Method of monitoring fire resistance of hydraulic fluids

Details Method of monitoring fire resistance of hydraulic fluids Method of monitoring fire resistance of hydraulic fluids

C - Chemistry, Metallurgy

10

M

C10M 169/04 (2006.01)

Patent

CA 2621777

A method of monitoring the fire resistance of hydraulic fluids involves measuring a property of the hydraulic fluid that changes as the hydraulic fluid is used; relating the measurement to the fire resistance of the hydraulic fluid; and if necessary, taking remedial action in order to improve the fire resistance of the hydraulic fluid. A suitable property is the molecular weight of polymer anti-mist additives such as polymethyl methacrylate and the fire resistance may be improved by adding to the hydraulic fluid, a concentrate of the polymer in a suitable solvent when the measured molecular weight falls below an acceptable value.

L'invention concerne un procédé pour surveiller la résistance au feu de fluides hydrauliques comprenant la mesure d'une propriété du fluide hydraulique qui varie lorsque le fluide hydraulique est utilisé ; la mise en relation de la mesure à la résistance au feu du fluide hydraulique ; et si nécessaire, une action de correction, ce qui permet d'améliorer la résistance au feu du fluide hydraulique. L'invention est caractérisée en ce que le poids moléculaire des additifs anti-vaporisation polymères, tels que le méthacrylate polyméthyle, ainsi que la résistance au feu sont améliorés grâce à l'ajout, dans le fluide hydraulique, d'un concentré du polymère dans un solvant approprié, lorsque le poids moléculaire mesuré arrive en-dessous d'une valeur acceptable.

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