium bromide (NaBr) Inside, obtain pulp suspension; Add the hydrochloric acid solution of 0.5mol / L and adjust the pH value of sodium hypochlorite solution (10ml, 7.5wt%) to be 10, and it is added in the pulp suspension at 25 ℃, stir, obtain the first One mixture; during the reaction process, adjust the pH value of the mixture to 10 by adding 0.5mol / L sodium hydroxide until no sodium hydroxide is consumed to obtain the second mixture, then rinse the pulp oxidized by TEMPO with water several times and suspend In water to form a pulp slurry, and finally use an ultrasonic cell disruptor to sonicate the pulp slurry for 30 minutes to obtain a tra...
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