Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing two-dimensional nano boron nitride with jet flow cavitation technology

A two-dimensional nano-boron nitride technology, applied in chemical instruments and methods, nitrogen compounds, nanotechnology, etc., can solve problems such as low cost, limited preparation methods, and inability to meet mass production of two-dimensional nano-boron nitride, etc. The effect of low production cost and simple and easy preparation process

Active Publication Date: 2013-04-24
BEIHANG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation methods of two-dimensional nano boron nitride mainly include arc discharge method, solvothermal method, vapor phase deposition method and liquid phase method. Although arc discharge method, solvothermal method and vapor phase deposition method can prepare high-quality two-dimensional nanometer Boron nitride, but due to the limitations of the preparation method, it cannot meet the needs of mass production of two-dimensional nano-boron nitride
Recently, related research abroad has reported the preparation of two-dimensional nano-boron nitride in liquid phase. From the atomic force microscope (AFM) pictures in the report, it can be seen that the quality of two-dimensional nano-boron nitride prepared by these methods is not perfect. , however, direct dispersion and exfoliation of boron nitride in liquid phase may be an effective method for low-cost, large-scale preparation of two-dimensional nano-boron nitride

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
  • Method for preparing two-dimensional nano boron nitride with jet flow cavitation technology
  • Method for preparing two-dimensional nano boron nitride with jet flow cavitation technology
  • Method for preparing two-dimensional nano boron nitride with jet flow cavitation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A jet cavitation device such as figure 1 As shown, the cavitation generator as figure 2 As shown, the process of preparing two-dimensional nano boron nitride by jet cavitation method is:

[0069] The first step: 1.9% boron nitride powder, 0.1% modifier and 98% water are used to prepare a boron nitride aqueous solution with good dispersion stability, and put it into the storage tank 1, wherein the boron nitride powder The average particle size is 12 μm, and the modifier is sodium carboxymethyl cellulose (CMC);

[0070] The second step: set the working pressure of the plunger pump 5 to 20Mpa, open the valve 3 at the water inlet pipe 2, the boron nitride aqueous solution enters the plunger pump 5 from the storage tank 1, and turn on the motor 4 to run the system, and the boron nitride aqueous solution is Pressurize to a specified pressure of 20Mpa; the power of the motor 4 is 30KW;

[0071] Step 3: The pressurized boron nitride aqueous solution enters the cavitation ge...

Embodiment 2

[0077] A jet cavitation device such as figure 1 As shown, the cavitation generator as image 3 As shown, the process of preparing two-dimensional nano boron nitride by jet cavitation method is:

[0078] The first step: 4.9% boron nitride powder, 3.1% sodium lauryl sulfate and 92% water are prepared to prepare a boron nitride aqueous solution with good dispersion stability, and put it into the storage tank 1, wherein nitrogen The average particle size of boron powder is 25μm;

[0079] Step 2: Set the working pressure of the plunger pump 5 to 40MPa, open the valve 3 at the water inlet pipe 2, the boron nitride aqueous solution enters the plunger pump 5 from the storage tank 1, and start the motor 4 to run the system, and the boron nitride aqueous solution is Pressurize to a specified pressure of 40Mpa;

[0080] The power of the motor 4 is 30KW;

[0081] Step 3: The pressurized boron nitride aqueous solution enters the cavitation generator 8 through the high-pressure pipe 7, ...

Embodiment 3

[0087] A jet cavitation device such as figure 1 As shown, the cavitation generator as figure 2 As shown, the process of preparing two-dimensional nano boron nitride by jet cavitation method is:

[0088] The first step: 9.1% boron nitride powder, 4.9% sodium lauryl sulfate and 86% water are prepared to prepare a boron nitride aqueous solution with good dispersion stability, and put it into the storage tank 1, wherein nitrogen The average particle size of boron powder is 45μm;

[0089] The second step: set the working pressure of the plunger pump 5 to 70MPa, open the valve 3 at the water inlet pipe 2, the boron nitride aqueous solution enters the plunger pump 5 from the storage tank 1, and turn on the motor 4 to run the system, and the boron nitride aqueous solution is Pressurize to a specified pressure of 70Mpa; the power of the motor 4 is 30KW;

[0090] Step 3: The pressurized boron nitride aqueous solution enters the cavitation generator 8 through the high-pressure pipe 7...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
depthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for two-dimensional nano boron nitride with a jet flow cavitation technology. The method comprises the following seven steps of: 1, preparing three kinds of raw materials such as boron nitride powder and the like into a boron nitride aqueous solution according to a certain weight ratio, putting the solution into a material storing tank; 2, making the boron nitrideaqueous solution enter a plunger pump from the material storing tank, and pressurizing the solution to a specified pressure; 3, making the boron nitride aqueous solution enter a cavitation generator for lamellar striping to obtain a solution containing single-layer and multi-layer two-dimensional nano boron nitride; 4, cooling the solution containing single-layer or multi-layer two-dimensional nano boron nitride to the room temperature with water; 5, making the solution obtained in the step 4 reenter the material storing tank, the plunger pump and the cavitation generator, and repeating the steps 3 and 4 to form a cycle of the preparation process; 6, running a system for 5-100 minutes till processing is finished, and shutting down the system; and 7, taking the solution obtained in the step 6 out of the material storing tank, and pouring into a precipitating tank for precipitating to obtain supernatant fluid, i.e., the needed two-dimensional nano boron nitride solution. The method has the advantages of advanced process, low cost, no pollution and realization of industrial large-scale production.

Description

technical field [0001] The invention relates to a method for preparing two-dimensional nano-boron nitride by jet cavitation technology, which belongs to a technology for efficiently preparing two-dimensional nano-boron nitride by using a mechanical method, and specifically relates to a preparation device and method for two-dimensional nano-boron nitride . Background technique [0002] The basic unit of nanomaterials can be divided into zero-dimensional, one-dimensional and two-dimensional nanomaterials according to the spatial dimension. Among them, two-dimensional nanomaterials refer to materials with only one dimension in the order of nanometers in the three-dimensional space. Among many nanomaterials, the special nanoscale layered structure obtained by inorganic layered compounds has attracted widespread interest. It can not only provide a unique nanoscale reaction space for many chemical reactions, but also the nanoscale monolithic layer after stripping. It can be used...

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 Patents(China)
IPC IPC(8): C01B21/064B82Y40/00
Inventor 沈志刚李金芝易敏麻树林张晓静邢玉山
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com