Modification of reinforced polymer materials in a static magnetic field

Different magnetic treatments were investigated and recommendations were made concerning industrial application of magnetic treatment of fibers freshly impregnated with binders in fabrication of reinforced PCM to strengthen them significantly, as the most simple, economical, and efficient type of ma...

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Bibliographic Details
Published in:Fibre chemistry 1999-03, Vol.30 (4), p.243-247
Main Authors: Studentsov, V N, Mizintsov, A A
Format: Article
Language:English
Online Access:Get full text
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Summary:Different magnetic treatments were investigated and recommendations were made concerning industrial application of magnetic treatment of fibers freshly impregnated with binders in fabrication of reinforced PCM to strengthen them significantly, as the most simple, economical, and efficient type of magnetic treatment. A correlation was found between the relative changes in the degree of orientation of the molecules of the oligomers and the strength properties of materials fabricated using a static magnetic field. It was found that the strengthening effect of the magnetic treatments has a complex structural and adhesive mechanism. Used in reinforcing fibers, where formation of hydrogen bonds with the binder is characteristic, the sigma sub b and alpha sub im of the materials simultaneously increase as a result of the magnetic treatments, contradicting the classic theory of cross-linked polymers. The ratio of the relative changes in sigma sub b and alpha sub im is a function of the reciprocal orientation of the reinforcing fibers and the lines of force of the external static magnetic field. (Example materials include long fibers of polypropylene and polyacrylonitrile, among others, in epoxy matrix or phenol-formaldehyde matrix.)
ISSN:0015-0541