Method for measuring the quantity of a polymeric or...

G - Physics – 01 – N

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G01N 15/06 (2006.01) G01N 27/00 (2006.01) G01N 27/72 (2006.01) G01N 33/44 (2006.01)

Patent

CA 2245620

A method for measuring the quantity of a polymeric or pre-polymeric composition within a given volume that includes combining the polymeric or pre-polymeric composition with a plurality of micro particles having a non-ferromagnetic or non-ferrimagnetic core provided with a coating that is ferromagnetic, ferrimagnetic, or conductive, to form an admixture in which the microparticles are substantially uniformly dispersed throughout the composition. The microparticles have a detectable electromagnetic characteristic which correlates with the amount of the composition within a given volume. The electromagnetic characteristic of the microparticles is then measured to determine the quantity of the composition within a given volume.

La présente invention concerne un procédé de mesure quantitative d'une composition polymère ou pré-polymère dans un volume donné. Ce procédé consiste à combiner la composition polymère ou pré-polymère à des microparticules dont le noyau, qui n'est ni ferromagnétique ni ferrimagnétique, est pourvu d'un enrobage ferromagnétique, ferrimagnétique ou conducteur, de façon à former un mélange de complément caractérisé par une dispersion sensiblement uniforme des microparticules dans toute la composition. Ces microparticules possèdent une caractéristique électromagnétique qui est en corrélation avec la quantité de la composition à l'intérieur du volume considéré. Le procédé consiste ensuite à mesurer la caractéristique électromagnétique des microparticules pour déterminer la quantité de composition à l'intérieur du volume considéré.

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