Nano-iron tetroxide(Fe3O4) powder, with a certain magnetism, and the outer magnetic field can be directional movement, size within a certain range with a super-paramagnetic, as well as under the action of external alternating electromagnetic field to generate heat and so on features, its chemical performance is stable, and thus a wide range of uses. 

 

Iron oxide nano-placed four medium, the use of plastic melting method and add the modifier method of dispersing agent, by adsorption of particles formed on the surface electric double layer structure of nano-particles to prevent reunite dispersed preparation of a stable water-based and organic nano - magnetic fluid. Preparation of magnetic fluid two to 12 months can be a very good dispersion of the magnetic particles in the liquid mean diameter of between 16 ~ 35nm. 

 

Technical indicators: 

The unit self-developed nano-iron oxide magnetic powder 4, with an average diameter of about 20nm, with super-paramagnetic iron oxide water-based slurry levels ranging from 0.5 ~ 20% (mass percentage), slurry 30nm diameter iron oxide dispersed about the stability of slurry put it aside in a year or so. 

 

Product performance and application fields: 

1. Magnetic sealing: 

2. Bio-pharmaceutical field: 

3. Magnetic health-care 

4. The use of nano-Fe3O4 magnetic powder and deep black color, can be made magnetic recording materials, high-gradient magnetic separator, microwave absorbing materials, special coatings and electrostatic photocopying contrast medium. 

 

Application areas: 

1. Chemical, plastics, textiles, paints, rubber, paint, sealing, etc.; 

2. Electronics, electronic packaging materials, ferrite materials, batteries; 

3. Metal, ceramics, nano-ceramic, composite ceramic substrate; 

4. UV materials, microwave absorbing materials; 

5. Bio-medical fields: Magnetic drug carrier, cell separation technology, magnetic hyperthermia materials, etc.; 

6. Magnetic health-care materials; 

7. Magnetic recording materials.