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Dispersion of α-Al_2O_3 Nano-Powders in Water Suspension

Shi Chen-hong

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Abstract

This paper uses sodium hexametaphosphate(SHP),polyethyleneglycol(PEG400),cetyltrimethylammonium chloride(CTAC) and sodium dodecyl benzene sulfonate(SDBS)as surfactants to make a study of dispersion of α-Al2O3 nano-powders in water suspension.The influence of supersonic time,pH value and surfactant concentration on the stability of α-Al2O3 suspension is systematically studied.The results show that mass fraction of surfactant has the greatest influence on the stability of the suspension.The dispersion stability of α-Al2O3 water suspension is the first to be increased to a maximum and the tast to be decreased with the increase of ultrasonic time.SDBS is the best one among the four kinds of surfactants in the experiments,the optimal dispersing condition is 2.0% in mass percent of SDBS and pH value is 9,ultrasonic time is 20min.

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What this paper is about

This paper uses sodium hexametaphosphate(SHP),polyethyleneglycol(PEG400),cetyltrimethylammonium chloride(CTAC) and sodium dodecyl benzene sulfonate(SDBS)as surfactants to make a study of dispersion of α-Al2O3 nano-powders in water suspension.The influence of supersonic time,pH value and surfactant concentration on the stability of α-Al2O3 suspension is systematically studied.The results show that mass fraction of surfactant has the greatest influence on the stability of the suspension.The dispersion stability of α-Al2O3 water suspension is the first to be increased to a maximum and the tast to be decreased with the increase of ultrasonic time.SDBS is the best one among the four kinds of surfactants in the experiments,the optimal dispersing condition is 2.0% in mass percent of SDBS and pH value is 9,ultrasonic time is 20min.

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Available abstract

This paper uses sodium hexametaphosphate(SHP),polyethyleneglycol(PEG400),cetyltrimethylammonium chloride(CTAC) and sodium dodecyl benzene sulfonate(SDBS)as surfactants to make a study of dispersion of α-Al2O3 nano-powders in water suspension.The influence of supersonic time,pH value and surfactant concentration on the stability of α-Al2O3 suspension is systematically studied.The results show that mass fraction of surfactant has the greatest influence on the stability of the suspension.The dispersion stability of α-Al2O3 water suspension is the first to be increased to a maximum and the tast to be decreased with the increase of ultrasonic time.SDBS is the best one among the four kinds of surfactants in the experiments,the optimal dispersing condition is 2.0% in mass percent of SDBS and pH value is 9,ultrasonic time is 20min.

Key concepts: Pulmonary surfactant, Sodium hexametaphosphate, Suspension (topology), Dispersion (optics), Dispersion stability, Mass fraction, Chemistry, Dispersant

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Dispersion of α-Al_2O_3 Nano-Powders in Water Suspension — Research Paper | ScholarLens