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

Method for manufacturing nanometer iron

A manufacturing method and nano-iron technology are applied in the field of radiation chemical manufacturing of nano-materials to achieve the effects of uniform particle size, simple process and short production cycle

Inactive Publication Date: 2005-06-29
SHANGHAI UNIV
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using radiation chemical method to prepare nanomaterials, the method widely used at present is γ-ray radiation method, but there are few electron accelerators at home and abroad as radiation sources to prepare nanomaterials

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: the specific process steps of the present embodiment are as follows:

[0018] a. First, weigh a certain amount of iron sulfate with FA1004 dish electronic balance, dissolve it in distilled water, and make the concentration of solution iron ion reach 0.015mol / 100ml;

[0019] b. Then add hydrophilic surfactant polyvinyl alcohol PVA, the concentration is 0.8g / 100ml;

[0020] c. add isopropanol IPA again as the scavenger of oxidative free radical OH, concentration is 30ml / 100ml, and add ammoniacal liquor, forms ferric hydroxide colloidal solution;

[0021] d. Put the above-mentioned prepared solution into the irradiation container, fill with nitrogen to get rid of the oxygen in the solution, and then seal the irradiation container;

[0022] e. Using a high-frequency and high-voltage industrial electron accelerator, irradiate with a radiation dose of 400-500KGy under the working range of 2.0MeV and 10mA denamitron electron accelerator;

[0023] f. The irrad...

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

The invention relates to an iron super-micro particle preparation technique, belongs to radiation chemical nanometer material production technique. The technique of the invention is that: nanometer material preparation: obtain iron hydroxide colloid solution by using iron sulfate as raw material and ammonia liquor as precipitant; control the crystal core accumulating speed and the particle size by hydrophilic surface-activator polyvinyl alcohol with isopropyl alcohol as free radical scavenger and in radiation chemistry principles; develop the radiation chemical reaction by the bunch of electrons generated by industrial electron accelerator; the radiated solution produces nanometer triple iron quadoxide which deoxidated with high purity hydrogen to obtain nanometer iron powder. The advantages of the invention are that: simple technical processes, short production cycle, non-pollution, the obtained particles are of uniform diameter and finely divided. The nanometer iron produced in above ways is of higher satiating hard magnetism and coercive force which is applicable on high intensity magnetic recording material..

Description

technical field [0001] The invention relates to a method for preparing iron ultrafine particles, which belongs to the field of radiation chemistry manufacturing nanometer materials. Background technique [0002] In recent years, due to the broad prospect of magnetic nanoparticles in the practical application of reagents, the research on the preparation method and properties of magnetic nanoparticles has received great attention. In terms of magnetic recording materials, magnetic nanoparticles are expected to replace traditional micron-sized magnetic powders. , used for high-density magnetic recording materials; in the biological field, using it as a carrier to make a guiding agent can make the drug gather in the local part of the body under the action of an external magnetic field, so as to perform high-concentration drug treatment on the pathological location, especially suitable for Cancer, tuberculosis and other diseases with fixed lesions. [0003] Synthesize nano-magne...

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
IPC IPC(8): B22F9/16
Inventor 周瑞敏何林锋
Owner SHANGHAI 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