EFFECT OF WATER ON HYDRAULIC BRAKE FLUID
COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD
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A study was made to determine the effect of absorbed moisture on the physical and chemical characteristics of polar type hydraulic brake fluids. Specific studies were carried out on the effect of moisture on equilibrium boiling point, flash point, cold temperature viscosity, oxidation stability, and effect on rubber with several polar brake fluids of varying chemical composition. Moisture produced the following effects - a. Boiling points are lowered in all brake fluids - drastically in so-called high boiling fluids. b. Flash points are increased. c. Cold temperature viscosities are usually increased. d. The stability of the brake fluid toward oxidation is decreased. e. Rubber swelling and softening is decreased.
- Lubricants and Hydraulic Fluids