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Crescent-shaped and deformed ceramic microparticles, its preparation method, application and preparation device

A technology for preparing devices and ceramic micro-particles, applied in chemical instruments and methods, liquid separation into bead droplets and granulation, chemical/physical/physical-chemical processes of applying energy, etc. Uniform size and precise and controllable shape

Active Publication Date: 2021-12-14
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The droplet template forming method is mainly used for the preparation of spherical ceramic microparticles, which limits the further development and application of ceramic microparticles.

Method used

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  • Crescent-shaped and deformed ceramic microparticles, its preparation method, application and preparation device
  • Crescent-shaped and deformed ceramic microparticles, its preparation method, application and preparation device
  • Crescent-shaped and deformed ceramic microparticles, its preparation method, application and preparation device

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preparation example Construction

[0036] In a second aspect, the present invention provides a method for preparing crescent-shaped and deformed ceramic microparticles, comprising the steps of:

[0037] Pass the internal phase fluid into the external phase fluid in the external phase glass tube through the internal phase glass tube;

[0038] Under the shear action of the external phase fluid, the internal phase fluid forms water-in-oil emulsified droplets at the outlet of the internal phase glass tube, and the droplets flow through the cross exposure area of ​​the two beams of ultraviolet light with the liquid flow;

[0039] The inner phase fluid droplets are collected through exposure and solidification, and then cleaned, dried, cross-linked, aged, and sintered to obtain crescent-shaped and deformed ceramic microparticles.

[0040] The present invention is one of the key technologies for double-beam UV curing of opaque droplets. At present, in the method of preparing microparticles based on microfluidic UV cur...

Embodiment 1

[0061] refer to figure 1 , an example of a device for preparing crescent-shaped and deformed ceramic microparticle green bodies based on the microfluidic chip design of the present invention, including: a bottom plate 1, a first dispensing needle 2, an internal phase glass tube 3, and a second point Glue needle 4, external phase glass tube 5, first ultraviolet lamp head 6, second ultraviolet lamp head 7 and collection hose 8; The first dispensing needle 2 and the second dispensing needle 4 are fixed side by side on the base plate 1, and the One port of the inner glass tube 3 communicates with the cavity of the first dispensing needle 2, one port of the outer glass tube 5 communicates with the cavity of the second dispensing needle 4, and the other of the inner glass tube 3 One port extends into the outer phase glass tube 5 after passing through the cavity of the second dispensing needle 4; the first ultraviolet lamp head 6 is placed directly above the outer phase glass tube 5;...

Embodiment 2

[0067] A device for preparing crescent-shaped and deformed ceramic microparticle green bodies based on a microfluidic chip, the difference is that it also includes injectors for injecting the inner phase fluid and the outer phase fluid respectively, and the first dispensing The needle 2 and the second dispensing needle 4 are respectively connected with a syringe, and the respective syringes are driven by a flow pump, so as to inject the internal phase fluid and the external phase fluid into the first dispensing needle 2 and the second dispensing needle 4 respectively.

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Abstract

The invention discloses a crescent-shaped and deformed ceramic microparticle, its preparation method, application and preparation device. The inner-phase fluid is passed into the outer-phase fluid in the outer-phase glass tube through the inner-phase glass tube; the outer-phase fluid is sheared Next, the inner phase fluid forms water-in-oil emulsified droplets at the outlet of the inner phase glass tube, and the droplets flow through the cross exposure area of ​​two beams of ultraviolet light with the liquid flow; the inner phase fluid droplets are collected after exposure and solidification, and then cleaned, After drying, cross-linking, aging and sintering, crescent-shaped and deformed ceramic microparticles are obtained. Based on the microfluidic chip, the crescent-shaped and deformed micro-particle green body prepared by using the oil-water two-phase has the characteristics of precise controllable shape and uniform size, which provides the basis for its stable mass production.

Description

technical field [0001] The invention relates to the technical field of ceramic microparticle preparation, in particular to crescent-shaped and deformed ceramic microparticles, a preparation method, application and preparation device thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Ceramic materials have high strength, high hardness, high temperature resistance, wear resistance, corrosion resistance and other superior properties, and are widely used in national defense, metallurgy, machinery, aerospace, biomedicine and other fields. Ceramic microparticles not only have the general properties of ceramic materials, but also conform to the development trend of miniatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J2/02B01J19/12B01J19/06B01L3/00C04B35/10C04B35/622C04B35/64
CPCB01J2/02B01J19/123B01J19/06B01L3/502784C04B35/10C04B35/622C04B35/64C04B2235/6562C04B2235/6567C04B2235/945
Inventor 满佳周晨晨满录明夏荷于海博祁斌华泽升李剑峰
Owner SHANDONG UNIV
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