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Method for preparing monodisperse polystyrene/zirconia core-shell glue composite ball particle

A zirconium dioxide and polystyrene technology, applied in zirconia, coatings, etc., can solve the problems of difficult to control the thickness of the shell layer, poor particle monodispersity, poor quality of the coating layer, etc., to reduce the use of raw materials , low energy consumption, the effect of reducing production costs

Inactive Publication Date: 2008-01-30
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0007] The monodispersity of zirconium dioxide submicron spherical particles has a great influence on it in many applications, but it is difficult to directly prepare submicron-sized monodisperse zirconium dioxide spherical particle materials, Widoniak et al. ("European Journal of Inorganic Chemistry "2005, 15, 3149) reported that monodisperse zirconia spherical particles were prepared by hydrolysis of zirconium alkoxide, but too fast zirconium alkoxide hydrolysis is easy to nucleate alone, which makes the monodispersity of particles worse, and the particle dispersion is greater than 10%
[0008] When the template particles are coated with inorganic material shells such as zirconium dioxide, products with higher purity can be obtained by hydrolyzing zirconium alkoxide precursors, but due to the faster hydrolysis of zirconium alkoxide precursors, the quality of the coating layer is relatively low. Poor, hard to control shell thickness and other shortcomings ("Inorganic Chemistry Communications" 2003, 6, 942)

Method used

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  • Method for preparing monodisperse polystyrene/zirconia core-shell glue composite ball particle

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Mix anhydrous ethanol and methanol evenly at a volume ratio of 3:2, then add a certain amount of monodisperse polystyrene spherical particles (particle diameter 160nm) and ultrasonically disperse them uniformly, with a mass concentration of 0.4g / L, then add a certain amount of deionized Water, so that the concentration of deionized water is about 0.2 mol / liter, this dispersion liquid is recorded as liquid A; another certain amount of mixed solvent of absolute ethanol and methanol with a volume ratio of 3:2 is added, and a certain amount of n-butanol is added Zirconium, so that the concentration of zirconium n-butoxide is about 25 mmol / liter, this dispersion liquid is denoted as B liquid. At room temperature, add liquid B to liquid A, the volume ratio of liquid B to liquid A is 4:1, and magnetically stir for 2 hours to obtain a white turbid liquid, which is centrifuged to obtain spherical monodisperse polystyrene / zirconia The core-shell colloidal composite spherical part...

Embodiment 2

[0042]Mix absolute ethanol and acetonitrile evenly at a volume ratio of 5:1, then add a certain amount of monodisperse polystyrene spherical particles (particle diameter 120nm) for ultrasonic dispersion, the mass concentration is 0.4g / L, and then add a certain amount of deionized water , so that the concentration of deionized water is about 1 mol / liter, this dispersion liquid is recorded as A liquid; another certain amount of absolute ethanol and acetonitrile are mixed solvents with a volume ratio of 5:1, and a certain amount of zirconium isopropoxide is added , so that the concentration of zirconium isopropoxide is about 300 mmol / liter, this dispersion liquid is denoted as B liquid. At room temperature, add liquid B to liquid A, the volume ratio of liquid B to liquid A is 4:1, and stir magnetically for 10 hours to obtain a white turbid liquid, which is centrifuged to obtain spherical monodisperse polystyrene / zirconia The core-shell colloidal composite spherical particles have...

Embodiment 3

[0044] Mix absolute ethanol and acetone uniformly at a volume ratio of 12:5, then add a certain amount of commercially available monodisperse polystyrene spherical particles (particle diameter 280nm) for ultrasonic dispersion, the mass concentration is 0.4g / L, and then add a certain amount of Deionized water, so that the concentration of deionized water is about 2 mol / liter, this dispersion liquid is recorded as A liquid; another certain amount of deionized ethanol and acetone are mixed solvents with a volume ratio of 12:5, and a certain amount of normal Zirconium propoxide, so that the concentration of zirconium n-propoxide is about 40 mmol / liter, and this dispersion liquid is denoted as B liquid. At room temperature, add liquid B to liquid A, the volume ratio of liquid B to liquid A is 4:1, and magnetically stir for 8 hours to obtain a white turbid liquid, which is centrifuged to obtain spherical monodisperse polystyrene / zirconia The core-shell colloidal composite spherical ...

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Abstract

The invention pertains to the preparation and application technological field of a sub-micron composite material, in particular relating to a preparation method that a plurality of nano to decades of nano zirconium dioxide monodisperse core-shell composite ball particles are coated on momodisperse polystyrene colloid ball particles (with a diameter of 80-3000 nano), and zirconium dioxide hollow balls in corresponding shapes are obtained after particles on a moulding board are removed through high temperature calcination. The invention has a simple preparation method and the obtained core-shell ball-shaped particles have good dispersivity and even coating, the thickness of which can be controlled based on reaction conditions. Besides, core-shell ball particles with different sizes can be obtained by changing the size of the moulding polystyrene particles. The moulding particles of the core-shell particles can be removed through high temperature calcinations, so as to obtain more symmetrical zirconium dioxide hollow ball particles.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of submicron-sized composite materials, in particular to monodisperse core-shell composite spherical particles coated with zirconium dioxide on monodisperse polystyrene colloidal spherical particles (with a particle diameter of 80 to 3000 nanometers) The preparation method, and the template particles are removed by high-temperature calcination to obtain corresponding spherical zirconia hollow spheres. Background technique [0002] Zirconia (ZrO 2 ) as a high-performance fine inorganic material is an important ceramic, semiconductor and catalytic material, because it has good weather resistance, chemical corrosion resistance, high chemical stability, thermal stability, non-toxicity, photosensitivity, etc. Unique properties, so it is widely used in chemical industry, electronics, biology, coatings, sensors, dielectric materials, plastics, ink, paper, chemical fiber, rubber and o...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08J3/11C08J7/06B29B13/02C01G25/02
Inventor 唐芳琼陈东任湘菱
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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