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High Thermal Conductivity Insulators Providing Fast And Reliable Results

Nov 9

The ability of a material to transfer heat to or from other materials is known as Efficient Thermal Management in Electronics. Materials with high thermal conductivity are able to move heat more quickly than materials with lower thermal conductivity. Materials with low thermal conductivity, like mineral wool and Styrofoam, are insulators that slow the flow of heat. The ideal thermal conductivity for an application depends on the environment and the type of system. For example, high thermal conductivity is preferred in heat exchangers because it helps the hot fluid to travel faster to the cooler components. On the other hand, if the heat must be insulated from other parts of the system, lower thermal conductivity is more appropriate.

The thermal conductivity of a material is determined by its specific heat capacity, density and the amount of heat it absorbs and loses per unit mass or volume. The higher the specific heat capacity, the more energy it requires to raise the temperature of 1 kg of the material by a given amount. A material with a high specific heat capacity has a good insulating property and can reduce energy costs in the long run.

Temperature Dependent

The material's thermal conductivity changes with the temperature of the material, which can lead to inaccuracies in calculations based on this measurement. To make accurate predictions, the thermal conductivity should be measured under the same conditions every time it is tested.

This includes determining the exact measurement method and making sure all the variables are constant, such as the size of the specimen, the pressure, and the temperature. The thermal conductivity of a material also varies by the composition of its elements and by its crystalline structure. For example, metals have very high thermal conductivity because they are composed of pure elements with very close atomic bonds. In contrast, plastics have low thermal conductivity because of their brittleness and voids in the structure.

A wide variety of materials have been used for insulation, each with its own specific properties and advantages. Some are manufactured as synthetic materials and include foams and fibres. Others are natural or reclaimed. For example, wood fibre insulation is made from timber waste ranging from sawmill shavings to the cellulose that lines some buildings and can be supplied as a blown or damp-sprayed product. It has the advantage of being fire-resistant and not absorbing or emitting odours. It is also resistant to mildew and fungus, does not attract vermin and is dimensionally stable.

Another alternative to traditional insulators is GORE® Thermal Insulation. Its directional capabilities enable designers to direct heat away from sensitive electronic devices, which can increase component life and reliability. It can also be combined with graphite or other thermal management materials to further enhance performance.