Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method of water-base acid Co ferrite CoFe2O4 magnetic solution

An acid cobalt iron, magnetic liquid technology, applied in magnetic liquids, chemical instruments and methods, cobalt compounds, etc., can solve the problems of high concentration of harmful components in waste, complex preparation process, high cost, and achieve less waste and preparation. Simple method and low cost effect

Inactive Publication Date: 2003-04-30
SOUTHWEST UNIV
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of these two types of magnetic liquids requires special treatment of the particles after the preparation of magnetic nanoparticles to synthesize magnetic liquids. The preparation process is relatively complicated, the cost is high, and the harmful components of waste (mainly acid or Alkali) with higher concentration and larger amount

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
  • Preparation method of water-base acid Co ferrite CoFe2O4 magnetic solution
  • Preparation method of water-base acid Co ferrite CoFe2O4 magnetic solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: (I) Dosing

[0022] Solution 1 uses FeCl 3 ·6H 2 O (purity 98.06%) with 1M concentration of FeCl 3 Aqueous solution.

[0023] Solution 2 uses Co(NO 3 ) 2 ·H 2 O (purity 97.00%) with 2M concentration of Co(NO 3 ) 2 Aqueous solution, and press [5M HCl / 1 liter Co(NO 3 ) 2 Aqueous solution] Add an appropriate amount of HCl in proportion.

[0024] Solution 3 Use NaOH (purity 96.00%) to prepare a 0.7M NaOH aqueous solution. (II) Mixed

[0025] Solution 1 and solution 2 are selected according to the ratio of Fe to Co molar ratio of 2:1, and solution 1 is poured into solution 2 to obtain solution 2'.

[0026] Solution 3 is selected according to the volume ratio of solution 2'to solution 3 of 1:11. Pour solution 2'into solution 3 quickly (not more than 10 seconds) with stirring. After stirring for 10 minutes, solution 3'is obtained. (III) Reaction

[0027] Under stirring conditions, the solution 3'was heated to boiling and kept boiling for 1 minute. Then stop heating and ...

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

No PUM Login to View More

Abstract

An acidic water-based cobalt ferrite CoFe2O4 as magnetic liquid is prepared through preparing aqueous solutions of FeCl3, Co(NO3)2 and NaOH, proportional mixing, reaction to obtain cobalt ferrite microparticles, washing and synthesizing to obtain stable magnetic liquid. Its advantages are simple process, low cost and high purity.

Description

Technical field [0001] The invention relates to a water-based acidic cobalt ferrite CoFe 2 O 4 Preparation method of magnetic liquid. technical background [0002] Magnetic fluid, also known as magnetic fluid, is a uniformly suspended liquid composed of ferromagnetic particles and base fluid (also called carrier fluid) with magnetic properties and fluidity. As a new type of functional material, it has optical properties, rheological properties, magnetic properties and other characteristics that can be controlled by an external magnetic field, and has broad application prospects in many fields such as engineering technology, medicine, and biology. [0003] At room temperature, the density of magnetic particles is generally greater than that of liquids. Under the action of gravity, the particles are prone to separate precipitation from the base liquid. In order to obtain a magnetic liquid in which particles are stably suspended, the magnetic particles must be nanometer-sized. In th...

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): C01G51/00C04B35/26C04B35/32H01F1/44
Inventor 李建戴大临
Owner SOUTHWEST UNIV
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
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