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意大利全聚醚氟油YLVAC25/6真空泵氟油
产品参数表
| Typical Proerty | Fomblin Y LVAC Grades | |||||
| 简称 | Units | 06/6 | 14/6 | 16/6 | 25/6 | |
| Average molecular weight | 平均分子量 | a.m.u | 1800 | 2500 | 2700 | 3300 |
| Specific gravity(20°C)(68 °F) | 比重 | g/cm³ | 1.88 | 1.89 | 1.89 | 1.90 |
| Kinematic Viscosity(20°C)(68 °F) | 动粘度 | cSt | 64 | 148 | 168 | 276 |
| Viscosity Index (20°C)(68 °F) | 粘度系数 | 71 | 97 | 110 | 113 | |
| Vapor Pressure | 蒸汽压 | |||||
| @25°C(68 °F) | torr | 8×10-7 | 1×10-7 | 2×10-6 | 6×10-8 | |
| @100°C(212 °F) | torr | 3×10-3 | 2×10-4 | 2×10-4 | 6×10-5 | |
| Pour point | 倾点 | °C | -50 | -45 | -45 | -35 |
| °F | -58 | -49 | -49 | -31 | ||
| Heat of vaporization(200°C)(392°F) | 汽化热 | cal/g | 11 | 8 | 8 | 7 |
| Surface Tension | 表面张力 | dyne/cm | 21 | 22 | 22 | 22 |
| Evaporation loss(22hrs;149°C for 14/6,16/6,and 25/6,120°C for 06/6) | 蒸发损耗 | % by wt. | 2.8 | 2.6 | 3.9 | 0.5 |
| Ulitmate total pressure | 总压强 | torr | 1.7×10--3 | 1.4×-3 | 2.4×-3 | 1.2×10-3 |
| Specific oil consumption | 油耗 | cm³/hrs | 0.4 | 0.6 | 0.5 | 0.7 |
