Preparation method of polystyrene foam microsphere

A technology of polystyrene and foam microspheres, which is applied in the field of polymer processing and molding, can solve the problems of cumbersome operation, complicated preparation process, and difficult process control, and achieve the effect of simple process, controllable particle size, and easy process control

Inactive Publication Date: 2015-01-21
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
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Problems solved by technology

The preparation process of these polystyrene foam microspheres is relatively complicated, the operation is cumbersome, and the process is difficult to control.

Method used

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  • Preparation method of polystyrene foam microsphere

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Effect test

Embodiment 1

[0025] Prepare polystyrene, hexane and benzene at a mass fraction of 4.0: 1.0: 96.0 to prepare an oil phase solution; polyethylene oxide and water to prepare an aqueous solution at a mass fraction of 0.01: 99.9, filter the aqueous solution, and use the filtrate as the external water phase; prepare the prepared oil Ultrasonic the phase solution for 1 min before the preparation of the emulsion, draw 3 ml of distilled water, 3 ml of the oil phase solution and 50 ml of the outer water phase solution with a syringe respectively, and connect the syringe with the inner water phase, oil phase and outer water phase of the emulsion generator respectively. The pipes are connected and fixed on the corresponding micro-injection pumps; respectively adjust the flow rates of the inner water phase, oil phase and outer water corresponding to the micro-injection pumps to 1.5ml / h, 3.0 ml / h and 200.0 ml / h, respectively Distilled water, oil phase and external water phase are injected into the intern...

Embodiment 2

[0027] Polystyrene, dodecane and fluorobenzene are prepared as an oil phase solution at a mass fraction of 15.0: 5.0: 90.0; polyacrylic acid and water are prepared as an aqueous solution at a mass fraction of 1.0: 99.0, and the aqueous solution is filtered, and the filtrate is used as an external aqueous phase; the prepared The oil phase solution was ultrasonicated for 5 min before emulsion preparation, and 3 ml of distilled water, 3 ml of oil phase solution, and 50 ml of external water phase solution were sucked up with a syringe, and the syringe was connected to the internal water phase, oil phase, and external water phase of the emulsion generator, respectively. connected with the corresponding pipeline, and installed and fixed on the corresponding micro-injection pump; respectively adjust the flow rate of the inner water phase, oil phase and outer water corresponding to the micro-injection pump to 1.0 ml / h, 4.0 ml / h and 400.0 ml / h, respectively Inject distilled water, oil p...

Embodiment 3

[0029] Polystyrene, hexadecane, and 1,2-dichloroethane were prepared as an oil phase solution at a mass fraction of 25.0: 10.0: 65.0; polyvinyl alcohol and water were prepared as an aqueous solution at a mass fraction of 4.0: 96.0, and the aqueous solution was filtered, and the filtrate was used as an external Water phase: Sonicate the prepared oil phase solution for 10 min before emulsion preparation, draw 3 ml of distilled water, 3 ml of oil phase solution and 50 ml of external water phase solution with a syringe respectively, and connect the syringe with the inner water of the emulsion generator Phase, oil phase and external water phase are connected by pipes, and installed and fixed on the corresponding micro-injection pump; respectively adjust the flow rate of the micro-injection pump corresponding to the internal water phase, oil phase and external water to 2.0 ml / h, 6.0 ml / h and 800.0 ml / h, respectively inject distilled water, oil phase and external water phase into the ...

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Abstract

The invention provides a preparation method of a polystyrene foam microsphere. The preparation method mainly comprises the steps of: by virtue of manners of introducing a pore-forming agent into a polystyrene solution and introducing microbubbles through ultrasonic oscillation, preparing water-in-polystyrene-solution composite emulsifiable particles or polystyrene solid emulsifiable particles by virtue of a microfluidic technology, removing an organic solvent for dissolving a polystyrene-based polymer by virtue of a spin evaporation method and drying to remove water and residual solvent, thereby obtaining the polystyrene foam microsphere with narrow particle size distribution. The foam microsphere can be widely applied in the fields such as chemical catalysis and high-energy physical experiments.

Description

technical field [0001] The invention relates to a preparation method of polystyrene foam microspheres, belonging to the field of polymer processing and molding. The prepared polystyrene foam microspheres can be widely used in biomedical diagnosis, microelectronics technology, chemical catalysis, high-energy physics experiments, colloidal crystal templates and the like. Background technique [0002] Polystyrene foam microspheres are widely used in biomedical diagnosis, microelectronics technology, chemical catalysis and high-energy physics experiments due to their advantages of large specific surface area, strong adsorption and solvent resistance. At present, the preparation of polystyrene foam microspheres usually adopts a synthetic route, that is, using styrene monomers, initiators and dispersants, etc., to prepare polystyrene foam microspheres through polymerization reactions such as emulsion or suspension polymerization. The preparation process of these polystyrene foam ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08J3/12C08L25/06
Inventor 刘梅芳陈素芬张占文李波漆小波刘一杨李靖苏琳李洁史瑞廷初巧妹黄勇冯建鸿
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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