Strawberry-like composite material and preparation method thereof

A composite material, strawberry technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, titanium compounds, etc., can solve the problems of low purity of strawberry-like composite materials, use of toxic chemical reagents, cumbersome preparation process, etc. , to achieve industrialized large-scale production, narrow particle size distribution, fast and simple preparation

Active Publication Date: 2020-10-27
GUANGDONG UNIV OF TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a strawberry-like composite material and a preparation method thereof, which solves the problem that the strawberry-like composite material prepared by the current strawberry-like composite material has low purity, poor dispersibility, cumbersome preparation process, and the use of toxic chemical reagents. The problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Strawberry-like composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] In the preparation system provided by the embodiment of the present invention, the spark ablation device is a closed container.

[0037] The carrier gas source communicates with one of the electrodes through the inlet pipeline, and the other electrode communicates with the collecting device through the gas outlet pipeline and the deposition pipeline. above the base.

[0038] The installation axes of the inlet pipeline and the outlet pipeline are on the same horizontal straight line, and are on the same horizontal straight line with the axes of the two electrodes.

[0039] The inlet pipeline is provided with a valve to control the flow rate of the carrier gas source.

[0040] In the embodiment of the present invention, the distance between the two electrodes is 0.1-3 mm.

[0041] The preparation method of strawberry shape composite material comprises the following steps:

[0042] Step 1: The carrier gas source carrying the core particles enters the spark ablation devi...

Embodiment 1

[0059] Preparation of barium titanate@silver strawberry-like composite material, the steps are as follows:

[0060] Step 1: Pass nitrogen gas carrying barium titanate particles with a particle size of 80nm into the spark ablation device at a flow rate of 2L / min;

[0061] Step 2: In the spark ablation device, a hollow cylindrical silver electrode with an inner diameter of 10 mm and a wall thickness of 2 mm is applied with a pulse voltage of 0.3 kV and 25 Hz. The spark discharge process generates high temperature to ablate and evaporate the surface materials of the two silver electrode materials ;

[0062] The silver nanoparticles produced by ablation immediately deposited on the barium titanate core particles to form barium titanate@silver strawberry-like composites.

[0063] The barium titanate@silver strawberry-shaped composite particles prepared in this example have an average core particle diameter of 80 nm, and electrode nanoparticles have an average particle diameter of ...

Embodiment 2

[0065] Preparation of silica@golden strawberry-like composite material, the steps are as follows:

[0066] Step 1: Pass helium gas carrying silicon dioxide particles with a particle size of 40nm into the spark ablation device at a flow rate of 0.5L / min;

[0067] Step 2: In the spark ablation device, a hollow cylindrical gold electrode with an inner diameter of 5mm and a wall thickness of 2mm is applied with a pulse voltage of 0.7kV and 10.7Hz. The spark discharge process generates high temperature to ablate and evaporate the surface material of the gold electrode material;

[0068] The gold nanoparticles produced by ablation were immediately deposited on the silica core particles to form the silica@gold strawberry-like composite.

[0069] The average particle diameter of the core particles of the silica@gold strawberry-shaped composite particles prepared in this example is 40nm, and the average particle diameter of the electrode nanoparticles is 10nm, which are evenly distribu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of nano materials, in particular to a strawberry-like composite material and a preparation method thereof. The preparation method comprises the following steps: a gas-carrying gas source loading core particles enters a spark ablation device through electrodes; a spark ablation reaction is carried out on the two electrodes at an impulse voltage; surfacematerials of the two electrodes are ablated and evaporated by high temperature generated by spark discharge; the evaporated electrode materials are mixed with carrying gas; and the mixture is deposited to the core particles quickly to form the strawberry-like composite material. The preparation method is rapid, simple, environmental-friendly and sustainable in production, lowers the production cost, and achieves industrial production favorably. The prepared strawberry-like composite material is high in purity, narrow in grain size distribution and good in dispersibility. Electrode nanoparticles on the strawberry-like composite material are uniform in size and controllable in size. Different strawberry-like composite materials can be manufactured by replacing the core particles and materials of the electrodes, so that the strawberry-like composite material can be applied to the fields of super-hydrophobic materials, self-cleaning coatings, solar batteries, catalysis, biomedicines, electronics and the like.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a strawberry-shaped composite material and a preparation method thereof. Background technique [0002] Strawberry-like composites refer to a new type of material in which one material is discontinuously attached to the surface of another solid spherical particle. Due to the unique structure, high specific surface area, and controllable surface properties of strawberry-like composites, they have attracted great attention. Strawberry-like composites have complex multi-level structures, exhibit enhanced stability, special magnetic properties and unique optical properties, etc. widely used. [0003] At present, the methods for preparing strawberry-like composites mainly include polymerization and self-assembly methods, including seed polymerization, microemulsion polymerization, soap-free emulsion polymerization, in-situ synthesis, template modification, chemical evaporation ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14C01G23/00C01B33/18B22F1/02C08J3/12B82Y30/00B82Y40/00C08L27/16C08L79/04C08L25/06
CPCB22F9/14C01G23/00C01B33/18C08J3/12B82Y30/00B82Y40/00C08J2327/16C08J2379/04C08J2325/06B22F1/17B22F1/16
Inventor 张昱崔成强王泽鹏杨冠南
Owner GUANGDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap