Preparation method of metal-nonmetal hollow Janus particles

A non-metallic, hollow technology, applied in metal material coating process, liquid chemical plating, coating, etc., can solve the problems of inapplicable large particle size Janus particle preparation, complex preparation process, etc., and achieve simple and fast preparation method , high activity, high metal activity effect

Active Publication Date: 2019-03-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the defects and deficiencies of the prior art, the purpose of the present invention is to provide a method for preparing hollow Janus glass microspheres, which solves the problem that the existing preparation method has a complicated preparation process and is not suitable for the preparation of large-sized Janus particles

Method used

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  • Preparation method of metal-nonmetal hollow Janus particles
  • Preparation method of metal-nonmetal hollow Janus particles
  • Preparation method of metal-nonmetal hollow Janus particles

Examples

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preparation example Construction

[0033] The invention discloses a method for preparing metal-nonmetal hollow Janus particles. The method mainly includes the following steps:

[0034] Step 1: Pretreat the hollow glass microspheres, the pretreatment process is:

[0035] Flotation treatment: the hollow glass beads are subjected to ultrasonic and centrifugal static treatment to reduce the impact of debris on the quality of subsequent coating particles;

[0036] Hydroxylation treatment: add the flotation hollow glass microspheres into the NaOH solution, heat and stir at 40-120°C for 20-60 minutes, stand still to take the upper layer mixture, and filter until the filtered water is neutral; among them, the NaOH solution The concentration is 20-40g / L;

[0037] Amination treatment: Add the hydroxylated hollow glass microspheres to the mixture of silane coupling agent, ethanol and deionized water, stir at 30-100°C for 40-90min, after the reaction is completed, filter and wash with ethanol , and then cleaned with deio...

Embodiment 1

[0045] Weigh 10 g of hollow glass microspheres with a diameter distribution of φ40-120 μm (H60, Sinosteel Ma’anshan Mining Institute New Material Technology Co., Ltd.), add the hollow glass microspheres to deionized water and ultrasonicate for 5 minutes to form a milky suspension. Centrifuge and separate, take the upper layer of glass microbead mixture, and dry it at 110°C for later use. Add the dried hollow glass microspheres into 250ml, 30g / L NaOH solution, heat and stir, and treat at 80°C for 40min. Stand still to take the upper layer mixture, and filter it with deionized water until the filtered water is neutral, and dry the glass beads for later use. Then the hydroxylated hollow glass microspheres are added to the mixed solution of silane coupling agent, ethanol and deionized water, wherein the amount of silane coupling agent Kh550 is 1% of the mass of hollow glass microspheres, ethanol and deionized water The volume ratio of water is 1:1, and it is stirred at 60°C for 6...

Embodiment 2

[0057] The difference between this example and Example 1 is that the silane coupling agent is Kh560, and the morphology and properties of the prepared Janus particles are the same as those in Example 1.

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Abstract

The invention discloses a preparation method of metal-nonmetal hollow Janus particles. The preparation method includes the steps that hollow glass micro-beads are pretreated; the pretreated hollow glass micro-beads are injected into an interface formed by molten liquid paraffin and high-temperature deionized water; standing and cooling are conducted until the paraffin is solidified to obtain a paraffin template embedded with the hollow glass micro-beads; the paraffin template is placed in a plating solution prepared in advance, and standing is conducted for a reaction; the paraffin template and the plated hollow glass micro-beads are separated, and two hemispherical metal-nonmetal hollow Janus particles with different chemical compositions and different properties can be obtained after cleaning. According to the preparation method of the metal-nonmetal hollow Janus particles, the preparation method is simple and fast, the metal-nonmetal hollow Janus particles with the large particle diameter micron scale can be prepared in continuous batch, the application range of the microspheres is wide, particledispersibility is good, and application research can be easy to directly conduct.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to the field of hollow glass microspheres, and in particular to a method for preparing hollow Janus particles. Background technique [0002] High-performance hollow glass microsphere is a hollow spherical powdery ultra-light inorganic non-metallic material, which has the characteristics of light weight, low thermal conductivity, high compressive strength and good fluidity. Its true density is 0.2-0.60g / cm 3 , with a particle size between 2 and 120 μm, is a new type of lightweight material with wide application and excellent performance developed in recent years. The technology of coating metal on its surface to meet different functional requirements is also gradually developing. The surface of hollow glass microspheres is coated with metal, which not only has the functional properties of metals such as electrical conductivity and magnetism, but also has the characteristics of li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/10C23C18/18C23C18/31
CPCC03C17/001C03C17/10C03C2217/254C03C2218/115C23C18/1893C23C18/31
Inventor 王磊王雷磊邓立强王旭东
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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