Liquid Silicone Rubber Thermal Conductivity

The thermal conductivity of dimethyl silicone fluid is lower than that of common organic compounds nearly the same as that of benzene and toluene and is roughly 25 that of water.

Liquid silicone rubber thermal conductivity.

Silicone rubber is an elastomer rubber like material composed of silicone itself a polymer containing silicon together with carbon hydrogen and oxygen silicone rubbers are widely used in industry and there are multiple formulations. The thermal conductivity of silicone rubber is higher in comparison with common organic rubbers. Silicones are polymers with a si o si backbone. Carbon infused silicone rubber is preferred to meta filled organic rubber because of overall better mechanical performance.

Song in progress in rubber nanocomposites 2017. Main applications are flexible seals o rings etc. Although thermal conductivity increases with higher viscosities it becomes nearly constant at viscosities above 100 mm 2 s. Thermal conductivity 9 flame retardancy 9 electrical conductivity 9 compression set 10 flex fatigue resistance 10 tear strength and tensile strength 11.

For many years the. Silicone rubber unfilled 0 2 glass 1 1 stainless steel 15 aluminium 220 table 1 thermal conductivity of common substances as can be seen a typical unfilled silicone rubber has a thermal conductivity of approximately 0 2 w m k and even a highly filled silicone elastomer can barely exceed 0 4 w m k. New carbon materials 2020 35 1. Lasance articles design materials compounds adhesives substrates test measurement elastomer rubber technical data thermal conductivity in the may 2001 issue this column discussed the thermal conductivity of unfilled plastics.

2 2 4 silicone rubber sir silicone rubber sir is an elastomer composed of silicone containing silicon carbon hydrogen and oxygen in the form of a polymer. Silicone rubber can be immersed in water cold water warm water boiling water for long periods with water absorption of about 1. There are different types depending on functional groups in the structure and curing mechanisms. November 1 2001 clemens j.

By infusing rubber silicone with carbon black a small amount of conductivity can be imparted into the material while still retaining its superior physical properties. The curing method can be either vulcanized or catalyzed. Key properties include thermal stability chemical stability electrical insulation and low toxicity. When the material contains a high amount of inorganic fillers the conductivity can be improved twice which makes the material adequate for thermal interface sheets and heating rollers.

Silicone rubbers are often one or two part polymers and may contain fillers to improve properties or reduce cost. Jia long lin et al.