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Magnetic particles (Document No: 20080008745)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1989 |
| Description | Magnetic polymer particles are formed by swelling porous, polymer particles and impregnating the particles with an aqueous solution of precursor magnetic metal salt such as an equimolar mixture of ferrous chloride and ferric chloride. On addition of a basic reagent such as dilute sodium hydroxide, the metal salts are converted to crystals of magnetite which are uniformly contained througout the pores of the polymer particle. The magnetite content can be increased and neutral buoyancy achieved by repetition of the impregnaton and neutralization steps to adjust the magnetite content to a desired level. |
| File Size | 629568 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080008745 |
| Archival Resource Key | ark:/13960/t2d84768s |
| Language | English |
| Publisher Date | 1989-10-10 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Polymerization Patents Magnetic Materials Spheres Polymers Particles Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |