Introduction（产品简介）
3M氟化液FC-70是无色透明全氟化学品，FC-70具有良好的热稳定性和化学稳定性，而且可以和一些敏感材料相容、不燃、无毒无残留。这一系列独特的性质使得FC-72可以在电子行业有各种不同的应用，包括用于气相焊VPS的热传导。FC-72也可以用于回流焊炉冷凝盘管处得冷凝，其蒸汽压很容易达到饱和所以很容易收集。FC-72也可以作为导热液、电子测试液和惰性介质。
3M Fluorinert Electronic Liquid FC-70 is a clear, colorless, fully-?uorinated liquid. Like other Fluorinert electronic liquids, Fluorinert liquid FC-70 is thermally and chemically stable, compatible with sensitive materials, non?ammable, practically non-toxic and leaves essentially no residue upon evaporation. This unique combination of properties makes Fluorinert liquid FC-70 ideal for many electronics applications,including vapor phase soldering and thermal management.
An ideal ?uid for use in condensation re?ow soldering, the saturated vapor generated from boiling Fluorinert liquid FC-70 is very dense and easily contained. The elimination of oxygen allows for use of mild ?ux compounds, simplifying the cleaning of ?nished circuit boards.
Other uses for Fluorinert liquid FC-70 include heat transfer, electronics testing and inert reaction media.
Physical Properties物理化学性质
Properties |
FC-70 |
Appearance外观 |
无色透明 |
Average Molecular Weight平均分子量 |
820 |
Boiling Point (1 atm)沸点 |
215℃ |
Pour Point倾点 |
﹣25℃ |
Estimated Critical Temperature最高承受温度 |
608 K |
Estimated Critical Pressure最高承受压力 |
1030000pa |
Vapor Pressure蒸汽压 |
15pa |
Latent Heat of Vaporization (at normal boiling point挥发潜热 |
69 J/g |
Liquid Density液体密度 |
1940kg/m3 |
Kinematic Viscosity运动粘度 |
12 centipoise |
Absolute Viscosity绝对粘度 |
24centipoise |
Liquid Speci?c Heat比热 |
1100 J/ kg°C |
Liquid Thermal Conductivity导热率 |
0.070 W/ m°C |
Coef?cient of Expansion膨胀系数 |
0.0010 /°C |
Refractive Index折光率 |
1.303 |
Surface Tension表面张力 |
18 dynes/cm |
Water Solubility溶水能力 |
<8 ppm |
Solubility in Water水中溶解力 |
<5 ppm |
Ozone Depletion Potential臭氧破坏潜值 |
0 |
Dielectric Strength介电强度 |
40 kV, 0.1" gap |
Dielectric Constant介电常数 |
1.98 |
Electrical Resistivity绝缘强度 |
2.3 x 10(15)ohm cm |
Not for speci?cation purposes All values determined at 25°C unless otherwise speci?ed
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