LFA 1000 – Silicone Oils – Thermal Conductivity

Fluids – Thermal Conductivity

Silicone oils, characterized by polymerized siloxanes with organic side chains, represent silicon analogs of carbon-based organic compounds. These oils can form relatively long and intricate molecules based on silicon rather than carbon.

Renowned for their qualities as excellent electrical insulators, silicone oils also exhibit commendable heat-transfer capabilities and thermal stability. Notably, they are non-flammable, distinguishing them from their carbon analogs. Primary applications for silicone oils include serving as lubricants or hydraulic fluids.

App. Nr. 02-007-008 LFA 1000 – Silicone Oils – Thermal Conductivity

An example application involves the determination of thermal conductivity in the temperature range from room temperature to 100 °C for a silicone oil. The thermal diffusivity was gauged using an LFA, employing a specialized sample holder designed for liquids, pastes, and powders.

In conjunction, a DSC PT 10 was utilized to measure the specific heat capacity (Cp). The subsequent calculation of thermal conductivity involved integrating data on density, thermal diffusivity, and Cp values.

It’s noteworthy that while the specific heat capacity increases with temperature, both thermal diffusivity and thermal conductivity exhibit a decrease as the temperature rises.

Related instruments

LFA 1000

LFA 1000 – True LaserFlash Analyzer- The premium device Temperature range -125 °C/ -100 °C bis 500 °C and RT up to 1250°C/ 1600°C/ 2000°C/ 2800°C

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