Nano core-shell structure pore-forming agent and preparation method thereof
A technology of nano-core-shell and pore-forming agent is applied in the field of nano-core-shell structure pore-forming agent and its preparation, which can solve the problems of easy aggregation of pore structure, unstable structure of foam pore-forming agent, difficult control of pore size and the like.
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Embodiment 1
[0026] The preparation method of nano core-shell structure pore-forming agent, comprises the following steps:
[0027] (1) 0.5 gram average particle diameter is 100nm nano-carbon black is added 100 gram mass concentration and carry out ultrasonic dispersion in the ammonia solution of 15wt%, ultrasonic frequency is 20kHz, and dispersion time is 30 minutes, obtains nano-carbon black suspension;
[0028] (2) Under the condition of heating in a water bath at 70°C, add the obtained nano-carbon black suspension dropwise into an aqueous aluminum chloride solution with a concentration of 1.5 mol / L, and the mass ratio of the nano-carbon black suspension to the aqueous aluminum chloride solution is 20:100 , the dropping speed is 0.5 drop / s, and stirs evenly simultaneously, and the stirring speed is 100r / min, and the stirring time is 10 minutes to obtain the mixed solution;
[0029] (3) The obtained mixed solution was left to age for 6 hours, and then centrifuged at a speed of 3000r / min ...
Embodiment 2
[0032] The preparation method of nano core-shell structure pore-forming agent, comprises the following steps:
[0033] (1) 1 gram of average particle diameter is that the nano activated carbon of 400nm is added 100 grams of mass concentration in the aqueous ammonia solution of 20wt% to carry out ultrasonic dispersion, ultrasonic frequency is 30kHz, and dispersion speed is, and dispersion time is 30 minutes, obtains nano activated carbon suspension ;
[0034] (2) Under the condition of heating in a water bath at 90°C, add the obtained nano-activated carbon suspension dropwise into a 2mol / L aluminum nitrate aqueous solution, the mass ratio of the nano-activated carbon suspension to the aluminum nitrate aqueous solution is 30:100, and the dropping rate is 1 drop / s, while stirring evenly, the stirring speed is 200r / min, and the stirring time is 20 minutes to obtain a mixed solution;
[0035] (3) The resulting mixed solution was left to age for 8 hours, and then centrifuged at a ...
Embodiment 3
[0038] The preparation method of nano core-shell structure pore-forming agent, comprises the following steps:
[0039] (1) adding 1 gram of carbon nanospheres with an average particle diameter of 200nm into 100 grams of ammonia solution with a mass concentration of 25wt% for ultrasonic dispersion, the ultrasonic frequency is 40kHz, and the dispersion time is 30 minutes to obtain a suspension of carbon nanospheres;
[0040] (2) Under the condition of heating in a water bath at 80°C, the obtained nanocarbon sphere suspension was added dropwise to a 2.5mol / L aluminum chloride aqueous solution, and the mass ratio of the nanocarbon sphere suspension to the aluminum chloride aqueous solution was 30:100. The dropping rate is 2 drops / s, and the mixture is uniformly stirred at the same time, the stirring speed is 400r / min, and the stirring time is 30 minutes to obtain a mixed solution;
[0041] (3) The resulting mixed solution was left to age for 10 hours, and then centrifuged at a spe...
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Abstract
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