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Preparation method of high surface smoothness polystyrene hollow microspheres

A polystyrene, hollow microsphere technology, applied in the preparation of microspheres, microcapsule preparations, etc., to achieve the effect of small surface roughness, high sphericity, and strong applicability

Active Publication Date: 2018-11-27
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, improving the surface finish of microspheres has always been a bottleneck problem restricting its application in the above fields

Method used

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  • Preparation method of high surface smoothness polystyrene hollow microspheres
  • Preparation method of high surface smoothness polystyrene hollow microspheres
  • Preparation method of high surface smoothness polystyrene hollow microspheres

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A preparation method of polystyrene hollow microspheres with high surface smoothness, comprising the following steps:

[0034] Step 1. Purification of raw materials: fluorobenzene water bath with temperature controlled at 85°C, redistilled; heavy water water bath with temperature controlled at 90°C, redistilled; ethanol water bath with temperature controlled at 40°C, redistilled; during redistillation process, glass instruments are surrounded by polytetrafluoroethylene tape Winding and sealing; polystyrene is dissolved in toluene, so that the mass fraction of polystyrene is 10%, add twice the volume of distilled water according to the volume of the solution, and stir for 24 hours; use a separatory funnel to remove the lower layer of water, add twice the volume of distilled water and stir, Repeat 5 times until the upper and lower layers are basically clear after separation; use a separatory funnel to separate the toluene solution in the upper layer, use a 0.2 μm microporo...

Embodiment 2

[0040] A preparation method of polystyrene hollow microspheres with high surface smoothness, comprising the following steps:

[0041] Step 1. Purification of raw materials: fluorobenzene water bath with temperature controlled at 85°C, redistilled; heavy water water bath with temperature controlled at 90°C, redistilled; ethanol water bath with temperature controlled at 40°C, redistilled; during redistillation process, glass instruments are surrounded by polytetrafluoroethylene tape Winding and sealing; polystyrene is dissolved in toluene, so that the mass fraction of polystyrene is 10%, add twice the volume of distilled water according to the volume of the solution, and stir for 24 hours; use a separatory funnel to remove the lower layer of water, add twice the volume of distilled water and stir, Repeat 5 times until the upper and lower layers are basically clear after separation; use a separatory funnel to separate the toluene solution in the upper layer, use a 0.2 μm microporo...

Embodiment 3

[0047] A preparation method of polystyrene hollow microspheres with high surface smoothness, comprising the following steps:

[0048] Step 1. Purification of raw materials: fluorobenzene water bath with temperature controlled at 85°C, redistilled; heavy water water bath with temperature controlled at 90°C, redistilled; ethanol water bath with temperature controlled at 40°C, redistilled; during redistillation process, glass instruments are surrounded by polytetrafluoroethylene tape Winding and sealing; polystyrene is dissolved in toluene, so that the mass fraction of polystyrene is 10%, add twice the volume of distilled water according to the volume of the solution, and stir for 24 hours; use a separatory funnel to remove the lower layer of water, add twice the volume of distilled water and stir, Repeat 5 times until the upper and lower layers are basically clear after separation; use a separatory funnel to separate the toluene solution in the upper layer, use a 0.2 μm microporo...

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Abstract

The invention discloses a preparation method of high surface smoothness polystyrene hollow microspheres. The preparation method comprises the following steps: (1) purifying polystyrene, fluorobenzene,heavy water and ethanol; (2) dissolving polystyrene in fluorobenzene, and carrying out filtration, wherein the filtrate is taken as an oil phase; the heavy water and deionized distilled water are mixed as an inner water phase; a surfactant A and an electrolyte A are dissolved in the deionized distilled water and filtered, and the filtrate is taken as an outer water phase A; and a surfactant B isdissolved in deionized distilled water and is filtered, and the filtrate is taken as an outer water phase B; (3) preparing oil in water and water in oil compound emulsion particles with the inner water phase, the oil phase and the outer water phase A separately by adopting a microfluid technology; and (4) putting the microspheres into ethanol, carrying out ultrasonic treatment, standing, repeatedultrasonic treatment and standing, continuously standing, collecting microspheres on the surface of ethanol, and drying the microspheres to obtain the high surface smoothness polystyrene hollow microspheres. The high surface smoothness polystyrene hollow microspheres are applied to the fields of laser inertial confinement fusion, astrophysics of lab and high field physics and the like.

Description

technical field [0001] The invention relates to a preparation method of polystyrene hollow microspheres with high surface finish, which belongs to the field of polymer material processing and molding under special and extreme environments. Background technique [0002] In researches such as laser inertial confinement fusion (ICF), laboratory astrophysics and strong field physics, thermonuclear fuel is usually loaded by polymer hollow microspheres. Due to the special application requirements, there are many requirements for the technical indicators of this kind of polymer hollow microspheres. Among them, tiny defects on the surface of microspheres may be amplified during implosion compression, resulting in asymmetric compression, leading to Rayleigh-Taylor hydrodynamic instability. To reduce hydrodynamic instability, such microspheres require a high surface finish. [0003] At present, the preparation of such microspheres usually adopts microfluidic technology. In the proc...

Claims

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Application Information

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IPC IPC(8): B01J13/02
CPCB01J13/02
Inventor 刘梅芳陈强陈素芬张占文刘一杨尹强杜凯初巧妹王宇光李洁李婧黄勇史瑞廷栾旭朱方华
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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