Inert Lubricants Oils – Greases – Waxes - Anshul Life Sciences

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Figure 2. Viscosity vs. Temperature of Halocarbon <strong>Oils</strong> Modified ASTM D341 Kinematic viscosity (centistokes) 10000 5000 3000 2000 1000 500 400 300 200 100 80 60 50 40 30 20 10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.80 1.60 1.40 1.20 1.00 0.90 0.80 Temperature (°C) -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 200 220 240 260 280 300 320 340 360 380 400 Temperature (°F) 10000 5000 3000 2000 1000 500 400 300 200 100 80 60 50 40 30 20 10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.80 1.60 1.40 1.20 1.00 0.90 0.80 1000N 700 400 200 95 56 27 6.3 4.2 1.8 0.8 Kinematic viscosity (centistokes) back to Contents 10
Solubility of Gases in Halocarbon Fluids Halocarbon fluids dissolve gases readily. Chlorine, for example, is soluble to the extent of several weight percent at ambient conditions. Oxygen, nitrogen and carbon dioxide dissolve to the extent of 0.15, 0.26 and 1.3 mL of gas per mL of Halocarbon 27 oil at 25°C (77°F) and atmospheric pressure, respectively. Gas solubility increases with an increase in pressure. Halocarbon 27 oil dissolves 10.2 mL of nitrogen gas per mL of oil at 1,000 psig (7.0 MPa) and 37.8°C (100°F) but Halocarbon 6.3 oil dissolves only 5.4 mL of gas per mL of oil under the same conditions. Oil viscosity and density are reduced appreciably by dissolved gas. Bulk Modulus Bulk modulus measurements for Halocarbon oils are well over 200,000 psi (1,379 MPa) at 37.8°C (100°F) with applied pressures up to 10,000 psig (69.1 MPa). Halocarbon oils have compressibilities similar to mineral oils and are much less compressible than perfluoropolyethers. Lubricity Halocarbon oils can be used interchangeably with hydrocarbon oils to lubricate a wide range of equipment such as bearings, compressors, gear boxes and oil pumps. Occasionally, some equipment modification may be required because of density, viscosity or vapor pressure differences from hydrocarbon lubricants. Extreme-pressure tests using the four-ball method show that Halocarbon oils and greases are very good lubricants. The oils exhibit no seizure even at a final applied load of 800 Kg. These greases and oils have load wear indexes that are appreciably better that hydrocarbon oils. Scar diameters increasing uniformly with increasing applied load. Halocarbon oils have been used successfully in all types of equipment for over 50 years. However, if there is any question of suitability or interchangeability, a monitored test in the equipment is advised. Thermal Properties Heats of vaporization of Halocarbon oils vary from 36 to 54 BTU/lb (84 to 126 KJ/Kg). Their specific heats range from 0.2 to 0.25 BTU/(lb)(°F) [837 to 1,047 J/(Kg)(°C)] as the molecular weight increases. Thermal conductivities also increase with molecular weight, but they are all close to 0.1 BTU/(hr)(ft2)(°F/ft) [0.17 W/(°K)(m)]. back to Contents 11
Page 1 and 2: Inert Lubricants Oils - Greases - W
Page 3 and 4: Chemical Composition Halocarbon oil
Page 5 and 6: Oxidizer Inertness Tests Because of
Page 7 and 8: Table 3. Halocarbon Oils 1 Oil 0.8
Page 9: 27 Figure 1. Typical Vapor Pressure
Page 13 and 14: Most solvent-resistant elastomers a
Page 15 and 16: Blending to a Custom Viscosity Oils
Page 17 and 18: Oral toxicity studies were performe
Page 19 and 20: Coal Industry Halocarbon oils are c
Page 21 and 22: Mechanical Seals Mechanical seals f

Inert Lubricants Oils – Greases – Waxes - Anshul Life Sciences

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